diff options
Diffstat (limited to 'fs')
431 files changed, 15805 insertions, 7380 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 1964f98e74b..b85efa77394 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -594,21 +594,21 @@ static int __init init_v9fs(void) int err; pr_info("Installing v9fs 9p2000 file system support\n"); /* TODO: Setup list of registered trasnport modules */ - err = register_filesystem(&v9fs_fs_type); - if (err < 0) { - pr_err("Failed to register filesystem\n"); - return err; - } err = v9fs_cache_register(); if (err < 0) { pr_err("Failed to register v9fs for caching\n"); - goto out_fs_unreg; + return err; } err = v9fs_sysfs_init(); if (err < 0) { pr_err("Failed to register with sysfs\n"); + goto out_cache; + } + err = register_filesystem(&v9fs_fs_type); + if (err < 0) { + pr_err("Failed to register filesystem\n"); goto out_sysfs_cleanup; } @@ -617,8 +617,8 @@ static int __init init_v9fs(void) out_sysfs_cleanup: v9fs_sysfs_cleanup(); -out_fs_unreg: - unregister_filesystem(&v9fs_fs_type); +out_cache: + v9fs_cache_unregister(); return err; } diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 7b0cd87b07c..8c92a9ba833 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -155,9 +155,8 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, goto release_sb; } - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { - iput(inode); retval = -ENOMEM; goto release_sb; } @@ -260,7 +259,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf) if (v9fs_proto_dotl(v9ses)) { res = p9_client_statfs(fid, &rs); if (res == 0) { - buf->f_type = V9FS_MAGIC; + buf->f_type = rs.type; buf->f_bsize = rs.bsize; buf->f_blocks = rs.blocks; buf->f_bfree = rs.bfree; diff --git a/fs/Kconfig b/fs/Kconfig index d621f02a3f9..f95ae3a027f 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -4,6 +4,10 @@ menu "File systems" +# Use unaligned word dcache accesses +config DCACHE_WORD_ACCESS + bool + if BLOCK source "fs/ext2/Kconfig" @@ -210,6 +214,7 @@ source "fs/minix/Kconfig" source "fs/omfs/Kconfig" source "fs/hpfs/Kconfig" source "fs/qnx4/Kconfig" +source "fs/qnx6/Kconfig" source "fs/romfs/Kconfig" source "fs/pstore/Kconfig" source "fs/sysv/Kconfig" diff --git a/fs/Makefile b/fs/Makefile index 93804d4d66e..2fb97793467 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -102,6 +102,7 @@ obj-$(CONFIG_UBIFS_FS) += ubifs/ obj-$(CONFIG_AFFS_FS) += affs/ obj-$(CONFIG_ROMFS_FS) += romfs/ obj-$(CONFIG_QNX4FS_FS) += qnx4/ +obj-$(CONFIG_QNX6FS_FS) += qnx6/ obj-$(CONFIG_AUTOFS4_FS) += autofs4/ obj-$(CONFIG_ADFS_FS) += adfs/ obj-$(CONFIG_FUSE_FS) += fuse/ diff --git a/fs/adfs/super.c b/fs/adfs/super.c index 8e3b36ace30..06fdcc9382c 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -483,10 +483,9 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_d_op = &adfs_dentry_operations; root = adfs_iget(sb, &root_obj); - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { int i; - iput(root); for (i = 0; i < asb->s_map_size; i++) brelse(asb->s_map[i].dm_bh); kfree(asb->s_map); diff --git a/fs/affs/super.c b/fs/affs/super.c index 8ba73fed796..0782653a05a 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -473,7 +473,7 @@ got_root: root_inode = affs_iget(sb, root_block); if (IS_ERR(root_inode)) { ret = PTR_ERR(root_inode); - goto out_error_noinode; + goto out_error; } if (AFFS_SB(sb)->s_flags & SF_INTL) @@ -481,7 +481,7 @@ got_root: else sb->s_d_op = &affs_dentry_operations; - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) { printk(KERN_ERR "AFFS: Get root inode failed\n"); goto out_error; @@ -494,9 +494,6 @@ got_root: * Begin the cascaded cleanup ... */ out_error: - if (root_inode) - iput(root_inode); -out_error_noinode: kfree(sbi->s_bitmap); affs_brelse(root_bh); kfree(sbi->s_prefix); diff --git a/fs/afs/file.c b/fs/afs/file.c index 14d89fa58fe..8f6e9234d56 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -251,7 +251,7 @@ static int afs_readpages(struct file *file, struct address_space *mapping, ASSERT(key != NULL); vnode = AFS_FS_I(mapping->host); - if (vnode->flags & AFS_VNODE_DELETED) { + if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) { _leave(" = -ESTALE"); return -ESTALE; } diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 2f213d109c2..b960ff05ea0 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -365,10 +365,10 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, _debug("extract data"); if (call->count > 0) { page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); + buffer = kmap_atomic(page); ret = afs_extract_data(call, skb, last, buffer, call->count); - kunmap_atomic(buffer, KM_USER0); + kunmap_atomic(buffer); switch (ret) { case 0: break; case -EAGAIN: return 0; @@ -411,9 +411,9 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, if (call->count < PAGE_SIZE) { _debug("clear"); page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); + buffer = kmap_atomic(page); memset(buffer + call->count, 0, PAGE_SIZE - call->count); - kunmap_atomic(buffer, KM_USER0); + kunmap_atomic(buffer); } _leave(" = 0 [done]"); diff --git a/fs/afs/internal.h b/fs/afs/internal.h index d2b0888126d..a306bb6d88d 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -109,7 +109,7 @@ struct afs_call { unsigned reply_size; /* current size of reply */ unsigned first_offset; /* offset into mapping[first] */ unsigned last_to; /* amount of mapping[last] */ - unsigned short offset; /* offset into received data store */ + unsigned offset; /* offset into received data store */ unsigned char unmarshall; /* unmarshalling phase */ bool incoming; /* T if incoming call */ bool send_pages; /* T if data from mapping should be sent */ diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index 8f4ce2658b7..298cf8919ec 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -200,9 +200,9 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt) if (PageError(page)) goto error; - buf = kmap_atomic(page, KM_USER0); + buf = kmap_atomic(page); memcpy(devname, buf, size); - kunmap_atomic(buf, KM_USER0); + kunmap_atomic(buf); page_cache_release(page); page = NULL; } diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index e45a323aebb..8ad8c2a0703 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -314,6 +314,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, struct msghdr msg; struct kvec iov[1]; int ret; + struct sk_buff *skb; _enter("%x,{%d},", addr->s_addr, ntohs(call->port)); @@ -380,6 +381,8 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, error_do_abort: rxrpc_kernel_abort_call(rxcall, RX_USER_ABORT); + while ((skb = skb_dequeue(&call->rx_queue))) + afs_free_skb(skb); rxrpc_kernel_end_call(rxcall); call->rxcall = NULL; error_kill_call: diff --git a/fs/afs/super.c b/fs/afs/super.c index 983ec59fc80..f02b31e7e64 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -301,7 +301,6 @@ static int afs_fill_super(struct super_block *sb, { struct afs_super_info *as = sb->s_fs_info; struct afs_fid fid; - struct dentry *root = NULL; struct inode *inode = NULL; int ret; @@ -327,18 +326,16 @@ static int afs_fill_super(struct super_block *sb, set_bit(AFS_VNODE_AUTOCELL, &AFS_FS_I(inode)->flags); ret = -ENOMEM; - root = d_alloc_root(inode); - if (!root) + sb->s_root = d_make_root(inode); + if (!sb->s_root) goto error; sb->s_d_op = &afs_fs_dentry_operations; - sb->s_root = root; _leave(" = 0"); return 0; error: - iput(inode); _leave(" = %d", ret); return ret; } @@ -13,7 +13,7 @@ #include <linux/errno.h> #include <linux/time.h> #include <linux/aio_abi.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/syscalls.h> #include <linux/backing-dev.h> #include <linux/uio.h> @@ -160,7 +160,7 @@ static int aio_setup_ring(struct kioctx *ctx) info->nr = nr_events; /* trusted copy */ - ring = kmap_atomic(info->ring_pages[0], KM_USER0); + ring = kmap_atomic(info->ring_pages[0]); ring->nr = nr_events; /* user copy */ ring->id = ctx->user_id; ring->head = ring->tail = 0; @@ -168,47 +168,38 @@ static int aio_setup_ring(struct kioctx *ctx) ring->compat_features = AIO_RING_COMPAT_FEATURES; ring->incompat_features = AIO_RING_INCOMPAT_FEATURES; ring->header_length = sizeof(struct aio_ring); - kunmap_atomic(ring, KM_USER0); + kunmap_atomic(ring); return 0; } /* aio_ring_event: returns a pointer to the event at the given index from - * kmap_atomic(, km). Release the pointer with put_aio_ring_event(); + * kmap_atomic(). Release the pointer with put_aio_ring_event(); */ #define AIO_EVENTS_PER_PAGE (PAGE_SIZE / sizeof(struct io_event)) #define AIO_EVENTS_FIRST_PAGE ((PAGE_SIZE - sizeof(struct aio_ring)) / sizeof(struct io_event)) #define AIO_EVENTS_OFFSET (AIO_EVENTS_PER_PAGE - AIO_EVENTS_FIRST_PAGE) -#define aio_ring_event(info, nr, km) ({ \ +#define aio_ring_event(info, nr) ({ \ unsigned pos = (nr) + AIO_EVENTS_OFFSET; \ struct io_event *__event; \ __event = kmap_atomic( \ - (info)->ring_pages[pos / AIO_EVENTS_PER_PAGE], km); \ + (info)->ring_pages[pos / AIO_EVENTS_PER_PAGE]); \ __event += pos % AIO_EVENTS_PER_PAGE; \ __event; \ }) -#define put_aio_ring_event(event, km) do { \ +#define put_aio_ring_event(event) do { \ struct io_event *__event = (event); \ (void)__event; \ - kunmap_atomic((void *)((unsigned long)__event & PAGE_MASK), km); \ + kunmap_atomic((void *)((unsigned long)__event & PAGE_MASK)); \ } while(0) static void ctx_rcu_free(struct rcu_head *head) { struct kioctx *ctx = container_of(head, struct kioctx, rcu_head); - unsigned nr_events = ctx->max_reqs; - kmem_cache_free(kioctx_cachep, ctx); - - if (nr_events) { - spin_lock(&aio_nr_lock); - BUG_ON(aio_nr - nr_events > aio_nr); - aio_nr -= nr_events; - spin_unlock(&aio_nr_lock); - } } /* __put_ioctx @@ -217,23 +208,23 @@ static void ctx_rcu_free(struct rcu_head *head) */ static void __put_ioctx(struct kioctx *ctx) { + unsigned nr_events = ctx->max_reqs; BUG_ON(ctx->reqs_active); - cancel_delayed_work(&ctx->wq); - cancel_work_sync(&ctx->wq.work); + cancel_delayed_work_sync(&ctx->wq); aio_free_ring(ctx); mmdrop(ctx->mm); ctx->mm = NULL; + if (nr_events) { + spin_lock(&aio_nr_lock); + BUG_ON(aio_nr - nr_events > aio_nr); + aio_nr -= nr_events; + spin_unlock(&aio_nr_lock); + } pr_debug("__put_ioctx: freeing %p\n", ctx); call_rcu(&ctx->rcu_head, ctx_rcu_free); } -static inline void get_ioctx(struct kioctx *kioctx) -{ - BUG_ON(atomic_read(&kioctx->users) <= 0); - atomic_inc(&kioctx->users); -} - static inline int try_get_ioctx(struct kioctx *kioctx) { return atomic_inc_not_zero(&kioctx->users); @@ -253,7 +244,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) { struct mm_struct *mm; struct kioctx *ctx; - int did_sync = 0; + int err = -ENOMEM; /* Prevent overflows */ if ((nr_events > (0x10000000U / sizeof(struct io_event))) || @@ -262,7 +253,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) return ERR_PTR(-EINVAL); } - if ((unsigned long)nr_events > aio_max_nr) + if (!nr_events || (unsigned long)nr_events > aio_max_nr) return ERR_PTR(-EAGAIN); ctx = kmem_cache_zalloc(kioctx_cachep, GFP_KERNEL); @@ -273,7 +264,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) mm = ctx->mm = current->mm; atomic_inc(&mm->mm_count); - atomic_set(&ctx->users, 1); + atomic_set(&ctx->users, 2); spin_lock_init(&ctx->ctx_lock); spin_lock_init(&ctx->ring_info.ring_lock); init_waitqueue_head(&ctx->wait); @@ -286,25 +277,14 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) goto out_freectx; /* limit the number of system wide aios */ - do { - spin_lock_bh(&aio_nr_lock); - if (aio_nr + nr_events > aio_max_nr || - aio_nr + nr_events < aio_nr) - ctx->max_reqs = 0; - else - aio_nr += ctx->max_reqs; - spin_unlock_bh(&aio_nr_lock); - if (ctx->max_reqs || did_sync) - break; - - /* wait for rcu callbacks to have completed before giving up */ - synchronize_rcu(); - did_sync = 1; - ctx->max_reqs = nr_events; - } while (1); - - if (ctx->max_reqs == 0) + spin_lock(&aio_nr_lock); + if (aio_nr + nr_events > aio_max_nr || + aio_nr + nr_events < aio_nr) { + spin_unlock(&aio_nr_lock); goto out_cleanup; + } + aio_nr += ctx->max_reqs; + spin_unlock(&aio_nr_lock); /* now link into global list. */ spin_lock(&mm->ioctx_lock); @@ -316,16 +296,13 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) return ctx; out_cleanup: - __put_ioctx(ctx); - return ERR_PTR(-EAGAIN); - + err = -EAGAIN; + aio_free_ring(ctx); out_freectx: mmdrop(mm); kmem_cache_free(kioctx_cachep, ctx); - ctx = ERR_PTR(-ENOMEM); - - dprintk("aio: error allocating ioctx %p\n", ctx); - return ctx; + dprintk("aio: error allocating ioctx %d\n", err); + return ERR_PTR(err); } /* aio_cancel_all @@ -413,10 +390,6 @@ void exit_aio(struct mm_struct *mm) aio_cancel_all(ctx); wait_for_all_aios(ctx); - /* - * Ensure we don't leave the ctx on the aio_wq - */ - cancel_work_sync(&ctx->wq.work); if (1 != atomic_read(&ctx->users)) printk(KERN_DEBUG @@ -490,6 +463,8 @@ static void kiocb_batch_free(struct kioctx *ctx, struct kiocb_batch *batch) kmem_cache_free(kiocb_cachep, req); ctx->reqs_active--; } + if (unlikely(!ctx->reqs_active && ctx->dead)) + wake_up_all(&ctx->wait); spin_unlock_irq(&ctx->ctx_lock); } @@ -607,11 +582,16 @@ static void aio_fput_routine(struct work_struct *data) fput(req->ki_filp); /* Link the iocb into the context's free list */ + rcu_read_lock(); spin_lock_irq(&ctx->ctx_lock); really_put_req(ctx, req); + /* + * at that point ctx might've been killed, but actual + * freeing is RCU'd + */ spin_unlock_irq(&ctx->ctx_lock); + rcu_read_unlock(); - put_ioctx(ctx); spin_lock_irq(&fput_lock); } spin_unlock_irq(&fput_lock); @@ -642,7 +622,6 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req) * this function will be executed w/out any aio kthread wakeup. */ if (unlikely(!fput_atomic(req->ki_filp))) { - get_ioctx(ctx); spin_lock(&fput_lock); list_add(&req->ki_list, &fput_head); spin_unlock(&fput_lock); @@ -920,7 +899,7 @@ static void aio_kick_handler(struct work_struct *work) unuse_mm(mm); set_fs(oldfs); /* - * we're in a worker thread already, don't use queue_delayed_work, + * we're in a worker thread already; no point using non-zero delay */ if (requeue) queue_delayed_work(aio_wq, &ctx->wq, 0); @@ -1019,10 +998,10 @@ int aio_complete(struct kiocb *iocb, long res, long res2) if (kiocbIsCancelled(iocb)) goto put_rq; - ring = kmap_atomic(info->ring_pages[0], KM_IRQ1); + ring = kmap_atomic(info->ring_pages[0]); tail = info->tail; - event = aio_ring_event(info, tail, KM_IRQ0); + event = aio_ring_event(info, tail); if (++tail >= info->nr) tail = 0; @@ -1043,8 +1022,8 @@ int aio_complete(struct kiocb *iocb, long res, long res2) info->tail = tail; ring->tail = tail; - put_aio_ring_event(event, KM_IRQ0); - kunmap_atomic(ring, KM_IRQ1); + put_aio_ring_event(event); + kunmap_atomic(ring); pr_debug("added to ring %p at [%lu]\n", iocb, tail); @@ -1089,7 +1068,7 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent) unsigned long head; int ret = 0; - ring = kmap_atomic(info->ring_pages[0], KM_USER0); + ring = kmap_atomic(info->ring_pages[0]); dprintk("in aio_read_evt h%lu t%lu m%lu\n", (unsigned long)ring->head, (unsigned long)ring->tail, (unsigned long)ring->nr); @@ -1101,18 +1080,18 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent) head = ring->head % info->nr; if (head != ring->tail) { - struct io_event *evp = aio_ring_event(info, head, KM_USER1); + struct io_event *evp = aio_ring_event(info, head); *ent = *evp; head = (head + 1) % info->nr; smp_mb(); /* finish reading the event before updatng the head */ ring->head = head; ret = 1; - put_aio_ring_event(evp, KM_USER1); + put_aio_ring_event(evp); } spin_unlock(&info->ring_lock); out: - kunmap_atomic(ring, KM_USER0); + kunmap_atomic(ring); dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, (unsigned long)ring->head, (unsigned long)ring->tail); return ret; @@ -1336,10 +1315,10 @@ SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp) ret = PTR_ERR(ioctx); if (!IS_ERR(ioctx)) { ret = put_user(ioctx->user_id, ctxp); - if (!ret) + if (!ret) { + put_ioctx(ioctx); return 0; - - get_ioctx(ioctx); /* io_destroy() expects us to hold a ref */ + } io_destroy(ioctx); } diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index f11e43ed907..28d39fb84ae 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -39,19 +39,6 @@ static const struct dentry_operations anon_inodefs_dentry_operations = { .d_dname = anon_inodefs_dname, }; -static struct dentry *anon_inodefs_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) -{ - return mount_pseudo(fs_type, "anon_inode:", NULL, - &anon_inodefs_dentry_operations, ANON_INODE_FS_MAGIC); -} - -static struct file_system_type anon_inode_fs_type = { - .name = "anon_inodefs", - .mount = anon_inodefs_mount, - .kill_sb = kill_anon_super, -}; - /* * nop .set_page_dirty method so that people can use .page_mkwrite on * anon inodes. @@ -65,6 +52,62 @@ static const struct address_space_operations anon_aops = { .set_page_dirty = anon_set_page_dirty, }; +/* + * A single inode exists for all anon_inode files. Contrary to pipes, + * anon_inode inodes have no associated per-instance data, so we need + * only allocate one of them. + */ +static struct inode *anon_inode_mkinode(struct super_block *s) +{ + struct inode *inode = new_inode_pseudo(s); + + if (!inode) + return ERR_PTR(-ENOMEM); + + inode->i_ino = get_next_ino(); + inode->i_fop = &anon_inode_fops; + + inode->i_mapping->a_ops = &anon_aops; + + /* + * Mark the inode dirty from the very beginning, + * that way it will never be moved to the dirty + * list because mark_inode_dirty() will think + * that it already _is_ on the dirty list. + */ + inode->i_state = I_DIRTY; + inode->i_mode = S_IRUSR | S_IWUSR; + inode->i_uid = current_fsuid(); + inode->i_gid = current_fsgid(); + inode->i_flags |= S_PRIVATE; + inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; + return inode; +} + +static struct dentry *anon_inodefs_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + struct dentry *root; + root = mount_pseudo(fs_type, "anon_inode:", NULL, + &anon_inodefs_dentry_operations, ANON_INODE_FS_MAGIC); + if (!IS_ERR(root)) { + struct super_block *s = root->d_sb; + anon_inode_inode = anon_inode_mkinode(s); + if (IS_ERR(anon_inode_inode)) { + dput(root); + deactivate_locked_super(s); + root = ERR_CAST(anon_inode_inode); + } + } + return root; +} + +static struct file_system_type anon_inode_fs_type = { + .name = "anon_inodefs", + .mount = anon_inodefs_mount, + .kill_sb = kill_anon_super, +}; + /** * anon_inode_getfile - creates a new file instance by hooking it up to an * anonymous inode, and a dentry that describe the "class" @@ -180,38 +223,6 @@ err_put_unused_fd: } EXPORT_SYMBOL_GPL(anon_inode_getfd); -/* - * A single inode exists for all anon_inode files. Contrary to pipes, - * anon_inode inodes have no associated per-instance data, so we need - * only allocate one of them. - */ -static struct inode *anon_inode_mkinode(void) -{ - struct inode *inode = new_inode_pseudo(anon_inode_mnt->mnt_sb); - - if (!inode) - return ERR_PTR(-ENOMEM); - - inode->i_ino = get_next_ino(); - inode->i_fop = &anon_inode_fops; - - inode->i_mapping->a_ops = &anon_aops; - - /* - * Mark the inode dirty from the very beginning, - * that way it will never be moved to the dirty - * list because mark_inode_dirty() will think - * that it already _is_ on the dirty list. - */ - inode->i_state = I_DIRTY; - inode->i_mode = S_IRUSR | S_IWUSR; - inode->i_uid = current_fsuid(); - inode->i_gid = current_fsgid(); - inode->i_flags |= S_PRIVATE; - inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; - return inode; -} - static int __init anon_inode_init(void) { int error; @@ -224,16 +235,8 @@ static int __init anon_inode_init(void) error = PTR_ERR(anon_inode_mnt); goto err_unregister_filesystem; } - anon_inode_inode = anon_inode_mkinode(); - if (IS_ERR(anon_inode_inode)) { - error = PTR_ERR(anon_inode_inode); - goto err_mntput; - } - return 0; -err_mntput: - kern_unmount(anon_inode_mnt); err_unregister_filesystem: unregister_filesystem(&anon_inode_fs_type); err_exit: diff --git a/fs/attr.c b/fs/attr.c index 95053ad8abc..73f69a6ce9e 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -5,7 +5,7 @@ * changes by Thomas Schoebel-Theuer */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/time.h> #include <linux/mm.h> #include <linux/string.h> diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h index d8d8e7ba6a1..eb1cc92cd67 100644 --- a/fs/autofs4/autofs_i.h +++ b/fs/autofs4/autofs_i.h @@ -110,6 +110,7 @@ struct autofs_sb_info { int sub_version; int min_proto; int max_proto; + int compat_daemon; unsigned long exp_timeout; unsigned int type; int reghost_enabled; diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 76741d8d778..85f1fcdb30e 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -385,6 +385,7 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, sbi->pipefd = pipefd; sbi->pipe = pipe; sbi->catatonic = 0; + sbi->compat_daemon = is_compat_task(); } out: mutex_unlock(&sbi->wq_mutex); diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 450f529a4ea..1feb68ecef9 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -124,6 +124,7 @@ start: /* Negative dentry - try next */ if (!simple_positive(q)) { spin_unlock(&p->d_lock); + lock_set_subclass(&q->d_lock.dep_map, 0, _RET_IP_); p = q; goto again; } @@ -186,6 +187,7 @@ again: /* Negative dentry - try next */ if (!simple_positive(ret)) { spin_unlock(&p->d_lock); + lock_set_subclass(&ret->d_lock.dep_map, 0, _RET_IP_); p = ret; goto again; } diff --git a/fs/autofs4/init.c b/fs/autofs4/init.c index c038727b405..cddc74b9cdb 100644 --- a/fs/autofs4/init.c +++ b/fs/autofs4/init.c @@ -31,11 +31,11 @@ static int __init init_autofs4_fs(void) { int err; + autofs_dev_ioctl_init(); + err = register_filesystem(&autofs_fs_type); if (err) - return err; - - autofs_dev_ioctl_init(); + autofs_dev_ioctl_exit(); return err; } diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index e16980b00b8..d8dc002e9cc 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -19,6 +19,7 @@ #include <linux/parser.h> #include <linux/bitops.h> #include <linux/magic.h> +#include <linux/compat.h> #include "autofs_i.h" #include <linux/module.h> @@ -224,6 +225,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) set_autofs_type_indirect(&sbi->type); sbi->min_proto = 0; sbi->max_proto = 0; + sbi->compat_daemon = is_compat_task(); mutex_init(&sbi->wq_mutex); mutex_init(&sbi->pipe_mutex); spin_lock_init(&sbi->fs_lock); @@ -245,12 +247,9 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) if (!ino) goto fail_free; root_inode = autofs4_get_inode(s, S_IFDIR | 0755); - if (!root_inode) - goto fail_ino; - - root = d_alloc_root(root_inode); + root = d_make_root(root_inode); if (!root) - goto fail_iput; + goto fail_ino; pipe = NULL; root->d_fsdata = ino; @@ -315,9 +314,6 @@ fail_fput: fail_dput: dput(root); goto fail_free; -fail_iput: - printk("autofs: get root dentry failed\n"); - iput(root_inode); fail_ino: kfree(ino); fail_free: diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index da8876d38a7..9c098db4334 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -91,7 +91,24 @@ static int autofs4_write(struct autofs_sb_info *sbi, return (bytes > 0); } - + +/* + * The autofs_v5 packet was misdesigned. + * + * The packets are identical on x86-32 and x86-64, but have different + * alignment. Which means that 'sizeof()' will give different results. + * Fix it up for the case of running 32-bit user mode on a 64-bit kernel. + */ +static noinline size_t autofs_v5_packet_size(struct autofs_sb_info *sbi) +{ + size_t pktsz = sizeof(struct autofs_v5_packet); +#if defined(CONFIG_X86_64) && defined(CONFIG_COMPAT) + if (sbi->compat_daemon > 0) + pktsz -= 4; +#endif + return pktsz; +} + static void autofs4_notify_daemon(struct autofs_sb_info *sbi, struct autofs_wait_queue *wq, int type) @@ -155,8 +172,7 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi, { struct autofs_v5_packet *packet = &pkt.v5_pkt.v5_packet; - pktsz = sizeof(*packet); - + pktsz = autofs_v5_packet_size(sbi); packet->wait_queue_token = wq->wait_queue_token; packet->len = wq->name.len; memcpy(packet->name, wq->name.name, wq->name.len); diff --git a/fs/bad_inode.c b/fs/bad_inode.c index 22e9a78872f..37268c5bb98 100644 --- a/fs/bad_inode.c +++ b/fs/bad_inode.c @@ -9,7 +9,7 @@ */ #include <linux/fs.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/stat.h> #include <linux/time.h> #include <linux/namei.h> diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 6e6d536767f..e18da23d42b 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -852,9 +852,8 @@ befs_fill_super(struct super_block *sb, void *data, int silent) ret = PTR_ERR(root); goto unacquire_priv_sbp; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { - iput(root); befs_error(sb, "get root inode failed"); goto unacquire_priv_sbp; } diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index b0391bc402b..e23dc7c8b88 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -367,9 +367,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent) ret = PTR_ERR(inode); goto out2; } - s->s_root = d_alloc_root(inode); + s->s_root = d_make_root(inode); if (!s->s_root) { - iput(inode); ret = -ENOMEM; goto out2; } diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index a6395bdb26a..4d5e6d26578 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -259,8 +259,14 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) current->mm->free_area_cache = current->mm->mmap_base; current->mm->cached_hole_size = 0; + retval = setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT); + if (retval < 0) { + /* Someone check-me: is this error path enough? */ + send_sig(SIGKILL, current, 0); + return retval; + } + install_exec_creds(bprm); - current->flags &= ~PF_FORKNOEXEC; if (N_MAGIC(ex) == OMAGIC) { unsigned long text_addr, map_size; @@ -352,13 +358,6 @@ beyond_if: return retval; } - retval = setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT); - if (retval < 0) { - /* Someone check-me: is this error path enough? */ - send_sig(SIGKILL, current, 0); - return retval; - } - current->mm->start_stack = (unsigned long) create_aout_tables((char __user *) bprm->p, bprm); #ifdef __alpha__ @@ -454,7 +453,8 @@ out: static int __init init_aout_binfmt(void) { - return register_binfmt(&aout_format); + register_binfmt(&aout_format); + return 0; } static void __exit exit_aout_binfmt(void) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index bcb884e2d61..504b6eee50a 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -712,7 +712,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) goto out_free_dentry; /* OK, This is the point of no return */ - current->flags &= ~PF_FORKNOEXEC; current->mm->def_flags = def_flags; /* Do this immediately, since STACK_TOP as used in setup_arg_pages @@ -934,7 +933,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) #endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */ install_exec_creds(bprm); - current->flags &= ~PF_FORKNOEXEC; retval = create_elf_tables(bprm, &loc->elf_ex, load_addr, interp_load_addr); if (retval < 0) { @@ -1095,6 +1093,29 @@ out: */ /* + * The purpose of always_dump_vma() is to make sure that special kernel mappings + * that are useful for post-mortem analysis are included in every core dump. + * In that way we ensure that the core dump is fully interpretable later + * without matching up the same kernel and hardware config to see what PC values + * meant. These special mappings include - vDSO, vsyscall, and other + * architecture specific mappings + */ +static bool always_dump_vma(struct vm_area_struct *vma) +{ + /* Any vsyscall mappings? */ + if (vma == get_gate_vma(vma->vm_mm)) + return true; + /* + * arch_vma_name() returns non-NULL for special architecture mappings, + * such as vDSO sections. + */ + if (arch_vma_name(vma)) + return true; + + return false; +} + +/* * Decide what to dump of a segment, part, all or none. */ static unsigned long vma_dump_size(struct vm_area_struct *vma, @@ -1102,10 +1123,13 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma, { #define FILTER(type) (mm_flags & (1UL << MMF_DUMP_##type)) - /* The vma can be set up to tell us the answer directly. */ - if (vma->vm_flags & VM_ALWAYSDUMP) + /* always dump the vdso and vsyscall sections */ + if (always_dump_vma(vma)) goto whole; + if (vma->vm_flags & VM_NODUMP) + return 0; + /* Hugetlb memory check */ if (vma->vm_flags & VM_HUGETLB) { if ((vma->vm_flags & VM_SHARED) && FILTER(HUGETLB_SHARED)) @@ -1421,7 +1445,7 @@ static int fill_thread_core_info(struct elf_thread_core_info *t, for (i = 1; i < view->n; ++i) { const struct user_regset *regset = &view->regsets[i]; do_thread_regset_writeback(t->task, regset); - if (regset->core_note_type && + if (regset->core_note_type && regset->get && (!regset->active || regset->active(t->task, regset))) { int ret; size_t size = regset->n * regset->size; @@ -2077,7 +2101,8 @@ out: static int __init init_elf_binfmt(void) { - return register_binfmt(&elf_format); + register_binfmt(&elf_format); + return 0; } static void __exit exit_elf_binfmt(void) diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index 30745f459fa..c64bf5ee2df 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -91,7 +91,8 @@ static struct linux_binfmt elf_fdpic_format = { static int __init init_elf_fdpic_binfmt(void) { - return register_binfmt(&elf_fdpic_format); + register_binfmt(&elf_fdpic_format); + return 0; } static void __exit exit_elf_fdpic_binfmt(void) @@ -334,8 +335,6 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm, current->mm->context.exec_fdpic_loadmap = 0; current->mm->context.interp_fdpic_loadmap = 0; - current->flags &= ~PF_FORKNOEXEC; - #ifdef CONFIG_MMU elf_fdpic_arch_lay_out_mm(&exec_params, &interp_params, @@ -413,7 +412,6 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm, #endif install_exec_creds(bprm); - current->flags &= ~PF_FORKNOEXEC; if (create_elf_fdpic_tables(bprm, current->mm, &exec_params, &interp_params) < 0) goto error_kill; diff --git a/fs/binfmt_em86.c b/fs/binfmt_em86.c index b8e8b0acf9b..2790c7e1912 100644 --- a/fs/binfmt_em86.c +++ b/fs/binfmt_em86.c @@ -100,7 +100,8 @@ static struct linux_binfmt em86_format = { static int __init init_em86_binfmt(void) { - return register_binfmt(&em86_format); + register_binfmt(&em86_format); + return 0; } static void __exit exit_em86_binfmt(void) diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c index 1bffbe0ed77..5979027451b 100644 --- a/fs/binfmt_flat.c +++ b/fs/binfmt_flat.c @@ -15,7 +15,7 @@ * JAN/99 -- coded full program relocation (gerg@snapgear.com) */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/mm.h> @@ -902,7 +902,6 @@ static int load_flat_binary(struct linux_binprm * bprm, struct pt_regs * regs) libinfo.lib_list[j].start_data:UNLOADED_LIB; install_exec_creds(bprm); - current->flags &= ~PF_FORKNOEXEC; set_binfmt(&flat_format); @@ -950,7 +949,8 @@ static int load_flat_binary(struct linux_binprm * bprm, struct pt_regs * regs) static int __init init_flat_binfmt(void) { - return register_binfmt(&flat_format); + register_binfmt(&flat_format); + return 0; } /****************************************************************************/ diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index a9198dfd5f8..613aa061823 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/sched.h> +#include <linux/magic.h> #include <linux/binfmts.h> #include <linux/slab.h> #include <linux/ctype.h> @@ -699,7 +700,7 @@ static int bm_fill_super(struct super_block * sb, void * data, int silent) [3] = {"register", &bm_register_operations, S_IWUSR}, /* last one */ {""} }; - int err = simple_fill_super(sb, 0x42494e4d, bm_files); + int err = simple_fill_super(sb, BINFMTFS_MAGIC, bm_files); if (!err) sb->s_op = &s_ops; return err; @@ -726,11 +727,8 @@ static struct file_system_type bm_fs_type = { static int __init init_misc_binfmt(void) { int err = register_filesystem(&bm_fs_type); - if (!err) { - err = insert_binfmt(&misc_format); - if (err) - unregister_filesystem(&bm_fs_type); - } + if (!err) + insert_binfmt(&misc_format); return err; } diff --git a/fs/binfmt_script.c b/fs/binfmt_script.c index 396a9884591..d3b8c1f6315 100644 --- a/fs/binfmt_script.c +++ b/fs/binfmt_script.c @@ -105,7 +105,8 @@ static struct linux_binfmt script_format = { static int __init init_script_binfmt(void) { - return register_binfmt(&script_format); + register_binfmt(&script_format); + return 0; } static void __exit exit_script_binfmt(void) diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c index cc8560f6c9b..e4fc746629a 100644 --- a/fs/binfmt_som.c +++ b/fs/binfmt_som.c @@ -225,7 +225,6 @@ load_som_binary(struct linux_binprm * bprm, struct pt_regs * regs) goto out_free; /* OK, This is the point of no return */ - current->flags &= ~PF_FORKNOEXEC; current->personality = PER_HPUX; setup_new_exec(bprm); @@ -289,7 +288,8 @@ static int load_som_library(struct file *f) static int __init init_som_binfmt(void) { - return register_binfmt(&som_format); + register_binfmt(&som_format); + return 0; } static void __exit exit_som_binfmt(void) diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index c2183f3917c..e85c04b9f61 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -357,7 +357,7 @@ static void bio_integrity_generate(struct bio *bio) bix.sector_size = bi->sector_size; bio_for_each_segment(bv, bio, i) { - void *kaddr = kmap_atomic(bv->bv_page, KM_USER0); + void *kaddr = kmap_atomic(bv->bv_page); bix.data_buf = kaddr + bv->bv_offset; bix.data_size = bv->bv_len; bix.prot_buf = prot_buf; @@ -371,7 +371,7 @@ static void bio_integrity_generate(struct bio *bio) total += sectors * bi->tuple_size; BUG_ON(total > bio->bi_integrity->bip_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } } @@ -498,7 +498,7 @@ static int bio_integrity_verify(struct bio *bio) bix.sector_size = bi->sector_size; bio_for_each_segment(bv, bio, i) { - void *kaddr = kmap_atomic(bv->bv_page, KM_USER0); + void *kaddr = kmap_atomic(bv->bv_page); bix.data_buf = kaddr + bv->bv_offset; bix.data_size = bv->bv_len; bix.prot_buf = prot_buf; @@ -507,7 +507,7 @@ static int bio_integrity_verify(struct bio *bio) ret = bi->verify_fn(&bix); if (ret) { - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return ret; } @@ -517,7 +517,7 @@ static int bio_integrity_verify(struct bio *bio) total += sectors * bi->tuple_size; BUG_ON(total > bio->bi_integrity->bip_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } return ret; @@ -22,7 +22,7 @@ #include <linux/slab.h> #include <linux/init.h> #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/mempool.h> #include <linux/workqueue.h> #include <scsi/sg.h> /* for struct sg_iovec */ @@ -505,13 +505,9 @@ EXPORT_SYMBOL(bio_clone); int bio_get_nr_vecs(struct block_device *bdev) { struct request_queue *q = bdev_get_queue(bdev); - int nr_pages; - - nr_pages = ((queue_max_sectors(q) << 9) + PAGE_SIZE - 1) >> PAGE_SHIFT; - if (nr_pages > queue_max_segments(q)) - nr_pages = queue_max_segments(q); - - return nr_pages; + return min_t(unsigned, + queue_max_segments(q), + queue_max_sectors(q) / (PAGE_SIZE >> 9) + 1); } EXPORT_SYMBOL(bio_get_nr_vecs); diff --git a/fs/block_dev.c b/fs/block_dev.c index 0e575d1304b..e08f6a20a5b 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -16,6 +16,7 @@ #include <linux/blkdev.h> #include <linux/module.h> #include <linux/blkpg.h> +#include <linux/magic.h> #include <linux/buffer_head.h> #include <linux/swap.h> #include <linux/pagevec.h> @@ -109,7 +110,7 @@ void invalidate_bdev(struct block_device *bdev) /* 99% of the time, we don't need to flush the cleancache on the bdev. * But, for the strange corners, lets be cautious */ - cleancache_flush_inode(mapping); + cleancache_invalidate_inode(mapping); } EXPORT_SYMBOL(invalidate_bdev); @@ -506,7 +507,7 @@ static const struct super_operations bdev_sops = { static struct dentry *bd_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - return mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, 0x62646576); + return mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC); } static struct file_system_type bd_type = { @@ -1183,8 +1184,12 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) * The latter is necessary to prevent ghost * partitions on a removed medium. */ - if (bdev->bd_invalidated && (!ret || ret == -ENOMEDIUM)) - rescan_partitions(disk, bdev); + if (bdev->bd_invalidated) { + if (!ret) + rescan_partitions(disk, bdev); + else if (ret == -ENOMEDIUM) + invalidate_partitions(disk, bdev); + } if (ret) goto out_clear; } else { @@ -1214,8 +1219,12 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) if (bdev->bd_disk->fops->open) ret = bdev->bd_disk->fops->open(bdev, mode); /* the same as first opener case, read comment there */ - if (bdev->bd_invalidated && (!ret || ret == -ENOMEDIUM)) - rescan_partitions(bdev->bd_disk, bdev); + if (bdev->bd_invalidated) { + if (!ret) + rescan_partitions(bdev->bd_disk, bdev); + else if (ret == -ENOMEDIUM) + invalidate_partitions(bdev->bd_disk, bdev); + } if (ret) goto out_unlock_bdev; } diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index b9a843226de..0436c12da8c 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -297,7 +297,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, struct btrfs_delayed_extent_op *extent_op = head->extent_op; struct rb_node *n = &head->node.rb_node; int sgn; - int ret; + int ret = 0; if (extent_op && extent_op->update_key) btrfs_disk_key_to_cpu(info_key, &extent_op->key); @@ -392,7 +392,7 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info, struct btrfs_key *info_key, int *info_level, struct list_head *prefs) { - int ret; + int ret = 0; int slot; struct extent_buffer *leaf; struct btrfs_key key; @@ -583,7 +583,7 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, struct btrfs_path *path; struct btrfs_key info_key = { 0 }; struct btrfs_delayed_ref_root *delayed_refs = NULL; - struct btrfs_delayed_ref_head *head = NULL; + struct btrfs_delayed_ref_head *head; int info_level = 0; int ret; struct list_head prefs_delayed; @@ -607,6 +607,8 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, * at a specified point in time */ again: + head = NULL; + ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0); if (ret < 0) goto out; @@ -635,8 +637,10 @@ again: goto again; } ret = __add_delayed_refs(head, seq, &info_key, &prefs_delayed); - if (ret) + if (ret) { + spin_unlock(&delayed_refs->lock); goto out; + } } spin_unlock(&delayed_refs->lock); @@ -892,6 +896,8 @@ static char *iref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, if (eb != eb_in) free_extent_buffer(eb); ret = inode_ref_info(parent, 0, fs_root, path, &found_key); + if (ret > 0) + ret = -ENOENT; if (ret) break; next_inum = found_key.offset; diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index ad0b3ba735b..c053e90f200 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -89,7 +89,6 @@ #include "disk-io.h" #include "transaction.h" #include "extent_io.h" -#include "disk-io.h" #include "volumes.h" #include "print-tree.h" #include "locking.h" @@ -644,7 +643,7 @@ static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup( static int btrfsic_process_superblock(struct btrfsic_state *state, struct btrfs_fs_devices *fs_devices) { - int ret; + int ret = 0; struct btrfs_super_block *selected_super; struct list_head *dev_head = &fs_devices->devices; struct btrfs_device *device; @@ -1662,7 +1661,7 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state, block = btrfsic_block_hashtable_lookup(bdev, dev_bytenr, &state->block_hashtable); if (NULL != block) { - u64 bytenr; + u64 bytenr = 0; struct list_head *elem_ref_to; struct list_head *tmp_ref_to; @@ -2777,9 +2776,10 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh) printk(KERN_INFO "submit_bh(rw=0x%x, blocknr=%lu (bytenr %llu)," " size=%lu, data=%p, bdev=%p)\n", - rw, bh->b_blocknr, - (unsigned long long)dev_bytenr, bh->b_size, - bh->b_data, bh->b_bdev); + rw, (unsigned long)bh->b_blocknr, + (unsigned long long)dev_bytenr, + (unsigned long)bh->b_size, bh->b_data, + bh->b_bdev); btrfsic_process_written_block(dev_state, dev_bytenr, bh->b_data, bh->b_size, NULL, NULL, bh, rw); @@ -2844,7 +2844,7 @@ void btrfsic_submit_bio(int rw, struct bio *bio) printk(KERN_INFO "submit_bio(rw=0x%x, bi_vcnt=%u," " bi_sector=%lu (bytenr %llu), bi_bdev=%p)\n", - rw, bio->bi_vcnt, bio->bi_sector, + rw, bio->bi_vcnt, (unsigned long)bio->bi_sector, (unsigned long long)dev_bytenr, bio->bi_bdev); diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 14f1c5a0b2d..b805afb37fa 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -120,10 +120,10 @@ static int check_compressed_csum(struct inode *inode, page = cb->compressed_pages[i]; csum = ~(u32)0; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); csum = btrfs_csum_data(root, kaddr, csum, PAGE_CACHE_SIZE); btrfs_csum_final(csum, (char *)&csum); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (csum != *cb_sum) { printk(KERN_INFO "btrfs csum failed ino %llu " @@ -521,10 +521,10 @@ static noinline int add_ra_bio_pages(struct inode *inode, if (zero_offset) { int zeros; zeros = PAGE_CACHE_SIZE - zero_offset; - userpage = kmap_atomic(page, KM_USER0); + userpage = kmap_atomic(page); memset(userpage + zero_offset, 0, zeros); flush_dcache_page(page); - kunmap_atomic(userpage, KM_USER0); + kunmap_atomic(userpage); } } @@ -588,6 +588,8 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, page_offset(bio->bi_io_vec->bv_page), PAGE_CACHE_SIZE); read_unlock(&em_tree->lock); + if (!em) + return -EIO; compressed_len = em->block_len; cb = kmalloc(compressed_bio_size(root, compressed_len), GFP_NOFS); @@ -991,9 +993,9 @@ int btrfs_decompress_buf2page(char *buf, unsigned long buf_start, bytes = min(PAGE_CACHE_SIZE - *pg_offset, PAGE_CACHE_SIZE - buf_offset); bytes = min(bytes, working_bytes); - kaddr = kmap_atomic(page_out, KM_USER0); + kaddr = kmap_atomic(page_out); memcpy(kaddr + *pg_offset, buf + buf_offset, bytes); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); flush_dcache_page(page_out); *pg_offset += bytes; diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 27ebe61d3cc..80b6486fd5e 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -886,7 +886,7 @@ struct btrfs_block_rsv { u64 reserved; struct btrfs_space_info *space_info; spinlock_t lock; - unsigned int full:1; + unsigned int full; }; /* diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 7aa9cd36bf1..534266fe505 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -962,6 +962,13 @@ static int btree_releasepage(struct page *page, gfp_t gfp_flags) tree = &BTRFS_I(page->mapping->host)->io_tree; map = &BTRFS_I(page->mapping->host)->extent_tree; + /* + * We need to mask out eg. __GFP_HIGHMEM and __GFP_DMA32 as we're doing + * slab allocation from alloc_extent_state down the callchain where + * it'd hit a BUG_ON as those flags are not allowed. + */ + gfp_flags &= ~GFP_SLAB_BUG_MASK; + ret = try_release_extent_state(map, tree, page, gfp_flags); if (!ret) return 0; @@ -2253,6 +2260,12 @@ int open_ctree(struct super_block *sb, goto fail_sb_buffer; } + if (sectorsize < PAGE_SIZE) { + printk(KERN_WARNING "btrfs: Incompatible sector size " + "found on %s\n", sb->s_id); + goto fail_sb_buffer; + } + mutex_lock(&fs_info->chunk_mutex); ret = btrfs_read_sys_array(tree_root); mutex_unlock(&fs_info->chunk_mutex); @@ -2294,6 +2307,12 @@ int open_ctree(struct super_block *sb, btrfs_close_extra_devices(fs_devices); + if (!fs_devices->latest_bdev) { + printk(KERN_CRIT "btrfs: failed to read devices on %s\n", + sb->s_id); + goto fail_tree_roots; + } + retry_root_backup: blocksize = btrfs_level_size(tree_root, btrfs_super_root_level(disk_super)); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 700879ed64c..37e0a800d34 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -34,23 +34,24 @@ #include "locking.h" #include "free-space-cache.h" -/* control flags for do_chunk_alloc's force field +/* + * control flags for do_chunk_alloc's force field * CHUNK_ALLOC_NO_FORCE means to only allocate a chunk * if we really need one. * - * CHUNK_ALLOC_FORCE means it must try to allocate one - * * CHUNK_ALLOC_LIMITED means to only try and allocate one * if we have very few chunks already allocated. This is * used as part of the clustering code to help make sure * we have a good pool of storage to cluster in, without * filling the FS with empty chunks * + * CHUNK_ALLOC_FORCE means it must try to allocate one + * */ enum { CHUNK_ALLOC_NO_FORCE = 0, - CHUNK_ALLOC_FORCE = 1, - CHUNK_ALLOC_LIMITED = 2, + CHUNK_ALLOC_LIMITED = 1, + CHUNK_ALLOC_FORCE = 2, }; /* @@ -3311,7 +3312,8 @@ commit_trans: } data_sinfo->bytes_may_use += bytes; trace_btrfs_space_reservation(root->fs_info, "space_info", - (u64)data_sinfo, bytes, 1); + (u64)(unsigned long)data_sinfo, + bytes, 1); spin_unlock(&data_sinfo->lock); return 0; @@ -3332,7 +3334,8 @@ void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes) spin_lock(&data_sinfo->lock); data_sinfo->bytes_may_use -= bytes; trace_btrfs_space_reservation(root->fs_info, "space_info", - (u64)data_sinfo, bytes, 0); + (u64)(unsigned long)data_sinfo, + bytes, 0); spin_unlock(&data_sinfo->lock); } @@ -3414,7 +3417,7 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, again: spin_lock(&space_info->lock); - if (space_info->force_alloc) + if (force < space_info->force_alloc) force = space_info->force_alloc; if (space_info->full) { spin_unlock(&space_info->lock); @@ -3610,12 +3613,15 @@ static int may_commit_transaction(struct btrfs_root *root, if (space_info != delayed_rsv->space_info) return -ENOSPC; + spin_lock(&space_info->lock); spin_lock(&delayed_rsv->lock); - if (delayed_rsv->size < bytes) { + if (space_info->bytes_pinned + delayed_rsv->size < bytes) { spin_unlock(&delayed_rsv->lock); + spin_unlock(&space_info->lock); return -ENOSPC; } spin_unlock(&delayed_rsv->lock); + spin_unlock(&space_info->lock); commit: trans = btrfs_join_transaction(root); @@ -3694,9 +3700,9 @@ again: if (used + orig_bytes <= space_info->total_bytes) { space_info->bytes_may_use += orig_bytes; trace_btrfs_space_reservation(root->fs_info, - "space_info", - (u64)space_info, - orig_bytes, 1); + "space_info", + (u64)(unsigned long)space_info, + orig_bytes, 1); ret = 0; } else { /* @@ -3765,9 +3771,9 @@ again: if (used + num_bytes < space_info->total_bytes + avail) { space_info->bytes_may_use += orig_bytes; trace_btrfs_space_reservation(root->fs_info, - "space_info", - (u64)space_info, - orig_bytes, 1); + "space_info", + (u64)(unsigned long)space_info, + orig_bytes, 1); ret = 0; } else { wait_ordered = true; @@ -3912,8 +3918,8 @@ static void block_rsv_release_bytes(struct btrfs_fs_info *fs_info, spin_lock(&space_info->lock); space_info->bytes_may_use -= num_bytes; trace_btrfs_space_reservation(fs_info, "space_info", - (u64)space_info, - num_bytes, 0); + (u64)(unsigned long)space_info, + num_bytes, 0); space_info->reservation_progress++; spin_unlock(&space_info->lock); } @@ -4104,7 +4110,7 @@ static u64 calc_global_metadata_size(struct btrfs_fs_info *fs_info) num_bytes += div64_u64(data_used + meta_used, 50); if (num_bytes * 3 > meta_used) - num_bytes = div64_u64(meta_used, 3); + num_bytes = div64_u64(meta_used, 3) * 2; return ALIGN(num_bytes, fs_info->extent_root->leafsize << 10); } @@ -4131,14 +4137,14 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) block_rsv->reserved += num_bytes; sinfo->bytes_may_use += num_bytes; trace_btrfs_space_reservation(fs_info, "space_info", - (u64)sinfo, num_bytes, 1); + (u64)(unsigned long)sinfo, num_bytes, 1); } if (block_rsv->reserved >= block_rsv->size) { num_bytes = block_rsv->reserved - block_rsv->size; sinfo->bytes_may_use -= num_bytes; trace_btrfs_space_reservation(fs_info, "space_info", - (u64)sinfo, num_bytes, 0); + (u64)(unsigned long)sinfo, num_bytes, 0); sinfo->reservation_progress++; block_rsv->reserved = block_rsv->size; block_rsv->full = 1; @@ -4191,7 +4197,8 @@ void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, if (!trans->bytes_reserved) return; - trace_btrfs_space_reservation(root->fs_info, "transaction", (u64)trans, + trace_btrfs_space_reservation(root->fs_info, "transaction", + (u64)(unsigned long)trans, trans->bytes_reserved, 0); btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved); trans->bytes_reserved = 0; @@ -4709,9 +4716,9 @@ static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, space_info->bytes_reserved += num_bytes; if (reserve == RESERVE_ALLOC) { trace_btrfs_space_reservation(cache->fs_info, - "space_info", - (u64)space_info, - num_bytes, 0); + "space_info", + (u64)(unsigned long)space_info, + num_bytes, 0); space_info->bytes_may_use -= num_bytes; } } @@ -5794,6 +5801,7 @@ int btrfs_reserve_extent(struct btrfs_trans_handle *trans, u64 search_end, struct btrfs_key *ins, u64 data) { + bool final_tried = false; int ret; u64 search_start = 0; @@ -5813,22 +5821,25 @@ again: search_start, search_end, hint_byte, ins, data); - if (ret == -ENOSPC && num_bytes > min_alloc_size) { - num_bytes = num_bytes >> 1; - num_bytes = num_bytes & ~(root->sectorsize - 1); - num_bytes = max(num_bytes, min_alloc_size); - do_chunk_alloc(trans, root->fs_info->extent_root, - num_bytes, data, CHUNK_ALLOC_FORCE); - goto again; - } - if (ret == -ENOSPC && btrfs_test_opt(root, ENOSPC_DEBUG)) { - struct btrfs_space_info *sinfo; + if (ret == -ENOSPC) { + if (!final_tried) { + num_bytes = num_bytes >> 1; + num_bytes = num_bytes & ~(root->sectorsize - 1); + num_bytes = max(num_bytes, min_alloc_size); + do_chunk_alloc(trans, root->fs_info->extent_root, + num_bytes, data, CHUNK_ALLOC_FORCE); + if (num_bytes == min_alloc_size) + final_tried = true; + goto again; + } else if (btrfs_test_opt(root, ENOSPC_DEBUG)) { + struct btrfs_space_info *sinfo; - sinfo = __find_space_info(root->fs_info, data); - printk(KERN_ERR "btrfs allocation failed flags %llu, " - "wanted %llu\n", (unsigned long long)data, - (unsigned long long)num_bytes); - dump_space_info(sinfo, num_bytes, 1); + sinfo = __find_space_info(root->fs_info, data); + printk(KERN_ERR "btrfs allocation failed flags %llu, " + "wanted %llu\n", (unsigned long long)data, + (unsigned long long)num_bytes); + dump_space_info(sinfo, num_bytes, 1); + } } trace_btrfs_reserved_extent_alloc(root, ins->objectid, ins->offset); @@ -7881,9 +7892,16 @@ int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range) u64 start; u64 end; u64 trimmed = 0; + u64 total_bytes = btrfs_super_total_bytes(fs_info->super_copy); int ret = 0; - cache = btrfs_lookup_block_group(fs_info, range->start); + /* + * try to trim all FS space, our block group may start from non-zero. + */ + if (range->len == total_bytes) + cache = btrfs_lookup_first_block_group(fs_info, range->start); + else + cache = btrfs_lookup_block_group(fs_info, range->start); while (cache) { if (cache->key.objectid >= (range->start + range->len)) { diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 9d09a4f8187..2862454bcdb 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -513,6 +513,15 @@ hit_next: WARN_ON(state->end < start); last_end = state->end; + if (state->end < end && !need_resched()) + next_node = rb_next(&state->rb_node); + else + next_node = NULL; + + /* the state doesn't have the wanted bits, go ahead */ + if (!(state->state & bits)) + goto next; + /* * | ---- desired range ---- | * | state | or @@ -565,20 +574,15 @@ hit_next: goto out; } - if (state->end < end && prealloc && !need_resched()) - next_node = rb_next(&state->rb_node); - else - next_node = NULL; - set |= clear_state_bit(tree, state, &bits, wake); +next: if (last_end == (u64)-1) goto out; start = last_end + 1; if (start <= end && next_node) { state = rb_entry(next_node, struct extent_state, rb_node); - if (state->start == start) - goto hit_next; + goto hit_next; } goto search_again; @@ -961,8 +965,6 @@ hit_next: set_state_bits(tree, state, &bits); clear_state_bit(tree, state, &clear_bits, 0); - - merge_state(tree, state); if (last_end == (u64)-1) goto out; @@ -1007,7 +1009,6 @@ hit_next: if (state->end <= end) { set_state_bits(tree, state, &bits); clear_state_bit(tree, state, &clear_bits, 0); - merge_state(tree, state); if (last_end == (u64)-1) goto out; start = last_end + 1; @@ -1068,8 +1069,6 @@ hit_next: set_state_bits(tree, prealloc, &bits); clear_state_bit(tree, prealloc, &clear_bits, 0); - - merge_state(tree, prealloc); prealloc = NULL; goto out; } @@ -2154,13 +2153,46 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page, "this_mirror=%d, num_copies=%d, in_validation=%d\n", read_mode, failrec->this_mirror, num_copies, failrec->in_validation); - tree->ops->submit_bio_hook(inode, read_mode, bio, failrec->this_mirror, - failrec->bio_flags, 0); - return 0; + ret = tree->ops->submit_bio_hook(inode, read_mode, bio, + failrec->this_mirror, + failrec->bio_flags, 0); + return ret; } /* lots and lots of room for performance fixes in the end_bio funcs */ +int end_extent_writepage(struct page *page, int err, u64 start, u64 end) +{ + int uptodate = (err == 0); + struct extent_io_tree *tree; + int ret; + + tree = &BTRFS_I(page->mapping->host)->io_tree; + + if (tree->ops && tree->ops->writepage_end_io_hook) { + ret = tree->ops->writepage_end_io_hook(page, start, + end, NULL, uptodate); + if (ret) + uptodate = 0; + } + + if (!uptodate && tree->ops && + tree->ops->writepage_io_failed_hook) { + ret = tree->ops->writepage_io_failed_hook(NULL, page, + start, end, NULL); + /* Writeback already completed */ + if (ret == 0) + return 1; + } + + if (!uptodate) { + clear_extent_uptodate(tree, start, end, NULL, GFP_NOFS); + ClearPageUptodate(page); + SetPageError(page); + } + return 0; +} + /* * after a writepage IO is done, we need to: * clear the uptodate bits on error @@ -2172,13 +2204,11 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page, */ static void end_bio_extent_writepage(struct bio *bio, int err) { - int uptodate = err == 0; struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; struct extent_io_tree *tree; u64 start; u64 end; int whole_page; - int ret; do { struct page *page = bvec->bv_page; @@ -2195,28 +2225,9 @@ static void end_bio_extent_writepage(struct bio *bio, int err) if (--bvec >= bio->bi_io_vec) prefetchw(&bvec->bv_page->flags); - if (tree->ops && tree->ops->writepage_end_io_hook) { - ret = tree->ops->writepage_end_io_hook(page, start, - end, NULL, uptodate); - if (ret) - uptodate = 0; - } - - if (!uptodate && tree->ops && - tree->ops->writepage_io_failed_hook) { - ret = tree->ops->writepage_io_failed_hook(bio, page, - start, end, NULL); - if (ret == 0) { - uptodate = (err == 0); - continue; - } - } - if (!uptodate) { - clear_extent_uptodate(tree, start, end, NULL, GFP_NOFS); - ClearPageUptodate(page); - SetPageError(page); - } + if (end_extent_writepage(page, err, start, end)) + continue; if (whole_page) end_page_writeback(page); @@ -2535,10 +2546,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree, if (zero_offset) { iosize = PAGE_CACHE_SIZE - zero_offset; - userpage = kmap_atomic(page, KM_USER0); + userpage = kmap_atomic(page); memset(userpage + zero_offset, 0, iosize); flush_dcache_page(page); - kunmap_atomic(userpage, KM_USER0); + kunmap_atomic(userpage); } } while (cur <= end) { @@ -2547,10 +2558,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree, struct extent_state *cached = NULL; iosize = PAGE_CACHE_SIZE - pg_offset; - userpage = kmap_atomic(page, KM_USER0); + userpage = kmap_atomic(page); memset(userpage + pg_offset, 0, iosize); flush_dcache_page(page); - kunmap_atomic(userpage, KM_USER0); + kunmap_atomic(userpage); set_extent_uptodate(tree, cur, cur + iosize - 1, &cached, GFP_NOFS); unlock_extent_cached(tree, cur, cur + iosize - 1, @@ -2596,10 +2607,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree, char *userpage; struct extent_state *cached = NULL; - userpage = kmap_atomic(page, KM_USER0); + userpage = kmap_atomic(page); memset(userpage + pg_offset, 0, iosize); flush_dcache_page(page); - kunmap_atomic(userpage, KM_USER0); + kunmap_atomic(userpage); set_extent_uptodate(tree, cur, cur + iosize - 1, &cached, GFP_NOFS); @@ -2745,10 +2756,10 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, if (page->index == end_index) { char *userpage; - userpage = kmap_atomic(page, KM_USER0); + userpage = kmap_atomic(page); memset(userpage + pg_offset, 0, PAGE_CACHE_SIZE - pg_offset); - kunmap_atomic(userpage, KM_USER0); + kunmap_atomic(userpage); flush_dcache_page(page); } pg_offset = 0; @@ -2779,9 +2790,12 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, delalloc_start = delalloc_end + 1; continue; } - tree->ops->fill_delalloc(inode, page, delalloc_start, - delalloc_end, &page_started, - &nr_written); + ret = tree->ops->fill_delalloc(inode, page, + delalloc_start, + delalloc_end, + &page_started, + &nr_written); + BUG_ON(ret); /* * delalloc_end is already one less than the total * length, so we don't subtract one from @@ -2818,8 +2832,12 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, if (tree->ops && tree->ops->writepage_start_hook) { ret = tree->ops->writepage_start_hook(page, start, page_end); - if (ret == -EAGAIN) { - redirty_page_for_writepage(wbc, page); + if (ret) { + /* Fixup worker will requeue */ + if (ret == -EBUSY) + wbc->pages_skipped++; + else + redirty_page_for_writepage(wbc, page); update_nr_written(page, wbc, nr_written); unlock_page(page); ret = 0; @@ -3289,7 +3307,7 @@ int try_release_extent_mapping(struct extent_map_tree *map, len = end - start + 1; write_lock(&map->lock); em = lookup_extent_mapping(map, start, len); - if (IS_ERR_OR_NULL(em)) { + if (!em) { write_unlock(&map->lock); break; } @@ -3853,10 +3871,9 @@ int clear_extent_buffer_uptodate(struct extent_io_tree *tree, num_pages = num_extent_pages(eb->start, eb->len); clear_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags); - if (eb_straddles_pages(eb)) { - clear_extent_uptodate(tree, eb->start, eb->start + eb->len - 1, - cached_state, GFP_NOFS); - } + clear_extent_uptodate(tree, eb->start, eb->start + eb->len - 1, + cached_state, GFP_NOFS); + for (i = 0; i < num_pages; i++) { page = extent_buffer_page(eb, i); if (page) @@ -3909,6 +3926,8 @@ int extent_range_uptodate(struct extent_io_tree *tree, while (start <= end) { index = start >> PAGE_CACHE_SHIFT; page = find_get_page(tree->mapping, index); + if (!page) + return 1; uptodate = PageUptodate(page); page_cache_release(page); if (!uptodate) { diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index bc6a042cb6f..cecc3518c12 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -319,4 +319,5 @@ struct btrfs_mapping_tree; int repair_io_failure(struct btrfs_mapping_tree *map_tree, u64 start, u64 length, u64 logical, struct page *page, int mirror_num); +int end_extent_writepage(struct page *page, int err, u64 start, u64 end); #endif diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 33a7890b1f4..1195f09761f 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -26,8 +26,8 @@ struct extent_map { unsigned long flags; struct block_device *bdev; atomic_t refs; - unsigned int in_tree:1; - unsigned int compress_type:4; + unsigned int in_tree; + unsigned int compress_type; }; struct extent_map_tree { diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index c7fb3a4247d..078b4fd5450 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -447,13 +447,13 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, sums->bytenr = ordered->start; } - data = kmap_atomic(bvec->bv_page, KM_USER0); + data = kmap_atomic(bvec->bv_page); sector_sum->sum = ~(u32)0; sector_sum->sum = btrfs_csum_data(root, data + bvec->bv_offset, sector_sum->sum, bvec->bv_len); - kunmap_atomic(data, KM_USER0); + kunmap_atomic(data); btrfs_csum_final(sector_sum->sum, (char *)§or_sum->sum); sector_sum->bytenr = disk_bytenr; diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 859ba2dd889..e8d06b6b919 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1605,6 +1605,14 @@ static long btrfs_fallocate(struct file *file, int mode, return -EOPNOTSUPP; /* + * Make sure we have enough space before we do the + * allocation. + */ + ret = btrfs_check_data_free_space(inode, len); + if (ret) + return ret; + + /* * wait for ordered IO before we have any locks. We'll loop again * below with the locks held. */ @@ -1667,27 +1675,12 @@ static long btrfs_fallocate(struct file *file, int mode, if (em->block_start == EXTENT_MAP_HOLE || (cur_offset >= inode->i_size && !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) { - - /* - * Make sure we have enough space before we do the - * allocation. - */ - ret = btrfs_check_data_free_space(inode, last_byte - - cur_offset); - if (ret) { - free_extent_map(em); - break; - } - ret = btrfs_prealloc_file_range(inode, mode, cur_offset, last_byte - cur_offset, 1 << inode->i_blkbits, offset + len, &alloc_hint); - /* Let go of our reservation. */ - btrfs_free_reserved_data_space(inode, last_byte - - cur_offset); if (ret < 0) { free_extent_map(em); break; @@ -1715,6 +1708,8 @@ static long btrfs_fallocate(struct file *file, int mode, &cached_state, GFP_NOFS); out: mutex_unlock(&inode->i_mutex); + /* Let go of our reservation. */ + btrfs_free_reserved_data_space(inode, len); return ret; } @@ -1761,7 +1756,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin) start - root->sectorsize, root->sectorsize, 0); if (IS_ERR(em)) { - ret = -ENXIO; + ret = PTR_ERR(em); goto out; } last_end = em->start + em->len; @@ -1773,7 +1768,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin) while (1) { em = btrfs_get_extent_fiemap(inode, NULL, 0, start, len, 0); if (IS_ERR(em)) { - ret = -ENXIO; + ret = PTR_ERR(em); break; } diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index d20ff87ca60..b02e379b14c 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -777,6 +777,7 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info, spin_lock(&block_group->lock); if (block_group->disk_cache_state != BTRFS_DC_WRITTEN) { spin_unlock(&block_group->lock); + btrfs_free_path(path); goto out; } spin_unlock(&block_group->lock); @@ -1067,7 +1068,7 @@ int btrfs_write_out_cache(struct btrfs_root *root, spin_unlock(&block_group->lock); ret = 0; #ifdef DEBUG - printk(KERN_ERR "btrfs: failed to write free space cace " + printk(KERN_ERR "btrfs: failed to write free space cache " "for block group %llu\n", block_group->key.objectid); #endif } @@ -2242,7 +2243,7 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group, if (entry->bitmap) { ret = btrfs_alloc_from_bitmap(block_group, cluster, entry, bytes, - min_start); + cluster->window_start); if (ret == 0) { node = rb_next(&entry->offset_index); if (!node) @@ -2251,6 +2252,7 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group, offset_index); continue; } + cluster->window_start += bytes; } else { ret = entry->offset; @@ -2475,7 +2477,7 @@ setup_cluster_bitmap(struct btrfs_block_group_cache *block_group, } list_for_each_entry(entry, bitmaps, list) { - if (entry->bytes < min_bytes) + if (entry->bytes < bytes) continue; ret = btrfs_bitmap_cluster(block_group, entry, cluster, offset, bytes, cont1_bytes, min_bytes); diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index 213ffa86ce1..ee15d88b33d 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -438,7 +438,8 @@ int btrfs_save_ino_cache(struct btrfs_root *root, trans->bytes_reserved); if (ret) goto out; - trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans, + trace_btrfs_space_reservation(root->fs_info, "ino_cache", + (u64)(unsigned long)trans, trans->bytes_reserved, 1); again: inode = lookup_free_ino_inode(root, path); @@ -500,7 +501,8 @@ again: out_put: iput(inode); out_release: - trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans, + trace_btrfs_space_reservation(root->fs_info, "ino_cache", + (u64)(unsigned long)trans, trans->bytes_reserved, 0); btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved); out: diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0da19a0ea00..3a0b5c1f9d3 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -173,9 +173,9 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, cur_size = min_t(unsigned long, compressed_size, PAGE_CACHE_SIZE); - kaddr = kmap_atomic(cpage, KM_USER0); + kaddr = kmap_atomic(cpage); write_extent_buffer(leaf, kaddr, ptr, cur_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); i++; ptr += cur_size; @@ -187,10 +187,10 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans, page = find_get_page(inode->i_mapping, start >> PAGE_CACHE_SHIFT); btrfs_set_file_extent_compression(leaf, ei, 0); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); offset = start & (PAGE_CACHE_SIZE - 1); write_extent_buffer(leaf, kaddr + offset, ptr, size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); page_cache_release(page); } btrfs_mark_buffer_dirty(leaf); @@ -422,10 +422,10 @@ again: * sending it down to disk */ if (offset) { - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } will_compress = 1; } @@ -1555,6 +1555,7 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) struct inode *inode; u64 page_start; u64 page_end; + int ret; fixup = container_of(work, struct btrfs_writepage_fixup, work); page = fixup->page; @@ -1582,12 +1583,21 @@ again: page_end, &cached_state, GFP_NOFS); unlock_page(page); btrfs_start_ordered_extent(inode, ordered, 1); + btrfs_put_ordered_extent(ordered); goto again; } - BUG(); + ret = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state); ClearPageChecked(page); + set_page_dirty(page); out: unlock_extent_cached(&BTRFS_I(inode)->io_tree, page_start, page_end, &cached_state, GFP_NOFS); @@ -1630,7 +1640,7 @@ static int btrfs_writepage_start_hook(struct page *page, u64 start, u64 end) fixup->work.func = btrfs_writepage_fixup_worker; fixup->page = page; btrfs_queue_worker(&root->fs_info->fixup_workers, &fixup->work); - return -EAGAIN; + return -EBUSY; } static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, @@ -1863,7 +1873,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, } else { ret = get_state_private(io_tree, start, &private); } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (ret) goto zeroit; @@ -1872,7 +1882,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, if (csum != private) goto zeroit; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); good: return 0; @@ -1884,7 +1894,7 @@ zeroit: (unsigned long long)private); memset(kaddr + offset, 1, end - start + 1); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (private == 0) return 0; return -EIO; @@ -4575,7 +4585,8 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, ret = btrfs_insert_dir_item(trans, root, name, name_len, parent_inode, &key, btrfs_inode_type(inode), index); - BUG_ON(ret); + if (ret) + goto fail_dir_item; btrfs_i_size_write(parent_inode, parent_inode->i_size + name_len * 2); @@ -4583,6 +4594,23 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, ret = btrfs_update_inode(trans, root, parent_inode); } return ret; + +fail_dir_item: + if (unlikely(ino == BTRFS_FIRST_FREE_OBJECTID)) { + u64 local_index; + int err; + err = btrfs_del_root_ref(trans, root->fs_info->tree_root, + key.objectid, root->root_key.objectid, + parent_ino, &local_index, name, name_len); + + } else if (add_backref) { + u64 local_index; + int err; + + err = btrfs_del_inode_ref(trans, root, name, name_len, + ino, parent_ino, &local_index); + } + return ret; } static int btrfs_add_nondir(struct btrfs_trans_handle *trans, @@ -4909,12 +4937,12 @@ static noinline int uncompress_inline(struct btrfs_path *path, ret = btrfs_decompress(compress_type, tmp, page, extent_offset, inline_size, max_size); if (ret) { - char *kaddr = kmap_atomic(page, KM_USER0); + char *kaddr = kmap_atomic(page); unsigned long copy_size = min_t(u64, PAGE_CACHE_SIZE - pg_offset, max_size - extent_offset); memset(kaddr + pg_offset, 0, copy_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } kfree(tmp); return 0; @@ -5691,11 +5719,11 @@ static void btrfs_endio_direct_read(struct bio *bio, int err) unsigned long flags; local_irq_save(flags); - kaddr = kmap_atomic(page, KM_IRQ0); + kaddr = kmap_atomic(page); csum = btrfs_csum_data(root, kaddr + bvec->bv_offset, csum, bvec->bv_len); btrfs_csum_final(csum, (char *)&csum); - kunmap_atomic(kaddr, KM_IRQ0); + kunmap_atomic(kaddr); local_irq_restore(flags); flush_dcache_page(bvec->bv_page); @@ -6401,18 +6429,23 @@ int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) unsigned long zero_start; loff_t size; int ret; + int reserved = 0; u64 page_start; u64 page_end; ret = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE); - if (!ret) + if (!ret) { ret = btrfs_update_time(vma->vm_file); + reserved = 1; + } if (ret) { if (ret == -ENOMEM) ret = VM_FAULT_OOM; else /* -ENOSPC, -EIO, etc */ ret = VM_FAULT_SIGBUS; - goto out; + if (reserved) + goto out; + goto out_noreserve; } ret = VM_FAULT_NOPAGE; /* make the VM retry the fault */ @@ -6495,6 +6528,7 @@ out_unlock: unlock_page(page); out: btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE); +out_noreserve: return ret; } @@ -6690,8 +6724,10 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, int err; u64 index = 0; - inode = btrfs_new_inode(trans, new_root, NULL, "..", 2, new_dirid, - new_dirid, S_IFDIR | 0700, &index); + inode = btrfs_new_inode(trans, new_root, NULL, "..", 2, + new_dirid, new_dirid, + S_IFDIR | (~current_umask() & S_IRWXUGO), + &index); if (IS_ERR(inode)) return PTR_ERR(inode); inode->i_op = &btrfs_dir_inode_operations; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index ab620014bcc..d8b54715c2d 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -861,6 +861,7 @@ static int cluster_pages_for_defrag(struct inode *inode, int i_done; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; + struct extent_io_tree *tree; gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping); if (isize == 0) @@ -871,18 +872,34 @@ static int cluster_pages_for_defrag(struct inode *inode, num_pages << PAGE_CACHE_SHIFT); if (ret) return ret; -again: - ret = 0; i_done = 0; + tree = &BTRFS_I(inode)->io_tree; /* step one, lock all the pages */ for (i = 0; i < num_pages; i++) { struct page *page; +again: page = find_or_create_page(inode->i_mapping, - start_index + i, mask); + start_index + i, mask); if (!page) break; + page_start = page_offset(page); + page_end = page_start + PAGE_CACHE_SIZE - 1; + while (1) { + lock_extent(tree, page_start, page_end, GFP_NOFS); + ordered = btrfs_lookup_ordered_extent(inode, + page_start); + unlock_extent(tree, page_start, page_end, GFP_NOFS); + if (!ordered) + break; + + unlock_page(page); + btrfs_start_ordered_extent(inode, ordered, 1); + btrfs_put_ordered_extent(ordered); + lock_page(page); + } + if (!PageUptodate(page)) { btrfs_readpage(NULL, page); lock_page(page); @@ -893,15 +910,22 @@ again: break; } } + isize = i_size_read(inode); file_end = (isize - 1) >> PAGE_CACHE_SHIFT; - if (!isize || page->index > file_end || - page->mapping != inode->i_mapping) { + if (!isize || page->index > file_end) { /* whoops, we blew past eof, skip this page */ unlock_page(page); page_cache_release(page); break; } + + if (page->mapping != inode->i_mapping) { + unlock_page(page); + page_cache_release(page); + goto again; + } + pages[i] = page; i_done++; } @@ -924,25 +948,6 @@ again: lock_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end - 1, 0, &cached_state, GFP_NOFS); - ordered = btrfs_lookup_first_ordered_extent(inode, page_end - 1); - if (ordered && - ordered->file_offset + ordered->len > page_start && - ordered->file_offset < page_end) { - btrfs_put_ordered_extent(ordered); - unlock_extent_cached(&BTRFS_I(inode)->io_tree, - page_start, page_end - 1, - &cached_state, GFP_NOFS); - for (i = 0; i < i_done; i++) { - unlock_page(pages[i]); - page_cache_release(pages[i]); - } - btrfs_wait_ordered_range(inode, page_start, - page_end - page_start); - goto again; - } - if (ordered) - btrfs_put_ordered_extent(ordered); - clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start, page_end - 1, EXTENT_DIRTY | EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING, 0, 0, &cached_state, @@ -1065,7 +1070,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, i = range->start >> PAGE_CACHE_SHIFT; } if (!max_to_defrag) - max_to_defrag = last_index; + max_to_defrag = last_index + 1; /* * make writeback starts from i, so the defrag range can be @@ -1327,6 +1332,12 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file, goto out; } + if (name[0] == '.' && + (namelen == 1 || (name[1] == '.' && namelen == 2))) { + ret = -EEXIST; + goto out; + } + if (subvol) { ret = btrfs_mksubvol(&file->f_path, name, namelen, NULL, transid, readonly); diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index a178f5ebea7..743b86fa4fc 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -411,9 +411,9 @@ static int lzo_decompress(struct list_head *ws, unsigned char *data_in, bytes = min_t(unsigned long, destlen, out_len - start_byte); - kaddr = kmap_atomic(dest_page, KM_USER0); + kaddr = kmap_atomic(dest_page); memcpy(kaddr, workspace->buf + start_byte, bytes); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); out: return ret; } diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 2373b39a132..22db04550f6 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -305,7 +305,7 @@ again: spin_lock(&fs_info->reada_lock); ret = radix_tree_insert(&dev->reada_zones, - (unsigned long)zone->end >> PAGE_CACHE_SHIFT, + (unsigned long)(zone->end >> PAGE_CACHE_SHIFT), zone); spin_unlock(&fs_info->reada_lock); diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 9770cc5bfb7..390e7102b0f 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -591,7 +591,7 @@ static int scrub_fixup_check(struct scrub_bio *sbio, int ix) u64 flags = sbio->spag[ix].flags; page = sbio->bio->bi_io_vec[ix].bv_page; - buffer = kmap_atomic(page, KM_USER0); + buffer = kmap_atomic(page); if (flags & BTRFS_EXTENT_FLAG_DATA) { ret = scrub_checksum_data(sbio->sdev, sbio->spag + ix, buffer); @@ -603,7 +603,7 @@ static int scrub_fixup_check(struct scrub_bio *sbio, int ix) } else { WARN_ON(1); } - kunmap_atomic(buffer, KM_USER0); + kunmap_atomic(buffer); return ret; } @@ -792,7 +792,7 @@ static void scrub_checksum(struct btrfs_work *work) } for (i = 0; i < sbio->count; ++i) { page = sbio->bio->bi_io_vec[i].bv_page; - buffer = kmap_atomic(page, KM_USER0); + buffer = kmap_atomic(page); flags = sbio->spag[i].flags; logical = sbio->logical + i * PAGE_SIZE; ret = 0; @@ -807,7 +807,7 @@ static void scrub_checksum(struct btrfs_work *work) } else { WARN_ON(1); } - kunmap_atomic(buffer, KM_USER0); + kunmap_atomic(buffer); if (ret) { ret = scrub_recheck_error(sbio, i); if (!ret) { @@ -1367,7 +1367,8 @@ out: } static noinline_for_stack int scrub_chunk(struct scrub_dev *sdev, - u64 chunk_tree, u64 chunk_objectid, u64 chunk_offset, u64 length) + u64 chunk_tree, u64 chunk_objectid, u64 chunk_offset, u64 length, + u64 dev_offset) { struct btrfs_mapping_tree *map_tree = &sdev->dev->dev_root->fs_info->mapping_tree; @@ -1391,7 +1392,8 @@ static noinline_for_stack int scrub_chunk(struct scrub_dev *sdev, goto out; for (i = 0; i < map->num_stripes; ++i) { - if (map->stripes[i].dev == sdev->dev) { + if (map->stripes[i].dev == sdev->dev && + map->stripes[i].physical == dev_offset) { ret = scrub_stripe(sdev, map, i, chunk_offset, length); if (ret) goto out; @@ -1487,7 +1489,7 @@ int scrub_enumerate_chunks(struct scrub_dev *sdev, u64 start, u64 end) break; } ret = scrub_chunk(sdev, chunk_tree, chunk_objectid, - chunk_offset, length); + chunk_offset, length, found_key.offset); btrfs_put_block_group(cache); if (ret) break; diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 3ce97b217cb..81df3fec6a6 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -629,7 +629,6 @@ static int btrfs_fill_super(struct super_block *sb, void *data, int silent) { struct inode *inode; - struct dentry *root_dentry; struct btrfs_fs_info *fs_info = btrfs_sb(sb); struct btrfs_key key; int err; @@ -660,15 +659,12 @@ static int btrfs_fill_super(struct super_block *sb, goto fail_close; } - root_dentry = d_alloc_root(inode); - if (!root_dentry) { - iput(inode); + sb->s_root = d_make_root(inode); + if (!sb->s_root) { err = -ENOMEM; goto fail_close; } - sb->s_root = root_dentry; - save_mount_options(sb, data); cleancache_init_fs(sb); sb->s_flags |= MS_ACTIVE; diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 287a6728b1a..04b77e3ceb7 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -327,7 +327,8 @@ again: if (num_bytes) { trace_btrfs_space_reservation(root->fs_info, "transaction", - (u64)h, num_bytes, 1); + (u64)(unsigned long)h, + num_bytes, 1); h->block_rsv = &root->fs_info->trans_block_rsv; h->bytes_reserved = num_bytes; } @@ -915,7 +916,11 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, dentry->d_name.name, dentry->d_name.len, parent_inode, &key, BTRFS_FT_DIR, index); - BUG_ON(ret); + if (ret) { + pending->error = -EEXIST; + dput(parent); + goto fail; + } btrfs_i_size_write(parent_inode, parent_inode->i_size + dentry->d_name.len * 2); @@ -993,12 +998,9 @@ static noinline int create_pending_snapshots(struct btrfs_trans_handle *trans, { struct btrfs_pending_snapshot *pending; struct list_head *head = &trans->transaction->pending_snapshots; - int ret; - list_for_each_entry(pending, head, list) { - ret = create_pending_snapshot(trans, fs_info, pending); - BUG_ON(ret); - } + list_for_each_entry(pending, head, list) + create_pending_snapshot(trans, fs_info, pending); return 0; } diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index cb877e0886a..966cc74f5d6 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1957,7 +1957,8 @@ static int wait_log_commit(struct btrfs_trans_handle *trans, finish_wait(&root->log_commit_wait[index], &wait); mutex_lock(&root->log_mutex); - } while (root->log_transid < transid + 2 && + } while (root->fs_info->last_trans_log_full_commit != + trans->transid && root->log_transid < transid + 2 && atomic_read(&root->log_commit[index])); return 0; } @@ -1966,7 +1967,8 @@ static int wait_for_writer(struct btrfs_trans_handle *trans, struct btrfs_root *root) { DEFINE_WAIT(wait); - while (atomic_read(&root->log_writers)) { + while (root->fs_info->last_trans_log_full_commit != + trans->transid && atomic_read(&root->log_writers)) { prepare_to_wait(&root->log_writer_wait, &wait, TASK_UNINTERRUPTIBLE); mutex_unlock(&root->log_mutex); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 0b4e2af7954..ef41f285a47 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -459,12 +459,23 @@ int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices) { struct btrfs_device *device, *next; + struct block_device *latest_bdev = NULL; + u64 latest_devid = 0; + u64 latest_transid = 0; + mutex_lock(&uuid_mutex); again: /* This is the initialized path, it is safe to release the devices. */ list_for_each_entry_safe(device, next, &fs_devices->devices, dev_list) { - if (device->in_fs_metadata) + if (device->in_fs_metadata) { + if (!latest_transid || + device->generation > latest_transid) { + latest_devid = device->devid; + latest_transid = device->generation; + latest_bdev = device->bdev; + } continue; + } if (device->bdev) { blkdev_put(device->bdev, device->mode); @@ -487,6 +498,10 @@ again: goto again; } + fs_devices->latest_bdev = latest_bdev; + fs_devices->latest_devid = latest_devid; + fs_devices->latest_trans = latest_transid; + mutex_unlock(&uuid_mutex); return 0; } @@ -1953,7 +1968,7 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, em = lookup_extent_mapping(em_tree, chunk_offset, 1); read_unlock(&em_tree->lock); - BUG_ON(em->start > chunk_offset || + BUG_ON(!em || em->start > chunk_offset || em->start + em->len < chunk_offset); map = (struct map_lookup *)em->bdev; @@ -4356,6 +4371,20 @@ int btrfs_read_sys_array(struct btrfs_root *root) return -ENOMEM; btrfs_set_buffer_uptodate(sb); btrfs_set_buffer_lockdep_class(root->root_key.objectid, sb, 0); + /* + * The sb extent buffer is artifical and just used to read the system array. + * btrfs_set_buffer_uptodate() call does not properly mark all it's + * pages up-to-date when the page is larger: extent does not cover the + * whole page and consequently check_page_uptodate does not find all + * the page's extents up-to-date (the hole beyond sb), + * write_extent_buffer then triggers a WARN_ON. + * + * Regular short extents go through mark_extent_buffer_dirty/writeback cycle, + * but sb spans only this function. Add an explicit SetPageUptodate call + * to silence the warning eg. on PowerPC 64. + */ + if (PAGE_CACHE_SIZE > BTRFS_SUPER_INFO_SIZE) + SetPageUptodate(sb->first_page); write_extent_buffer(sb, super_copy, 0, BTRFS_SUPER_INFO_SIZE); array_size = btrfs_super_sys_array_size(super_copy); diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index faccd47c6c4..92c20654cc5 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -370,9 +370,9 @@ static int zlib_decompress(struct list_head *ws, unsigned char *data_in, PAGE_CACHE_SIZE - buf_offset); bytes = min(bytes, bytes_left); - kaddr = kmap_atomic(dest_page, KM_USER0); + kaddr = kmap_atomic(dest_page); memcpy(kaddr + pg_offset, workspace->buf + buf_offset, bytes); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); pg_offset += bytes; bytes_left -= bytes; diff --git a/fs/buffer.c b/fs/buffer.c index 1a30db77af3..70e2017edd7 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -29,7 +29,7 @@ #include <linux/file.h> #include <linux/quotaops.h> #include <linux/highmem.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/writeback.h> #include <linux/hash.h> #include <linux/suspend.h> diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index a0358c2189c..7f0771d3894 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -646,7 +646,8 @@ lookup_again: * (this is used to keep track of culling, and atimes are only * updated by read, write and readdir but not lookup or * open) */ - touch_atime(cache->mnt, next); + path.dentry = next; + touch_atime(&path); } /* open a file interface onto a data file */ diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index b60fc8bfb3e..620daad201d 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -641,10 +641,10 @@ static int __cap_is_valid(struct ceph_cap *cap) unsigned long ttl; u32 gen; - spin_lock(&cap->session->s_cap_lock); + spin_lock(&cap->session->s_gen_ttl_lock); gen = cap->session->s_cap_gen; ttl = cap->session->s_cap_ttl; - spin_unlock(&cap->session->s_cap_lock); + spin_unlock(&cap->session->s_gen_ttl_lock); if (cap->cap_gen < gen || time_after_eq(jiffies, ttl)) { dout("__cap_is_valid %p cap %p issued %s " diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 618246bc219..3e8094be460 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -975,10 +975,10 @@ static int dentry_lease_is_valid(struct dentry *dentry) di = ceph_dentry(dentry); if (di->lease_session) { s = di->lease_session; - spin_lock(&s->s_cap_lock); + spin_lock(&s->s_gen_ttl_lock); gen = s->s_cap_gen; ttl = s->s_cap_ttl; - spin_unlock(&s->s_cap_lock); + spin_unlock(&s->s_gen_ttl_lock); if (di->lease_gen == gen && time_before(jiffies, dentry->d_time) && diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 2c489378b4c..9fff9f3b17e 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -677,18 +677,19 @@ static int fill_inode(struct inode *inode, case S_IFLNK: inode->i_op = &ceph_symlink_iops; if (!ci->i_symlink) { - int symlen = iinfo->symlink_len; + u32 symlen = iinfo->symlink_len; char *sym; - BUG_ON(symlen != inode->i_size); spin_unlock(&ci->i_ceph_lock); + err = -EINVAL; + if (WARN_ON(symlen != inode->i_size)) + goto out; + err = -ENOMEM; - sym = kmalloc(symlen+1, GFP_NOFS); + sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); if (!sym) goto out; - memcpy(sym, iinfo->symlink, symlen); - sym[symlen] = 0; spin_lock(&ci->i_ceph_lock); if (!ci->i_symlink) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 23ab6a3f182..89971e137aa 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -262,6 +262,7 @@ static int parse_reply_info(struct ceph_msg *msg, /* trace */ ceph_decode_32_safe(&p, end, len, bad); if (len > 0) { + ceph_decode_need(&p, end, len, bad); err = parse_reply_info_trace(&p, p+len, info, features); if (err < 0) goto out_bad; @@ -270,6 +271,7 @@ static int parse_reply_info(struct ceph_msg *msg, /* extra */ ceph_decode_32_safe(&p, end, len, bad); if (len > 0) { + ceph_decode_need(&p, end, len, bad); err = parse_reply_info_extra(&p, p+len, info, features); if (err < 0) goto out_bad; @@ -398,9 +400,11 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc, s->s_con.peer_name.type = CEPH_ENTITY_TYPE_MDS; s->s_con.peer_name.num = cpu_to_le64(mds); - spin_lock_init(&s->s_cap_lock); + spin_lock_init(&s->s_gen_ttl_lock); s->s_cap_gen = 0; - s->s_cap_ttl = 0; + s->s_cap_ttl = jiffies - 1; + + spin_lock_init(&s->s_cap_lock); s->s_renew_requested = 0; s->s_renew_seq = 0; INIT_LIST_HEAD(&s->s_caps); @@ -1079,8 +1083,7 @@ static void renewed_caps(struct ceph_mds_client *mdsc, int wake = 0; spin_lock(&session->s_cap_lock); - was_stale = is_renew && (session->s_cap_ttl == 0 || - time_after_eq(jiffies, session->s_cap_ttl)); + was_stale = is_renew && time_after_eq(jiffies, session->s_cap_ttl); session->s_cap_ttl = session->s_renew_requested + mdsc->mdsmap->m_session_timeout*HZ; @@ -2326,10 +2329,10 @@ static void handle_session(struct ceph_mds_session *session, case CEPH_SESSION_STALE: pr_info("mds%d caps went stale, renewing\n", session->s_mds); - spin_lock(&session->s_cap_lock); + spin_lock(&session->s_gen_ttl_lock); session->s_cap_gen++; - session->s_cap_ttl = 0; - spin_unlock(&session->s_cap_lock); + session->s_cap_ttl = jiffies - 1; + spin_unlock(&session->s_gen_ttl_lock); send_renew_caps(mdsc, session); break; diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index a50ca0e3947..8c7c04ebb59 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -117,10 +117,13 @@ struct ceph_mds_session { void *s_authorizer_buf, *s_authorizer_reply_buf; size_t s_authorizer_buf_len, s_authorizer_reply_buf_len; - /* protected by s_cap_lock */ - spinlock_t s_cap_lock; + /* protected by s_gen_ttl_lock */ + spinlock_t s_gen_ttl_lock; u32 s_cap_gen; /* inc each time we get mds stale msg */ unsigned long s_cap_ttl; /* when session caps expire */ + + /* protected by s_cap_lock */ + spinlock_t s_cap_lock; struct list_head s_caps; /* all caps issued by this session */ int s_nr_caps, s_trim_caps; int s_num_cap_releases; diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index a559c80f127..f04c0961f99 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -331,7 +331,7 @@ static int build_snap_context(struct ceph_snap_realm *realm) /* alloc new snap context */ err = -ENOMEM; - if (num > ULONG_MAX / sizeof(u64) - sizeof(*snapc)) + if (num > (ULONG_MAX - sizeof(*snapc)) / sizeof(u64)) goto fail; snapc = kzalloc(sizeof(*snapc) + num*sizeof(u64), GFP_NOFS); if (!snapc) diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 00de2c9568c..1e67dd7305a 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -130,10 +130,12 @@ enum { Opt_nodirstat, Opt_rbytes, Opt_norbytes, + Opt_asyncreaddir, Opt_noasyncreaddir, Opt_dcache, Opt_nodcache, Opt_ino32, + Opt_noino32, }; static match_table_t fsopt_tokens = { @@ -153,10 +155,12 @@ static match_table_t fsopt_tokens = { {Opt_nodirstat, "nodirstat"}, {Opt_rbytes, "rbytes"}, {Opt_norbytes, "norbytes"}, + {Opt_asyncreaddir, "asyncreaddir"}, {Opt_noasyncreaddir, "noasyncreaddir"}, {Opt_dcache, "dcache"}, {Opt_nodcache, "nodcache"}, {Opt_ino32, "ino32"}, + {Opt_noino32, "noino32"}, {-1, NULL} }; @@ -232,6 +236,9 @@ static int parse_fsopt_token(char *c, void *private) case Opt_norbytes: fsopt->flags &= ~CEPH_MOUNT_OPT_RBYTES; break; + case Opt_asyncreaddir: + fsopt->flags &= ~CEPH_MOUNT_OPT_NOASYNCREADDIR; + break; case Opt_noasyncreaddir: fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR; break; @@ -244,6 +251,9 @@ static int parse_fsopt_token(char *c, void *private) case Opt_ino32: fsopt->flags |= CEPH_MOUNT_OPT_INO32; break; + case Opt_noino32: + fsopt->flags &= ~CEPH_MOUNT_OPT_INO32; + break; default: BUG_ON(token); } @@ -334,10 +344,12 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt, *path += 2; dout("server path '%s'\n", *path); - err = ceph_parse_options(popt, options, dev_name, dev_name_end, + *popt = ceph_parse_options(options, dev_name, dev_name_end, parse_fsopt_token, (void *)fsopt); - if (err) + if (IS_ERR(*popt)) { + err = PTR_ERR(*popt); goto out; + } /* success */ *pfsopt = fsopt; @@ -655,9 +667,8 @@ static struct dentry *open_root_dentry(struct ceph_fs_client *fsc, dout("open_root_inode success\n"); if (ceph_ino(inode) == CEPH_INO_ROOT && fsc->sb->s_root == NULL) { - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { - iput(inode); root = ERR_PTR(-ENOMEM); goto out; } @@ -927,6 +938,7 @@ static int __init init_ceph(void) if (ret) goto out; + ceph_xattr_init(); ret = register_filesystem(&ceph_fs_type); if (ret) goto out_icache; @@ -936,6 +948,7 @@ static int __init init_ceph(void) return 0; out_icache: + ceph_xattr_exit(); destroy_caches(); out: return ret; @@ -945,6 +958,7 @@ static void __exit exit_ceph(void) { dout("exit_ceph\n"); unregister_filesystem(&ceph_fs_type); + ceph_xattr_exit(); destroy_caches(); } diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 1421f3d875a..fc35036d258 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -367,7 +367,7 @@ static inline u32 ceph_ino_to_ino32(__u64 vino) u32 ino = vino & 0xffffffff; ino ^= vino >> 32; if (!ino) - ino = 1; + ino = 2; return ino; } @@ -733,6 +733,8 @@ extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); extern int ceph_removexattr(struct dentry *, const char *); extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); +extern void __init ceph_xattr_init(void); +extern void ceph_xattr_exit(void); /* caps.c */ extern const char *ceph_cap_string(int c); diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 857214ae8c0..35b86331d8a 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -8,9 +8,12 @@ #include <linux/xattr.h> #include <linux/slab.h> +#define XATTR_CEPH_PREFIX "ceph." +#define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1) + static bool ceph_is_valid_xattr(const char *name) { - return !strncmp(name, "ceph.", 5) || + return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) || !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) || !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || @@ -21,79 +24,91 @@ static bool ceph_is_valid_xattr(const char *name) * These define virtual xattrs exposing the recursive directory * statistics and layout metadata. */ -struct ceph_vxattr_cb { - bool readonly; +struct ceph_vxattr { char *name; + size_t name_size; /* strlen(name) + 1 (for '\0') */ size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val, size_t size); + bool readonly; }; /* directories */ -static size_t ceph_vxattrcb_entries(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_files + ci->i_subdirs); } -static size_t ceph_vxattrcb_files(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_files); } -static size_t ceph_vxattrcb_subdirs(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_subdirs); } -static size_t ceph_vxattrcb_rentries(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_rfiles + ci->i_rsubdirs); } -static size_t ceph_vxattrcb_rfiles(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_rfiles); } -static size_t ceph_vxattrcb_rsubdirs(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_rsubdirs); } -static size_t ceph_vxattrcb_rbytes(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val, size_t size) { return snprintf(val, size, "%lld", ci->i_rbytes); } -static size_t ceph_vxattrcb_rctime(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val, size_t size) { - return snprintf(val, size, "%ld.%ld", (long)ci->i_rctime.tv_sec, + return snprintf(val, size, "%ld.09%ld", (long)ci->i_rctime.tv_sec, (long)ci->i_rctime.tv_nsec); } -static struct ceph_vxattr_cb ceph_dir_vxattrs[] = { - { true, "ceph.dir.entries", ceph_vxattrcb_entries}, - { true, "ceph.dir.files", ceph_vxattrcb_files}, - { true, "ceph.dir.subdirs", ceph_vxattrcb_subdirs}, - { true, "ceph.dir.rentries", ceph_vxattrcb_rentries}, - { true, "ceph.dir.rfiles", ceph_vxattrcb_rfiles}, - { true, "ceph.dir.rsubdirs", ceph_vxattrcb_rsubdirs}, - { true, "ceph.dir.rbytes", ceph_vxattrcb_rbytes}, - { true, "ceph.dir.rctime", ceph_vxattrcb_rctime}, - { true, NULL, NULL } +#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name + +#define XATTR_NAME_CEPH(_type, _name) \ + { \ + .name = CEPH_XATTR_NAME(_type, _name), \ + .name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \ + .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \ + .readonly = true, \ + } + +static struct ceph_vxattr ceph_dir_vxattrs[] = { + XATTR_NAME_CEPH(dir, entries), + XATTR_NAME_CEPH(dir, files), + XATTR_NAME_CEPH(dir, subdirs), + XATTR_NAME_CEPH(dir, rentries), + XATTR_NAME_CEPH(dir, rfiles), + XATTR_NAME_CEPH(dir, rsubdirs), + XATTR_NAME_CEPH(dir, rbytes), + XATTR_NAME_CEPH(dir, rctime), + { 0 } /* Required table terminator */ }; +static size_t ceph_dir_vxattrs_name_size; /* total size of all names */ /* files */ -static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, +static size_t ceph_vxattrcb_file_layout(struct ceph_inode_info *ci, char *val, size_t size) { int ret; @@ -103,19 +118,32 @@ static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, (unsigned long long)ceph_file_layout_su(ci->i_layout), (unsigned long long)ceph_file_layout_stripe_count(ci->i_layout), (unsigned long long)ceph_file_layout_object_size(ci->i_layout)); - if (ceph_file_layout_pg_preferred(ci->i_layout)) - ret += snprintf(val + ret, size, "preferred_osd=%lld\n", + + if (ceph_file_layout_pg_preferred(ci->i_layout) >= 0) { + val += ret; + size -= ret; + ret += snprintf(val, size, "preferred_osd=%lld\n", (unsigned long long)ceph_file_layout_pg_preferred( ci->i_layout)); + } + return ret; } -static struct ceph_vxattr_cb ceph_file_vxattrs[] = { - { true, "ceph.layout", ceph_vxattrcb_layout}, - { NULL, NULL } +static struct ceph_vxattr ceph_file_vxattrs[] = { + XATTR_NAME_CEPH(file, layout), + /* The following extended attribute name is deprecated */ + { + .name = XATTR_CEPH_PREFIX "layout", + .name_size = sizeof (XATTR_CEPH_PREFIX "layout"), + .getxattr_cb = ceph_vxattrcb_file_layout, + .readonly = true, + }, + { 0 } /* Required table terminator */ }; +static size_t ceph_file_vxattrs_name_size; /* total size of all names */ -static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode) +static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode) { if (S_ISDIR(inode->i_mode)) return ceph_dir_vxattrs; @@ -124,14 +152,59 @@ static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode) return NULL; } -static struct ceph_vxattr_cb *ceph_match_vxattr(struct ceph_vxattr_cb *vxattr, +static size_t ceph_vxattrs_name_size(struct ceph_vxattr *vxattrs) +{ + if (vxattrs == ceph_dir_vxattrs) + return ceph_dir_vxattrs_name_size; + if (vxattrs == ceph_file_vxattrs) + return ceph_file_vxattrs_name_size; + BUG(); + + return 0; +} + +/* + * Compute the aggregate size (including terminating '\0') of all + * virtual extended attribute names in the given vxattr table. + */ +static size_t __init vxattrs_name_size(struct ceph_vxattr *vxattrs) +{ + struct ceph_vxattr *vxattr; + size_t size = 0; + + for (vxattr = vxattrs; vxattr->name; vxattr++) + size += vxattr->name_size; + + return size; +} + +/* Routines called at initialization and exit time */ + +void __init ceph_xattr_init(void) +{ + ceph_dir_vxattrs_name_size = vxattrs_name_size(ceph_dir_vxattrs); + ceph_file_vxattrs_name_size = vxattrs_name_size(ceph_file_vxattrs); +} + +void ceph_xattr_exit(void) +{ + ceph_dir_vxattrs_name_size = 0; + ceph_file_vxattrs_name_size = 0; +} + +static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode, const char *name) { - do { - if (strcmp(vxattr->name, name) == 0) - return vxattr; - vxattr++; - } while (vxattr->name); + struct ceph_vxattr *vxattr = ceph_inode_vxattrs(inode); + + if (vxattr) { + while (vxattr->name) { + if (!strcmp(vxattr->name, name)) + return vxattr; + vxattr++; + } + } + return NULL; } @@ -500,17 +573,15 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, { struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); int err; struct ceph_inode_xattr *xattr; - struct ceph_vxattr_cb *vxattr = NULL; + struct ceph_vxattr *vxattr = NULL; if (!ceph_is_valid_xattr(name)) return -ENODATA; /* let's see if a virtual xattr was requested */ - if (vxattrs) - vxattr = ceph_match_vxattr(vxattrs, name); + vxattr = ceph_match_vxattr(inode, name); spin_lock(&ci->i_ceph_lock); dout("getxattr %p ver=%lld index_ver=%lld\n", inode, @@ -566,7 +637,7 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) { struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); + struct ceph_vxattr *vxattrs = ceph_inode_vxattrs(inode); u32 vir_namelen = 0; u32 namelen; int err; @@ -594,11 +665,12 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) goto out; list_xattr: - vir_namelen = 0; - /* include virtual dir xattrs */ - if (vxattrs) - for (i = 0; vxattrs[i].name; i++) - vir_namelen += strlen(vxattrs[i].name) + 1; + /* + * Start with virtual dir xattr names (if any) (including + * terminating '\0' characters for each). + */ + vir_namelen = ceph_vxattrs_name_size(vxattrs); + /* adding 1 byte per each variable due to the null termination */ namelen = vir_namelen + ci->i_xattrs.names_size + ci->i_xattrs.count; err = -ERANGE; @@ -696,17 +768,17 @@ int ceph_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags) { struct inode *inode = dentry->d_inode; + struct ceph_vxattr *vxattr; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); + int issued; int err; + int dirty; int name_len = strlen(name); int val_len = size; char *newname = NULL; char *newval = NULL; struct ceph_inode_xattr *xattr = NULL; - int issued; int required_blob_size; - int dirty; if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; @@ -714,12 +786,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name, if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; - if (vxattrs) { - struct ceph_vxattr_cb *vxattr = - ceph_match_vxattr(vxattrs, name); - if (vxattr && vxattr->readonly) - return -EOPNOTSUPP; - } + vxattr = ceph_match_vxattr(inode, name); + if (vxattr && vxattr->readonly) + return -EOPNOTSUPP; /* preallocate memory for xattr name, value, index node */ err = -ENOMEM; @@ -728,11 +797,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name, goto out; if (val_len) { - newval = kmalloc(val_len + 1, GFP_NOFS); + newval = kmemdup(value, val_len, GFP_NOFS); if (!newval) goto out; - memcpy(newval, value, val_len); - newval[val_len] = '\0'; } xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS); @@ -742,6 +809,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name, spin_lock(&ci->i_ceph_lock); retry: issued = __ceph_caps_issued(ci, NULL); + dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued)); if (!(issued & CEPH_CAP_XATTR_EXCL)) goto do_sync; __build_xattrs(inode); @@ -750,7 +818,7 @@ retry: if (!ci->i_xattrs.prealloc_blob || required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) { - struct ceph_buffer *blob = NULL; + struct ceph_buffer *blob; spin_unlock(&ci->i_ceph_lock); dout(" preaallocating new blob size=%d\n", required_blob_size); @@ -764,12 +832,13 @@ retry: goto retry; } - dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued)); err = __set_xattr(ci, newname, name_len, newval, val_len, 1, 1, 1, &xattr); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); ci->i_xattrs.dirty = true; inode->i_ctime = CURRENT_TIME; + spin_unlock(&ci->i_ceph_lock); if (dirty) __mark_inode_dirty(inode, dirty); @@ -814,8 +883,8 @@ static int ceph_send_removexattr(struct dentry *dentry, const char *name) int ceph_removexattr(struct dentry *dentry, const char *name) { struct inode *inode = dentry->d_inode; + struct ceph_vxattr *vxattr; struct ceph_inode_info *ci = ceph_inode(inode); - struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); int issued; int err; int required_blob_size; @@ -827,22 +896,19 @@ int ceph_removexattr(struct dentry *dentry, const char *name) if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; - if (vxattrs) { - struct ceph_vxattr_cb *vxattr = - ceph_match_vxattr(vxattrs, name); - if (vxattr && vxattr->readonly) - return -EOPNOTSUPP; - } + vxattr = ceph_match_vxattr(inode, name); + if (vxattr && vxattr->readonly) + return -EOPNOTSUPP; err = -ENOMEM; spin_lock(&ci->i_ceph_lock); - __build_xattrs(inode); retry: issued = __ceph_caps_issued(ci, NULL); dout("removexattr %p issued %s\n", inode, ceph_cap_string(issued)); if (!(issued & CEPH_CAP_XATTR_EXCL)) goto do_sync; + __build_xattrs(inode); required_blob_size = __get_required_blob_size(ci, 0, 0); @@ -863,10 +929,10 @@ retry: } err = __remove_xattr_by_name(ceph_inode(inode), name); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); ci->i_xattrs.dirty = true; inode->i_ctime = CURRENT_TIME; - spin_unlock(&ci->i_ceph_lock); if (dirty) __mark_inode_dirty(inode, dirty); diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig index f66cc162515..2b243af70aa 100644 --- a/fs/cifs/Kconfig +++ b/fs/cifs/Kconfig @@ -139,8 +139,7 @@ config CIFS_DFS_UPCALL points. If unsure, say N. config CIFS_FSCACHE - bool "Provide CIFS client caching support (EXPERIMENTAL)" - depends on EXPERIMENTAL + bool "Provide CIFS client caching support" depends on CIFS=m && FSCACHE || CIFS=y && FSCACHE=y help Makes CIFS FS-Cache capable. Say Y here if you want your CIFS data @@ -148,8 +147,8 @@ config CIFS_FSCACHE manager. If unsure, say N. config CIFS_ACL - bool "Provide CIFS ACL support (EXPERIMENTAL)" - depends on EXPERIMENTAL && CIFS_XATTR && KEYS + bool "Provide CIFS ACL support" + depends on CIFS_XATTR && KEYS help Allows to fetch CIFS/NTFS ACL from the server. The DACL blob is handed over to the application/caller. diff --git a/fs/cifs/README b/fs/cifs/README index 895da1dc155..b7d782bab79 100644 --- a/fs/cifs/README +++ b/fs/cifs/README @@ -753,10 +753,6 @@ module loading or during the runtime by using the interface i.e. echo "value" > /sys/module/cifs/parameters/<param> -1. echo_retries - The number of echo attempts before giving up and - reconnecting to the server. The default is 5. The value 0 - means never reconnect. - -2. enable_oplocks - Enable or disable oplocks. Oplocks are enabled by default. +1. enable_oplocks - Enable or disable oplocks. Oplocks are enabled by default. [Y/y/1]. To disable use any of [N/n/0]. diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 84e8c072470..573b899b5a5 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -171,8 +171,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) seq_printf(m, "TCP status: %d\n\tLocal Users To " "Server: %d SecMode: 0x%x Req On Wire: %d", server->tcpStatus, server->srv_count, - server->sec_mode, - atomic_read(&server->inFlight)); + server->sec_mode, in_flight(server)); #ifdef CONFIG_CIFS_STATS2 seq_printf(m, " In Send: %d In MaxReq Wait: %d", @@ -676,14 +675,23 @@ static ssize_t cifs_multiuser_mount_proc_write(struct file *file, { char c; int rc; + static bool warned; rc = get_user(c, buffer); if (rc) return rc; if (c == '0' || c == 'n' || c == 'N') multiuser_mount = 0; - else if (c == '1' || c == 'y' || c == 'Y') + else if (c == '1' || c == 'y' || c == 'Y') { multiuser_mount = 1; + if (!warned) { + warned = true; + printk(KERN_WARNING "CIFS VFS: The legacy multiuser " + "mount code is scheduled to be deprecated in " + "3.5. Please switch to using the multiuser " + "mount option."); + } + } return count; } diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c index 2272fd5fe5b..e622863b292 100644 --- a/fs/cifs/cifs_spnego.c +++ b/fs/cifs/cifs_spnego.c @@ -113,9 +113,11 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo) MAX_MECH_STR_LEN + UID_KEY_LEN + (sizeof(uid_t) * 2) + CREDUID_KEY_LEN + (sizeof(uid_t) * 2) + - USER_KEY_LEN + strlen(sesInfo->user_name) + PID_KEY_LEN + (sizeof(pid_t) * 2) + 1; + if (sesInfo->user_name) + desc_len += USER_KEY_LEN + strlen(sesInfo->user_name); + spnego_key = ERR_PTR(-ENOMEM); description = kzalloc(desc_len, GFP_KERNEL); if (description == NULL) @@ -152,8 +154,10 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo) dp = description + strlen(description); sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid); - dp = description + strlen(description); - sprintf(dp, ";user=%s", sesInfo->user_name); + if (sesInfo->user_name) { + dp = description + strlen(description); + sprintf(dp, ";user=%s", sesInfo->user_name); + } dp = description + strlen(description); sprintf(dp, ";pid=0x%x", current->pid); diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c index 1b2e180b018..fbb9da95184 100644 --- a/fs/cifs/cifs_unicode.c +++ b/fs/cifs/cifs_unicode.c @@ -27,17 +27,17 @@ #include "cifs_debug.h" /* - * cifs_ucs2_bytes - how long will a string be after conversion? - * @ucs - pointer to input string + * cifs_utf16_bytes - how long will a string be after conversion? + * @utf16 - pointer to input string * @maxbytes - don't go past this many bytes of input string * @codepage - destination codepage * - * Walk a ucs2le string and return the number of bytes that the string will + * Walk a utf16le string and return the number of bytes that the string will * be after being converted to the given charset, not including any null * termination required. Don't walk past maxbytes in the source buffer. */ int -cifs_ucs2_bytes(const __le16 *from, int maxbytes, +cifs_utf16_bytes(const __le16 *from, int maxbytes, const struct nls_table *codepage) { int i; @@ -122,7 +122,7 @@ cp_convert: } /* - * cifs_from_ucs2 - convert utf16le string to local charset + * cifs_from_utf16 - convert utf16le string to local charset * @to - destination buffer * @from - source buffer * @tolen - destination buffer size (in bytes) @@ -130,7 +130,7 @@ cp_convert: * @codepage - codepage to which characters should be converted * @mapchar - should characters be remapped according to the mapchars option? * - * Convert a little-endian ucs2le string (as sent by the server) to a string + * Convert a little-endian utf16le string (as sent by the server) to a string * in the provided codepage. The tolen and fromlen parameters are to ensure * that the code doesn't walk off of the end of the buffer (which is always * a danger if the alignment of the source buffer is off). The destination @@ -139,12 +139,12 @@ cp_convert: * null terminator). * * Note that some windows versions actually send multiword UTF-16 characters - * instead of straight UCS-2. The linux nls routines however aren't able to + * instead of straight UTF16-2. The linux nls routines however aren't able to * deal with those characters properly. In the event that we get some of * those characters, they won't be translated properly. */ int -cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen, +cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen, const struct nls_table *codepage, bool mapchar) { int i, charlen, safelen; @@ -190,13 +190,13 @@ cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen, } /* - * NAME: cifs_strtoUCS() + * NAME: cifs_strtoUTF16() * * FUNCTION: Convert character string to unicode string * */ int -cifs_strtoUCS(__le16 *to, const char *from, int len, +cifs_strtoUTF16(__le16 *to, const char *from, int len, const struct nls_table *codepage) { int charlen; @@ -206,7 +206,7 @@ cifs_strtoUCS(__le16 *to, const char *from, int len, for (i = 0; len && *from; i++, from += charlen, len -= charlen) { charlen = codepage->char2uni(from, len, &wchar_to); if (charlen < 1) { - cERROR(1, "strtoUCS: char2uni of 0x%x returned %d", + cERROR(1, "strtoUTF16: char2uni of 0x%x returned %d", *from, charlen); /* A question mark */ wchar_to = 0x003f; @@ -220,7 +220,8 @@ cifs_strtoUCS(__le16 *to, const char *from, int len, } /* - * cifs_strndup_from_ucs - copy a string from wire format to the local codepage + * cifs_strndup_from_utf16 - copy a string from wire format to the local + * codepage * @src - source string * @maxlen - don't walk past this many bytes in the source string * @is_unicode - is this a unicode string? @@ -231,19 +232,19 @@ cifs_strtoUCS(__le16 *to, const char *from, int len, * error. */ char * -cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode, - const struct nls_table *codepage) +cifs_strndup_from_utf16(const char *src, const int maxlen, + const bool is_unicode, const struct nls_table *codepage) { int len; char *dst; if (is_unicode) { - len = cifs_ucs2_bytes((__le16 *) src, maxlen, codepage); + len = cifs_utf16_bytes((__le16 *) src, maxlen, codepage); len += nls_nullsize(codepage); dst = kmalloc(len, GFP_KERNEL); if (!dst) return NULL; - cifs_from_ucs2(dst, (__le16 *) src, len, maxlen, codepage, + cifs_from_utf16(dst, (__le16 *) src, len, maxlen, codepage, false); } else { len = strnlen(src, maxlen); @@ -264,7 +265,7 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode, * names are little endian 16 bit Unicode on the wire */ int -cifsConvertToUCS(__le16 *target, const char *source, int srclen, +cifsConvertToUTF16(__le16 *target, const char *source, int srclen, const struct nls_table *cp, int mapChars) { int i, j, charlen; @@ -273,7 +274,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen, wchar_t tmp; if (!mapChars) - return cifs_strtoUCS(target, source, PATH_MAX, cp); + return cifs_strtoUTF16(target, source, PATH_MAX, cp); for (i = 0, j = 0; i < srclen; j++) { src_char = source[i]; @@ -281,7 +282,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen, switch (src_char) { case 0: put_unaligned(0, &target[j]); - goto ctoUCS_out; + goto ctoUTF16_out; case ':': dst_char = cpu_to_le16(UNI_COLON); break; @@ -326,7 +327,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen, put_unaligned(dst_char, &target[j]); } -ctoUCS_out: +ctoUTF16_out: return i; } diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h index 6d02fd56056..a513a546700 100644 --- a/fs/cifs/cifs_unicode.h +++ b/fs/cifs/cifs_unicode.h @@ -74,16 +74,16 @@ extern const struct UniCaseRange CifsUniLowerRange[]; #endif /* UNIUPR_NOLOWER */ #ifdef __KERNEL__ -int cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen, - const struct nls_table *codepage, bool mapchar); -int cifs_ucs2_bytes(const __le16 *from, int maxbytes, - const struct nls_table *codepage); -int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *); -char *cifs_strndup_from_ucs(const char *src, const int maxlen, - const bool is_unicode, - const struct nls_table *codepage); -extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen, - const struct nls_table *cp, int mapChars); +int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen, + const struct nls_table *codepage, bool mapchar); +int cifs_utf16_bytes(const __le16 *from, int maxbytes, + const struct nls_table *codepage); +int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *); +char *cifs_strndup_from_utf16(const char *src, const int maxlen, + const bool is_unicode, + const struct nls_table *codepage); +extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen, + const struct nls_table *cp, int mapChars); #endif diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index 72ddf23ef6f..3cc1b251ca0 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -556,6 +556,7 @@ init_cifs_idmap(void) /* instruct request_key() to use this special keyring as a cache for * the results it looks up */ + set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags); cred->thread_keyring = keyring; cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING; root_cred = cred; @@ -909,6 +910,8 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl, umode_t group_mask = S_IRWXG; umode_t other_mask = S_IRWXU | S_IRWXG | S_IRWXO; + if (num_aces > ULONG_MAX / sizeof(struct cifs_ace *)) + return; ppace = kmalloc(num_aces * sizeof(struct cifs_ace *), GFP_KERNEL); if (!ppace) { diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 5d9b9acc5fc..63c460e503b 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -327,7 +327,7 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp) attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME); attrptr->length = cpu_to_le16(2 * dlen); blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name); - cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp); + cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp); return 0; } @@ -376,7 +376,7 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp) kmalloc(attrsize + 1, GFP_KERNEL); if (!ses->domainName) return -ENOMEM; - cifs_from_ucs2(ses->domainName, + cifs_from_utf16(ses->domainName, (__le16 *)blobptr, attrsize, attrsize, nls_cp, false); break; @@ -420,15 +420,20 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, } /* convert ses->user_name to unicode and uppercase */ - len = strlen(ses->user_name); + len = ses->user_name ? strlen(ses->user_name) : 0; user = kmalloc(2 + (len * 2), GFP_KERNEL); if (user == NULL) { cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n"); rc = -ENOMEM; return rc; } - len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp); - UniStrupr(user); + + if (len) { + len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp); + UniStrupr(user); + } else { + memset(user, '\0', 2); + } rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, (char *)user, 2 * len); @@ -448,8 +453,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, rc = -ENOMEM; return rc; } - len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len, - nls_cp); + len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len, + nls_cp); rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, (char *)domain, 2 * len); @@ -468,7 +473,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, rc = -ENOMEM; return rc; } - len = cifs_strtoUCS((__le16 *)server, ses->serverName, len, + len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len, nls_cp); rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index b1fd382d195..eee522c56ef 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -76,12 +76,7 @@ MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " unsigned int cifs_max_pending = CIFS_MAX_REQ; module_param(cifs_max_pending, int, 0444); MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " - "Default: 50 Range: 2 to 256"); -unsigned short echo_retries = 5; -module_param(echo_retries, ushort, 0644); -MODULE_PARM_DESC(echo_retries, "Number of echo attempts before giving up and " - "reconnecting server. Default: 5. 0 means " - "never reconnect."); + "Default: 32767 Range: 2 to 32767."); module_param(enable_oplocks, bool, 0644); MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks (bool). Default:" "y/Y/1"); @@ -119,12 +114,10 @@ cifs_read_super(struct super_block *sb) if (IS_ERR(inode)) { rc = PTR_ERR(inode); - inode = NULL; goto out_no_root; } - sb->s_root = d_alloc_root(inode); - + sb->s_root = d_make_root(inode); if (!sb->s_root) { rc = -ENOMEM; goto out_no_root; @@ -147,9 +140,6 @@ cifs_read_super(struct super_block *sb) out_no_root: cERROR(1, "cifs_read_super: get root inode failed"); - if (inode) - iput(inode); - return rc; } @@ -1116,9 +1106,9 @@ init_cifs(void) if (cifs_max_pending < 2) { cifs_max_pending = 2; cFYI(1, "cifs_max_pending set to min of 2"); - } else if (cifs_max_pending > 256) { - cifs_max_pending = 256; - cFYI(1, "cifs_max_pending set to max of 256"); + } else if (cifs_max_pending > CIFS_MAX_REQ) { + cifs_max_pending = CIFS_MAX_REQ; + cFYI(1, "cifs_max_pending set to max of %u", CIFS_MAX_REQ); } rc = cifs_fscache_register(); @@ -1180,11 +1170,8 @@ static void __exit exit_cifs(void) { cFYI(DBG2, "exit_cifs"); - cifs_proc_clean(); - cifs_fscache_unregister(); -#ifdef CONFIG_CIFS_DFS_UPCALL + unregister_filesystem(&cifs_fs_type); cifs_dfs_release_automount_timer(); -#endif #ifdef CONFIG_CIFS_ACL cifs_destroy_idmaptrees(); exit_cifs_idmap(); @@ -1192,10 +1179,11 @@ exit_cifs(void) #ifdef CONFIG_CIFS_UPCALL unregister_key_type(&cifs_spnego_key_type); #endif - unregister_filesystem(&cifs_fs_type); - cifs_destroy_inodecache(); - cifs_destroy_mids(); cifs_destroy_request_bufs(); + cifs_destroy_mids(); + cifs_destroy_inodecache(); + cifs_fscache_unregister(); + cifs_proc_clean(); } MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index ba53c1c6c6c..339ebe3ebc0 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -55,14 +55,9 @@ /* * MAX_REQ is the maximum number of requests that WE will send - * on one socket concurrently. It also matches the most common - * value of max multiplex returned by servers. We may - * eventually want to use the negotiated value (in case - * future servers can handle more) when we are more confident that - * we will not have problems oveloading the socket with pending - * write data. + * on one socket concurrently. */ -#define CIFS_MAX_REQ 50 +#define CIFS_MAX_REQ 32767 #define RFC1001_NAME_LEN 15 #define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1) @@ -255,7 +250,9 @@ struct TCP_Server_Info { bool noblocksnd; /* use blocking sendmsg */ bool noautotune; /* do not autotune send buf sizes */ bool tcp_nodelay; - atomic_t inFlight; /* number of requests on the wire to server */ + int credits; /* send no more requests at once */ + unsigned int in_flight; /* number of requests on the wire to server */ + spinlock_t req_lock; /* protect the two values above */ struct mutex srv_mutex; struct task_struct *tsk; char server_GUID[16]; @@ -263,6 +260,7 @@ struct TCP_Server_Info { bool session_estab; /* mark when very first sess is established */ u16 dialect; /* dialect index that server chose */ enum securityEnum secType; + bool oplocks:1; /* enable oplocks */ unsigned int maxReq; /* Clients should submit no more */ /* than maxReq distinct unanswered SMBs to the server when using */ /* multiplexed reads or writes */ @@ -307,6 +305,36 @@ struct TCP_Server_Info { #endif }; +static inline unsigned int +in_flight(struct TCP_Server_Info *server) +{ + unsigned int num; + spin_lock(&server->req_lock); + num = server->in_flight; + spin_unlock(&server->req_lock); + return num; +} + +static inline int* +get_credits_field(struct TCP_Server_Info *server) +{ + /* + * This will change to switch statement when we reserve slots for echos + * and oplock breaks. + */ + return &server->credits; +} + +static inline bool +has_credits(struct TCP_Server_Info *server, int *credits) +{ + int num; + spin_lock(&server->req_lock); + num = *credits; + spin_unlock(&server->req_lock); + return num > 0; +} + /* * Macros to allow the TCP_Server_Info->net field and related code to drop out * when CONFIG_NET_NS isn't set. @@ -879,6 +907,8 @@ require use of the stronger protocol */ #define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */ #endif /* UPCALL */ #else /* do not allow weak pw hash */ +#define CIFSSEC_MUST_LANMAN 0 +#define CIFSSEC_MUST_PLNTXT 0 #ifdef CONFIG_CIFS_UPCALL #define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */ #else @@ -1008,9 +1038,6 @@ GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */ GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */ GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/ -/* reconnect after this many failed echo attempts */ -GLOBAL_EXTERN unsigned short echo_retries; - #ifdef CONFIG_CIFS_ACL GLOBAL_EXTERN struct rb_root uidtree; GLOBAL_EXTERN struct rb_root gidtree; diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 6f4e243e0f6..503e73d8bdb 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -88,6 +88,9 @@ extern int SendReceiveBlockingLock(const unsigned int xid, struct smb_hdr *in_buf , struct smb_hdr *out_buf, int *bytes_returned); +extern void cifs_add_credits(struct TCP_Server_Info *server, + const unsigned int add); +extern void cifs_set_credits(struct TCP_Server_Info *server, const int val); extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length); extern bool is_valid_oplock_break(struct smb_hdr *smb, struct TCP_Server_Info *); @@ -168,7 +171,13 @@ extern struct smb_vol *cifs_get_volume_info(char *mount_data, const char *devname); extern int cifs_mount(struct cifs_sb_info *, struct smb_vol *); extern void cifs_umount(struct cifs_sb_info *); + +#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) extern void cifs_dfs_release_automount_timer(void); +#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */ +#define cifs_dfs_release_automount_timer() do { } while (0) +#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */ + void cifs_proc_init(void); void cifs_proc_clean(void); diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 6600aa2d2ef..70aac35c398 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -458,7 +458,10 @@ CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) goto neg_err_exit; } server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode); - server->maxReq = le16_to_cpu(rsp->MaxMpxCount); + server->maxReq = min_t(unsigned int, + le16_to_cpu(rsp->MaxMpxCount), + cifs_max_pending); + cifs_set_credits(server, server->maxReq); server->maxBuf = le16_to_cpu(rsp->MaxBufSize); server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); /* even though we do not use raw we might as well set this @@ -564,7 +567,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses) /* one byte, so no need to convert this or EncryptionKeyLen from little endian */ - server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); + server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), + cifs_max_pending); + cifs_set_credits(server, server->maxReq); /* probably no need to store and check maxvcs */ server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); @@ -716,8 +721,7 @@ cifs_echo_callback(struct mid_q_entry *mid) struct TCP_Server_Info *server = mid->callback_data; DeleteMidQEntry(mid); - atomic_dec(&server->inFlight); - wake_up(&server->request_q); + cifs_add_credits(server, 1); } int @@ -821,8 +825,8 @@ PsxDelete: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB add path length overrun check */ @@ -893,8 +897,8 @@ DelFileRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve check for buffer overruns BB */ @@ -938,8 +942,8 @@ RmDirRetry: return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, - PATH_MAX, nls_codepage, remap); + name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve check for buffer overruns BB */ @@ -981,8 +985,8 @@ MkDirRetry: return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, - PATH_MAX, nls_codepage, remap); + name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve check for buffer overruns BB */ @@ -1030,8 +1034,8 @@ PsxCreat: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, name, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, name, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -1197,8 +1201,8 @@ OldOpenRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { count = 1; /* account for one byte pad to word boundary */ name_len = - cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), - fileName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), + fileName, PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve check for buffer overruns BB */ @@ -1304,8 +1308,8 @@ openRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { count = 1; /* account for one byte pad to word boundary */ name_len = - cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), - fileName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), + fileName, PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; pSMB->NameLength = cpu_to_le16(name_len); @@ -1669,8 +1673,7 @@ cifs_readv_callback(struct mid_q_entry *mid) queue_work(system_nrt_wq, &rdata->work); DeleteMidQEntry(mid); - atomic_dec(&server->inFlight); - wake_up(&server->request_q); + cifs_add_credits(server, 1); } /* cifs_async_readv - send an async write, and set up mid to handle result */ @@ -2110,8 +2113,7 @@ cifs_writev_callback(struct mid_q_entry *mid) queue_work(system_nrt_wq, &wdata->work); DeleteMidQEntry(mid); - atomic_dec(&tcon->ses->server->inFlight); - wake_up(&tcon->ses->server->request_q); + cifs_add_credits(tcon->ses->server, 1); } /* cifs_async_writev - send an async write, and set up mid to handle result */ @@ -2649,16 +2651,16 @@ renameRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; pSMB->OldFileName[name_len] = 0x04; /* pad */ /* protocol requires ASCII signature byte on Unicode string */ pSMB->OldFileName[name_len + 1] = 0x00; name_len2 = - cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], - toName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], + toName, PATH_MAX, nls_codepage, remap); name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ } else { /* BB improve the check for buffer overruns BB */ @@ -2738,10 +2740,12 @@ int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon, /* unicode only call */ if (target_name == NULL) { sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); - len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, + len_of_str = + cifsConvertToUTF16((__le16 *)rename_info->target_name, dummy_string, 24, nls_codepage, remap); } else { - len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, + len_of_str = + cifsConvertToUTF16((__le16 *)rename_info->target_name, target_name, PATH_MAX, nls_codepage, remap); } @@ -2795,17 +2799,17 @@ copyRetry: pSMB->Flags = cpu_to_le16(flags & COPY_TREE); if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, - fromName, PATH_MAX, nls_codepage, - remap); + name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, + fromName, PATH_MAX, nls_codepage, + remap); name_len++; /* trailing null */ name_len *= 2; pSMB->OldFileName[name_len] = 0x04; /* pad */ /* protocol requires ASCII signature byte on Unicode string */ pSMB->OldFileName[name_len + 1] = 0x00; name_len2 = - cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], - toName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], + toName, PATH_MAX, nls_codepage, remap); name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ } else { /* BB improve the check for buffer overruns BB */ @@ -2861,9 +2865,9 @@ createSymLinkRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX - /* find define for this maxpathcomponent */ - , nls_codepage); + cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName, + /* find define for this maxpathcomponent */ + PATH_MAX, nls_codepage); name_len++; /* trailing null */ name_len *= 2; @@ -2885,9 +2889,9 @@ createSymLinkRetry: data_offset = (char *) (&pSMB->hdr.Protocol) + offset; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len_target = - cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX - /* find define for this maxpathcomponent */ - , nls_codepage); + cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX + /* find define for this maxpathcomponent */ + , nls_codepage); name_len_target++; /* trailing null */ name_len_target *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -2949,8 +2953,8 @@ createHardLinkRetry: return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, - PATH_MAX, nls_codepage, remap); + name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; @@ -2972,8 +2976,8 @@ createHardLinkRetry: data_offset = (char *) (&pSMB->hdr.Protocol) + offset; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len_target = - cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, - nls_codepage, remap); + cifsConvertToUTF16((__le16 *) data_offset, fromName, + PATH_MAX, nls_codepage, remap); name_len_target++; /* trailing null */ name_len_target *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -3042,8 +3046,8 @@ winCreateHardLinkRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; @@ -3051,8 +3055,8 @@ winCreateHardLinkRetry: pSMB->OldFileName[name_len] = 0x04; pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ name_len2 = - cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], - toName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], + toName, PATH_MAX, nls_codepage, remap); name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ } else { /* BB improve the check for buffer overruns BB */ @@ -3108,8 +3112,8 @@ querySymLinkRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage); + cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName, + PATH_MAX, nls_codepage); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -3166,8 +3170,8 @@ querySymLinkRetry: is_unicode = false; /* BB FIXME investigate remapping reserved chars here */ - *symlinkinfo = cifs_strndup_from_ucs(data_start, count, - is_unicode, nls_codepage); + *symlinkinfo = cifs_strndup_from_utf16(data_start, + count, is_unicode, nls_codepage); if (!*symlinkinfo) rc = -ENOMEM; } @@ -3450,8 +3454,9 @@ queryAclRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, + searchName, PATH_MAX, nls_codepage, + remap); name_len++; /* trailing null */ name_len *= 2; pSMB->FileName[name_len] = 0; @@ -3537,8 +3542,8 @@ setAclRetry: return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -3948,8 +3953,9 @@ QInfRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, + searchName, PATH_MAX, nls_codepage, + remap); name_len++; /* trailing null */ name_len *= 2; } else { @@ -4086,8 +4092,8 @@ QPathInfoRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -4255,8 +4261,8 @@ UnixQPathInfoRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -4344,8 +4350,8 @@ findFirstRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, + PATH_MAX, nls_codepage, remap); /* We can not add the asterik earlier in case it got remapped to 0xF03A as if it were part of the directory name instead of a wildcard */ @@ -4656,8 +4662,9 @@ GetInodeNumberRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, + searchName, PATH_MAX, nls_codepage, + remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -4794,9 +4801,9 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, rc = -ENOMEM; goto parse_DFS_referrals_exit; } - cifsConvertToUCS((__le16 *) tmp, searchName, - PATH_MAX, nls_codepage, remap); - node->path_consumed = cifs_ucs2_bytes(tmp, + cifsConvertToUTF16((__le16 *) tmp, searchName, + PATH_MAX, nls_codepage, remap); + node->path_consumed = cifs_utf16_bytes(tmp, le16_to_cpu(pSMBr->PathConsumed), nls_codepage); kfree(tmp); @@ -4809,8 +4816,8 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, /* copy DfsPath */ temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); max_len = data_end - temp; - node->path_name = cifs_strndup_from_ucs(temp, max_len, - is_unicode, nls_codepage); + node->path_name = cifs_strndup_from_utf16(temp, max_len, + is_unicode, nls_codepage); if (!node->path_name) { rc = -ENOMEM; goto parse_DFS_referrals_exit; @@ -4819,8 +4826,8 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, /* copy link target UNC */ temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); max_len = data_end - temp; - node->node_name = cifs_strndup_from_ucs(temp, max_len, - is_unicode, nls_codepage); + node->node_name = cifs_strndup_from_utf16(temp, max_len, + is_unicode, nls_codepage); if (!node->node_name) rc = -ENOMEM; } @@ -4873,8 +4880,9 @@ getDFSRetry: if (ses->capabilities & CAP_UNICODE) { pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; name_len = - cifsConvertToUCS((__le16 *) pSMB->RequestFileName, - searchName, PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, + searchName, PATH_MAX, nls_codepage, + remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -5506,8 +5514,8 @@ SetEOFRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -5796,8 +5804,8 @@ SetTimesRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -5877,8 +5885,8 @@ SetAttrLgcyRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - ConvertToUCS((__le16 *) pSMB->fileName, fileName, - PATH_MAX, nls_codepage); + ConvertToUTF16((__le16 *) pSMB->fileName, fileName, + PATH_MAX, nls_codepage); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -6030,8 +6038,8 @@ setPermsRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -6123,8 +6131,8 @@ QAllEAsRetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { list_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, + PATH_MAX, nls_codepage, remap); list_len++; /* trailing null */ list_len *= 2; } else { /* BB improve the check for buffer overruns BB */ @@ -6301,8 +6309,8 @@ SetEARetry: if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = - cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, - PATH_MAX, nls_codepage, remap); + cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, + PATH_MAX, nls_codepage, remap); name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 4666780f315..5560e1d5e54 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -38,6 +38,7 @@ #include <asm/processor.h> #include <linux/inet.h> #include <linux/module.h> +#include <keys/user-type.h> #include <net/ipv6.h> #include "cifspdu.h" #include "cifsglob.h" @@ -225,74 +226,90 @@ static int check2ndT2(struct smb_hdr *pSMB) static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) { - struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; + struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)psecond; struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; - char *data_area_of_target; - char *data_area_of_buf2; + char *data_area_of_tgt; + char *data_area_of_src; int remaining; - unsigned int byte_count, total_in_buf; - __u16 total_data_size, total_in_buf2; + unsigned int byte_count, total_in_tgt; + __u16 tgt_total_cnt, src_total_cnt, total_in_src; - total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); + src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount); + tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); - if (total_data_size != - get_unaligned_le16(&pSMB2->t2_rsp.TotalDataCount)) - cFYI(1, "total data size of primary and secondary t2 differ"); + if (tgt_total_cnt != src_total_cnt) + cFYI(1, "total data count of primary and secondary t2 differ " + "source=%hu target=%hu", src_total_cnt, tgt_total_cnt); - total_in_buf = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); + total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); - remaining = total_data_size - total_in_buf; + remaining = tgt_total_cnt - total_in_tgt; - if (remaining < 0) + if (remaining < 0) { + cFYI(1, "Server sent too much data. tgt_total_cnt=%hu " + "total_in_tgt=%hu", tgt_total_cnt, total_in_tgt); return -EPROTO; + } - if (remaining == 0) /* nothing to do, ignore */ + if (remaining == 0) { + /* nothing to do, ignore */ + cFYI(1, "no more data remains"); return 0; + } - total_in_buf2 = get_unaligned_le16(&pSMB2->t2_rsp.DataCount); - if (remaining < total_in_buf2) { + total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount); + if (remaining < total_in_src) cFYI(1, "transact2 2nd response contains too much data"); - } /* find end of first SMB data area */ - data_area_of_target = (char *)&pSMBt->hdr.Protocol + + data_area_of_tgt = (char *)&pSMBt->hdr.Protocol + get_unaligned_le16(&pSMBt->t2_rsp.DataOffset); - /* validate target area */ - data_area_of_buf2 = (char *)&pSMB2->hdr.Protocol + - get_unaligned_le16(&pSMB2->t2_rsp.DataOffset); + /* validate target area */ + data_area_of_src = (char *)&pSMBs->hdr.Protocol + + get_unaligned_le16(&pSMBs->t2_rsp.DataOffset); - data_area_of_target += total_in_buf; + data_area_of_tgt += total_in_tgt; - /* copy second buffer into end of first buffer */ - total_in_buf += total_in_buf2; + total_in_tgt += total_in_src; /* is the result too big for the field? */ - if (total_in_buf > USHRT_MAX) + if (total_in_tgt > USHRT_MAX) { + cFYI(1, "coalesced DataCount too large (%u)", total_in_tgt); return -EPROTO; - put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount); + } + put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount); /* fix up the BCC */ byte_count = get_bcc(pTargetSMB); - byte_count += total_in_buf2; + byte_count += total_in_src; /* is the result too big for the field? */ - if (byte_count > USHRT_MAX) + if (byte_count > USHRT_MAX) { + cFYI(1, "coalesced BCC too large (%u)", byte_count); return -EPROTO; + } put_bcc(byte_count, pTargetSMB); byte_count = be32_to_cpu(pTargetSMB->smb_buf_length); - byte_count += total_in_buf2; + byte_count += total_in_src; /* don't allow buffer to overflow */ - if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) + if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { + cFYI(1, "coalesced BCC exceeds buffer size (%u)", byte_count); return -ENOBUFS; + } pTargetSMB->smb_buf_length = cpu_to_be32(byte_count); - memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); + /* copy second buffer into end of first buffer */ + memcpy(data_area_of_tgt, data_area_of_src, total_in_src); - if (remaining == total_in_buf2) { - cFYI(1, "found the last secondary response"); - return 0; /* we are done */ - } else /* more responses to go */ + if (remaining != total_in_src) { + /* more responses to go */ + cFYI(1, "waiting for more secondary responses"); return 1; + } + + /* we are done */ + cFYI(1, "found the last secondary response"); + return 0; } static void @@ -356,12 +373,22 @@ allocate_buffers(struct TCP_Server_Info *server) static bool server_unresponsive(struct TCP_Server_Info *server) { - if (echo_retries > 0 && server->tcpStatus == CifsGood && - time_after(jiffies, server->lstrp + - (echo_retries * SMB_ECHO_INTERVAL))) { + /* + * We need to wait 2 echo intervals to make sure we handle such + * situations right: + * 1s client sends a normal SMB request + * 2s client gets a response + * 30s echo workqueue job pops, and decides we got a response recently + * and don't need to send another + * ... + * 65s kernel_recvmsg times out, and we see that we haven't gotten + * a response in >60s. + */ + if (server->tcpStatus == CifsGood && + time_after(jiffies, server->lstrp + 2 * SMB_ECHO_INTERVAL)) { cERROR(1, "Server %s has not responded in %d seconds. " "Reconnecting...", server->hostname, - (echo_retries * SMB_ECHO_INTERVAL / HZ)); + (2 * SMB_ECHO_INTERVAL) / HZ); cifs_reconnect(server); wake_up(&server->response_q); return true; @@ -625,19 +652,11 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) spin_unlock(&GlobalMid_Lock); wake_up_all(&server->response_q); - /* - * Check if we have blocked requests that need to free. Note that - * cifs_max_pending is normally 50, but can be set at module install - * time to as little as two. - */ - spin_lock(&GlobalMid_Lock); - if (atomic_read(&server->inFlight) >= cifs_max_pending) - atomic_set(&server->inFlight, cifs_max_pending - 1); - /* - * We do not want to set the max_pending too low or we could end up - * with the counter going negative. - */ - spin_unlock(&GlobalMid_Lock); + /* check if we have blocked requests that need to free */ + spin_lock(&server->req_lock); + if (server->credits <= 0) + server->credits = 1; + spin_unlock(&server->req_lock); /* * Although there should not be any requests blocked on this queue it * can not hurt to be paranoid and try to wake up requests that may @@ -756,10 +775,11 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid) cifs_dump_mem("Bad SMB: ", buf, min_t(unsigned int, server->total_read, 48)); - if (mid) - handle_mid(mid, server, smb_buffer, length); + if (!mid) + return length; - return length; + handle_mid(mid, server, smb_buffer, length); + return 0; } static int @@ -1578,11 +1598,14 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, } } - if (vol->multiuser && !(vol->secFlg & CIFSSEC_MAY_KRB5)) { - cERROR(1, "Multiuser mounts currently require krb5 " - "authentication!"); +#ifndef CONFIG_KEYS + /* Muliuser mounts require CONFIG_KEYS support */ + if (vol->multiuser) { + cERROR(1, "Multiuser mounts require kernels with " + "CONFIG_KEYS enabled."); goto cifs_parse_mount_err; } +#endif if (vol->UNCip == NULL) vol->UNCip = &vol->UNC[2]; @@ -1888,7 +1911,8 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses->noblocksnd = volume_info->noblocksnd; tcp_ses->noautotune = volume_info->noautotune; tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay; - atomic_set(&tcp_ses->inFlight, 0); + tcp_ses->in_flight = 0; + tcp_ses->credits = 1; init_waitqueue_head(&tcp_ses->response_q); init_waitqueue_head(&tcp_ses->request_q); INIT_LIST_HEAD(&tcp_ses->pending_mid_q); @@ -1981,10 +2005,16 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol) return 0; break; default: + /* NULL username means anonymous session */ + if (ses->user_name == NULL) { + if (!vol->nullauth) + return 0; + break; + } + /* anything else takes username/password */ - if (ses->user_name == NULL) - return 0; - if (strncmp(ses->user_name, vol->username, + if (strncmp(ses->user_name, + vol->username ? vol->username : "", MAX_USERNAME_SIZE)) return 0; if (strlen(vol->username) != 0 && @@ -2039,6 +2069,132 @@ cifs_put_smb_ses(struct cifs_ses *ses) cifs_put_tcp_session(server); } +#ifdef CONFIG_KEYS + +/* strlen("cifs:a:") + INET6_ADDRSTRLEN + 1 */ +#define CIFSCREDS_DESC_SIZE (7 + INET6_ADDRSTRLEN + 1) + +/* Populate username and pw fields from keyring if possible */ +static int +cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses) +{ + int rc = 0; + char *desc, *delim, *payload; + ssize_t len; + struct key *key; + struct TCP_Server_Info *server = ses->server; + struct sockaddr_in *sa; + struct sockaddr_in6 *sa6; + struct user_key_payload *upayload; + + desc = kmalloc(CIFSCREDS_DESC_SIZE, GFP_KERNEL); + if (!desc) + return -ENOMEM; + + /* try to find an address key first */ + switch (server->dstaddr.ss_family) { + case AF_INET: + sa = (struct sockaddr_in *)&server->dstaddr; + sprintf(desc, "cifs:a:%pI4", &sa->sin_addr.s_addr); + break; + case AF_INET6: + sa6 = (struct sockaddr_in6 *)&server->dstaddr; + sprintf(desc, "cifs:a:%pI6c", &sa6->sin6_addr.s6_addr); + break; + default: + cFYI(1, "Bad ss_family (%hu)", server->dstaddr.ss_family); + rc = -EINVAL; + goto out_err; + } + + cFYI(1, "%s: desc=%s", __func__, desc); + key = request_key(&key_type_logon, desc, ""); + if (IS_ERR(key)) { + if (!ses->domainName) { + cFYI(1, "domainName is NULL"); + rc = PTR_ERR(key); + goto out_err; + } + + /* didn't work, try to find a domain key */ + sprintf(desc, "cifs:d:%s", ses->domainName); + cFYI(1, "%s: desc=%s", __func__, desc); + key = request_key(&key_type_logon, desc, ""); + if (IS_ERR(key)) { + rc = PTR_ERR(key); + goto out_err; + } + } + + down_read(&key->sem); + upayload = key->payload.data; + if (IS_ERR_OR_NULL(upayload)) { + rc = upayload ? PTR_ERR(upayload) : -EINVAL; + goto out_key_put; + } + + /* find first : in payload */ + payload = (char *)upayload->data; + delim = strnchr(payload, upayload->datalen, ':'); + cFYI(1, "payload=%s", payload); + if (!delim) { + cFYI(1, "Unable to find ':' in payload (datalen=%d)", + upayload->datalen); + rc = -EINVAL; + goto out_key_put; + } + + len = delim - payload; + if (len > MAX_USERNAME_SIZE || len <= 0) { + cFYI(1, "Bad value from username search (len=%zd)", len); + rc = -EINVAL; + goto out_key_put; + } + + vol->username = kstrndup(payload, len, GFP_KERNEL); + if (!vol->username) { + cFYI(1, "Unable to allocate %zd bytes for username", len); + rc = -ENOMEM; + goto out_key_put; + } + cFYI(1, "%s: username=%s", __func__, vol->username); + + len = key->datalen - (len + 1); + if (len > MAX_PASSWORD_SIZE || len <= 0) { + cFYI(1, "Bad len for password search (len=%zd)", len); + rc = -EINVAL; + kfree(vol->username); + vol->username = NULL; + goto out_key_put; + } + + ++delim; + vol->password = kstrndup(delim, len, GFP_KERNEL); + if (!vol->password) { + cFYI(1, "Unable to allocate %zd bytes for password", len); + rc = -ENOMEM; + kfree(vol->username); + vol->username = NULL; + goto out_key_put; + } + +out_key_put: + up_read(&key->sem); + key_put(key); +out_err: + kfree(desc); + cFYI(1, "%s: returning %d", __func__, rc); + return rc; +} +#else /* ! CONFIG_KEYS */ +static inline int +cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)), + struct cifs_ses *ses __attribute__((unused))) +{ + return -ENOSYS; +} +#endif /* CONFIG_KEYS */ + static bool warned_on_ntlm; /* globals init to false automatically */ static struct cifs_ses * @@ -2914,18 +3070,33 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, #define CIFS_DEFAULT_IOSIZE (1024 * 1024) /* - * Windows only supports a max of 60k reads. Default to that when posix - * extensions aren't in force. + * Windows only supports a max of 60kb reads and 65535 byte writes. Default to + * those values when posix extensions aren't in force. In actuality here, we + * use 65536 to allow for a write that is a multiple of 4k. Most servers seem + * to be ok with the extra byte even though Windows doesn't send writes that + * are that large. + * + * Citation: + * + * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx */ #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) +#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) static unsigned int cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info) { __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); struct TCP_Server_Info *server = tcon->ses->server; - unsigned int wsize = pvolume_info->wsize ? pvolume_info->wsize : - CIFS_DEFAULT_IOSIZE; + unsigned int wsize; + + /* start with specified wsize, or default */ + if (pvolume_info->wsize) + wsize = pvolume_info->wsize; + else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) + wsize = CIFS_DEFAULT_IOSIZE; + else + wsize = CIFS_DEFAULT_NON_POSIX_WSIZE; /* can server support 24-bit write sizes? (via UNIX extensions) */ if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) @@ -3136,10 +3307,9 @@ cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, return -EINVAL; if (volume_info->nullauth) { - cFYI(1, "null user"); - volume_info->username = kzalloc(1, GFP_KERNEL); - if (volume_info->username == NULL) - return -ENOMEM; + cFYI(1, "Anonymous login"); + kfree(volume_info->username); + volume_info->username = NULL; } else if (volume_info->username) { /* BB fixme parse for domain name here */ cFYI(1, "Username: %s", volume_info->username); @@ -3204,7 +3374,7 @@ cifs_ra_pages(struct cifs_sb_info *cifs_sb) int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info) { - int rc = 0; + int rc; int xid; struct cifs_ses *pSesInfo; struct cifs_tcon *tcon; @@ -3231,6 +3401,7 @@ try_mount_again: FreeXid(xid); } #endif + rc = 0; tcon = NULL; pSesInfo = NULL; srvTcp = NULL; @@ -3478,7 +3649,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, if (ses->capabilities & CAP_UNICODE) { smb_buffer->Flags2 |= SMBFLG2_UNICODE; length = - cifs_strtoUCS((__le16 *) bcc_ptr, tree, + cifs_strtoUTF16((__le16 *) bcc_ptr, tree, 6 /* max utf8 char length in bytes */ * (/* server len*/ + 256 /* share len */), nls_codepage); bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ @@ -3533,7 +3704,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, /* mostly informational -- no need to fail on error here */ kfree(tcon->nativeFileSystem); - tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr, + tcon->nativeFileSystem = cifs_strndup_from_utf16(bcc_ptr, bytes_left, is_unicode, nls_codepage); @@ -3592,9 +3763,11 @@ int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses) if (server->maxBuf != 0) return 0; + cifs_set_credits(server, 1); rc = CIFSSMBNegotiate(xid, ses); if (rc == -EAGAIN) { /* retry only once on 1st time connection */ + cifs_set_credits(server, 1); rc = CIFSSMBNegotiate(xid, ses); if (rc == -EAGAIN) rc = -EHOSTDOWN; @@ -3657,25 +3830,43 @@ int cifs_setup_session(unsigned int xid, struct cifs_ses *ses, return rc; } +static int +cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses) +{ + switch (ses->server->secType) { + case Kerberos: + vol->secFlg = CIFSSEC_MUST_KRB5; + return 0; + case NTLMv2: + vol->secFlg = CIFSSEC_MUST_NTLMV2; + break; + case NTLM: + vol->secFlg = CIFSSEC_MUST_NTLM; + break; + case RawNTLMSSP: + vol->secFlg = CIFSSEC_MUST_NTLMSSP; + break; + case LANMAN: + vol->secFlg = CIFSSEC_MUST_LANMAN; + break; + } + + return cifs_set_cifscreds(vol, ses); +} + static struct cifs_tcon * cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) { + int rc; struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb); struct cifs_ses *ses; struct cifs_tcon *tcon = NULL; struct smb_vol *vol_info; - char username[28]; /* big enough for "krb50x" + hex of ULONG_MAX 6+16 */ - /* We used to have this as MAX_USERNAME which is */ - /* way too big now (256 instead of 32) */ vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL); - if (vol_info == NULL) { - tcon = ERR_PTR(-ENOMEM); - goto out; - } + if (vol_info == NULL) + return ERR_PTR(-ENOMEM); - snprintf(username, sizeof(username), "krb50x%x", fsuid); - vol_info->username = username; vol_info->local_nls = cifs_sb->local_nls; vol_info->linux_uid = fsuid; vol_info->cred_uid = fsuid; @@ -3685,8 +3876,11 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) vol_info->local_lease = master_tcon->local_lease; vol_info->no_linux_ext = !master_tcon->unix_ext; - /* FIXME: allow for other secFlg settings */ - vol_info->secFlg = CIFSSEC_MUST_KRB5; + rc = cifs_set_vol_auth(vol_info, master_tcon->ses); + if (rc) { + tcon = ERR_PTR(rc); + goto out; + } /* get a reference for the same TCP session */ spin_lock(&cifs_tcp_ses_lock); @@ -3709,6 +3903,8 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) if (ses->capabilities & CAP_UNIX) reset_cifs_unix_caps(0, tcon, NULL, vol_info); out: + kfree(vol_info->username); + kfree(vol_info->password); kfree(vol_info); return tcon; diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index df8fecb5b99..d172c8ed901 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -171,7 +171,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode, } tcon = tlink_tcon(tlink); - if (enable_oplocks) + if (tcon->ses->server->oplocks) oplock = REQ_OPLOCK; if (nd) @@ -492,7 +492,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, { int xid; int rc = 0; /* to get around spurious gcc warning, set to zero here */ - __u32 oplock = 0; + __u32 oplock; __u16 fileHandle = 0; bool posix_open = false; struct cifs_sb_info *cifs_sb; @@ -518,6 +518,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, } pTcon = tlink_tcon(tlink); + oplock = pTcon->ses->server->oplocks ? REQ_OPLOCK : 0; + /* * Don't allow the separator character in a path component. * The VFS will not allow "/", but "\" is allowed by posix. @@ -584,10 +586,26 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, * If either that or op not supported returned, follow * the normal lookup. */ - if ((rc == 0) || (rc == -ENOENT)) + switch (rc) { + case 0: + /* + * The server may allow us to open things like + * FIFOs, but the client isn't set up to deal + * with that. If it's not a regular file, just + * close it and proceed as if it were a normal + * lookup. + */ + if (newInode && !S_ISREG(newInode->i_mode)) { + CIFSSMBClose(xid, pTcon, fileHandle); + break; + } + case -ENOENT: posix_open = true; - else if ((rc == -EINVAL) || (rc != -EOPNOTSUPP)) + case -EOPNOTSUPP: + break; + default: pTcon->broken_posix_open = true; + } } if (!posix_open) rc = cifs_get_inode_info_unix(&newInode, full_path, diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 4dd9283885e..159fcc56dc2 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -380,7 +380,7 @@ int cifs_open(struct inode *inode, struct file *file) cFYI(1, "inode = 0x%p file flags are 0x%x for %s", inode, file->f_flags, full_path); - if (enable_oplocks) + if (tcon->ses->server->oplocks) oplock = REQ_OPLOCK; else oplock = 0; @@ -505,7 +505,7 @@ static int cifs_reopen_file(struct cifsFileInfo *pCifsFile, bool can_flush) cFYI(1, "inode = 0x%p file flags 0x%x for %s", inode, pCifsFile->f_flags, full_path); - if (enable_oplocks) + if (tcon->ses->server->oplocks) oplock = REQ_OPLOCK; else oplock = 0; @@ -920,16 +920,26 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile) for (lockp = &inode->i_flock; *lockp != NULL; \ lockp = &(*lockp)->fl_next) +struct lock_to_push { + struct list_head llist; + __u64 offset; + __u64 length; + __u32 pid; + __u16 netfid; + __u8 type; +}; + static int cifs_push_posix_locks(struct cifsFileInfo *cfile) { struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); struct file_lock *flock, **before; - struct cifsLockInfo *lck, *tmp; + unsigned int count = 0, i = 0; int rc = 0, xid, type; + struct list_head locks_to_send, *el; + struct lock_to_push *lck, *tmp; __u64 length; - struct list_head locks_to_send; xid = GetXid(); @@ -940,29 +950,56 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) return rc; } + lock_flocks(); + cifs_for_each_lock(cfile->dentry->d_inode, before) { + if ((*before)->fl_flags & FL_POSIX) + count++; + } + unlock_flocks(); + INIT_LIST_HEAD(&locks_to_send); + /* + * Allocating count locks is enough because no FL_POSIX locks can be + * added to the list while we are holding cinode->lock_mutex that + * protects locking operations of this inode. + */ + for (; i < count; i++) { + lck = kmalloc(sizeof(struct lock_to_push), GFP_KERNEL); + if (!lck) { + rc = -ENOMEM; + goto err_out; + } + list_add_tail(&lck->llist, &locks_to_send); + } + + el = locks_to_send.next; lock_flocks(); cifs_for_each_lock(cfile->dentry->d_inode, before) { flock = *before; + if ((flock->fl_flags & FL_POSIX) == 0) + continue; + if (el == &locks_to_send) { + /* + * The list ended. We don't have enough allocated + * structures - something is really wrong. + */ + cERROR(1, "Can't push all brlocks!"); + break; + } length = 1 + flock->fl_end - flock->fl_start; if (flock->fl_type == F_RDLCK || flock->fl_type == F_SHLCK) type = CIFS_RDLCK; else type = CIFS_WRLCK; - - lck = cifs_lock_init(flock->fl_start, length, type, - cfile->netfid); - if (!lck) { - rc = -ENOMEM; - goto send_locks; - } + lck = list_entry(el, struct lock_to_push, llist); lck->pid = flock->fl_pid; - - list_add_tail(&lck->llist, &locks_to_send); + lck->netfid = cfile->netfid; + lck->length = length; + lck->type = type; + lck->offset = flock->fl_start; + el = el->next; } - -send_locks: unlock_flocks(); list_for_each_entry_safe(lck, tmp, &locks_to_send, llist) { @@ -979,11 +1016,18 @@ send_locks: kfree(lck); } +out: cinode->can_cache_brlcks = false; mutex_unlock(&cinode->lock_mutex); FreeXid(xid); return rc; +err_out: + list_for_each_entry_safe(lck, tmp, &locks_to_send, llist) { + list_del(&lck->llist); + kfree(lck); + } + goto out; } static int diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index a5f54b7d982..745da3d0653 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -534,6 +534,11 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; fattr->cf_dtype = DT_DIR; + /* + * Server can return wrong NumberOfLinks value for directories + * when Unix extensions are disabled - fake it. + */ + fattr->cf_nlink = 2; } else { fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; fattr->cf_dtype = DT_REG; @@ -541,9 +546,9 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, /* clear write bits if ATTR_READONLY is set */ if (fattr->cf_cifsattrs & ATTR_READONLY) fattr->cf_mode &= ~(S_IWUGO); - } - fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); + fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); + } fattr->cf_uid = cifs_sb->mnt_uid; fattr->cf_gid = cifs_sb->mnt_gid; @@ -1322,7 +1327,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) } /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need to set uid/gid */ - inc_nlink(inode); cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb); cifs_fill_uniqueid(inode->i_sb, &fattr); @@ -1355,7 +1359,6 @@ mkdir_retry_old: d_drop(direntry); } else { mkdir_get_info: - inc_nlink(inode); if (pTcon->unix_ext) rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, xid); @@ -1436,6 +1439,11 @@ mkdir_get_info: } } mkdir_out: + /* + * Force revalidate to get parent dir info when needed since cached + * attributes are invalid now. + */ + CIFS_I(inode)->time = 0; kfree(full_path); FreeXid(xid); cifs_put_tlink(tlink); @@ -1475,7 +1483,6 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) cifs_put_tlink(tlink); if (!rc) { - drop_nlink(inode); spin_lock(&direntry->d_inode->i_lock); i_size_write(direntry->d_inode, 0); clear_nlink(direntry->d_inode); @@ -1483,12 +1490,15 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) } cifsInode = CIFS_I(direntry->d_inode); - cifsInode->time = 0; /* force revalidate to go get info when - needed */ + /* force revalidate to go get info when needed */ + cifsInode->time = 0; cifsInode = CIFS_I(inode); - cifsInode->time = 0; /* force revalidate to get parent dir info - since cached search results now invalid */ + /* + * Force revalidate to get parent dir info when needed since cached + * attributes are invalid now. + */ + cifsInode->time = 0; direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 703ef5c6fdb..c273c12de98 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -690,3 +690,22 @@ backup_cred(struct cifs_sb_info *cifs_sb) return false; } + +void +cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add) +{ + spin_lock(&server->req_lock); + server->credits += add; + server->in_flight--; + spin_unlock(&server->req_lock); + wake_up(&server->request_q); +} + +void +cifs_set_credits(struct TCP_Server_Info *server, const int val) +{ + spin_lock(&server->req_lock); + server->credits = val; + server->oplocks = val > 1 ? enable_oplocks : false; + spin_unlock(&server->req_lock); +} diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index a090bbe6ee2..e2bbc683e01 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c @@ -647,10 +647,11 @@ static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir, name.name = scratch_buf; name.len = - cifs_from_ucs2((char *)name.name, (__le16 *)de.name, - UNICODE_NAME_MAX, - min(de.namelen, (size_t)max_len), nlt, - cifs_sb->mnt_cifs_flags & + cifs_from_utf16((char *)name.name, (__le16 *)de.name, + UNICODE_NAME_MAX, + min_t(size_t, de.namelen, + (size_t)max_len), nlt, + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); name.len -= nls_nullsize(nlt); } else { diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 4ec3ee9d72c..551d0c2b973 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -167,16 +167,16 @@ unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp) int bytes_ret = 0; /* Copy OS version */ - bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32, - nls_cp); + bytes_ret = cifs_strtoUTF16((__le16 *)bcc_ptr, "Linux version ", 32, + nls_cp); bcc_ptr += 2 * bytes_ret; - bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release, - 32, nls_cp); + bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, init_utsname()->release, + 32, nls_cp); bcc_ptr += 2 * bytes_ret; bcc_ptr += 2; /* trailing null */ - bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, - 32, nls_cp); + bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, + 32, nls_cp); bcc_ptr += 2 * bytes_ret; bcc_ptr += 2; /* trailing null */ @@ -197,8 +197,8 @@ static void unicode_domain_string(char **pbcc_area, struct cifs_ses *ses, *(bcc_ptr+1) = 0; bytes_ret = 0; } else - bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName, - 256, nls_cp); + bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->domainName, + 256, nls_cp); bcc_ptr += 2 * bytes_ret; bcc_ptr += 2; /* account for null terminator */ @@ -226,8 +226,8 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifs_ses *ses, *bcc_ptr = 0; *(bcc_ptr+1) = 0; } else { - bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->user_name, - MAX_USERNAME_SIZE, nls_cp); + bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->user_name, + MAX_USERNAME_SIZE, nls_cp); } bcc_ptr += 2 * bytes_ret; bcc_ptr += 2; /* account for null termination */ @@ -246,16 +246,15 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifs_ses *ses, /* copy user */ /* BB what about null user mounts - check that we do this BB */ /* copy user */ - if (ses->user_name != NULL) + if (ses->user_name != NULL) { strncpy(bcc_ptr, ses->user_name, MAX_USERNAME_SIZE); + bcc_ptr += strnlen(ses->user_name, MAX_USERNAME_SIZE); + } /* else null user mount */ - - bcc_ptr += strnlen(ses->user_name, MAX_USERNAME_SIZE); *bcc_ptr = 0; bcc_ptr++; /* account for null termination */ /* copy domain */ - if (ses->domainName != NULL) { strncpy(bcc_ptr, ses->domainName, 256); bcc_ptr += strnlen(ses->domainName, 256); @@ -287,7 +286,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses, cFYI(1, "bleft %d", bleft); kfree(ses->serverOS); - ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp); + ses->serverOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp); cFYI(1, "serverOS=%s", ses->serverOS); len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2; data += len; @@ -296,7 +295,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses, return; kfree(ses->serverNOS); - ses->serverNOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp); + ses->serverNOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp); cFYI(1, "serverNOS=%s", ses->serverNOS); len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2; data += len; @@ -305,7 +304,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses, return; kfree(ses->serverDomain); - ses->serverDomain = cifs_strndup_from_ucs(data, bleft, true, nls_cp); + ses->serverDomain = cifs_strndup_from_utf16(data, bleft, true, nls_cp); cFYI(1, "serverDomain=%s", ses->serverDomain); return; @@ -395,6 +394,10 @@ static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, ses->ntlmssp->server_flags = le32_to_cpu(pblob->NegotiateFlags); tioffset = le32_to_cpu(pblob->TargetInfoArray.BufferOffset); tilen = le16_to_cpu(pblob->TargetInfoArray.Length); + if (tioffset > blob_len || tioffset + tilen > blob_len) { + cERROR(1, "tioffset + tilen too high %u + %u", tioffset, tilen); + return -EINVAL; + } if (tilen) { ses->auth_key.response = kmalloc(tilen, GFP_KERNEL); if (!ses->auth_key.response) { @@ -502,8 +505,8 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer, tmp += 2; } else { int len; - len = cifs_strtoUCS((__le16 *)tmp, ses->domainName, - MAX_USERNAME_SIZE, nls_cp); + len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName, + MAX_USERNAME_SIZE, nls_cp); len *= 2; /* unicode is 2 bytes each */ sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); sec_blob->DomainName.Length = cpu_to_le16(len); @@ -518,8 +521,8 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer, tmp += 2; } else { int len; - len = cifs_strtoUCS((__le16 *)tmp, ses->user_name, - MAX_USERNAME_SIZE, nls_cp); + len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name, + MAX_USERNAME_SIZE, nls_cp); len *= 2; /* unicode is 2 bytes each */ sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); sec_blob->UserName.Length = cpu_to_le16(len); diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c index 80d85088193..d5cd9aa7eac 100644 --- a/fs/cifs/smbencrypt.c +++ b/fs/cifs/smbencrypt.c @@ -213,7 +213,7 @@ E_md4hash(const unsigned char *passwd, unsigned char *p16, /* Password cannot be longer than 128 characters */ if (passwd) /* Password must be converted to NT unicode */ - len = cifs_strtoUCS(wpwd, passwd, 128, codepage); + len = cifs_strtoUTF16(wpwd, passwd, 128, codepage); else { len = 0; *wpwd = 0; /* Ensure string is null terminated */ diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 0cc9584f588..310918b6fcb 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -254,44 +254,60 @@ smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer, return smb_sendv(server, &iov, 1); } -static int wait_for_free_request(struct TCP_Server_Info *server, - const int long_op) +static int +wait_for_free_credits(struct TCP_Server_Info *server, const int optype, + int *credits) { - if (long_op == CIFS_ASYNC_OP) { + int rc; + + spin_lock(&server->req_lock); + if (optype == CIFS_ASYNC_OP) { /* oplock breaks must not be held up */ - atomic_inc(&server->inFlight); + server->in_flight++; + *credits -= 1; + spin_unlock(&server->req_lock); return 0; } - spin_lock(&GlobalMid_Lock); while (1) { - if (atomic_read(&server->inFlight) >= cifs_max_pending) { - spin_unlock(&GlobalMid_Lock); + if (*credits <= 0) { + spin_unlock(&server->req_lock); cifs_num_waiters_inc(server); - wait_event(server->request_q, - atomic_read(&server->inFlight) - < cifs_max_pending); + rc = wait_event_killable(server->request_q, + has_credits(server, credits)); cifs_num_waiters_dec(server); - spin_lock(&GlobalMid_Lock); + if (rc) + return rc; + spin_lock(&server->req_lock); } else { if (server->tcpStatus == CifsExiting) { - spin_unlock(&GlobalMid_Lock); + spin_unlock(&server->req_lock); return -ENOENT; } - /* can not count locking commands against total - as they are allowed to block on server */ + /* + * Can not count locking commands against total + * as they are allowed to block on server. + */ /* update # of requests on the wire to server */ - if (long_op != CIFS_BLOCKING_OP) - atomic_inc(&server->inFlight); - spin_unlock(&GlobalMid_Lock); + if (optype != CIFS_BLOCKING_OP) { + *credits -= 1; + server->in_flight++; + } + spin_unlock(&server->req_lock); break; } } return 0; } +static int +wait_for_free_request(struct TCP_Server_Info *server, const int optype) +{ + return wait_for_free_credits(server, optype, get_credits_field(server)); +} + static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf, struct mid_q_entry **ppmidQ) { @@ -359,7 +375,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov, mid = AllocMidQEntry(hdr, server); if (mid == NULL) { mutex_unlock(&server->srv_mutex); - atomic_dec(&server->inFlight); + cifs_add_credits(server, 1); wake_up(&server->request_q); return -ENOMEM; } @@ -392,7 +408,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov, return rc; out_err: delete_mid(mid); - atomic_dec(&server->inFlight); + cifs_add_credits(server, 1); wake_up(&server->request_q); return rc; } @@ -564,8 +580,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, mutex_unlock(&ses->server->srv_mutex); cifs_small_buf_release(in_buf); /* Update # of requests on wire to server */ - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } rc = cifs_sign_smb2(iov, n_vec, ses->server, &midQ->sequence_number); @@ -601,8 +616,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, midQ->callback = DeleteMidQEntry; spin_unlock(&GlobalMid_Lock); cifs_small_buf_release(in_buf); - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } spin_unlock(&GlobalMid_Lock); @@ -612,8 +626,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, rc = cifs_sync_mid_result(midQ, ses->server); if (rc != 0) { - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } @@ -637,8 +650,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, midQ->resp_buf = NULL; out: delete_mid(midQ); - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } @@ -688,8 +700,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, if (rc) { mutex_unlock(&ses->server->srv_mutex); /* Update # of requests on wire to server */ - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } @@ -721,8 +732,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, /* no longer considered to be "in-flight" */ midQ->callback = DeleteMidQEntry; spin_unlock(&GlobalMid_Lock); - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } spin_unlock(&GlobalMid_Lock); @@ -730,8 +740,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, rc = cifs_sync_mid_result(midQ, ses->server); if (rc != 0) { - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } @@ -747,8 +756,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, rc = cifs_check_receive(midQ, ses->server, 0); out: delete_mid(midQ); - atomic_dec(&ses->server->inFlight); - wake_up(&ses->server->request_q); + cifs_add_credits(ses->server, 1); return rc; } diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index 45f07c46f3e..10d92cf57ab 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -105,7 +105,6 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name, struct cifs_tcon *pTcon; struct super_block *sb; char *full_path; - struct cifs_ntsd *pacl; if (direntry == NULL) return -EIO; @@ -164,23 +163,24 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL, strlen(CIFS_XATTR_CIFS_ACL)) == 0) { +#ifdef CONFIG_CIFS_ACL + struct cifs_ntsd *pacl; pacl = kmalloc(value_size, GFP_KERNEL); if (!pacl) { cFYI(1, "%s: Can't allocate memory for ACL", __func__); rc = -ENOMEM; } else { -#ifdef CONFIG_CIFS_ACL memcpy(pacl, ea_value, value_size); rc = set_cifs_acl(pacl, value_size, direntry->d_inode, full_path, CIFS_ACL_DACL); if (rc == 0) /* force revalidate of the inode */ CIFS_I(direntry->d_inode)->time = 0; kfree(pacl); + } #else cFYI(1, "Set CIFS ACL not supported yet"); #endif /* CONFIG_CIFS_ACL */ - } } else { int temp; temp = strncmp(ea_name, POSIX_ACL_XATTR_ACCESS, diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 5e2e1b3f068..05156c17b55 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -208,13 +208,12 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) if (IS_ERR(root)) { error = PTR_ERR(root); printk("Failure of coda_cnode_make for root: error %d\n", error); - root = NULL; goto error; } printk("coda_read_super: rootinode is %ld dev %s\n", root->i_ino, root->i_sb->s_id); - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { error = -EINVAL; goto error; @@ -222,9 +221,6 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) return 0; error: - if (root) - iput(root); - mutex_lock(&vc->vc_mutex); bdi_destroy(&vc->bdi); vc->vc_sb = NULL; diff --git a/fs/compat.c b/fs/compat.c index fa9d721ecfe..14483a715bb 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -33,7 +33,6 @@ #include <linux/nfs4_mount.h> #include <linux/syscalls.h> #include <linux/ctype.h> -#include <linux/module.h> #include <linux/dirent.h> #include <linux/fsnotify.h> #include <linux/highuid.h> @@ -131,41 +130,35 @@ asmlinkage long compat_sys_utimes(const char __user *filename, struct compat_tim static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf) { - compat_ino_t ino = stat->ino; - typeof(ubuf->st_uid) uid = 0; - typeof(ubuf->st_gid) gid = 0; - int err; + struct compat_stat tmp; - SET_UID(uid, stat->uid); - SET_GID(gid, stat->gid); + if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev)) + return -EOVERFLOW; - if ((u64) stat->size > MAX_NON_LFS || - !old_valid_dev(stat->dev) || - !old_valid_dev(stat->rdev)) + memset(&tmp, 0, sizeof(tmp)); + tmp.st_dev = old_encode_dev(stat->dev); + tmp.st_ino = stat->ino; + if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) return -EOVERFLOW; - if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino) + tmp.st_mode = stat->mode; + tmp.st_nlink = stat->nlink; + if (tmp.st_nlink != stat->nlink) return -EOVERFLOW; - - if (clear_user(ubuf, sizeof(*ubuf))) - return -EFAULT; - - err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev); - err |= __put_user(ino, &ubuf->st_ino); - err |= __put_user(stat->mode, &ubuf->st_mode); - err |= __put_user(stat->nlink, &ubuf->st_nlink); - err |= __put_user(uid, &ubuf->st_uid); - err |= __put_user(gid, &ubuf->st_gid); - err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev); - err |= __put_user(stat->size, &ubuf->st_size); - err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime); - err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec); - err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime); - err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec); - err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime); - err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec); - err |= __put_user(stat->blksize, &ubuf->st_blksize); - err |= __put_user(stat->blocks, &ubuf->st_blocks); - return err; + SET_UID(tmp.st_uid, stat->uid); + SET_GID(tmp.st_gid, stat->gid); + tmp.st_rdev = old_encode_dev(stat->rdev); + if ((u64) stat->size > MAX_NON_LFS) + return -EOVERFLOW; + tmp.st_size = stat->size; + tmp.st_atime = stat->atime.tv_sec; + tmp.st_atime_nsec = stat->atime.tv_nsec; + tmp.st_mtime = stat->mtime.tv_sec; + tmp.st_mtime_nsec = stat->mtime.tv_nsec; + tmp.st_ctime = stat->ctime.tv_sec; + tmp.st_ctime_nsec = stat->ctime.tv_nsec; + tmp.st_blocks = stat->blocks; + tmp.st_blksize = stat->blksize; + return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0; } asmlinkage long compat_sys_newstat(const char __user * filename, diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index a26bea10e81..debdfe0fc80 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -34,7 +34,7 @@ #include <linux/fs.h> #include <linux/file.h> #include <linux/ppp_defs.h> -#include <linux/if_ppp.h> +#include <linux/ppp-ioctl.h> #include <linux/if_pppox.h> #include <linux/mtio.h> #include <linux/auto_fs.h> @@ -49,7 +49,6 @@ #include <linux/elevator.h> #include <linux/rtc.h> #include <linux/pci.h> -#include <linux/module.h> #include <linux/serial.h> #include <linux/if_tun.h> #include <linux/ctype.h> diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index ede857d20a0..b5f0a3b91f1 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -58,12 +58,11 @@ struct configfs_dirent { extern struct mutex configfs_symlink_mutex; extern spinlock_t configfs_dirent_lock; -extern struct vfsmount * configfs_mount; extern struct kmem_cache *configfs_dir_cachep; extern int configfs_is_root(struct config_item *item); -extern struct inode * configfs_new_inode(umode_t mode, struct configfs_dirent *); +extern struct inode * configfs_new_inode(umode_t mode, struct configfs_dirent *, struct super_block *); extern int configfs_create(struct dentry *, umode_t mode, int (*init)(struct inode *)); extern int configfs_inode_init(void); extern void configfs_inode_exit(void); @@ -80,15 +79,15 @@ extern const unsigned char * configfs_get_name(struct configfs_dirent *sd); extern void configfs_drop_dentry(struct configfs_dirent *sd, struct dentry *parent); extern int configfs_setattr(struct dentry *dentry, struct iattr *iattr); -extern int configfs_pin_fs(void); +extern struct dentry *configfs_pin_fs(void); extern void configfs_release_fs(void); extern struct rw_semaphore configfs_rename_sem; -extern struct super_block * configfs_sb; extern const struct file_operations configfs_dir_operations; extern const struct file_operations configfs_file_operations; extern const struct file_operations bin_fops; extern const struct inode_operations configfs_dir_inode_operations; +extern const struct inode_operations configfs_root_inode_operations; extern const struct inode_operations configfs_symlink_inode_operations; extern const struct dentry_operations configfs_dentry_ops; diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 5ddd7ebd9dc..7e6c52d8a20 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -264,11 +264,13 @@ static int init_symlink(struct inode * inode) return 0; } -static int create_dir(struct config_item * k, struct dentry * p, - struct dentry * d) +static int create_dir(struct config_item *k, struct dentry *d) { int error; umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO; + struct dentry *p = d->d_parent; + + BUG_ON(!k); error = configfs_dirent_exists(p->d_fsdata, d->d_name.name); if (!error) @@ -304,19 +306,7 @@ static int create_dir(struct config_item * k, struct dentry * p, static int configfs_create_dir(struct config_item * item, struct dentry *dentry) { - struct dentry * parent; - int error = 0; - - BUG_ON(!item); - - if (item->ci_parent) - parent = item->ci_parent->ci_dentry; - else if (configfs_mount) - parent = configfs_mount->mnt_root; - else - return -EFAULT; - - error = create_dir(item,parent,dentry); + int error = create_dir(item, dentry); if (!error) item->ci_dentry = dentry; return error; @@ -1079,23 +1069,24 @@ int configfs_depend_item(struct configfs_subsystem *subsys, int ret; struct configfs_dirent *p, *root_sd, *subsys_sd = NULL; struct config_item *s_item = &subsys->su_group.cg_item; + struct dentry *root; /* * Pin the configfs filesystem. This means we can safely access * the root of the configfs filesystem. */ - ret = configfs_pin_fs(); - if (ret) - return ret; + root = configfs_pin_fs(); + if (IS_ERR(root)) + return PTR_ERR(root); /* * Next, lock the root directory. We're going to check that the * subsystem is really registered, and so we need to lock out * configfs_[un]register_subsystem(). */ - mutex_lock(&configfs_sb->s_root->d_inode->i_mutex); + mutex_lock(&root->d_inode->i_mutex); - root_sd = configfs_sb->s_root->d_fsdata; + root_sd = root->d_fsdata; list_for_each_entry(p, &root_sd->s_children, s_sibling) { if (p->s_type & CONFIGFS_DIR) { @@ -1129,7 +1120,7 @@ int configfs_depend_item(struct configfs_subsystem *subsys, out_unlock_dirent_lock: spin_unlock(&configfs_dirent_lock); out_unlock_fs: - mutex_unlock(&configfs_sb->s_root->d_inode->i_mutex); + mutex_unlock(&root->d_inode->i_mutex); /* * If we succeeded, the fs is pinned via other methods. If not, @@ -1183,11 +1174,6 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode struct module *subsys_owner = NULL, *new_item_owner = NULL; char *name; - if (dentry->d_parent == configfs_sb->s_root) { - ret = -EPERM; - goto out; - } - sd = dentry->d_parent->d_fsdata; /* @@ -1359,9 +1345,6 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry) struct module *subsys_owner = NULL, *dead_item_owner = NULL; int ret; - if (dentry->d_parent == configfs_sb->s_root) - return -EPERM; - sd = dentry->d_fsdata; if (sd->s_type & CONFIGFS_USET_DEFAULT) return -EPERM; @@ -1459,6 +1442,11 @@ const struct inode_operations configfs_dir_inode_operations = { .setattr = configfs_setattr, }; +const struct inode_operations configfs_root_inode_operations = { + .lookup = configfs_lookup, + .setattr = configfs_setattr, +}; + #if 0 int configfs_rename_dir(struct config_item * item, const char *new_name) { @@ -1546,6 +1534,7 @@ static inline unsigned char dt_type(struct configfs_dirent *sd) static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir) { struct dentry *dentry = filp->f_path.dentry; + struct super_block *sb = dentry->d_sb; struct configfs_dirent * parent_sd = dentry->d_fsdata; struct configfs_dirent *cursor = filp->private_data; struct list_head *p, *q = &cursor->s_sibling; @@ -1608,7 +1597,7 @@ static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir ino = inode->i_ino; spin_unlock(&configfs_dirent_lock); if (!inode) - ino = iunique(configfs_sb, 2); + ino = iunique(sb, 2); if (filldir(dirent, name, len, filp->f_pos, ino, dt_type(next)) < 0) @@ -1680,27 +1669,27 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys) struct config_group *group = &subsys->su_group; struct qstr name; struct dentry *dentry; + struct dentry *root; struct configfs_dirent *sd; - err = configfs_pin_fs(); - if (err) - return err; + root = configfs_pin_fs(); + if (IS_ERR(root)) + return PTR_ERR(root); if (!group->cg_item.ci_name) group->cg_item.ci_name = group->cg_item.ci_namebuf; - sd = configfs_sb->s_root->d_fsdata; + sd = root->d_fsdata; link_group(to_config_group(sd->s_element), group); - mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex, - I_MUTEX_PARENT); + mutex_lock_nested(&root->d_inode->i_mutex, I_MUTEX_PARENT); name.name = group->cg_item.ci_name; name.len = strlen(name.name); name.hash = full_name_hash(name.name, name.len); err = -ENOMEM; - dentry = d_alloc(configfs_sb->s_root, &name); + dentry = d_alloc(root, &name); if (dentry) { d_add(dentry, NULL); @@ -1717,7 +1706,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys) } } - mutex_unlock(&configfs_sb->s_root->d_inode->i_mutex); + mutex_unlock(&root->d_inode->i_mutex); if (err) { unlink_group(group); @@ -1731,13 +1720,14 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys) { struct config_group *group = &subsys->su_group; struct dentry *dentry = group->cg_item.ci_dentry; + struct dentry *root = dentry->d_sb->s_root; - if (dentry->d_parent != configfs_sb->s_root) { + if (dentry->d_parent != root) { printk(KERN_ERR "configfs: Tried to unregister non-subsystem!\n"); return; } - mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex, + mutex_lock_nested(&root->d_inode->i_mutex, I_MUTEX_PARENT); mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD); mutex_lock(&configfs_symlink_mutex); @@ -1754,7 +1744,7 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys) d_delete(dentry); - mutex_unlock(&configfs_sb->s_root->d_inode->i_mutex); + mutex_unlock(&root->d_inode->i_mutex); dput(dentry); diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index 3ee36d41886..0074362d9f7 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -44,8 +44,6 @@ static struct lock_class_key default_group_class[MAX_LOCK_DEPTH]; #endif -extern struct super_block * configfs_sb; - static const struct address_space_operations configfs_aops = { .readpage = simple_readpage, .write_begin = simple_write_begin, @@ -132,9 +130,10 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr) inode->i_ctime = iattr->ia_ctime; } -struct inode *configfs_new_inode(umode_t mode, struct configfs_dirent * sd) +struct inode *configfs_new_inode(umode_t mode, struct configfs_dirent *sd, + struct super_block *s) { - struct inode * inode = new_inode(configfs_sb); + struct inode * inode = new_inode(s); if (inode) { inode->i_ino = get_next_ino(); inode->i_mapping->a_ops = &configfs_aops; @@ -188,36 +187,35 @@ static void configfs_set_inode_lock_class(struct configfs_dirent *sd, int configfs_create(struct dentry * dentry, umode_t mode, int (*init)(struct inode *)) { int error = 0; - struct inode * inode = NULL; - if (dentry) { - if (!dentry->d_inode) { - struct configfs_dirent *sd = dentry->d_fsdata; - if ((inode = configfs_new_inode(mode, sd))) { - if (dentry->d_parent && dentry->d_parent->d_inode) { - struct inode *p_inode = dentry->d_parent->d_inode; - p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME; - } - configfs_set_inode_lock_class(sd, inode); - goto Proceed; - } - else - error = -ENOMEM; - } else - error = -EEXIST; - } else - error = -ENOENT; - goto Done; + struct inode *inode = NULL; + struct configfs_dirent *sd; + struct inode *p_inode; + + if (!dentry) + return -ENOENT; + + if (dentry->d_inode) + return -EEXIST; - Proceed: - if (init) + sd = dentry->d_fsdata; + inode = configfs_new_inode(mode, sd, dentry->d_sb); + if (!inode) + return -ENOMEM; + + p_inode = dentry->d_parent->d_inode; + p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME; + configfs_set_inode_lock_class(sd, inode); + + if (init) { error = init(inode); - if (!error) { - d_instantiate(dentry, inode); - if (S_ISDIR(mode) || S_ISLNK(mode)) - dget(dentry); /* pin link and directory dentries in core */ - } else - iput(inode); - Done: + if (error) { + iput(inode); + return error; + } + } + d_instantiate(dentry, inode); + if (S_ISDIR(mode) || S_ISLNK(mode)) + dget(dentry); /* pin link and directory dentries in core */ return error; } diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index 276e15cafd5..aee0a7ebbd8 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -37,8 +37,7 @@ /* Random magic number */ #define CONFIGFS_MAGIC 0x62656570 -struct vfsmount * configfs_mount = NULL; -struct super_block * configfs_sb = NULL; +static struct vfsmount *configfs_mount = NULL; struct kmem_cache *configfs_dir_cachep; static int configfs_mnt_count = 0; @@ -77,12 +76,11 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_magic = CONFIGFS_MAGIC; sb->s_op = &configfs_ops; sb->s_time_gran = 1; - configfs_sb = sb; inode = configfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, - &configfs_root); + &configfs_root, sb); if (inode) { - inode->i_op = &configfs_dir_inode_operations; + inode->i_op = &configfs_root_inode_operations; inode->i_fop = &configfs_dir_operations; /* directory inodes start off with i_nlink == 2 (for "." entry) */ inc_nlink(inode); @@ -91,10 +89,9 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; } - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { pr_debug("%s: could not get root dentry!\n",__func__); - iput(inode); return -ENOMEM; } config_group_init(&configfs_root_group); @@ -118,10 +115,11 @@ static struct file_system_type configfs_fs_type = { .kill_sb = kill_litter_super, }; -int configfs_pin_fs(void) +struct dentry *configfs_pin_fs(void) { - return simple_pin_fs(&configfs_fs_type, &configfs_mount, + int err = simple_pin_fs(&configfs_fs_type, &configfs_mount, &configfs_mnt_count); + return err ? ERR_PTR(err) : configfs_mount->mnt_root; } void configfs_release_fs(void) diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c index 0f3eb41d920..cc9f2546ea4 100644 --- a/fs/configfs/symlink.c +++ b/fs/configfs/symlink.c @@ -110,13 +110,13 @@ out: static int get_target(const char *symname, struct path *path, - struct config_item **target) + struct config_item **target, struct super_block *sb) { int ret; ret = kern_path(symname, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, path); if (!ret) { - if (path->dentry->d_sb == configfs_sb) { + if (path->dentry->d_sb == sb) { *target = configfs_get_config_item(path->dentry); if (!*target) { ret = -ENOENT; @@ -141,10 +141,6 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna struct config_item *target_item = NULL; struct config_item_type *type; - ret = -EPERM; /* What lack-of-symlink returns */ - if (dentry->d_parent == configfs_sb->s_root) - goto out; - sd = dentry->d_parent->d_fsdata; /* * Fake invisibility if dir belongs to a group/default groups hierarchy @@ -162,7 +158,7 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna !type->ct_item_ops->allow_link) goto out_put; - ret = get_target(symname, &path, &target_item); + ret = get_target(symname, &path, &target_item, dentry->d_sb); if (ret) goto out_put; @@ -198,8 +194,6 @@ int configfs_unlink(struct inode *dir, struct dentry *dentry) if (!(sd->s_type & CONFIGFS_ITEM_LINK)) goto out; - BUG_ON(dentry->d_parent == configfs_sb->s_root); - sl = sd->s_element; parent_item = configfs_get_config_item(dentry->d_parent); diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index a2ee8f9f5a3..d013c46402e 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -257,10 +257,10 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) /* Do sanity checks on the superblock */ if (super.magic != CRAMFS_MAGIC) { - /* check for wrong endianess */ + /* check for wrong endianness */ if (super.magic == CRAMFS_MAGIC_WEND) { if (!silent) - printk(KERN_ERR "cramfs: wrong endianess\n"); + printk(KERN_ERR "cramfs: wrong endianness\n"); goto out; } @@ -270,7 +270,7 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) mutex_unlock(&read_mutex); if (super.magic != CRAMFS_MAGIC) { if (super.magic == CRAMFS_MAGIC_WEND && !silent) - printk(KERN_ERR "cramfs: wrong endianess\n"); + printk(KERN_ERR "cramfs: wrong endianness\n"); else if (!silent) printk(KERN_ERR "cramfs: wrong magic\n"); goto out; @@ -318,11 +318,9 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) root = get_cramfs_inode(sb, &super.root, 0); if (IS_ERR(root)) goto out; - sb->s_root = d_alloc_root(root); - if (!sb->s_root) { - iput(root); + sb->s_root = d_make_root(root); + if (!sb->s_root) goto out; - } return 0; out: kfree(sbi); diff --git a/fs/dcache.c b/fs/dcache.c index 16a53cc2cc0..b60ddc41d78 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -23,7 +23,7 @@ #include <linux/init.h> #include <linux/hash.h> #include <linux/cache.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/mount.h> #include <linux/file.h> #include <asm/uaccess.h> @@ -104,11 +104,11 @@ static unsigned int d_hash_shift __read_mostly; static struct hlist_bl_head *dentry_hashtable __read_mostly; -static inline struct hlist_bl_head *d_hash(struct dentry *parent, - unsigned long hash) +static inline struct hlist_bl_head *d_hash(const struct dentry *parent, + unsigned int hash) { - hash += ((unsigned long) parent ^ GOLDEN_RATIO_PRIME) / L1_CACHE_BYTES; - hash = hash ^ ((hash ^ GOLDEN_RATIO_PRIME) >> D_HASHBITS); + hash += (unsigned long) parent / L1_CACHE_BYTES; + hash = hash + (hash >> D_HASHBITS); return dentry_hashtable + (hash & D_HASHMASK); } @@ -137,6 +137,49 @@ int proc_nr_dentry(ctl_table *table, int write, void __user *buffer, } #endif +/* + * Compare 2 name strings, return 0 if they match, otherwise non-zero. + * The strings are both count bytes long, and count is non-zero. + */ +static inline int dentry_cmp(const unsigned char *cs, size_t scount, + const unsigned char *ct, size_t tcount) +{ +#ifdef CONFIG_DCACHE_WORD_ACCESS + unsigned long a,b,mask; + + if (unlikely(scount != tcount)) + return 1; + + for (;;) { + a = *(unsigned long *)cs; + b = *(unsigned long *)ct; + if (tcount < sizeof(unsigned long)) + break; + if (unlikely(a != b)) + return 1; + cs += sizeof(unsigned long); + ct += sizeof(unsigned long); + tcount -= sizeof(unsigned long); + if (!tcount) + return 0; + } + mask = ~(~0ul << tcount*8); + return unlikely(!!((a ^ b) & mask)); +#else + if (scount != tcount) + return 1; + + do { + if (*cs != *ct) + return 1; + cs++; + ct++; + tcount--; + } while (tcount); + return 0; +#endif +} + static void __d_free(struct rcu_head *head) { struct dentry *dentry = container_of(head, struct dentry, d_u.d_rcu); @@ -1423,30 +1466,6 @@ struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode) EXPORT_SYMBOL(d_instantiate_unique); -/** - * d_alloc_root - allocate root dentry - * @root_inode: inode to allocate the root for - * - * Allocate a root ("/") dentry for the inode given. The inode is - * instantiated and returned. %NULL is returned if there is insufficient - * memory or the inode passed is %NULL. - */ - -struct dentry * d_alloc_root(struct inode * root_inode) -{ - struct dentry *res = NULL; - - if (root_inode) { - static const struct qstr name = { .name = "/", .len = 1 }; - - res = __d_alloc(root_inode->i_sb, &name); - if (res) - d_instantiate(res, root_inode); - } - return res; -} -EXPORT_SYMBOL(d_alloc_root); - struct dentry *d_make_root(struct inode *root_inode) { struct dentry *res = NULL; @@ -1694,7 +1713,7 @@ EXPORT_SYMBOL(d_add_ci); * __d_lookup_rcu - search for a dentry (racy, store-free) * @parent: parent dentry * @name: qstr of name we wish to find - * @seq: returns d_seq value at the point where the dentry was found + * @seqp: returns d_seq value at the point where the dentry was found * @inode: returns dentry->d_inode when the inode was found valid. * Returns: dentry, or NULL * @@ -1717,8 +1736,9 @@ EXPORT_SYMBOL(d_add_ci); * child is looked up. Thus, an interlocking stepping of sequence lock checks * is formed, giving integrity down the path walk. */ -struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, - unsigned *seq, struct inode **inode) +struct dentry *__d_lookup_rcu(const struct dentry *parent, + const struct qstr *name, + unsigned *seqp, struct inode **inode) { unsigned int len = name->len; unsigned int hash = name->hash; @@ -1748,6 +1768,7 @@ struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, * See Documentation/filesystems/path-lookup.txt for more details. */ hlist_bl_for_each_entry_rcu(dentry, node, b, d_hash) { + unsigned seq; struct inode *i; const char *tname; int tlen; @@ -1756,7 +1777,7 @@ struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, continue; seqretry: - *seq = read_seqcount_begin(&dentry->d_seq); + seq = read_seqcount_begin(&dentry->d_seq); if (dentry->d_parent != parent) continue; if (d_unhashed(dentry)) @@ -1771,7 +1792,7 @@ seqretry: * edge of memory when walking. If we could load this * atomically some other way, we could drop this check. */ - if (read_seqcount_retry(&dentry->d_seq, *seq)) + if (read_seqcount_retry(&dentry->d_seq, seq)) goto seqretry; if (unlikely(parent->d_flags & DCACHE_OP_COMPARE)) { if (parent->d_op->d_compare(parent, *inode, @@ -1788,6 +1809,7 @@ seqretry: * order to do anything useful with the returned dentry * anyway. */ + *seqp = seq; *inode = i; return dentry; } @@ -2382,6 +2404,7 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) if (d_ancestor(alias, dentry)) { /* Check for loops */ actual = ERR_PTR(-ELOOP); + spin_unlock(&inode->i_lock); } else if (IS_ROOT(alias)) { /* Is this an anonymous mountpoint that we * could splice into our tree? */ @@ -2391,7 +2414,7 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) goto found; } else { /* Nope, but we must(!) avoid directory - * aliasing */ + * aliasing. This drops inode->i_lock */ actual = __d_unalias(inode, dentry, alias); } write_sequnlock(&rename_lock); @@ -2968,7 +2991,7 @@ __setup("dhash_entries=", set_dhash_entries); static void __init dcache_init_early(void) { - int loop; + unsigned int loop; /* If hashes are distributed across NUMA nodes, defer * hash allocation until vmalloc space is available. @@ -2986,13 +3009,13 @@ static void __init dcache_init_early(void) &d_hash_mask, 0); - for (loop = 0; loop < (1 << d_hash_shift); loop++) + for (loop = 0; loop < (1U << d_hash_shift); loop++) INIT_HLIST_BL_HEAD(dentry_hashtable + loop); } static void __init dcache_init(void) { - int loop; + unsigned int loop; /* * A constructor could be added for stable state like the lists, @@ -3016,7 +3039,7 @@ static void __init dcache_init(void) &d_hash_mask, 0); - for (loop = 0; loop < (1 << d_hash_shift); loop++) + for (loop = 0; loop < (1U << d_hash_shift); loop++) INIT_HLIST_BL_HEAD(dentry_hashtable + loop); } diff --git a/fs/dcookies.c b/fs/dcookies.c index dda0dc702d1..17c77996782 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -13,7 +13,7 @@ */ #include <linux/syscalls.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/slab.h> #include <linux/list.h> #include <linux/mount.h> diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index f65d4455c5e..21e93605161 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -540,7 +540,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_blob); * debugfs_print_regs32 - use seq_print to describe a set of registers * @s: the seq_file structure being used to generate output * @regs: an array if struct debugfs_reg32 structures - * @mregs: the length of the above array + * @nregs: the length of the above array * @base: the base address to be used in reading the registers * @prefix: a string to be prefixed to every output line * @@ -611,7 +611,7 @@ static const struct file_operations fops_regset32 = { * %NULL or !%NULL instead as to eliminate the need for #ifdef in the calling * code. */ -struct dentry *debugfs_create_regset32(const char *name, mode_t mode, +struct dentry *debugfs_create_regset32(const char *name, umode_t mode, struct dentry *parent, struct debugfs_regset32 *regset) { diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 956d5ddddf6..b80bc846a15 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -23,9 +23,13 @@ #include <linux/debugfs.h> #include <linux/fsnotify.h> #include <linux/string.h> +#include <linux/seq_file.h> +#include <linux/parser.h> #include <linux/magic.h> #include <linux/slab.h> +#define DEBUGFS_DEFAULT_MODE 0755 + static struct vfsmount *debugfs_mount; static int debugfs_mount_count; static bool debugfs_registered; @@ -125,11 +129,154 @@ static inline int debugfs_positive(struct dentry *dentry) return dentry->d_inode && !d_unhashed(dentry); } +struct debugfs_mount_opts { + uid_t uid; + gid_t gid; + umode_t mode; +}; + +enum { + Opt_uid, + Opt_gid, + Opt_mode, + Opt_err +}; + +static const match_table_t tokens = { + {Opt_uid, "uid=%u"}, + {Opt_gid, "gid=%u"}, + {Opt_mode, "mode=%o"}, + {Opt_err, NULL} +}; + +struct debugfs_fs_info { + struct debugfs_mount_opts mount_opts; +}; + +static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts) +{ + substring_t args[MAX_OPT_ARGS]; + int option; + int token; + char *p; + + opts->mode = DEBUGFS_DEFAULT_MODE; + + while ((p = strsep(&data, ",")) != NULL) { + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_uid: + if (match_int(&args[0], &option)) + return -EINVAL; + opts->uid = option; + break; + case Opt_gid: + if (match_octal(&args[0], &option)) + return -EINVAL; + opts->gid = option; + break; + case Opt_mode: + if (match_octal(&args[0], &option)) + return -EINVAL; + opts->mode = option & S_IALLUGO; + break; + /* + * We might like to report bad mount options here; + * but traditionally debugfs has ignored all mount options + */ + } + } + + return 0; +} + +static int debugfs_apply_options(struct super_block *sb) +{ + struct debugfs_fs_info *fsi = sb->s_fs_info; + struct inode *inode = sb->s_root->d_inode; + struct debugfs_mount_opts *opts = &fsi->mount_opts; + + inode->i_mode &= ~S_IALLUGO; + inode->i_mode |= opts->mode; + + inode->i_uid = opts->uid; + inode->i_gid = opts->gid; + + return 0; +} + +static int debugfs_remount(struct super_block *sb, int *flags, char *data) +{ + int err; + struct debugfs_fs_info *fsi = sb->s_fs_info; + + err = debugfs_parse_options(data, &fsi->mount_opts); + if (err) + goto fail; + + debugfs_apply_options(sb); + +fail: + return err; +} + +static int debugfs_show_options(struct seq_file *m, struct dentry *root) +{ + struct debugfs_fs_info *fsi = root->d_sb->s_fs_info; + struct debugfs_mount_opts *opts = &fsi->mount_opts; + + if (opts->uid != 0) + seq_printf(m, ",uid=%u", opts->uid); + if (opts->gid != 0) + seq_printf(m, ",gid=%u", opts->gid); + if (opts->mode != DEBUGFS_DEFAULT_MODE) + seq_printf(m, ",mode=%o", opts->mode); + + return 0; +} + +static const struct super_operations debugfs_super_operations = { + .statfs = simple_statfs, + .remount_fs = debugfs_remount, + .show_options = debugfs_show_options, +}; + static int debug_fill_super(struct super_block *sb, void *data, int silent) { static struct tree_descr debug_files[] = {{""}}; + struct debugfs_fs_info *fsi; + int err; + + save_mount_options(sb, data); + + fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL); + sb->s_fs_info = fsi; + if (!fsi) { + err = -ENOMEM; + goto fail; + } + + err = debugfs_parse_options(data, &fsi->mount_opts); + if (err) + goto fail; + + err = simple_fill_super(sb, DEBUGFS_MAGIC, debug_files); + if (err) + goto fail; + + sb->s_op = &debugfs_super_operations; + + debugfs_apply_options(sb); + + return 0; - return simple_fill_super(sb, DEBUGFS_MAGIC, debug_files); +fail: + kfree(fsi); + sb->s_fs_info = NULL; + return err; } static struct dentry *debug_mount(struct file_system_type *fs_type, diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index c4e2a58a2e8..10f5e0b484d 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -36,7 +36,61 @@ #define DEVPTS_DEFAULT_PTMX_MODE 0000 #define PTMX_MINOR 2 -extern int pty_limit; /* Config limit on Unix98 ptys */ +/* + * sysctl support for setting limits on the number of Unix98 ptys allocated. + * Otherwise one can eat up all kernel memory by opening /dev/ptmx repeatedly. + */ +static int pty_limit = NR_UNIX98_PTY_DEFAULT; +static int pty_reserve = NR_UNIX98_PTY_RESERVE; +static int pty_limit_min; +static int pty_limit_max = INT_MAX; +static int pty_count; + +static struct ctl_table pty_table[] = { + { + .procname = "max", + .maxlen = sizeof(int), + .mode = 0644, + .data = &pty_limit, + .proc_handler = proc_dointvec_minmax, + .extra1 = &pty_limit_min, + .extra2 = &pty_limit_max, + }, { + .procname = "reserve", + .maxlen = sizeof(int), + .mode = 0644, + .data = &pty_reserve, + .proc_handler = proc_dointvec_minmax, + .extra1 = &pty_limit_min, + .extra2 = &pty_limit_max, + }, { + .procname = "nr", + .maxlen = sizeof(int), + .mode = 0444, + .data = &pty_count, + .proc_handler = proc_dointvec, + }, + {} +}; + +static struct ctl_table pty_kern_table[] = { + { + .procname = "pty", + .mode = 0555, + .child = pty_table, + }, + {} +}; + +static struct ctl_table pty_root_table[] = { + { + .procname = "kernel", + .mode = 0555, + .child = pty_kern_table, + }, + {} +}; + static DEFINE_MUTEX(allocated_ptys_lock); static struct vfsmount *devpts_mnt; @@ -49,10 +103,11 @@ struct pts_mount_opts { umode_t mode; umode_t ptmxmode; int newinstance; + int max; }; enum { - Opt_uid, Opt_gid, Opt_mode, Opt_ptmxmode, Opt_newinstance, + Opt_uid, Opt_gid, Opt_mode, Opt_ptmxmode, Opt_newinstance, Opt_max, Opt_err }; @@ -63,6 +118,7 @@ static const match_table_t tokens = { #ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES {Opt_ptmxmode, "ptmxmode=%o"}, {Opt_newinstance, "newinstance"}, + {Opt_max, "max=%d"}, #endif {Opt_err, NULL} }; @@ -109,6 +165,7 @@ static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts) opts->gid = 0; opts->mode = DEVPTS_DEFAULT_MODE; opts->ptmxmode = DEVPTS_DEFAULT_PTMX_MODE; + opts->max = NR_UNIX98_PTY_MAX; /* newinstance makes sense only on initial mount */ if (op == PARSE_MOUNT) @@ -152,6 +209,12 @@ static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts) if (op == PARSE_MOUNT) opts->newinstance = 1; break; + case Opt_max: + if (match_int(&args[0], &option) || + option < 0 || option > NR_UNIX98_PTY_MAX) + return -EINVAL; + opts->max = option; + break; #endif default: printk(KERN_ERR "devpts: called with bogus options\n"); @@ -258,6 +321,8 @@ static int devpts_show_options(struct seq_file *seq, struct dentry *root) seq_printf(seq, ",mode=%03o", opts->mode); #ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES seq_printf(seq, ",ptmxmode=%03o", opts->ptmxmode); + if (opts->max < NR_UNIX98_PTY_MAX) + seq_printf(seq, ",max=%d", opts->max); #endif return 0; @@ -309,12 +374,11 @@ devpts_fill_super(struct super_block *s, void *data, int silent) inode->i_fop = &simple_dir_operations; set_nlink(inode, 2); - s->s_root = d_alloc_root(inode); + s->s_root = d_make_root(inode); if (s->s_root) return 0; printk(KERN_ERR "devpts: get root dentry failed\n"); - iput(inode); fail: return -ENOMEM; @@ -438,6 +502,12 @@ retry: return -ENOMEM; mutex_lock(&allocated_ptys_lock); + if (pty_count >= pty_limit - + (fsi->mount_opts.newinstance ? pty_reserve : 0)) { + mutex_unlock(&allocated_ptys_lock); + return -ENOSPC; + } + ida_ret = ida_get_new(&fsi->allocated_ptys, &index); if (ida_ret < 0) { mutex_unlock(&allocated_ptys_lock); @@ -446,11 +516,12 @@ retry: return -EIO; } - if (index >= pty_limit) { + if (index >= fsi->mount_opts.max) { ida_remove(&fsi->allocated_ptys, index); mutex_unlock(&allocated_ptys_lock); - return -EIO; + return -ENOSPC; } + pty_count++; mutex_unlock(&allocated_ptys_lock); return index; } @@ -462,6 +533,7 @@ void devpts_kill_index(struct inode *ptmx_inode, int idx) mutex_lock(&allocated_ptys_lock); ida_remove(&fsi->allocated_ptys, idx); + pty_count--; mutex_unlock(&allocated_ptys_lock); } @@ -558,11 +630,15 @@ void devpts_pty_kill(struct tty_struct *tty) static int __init init_devpts_fs(void) { int err = register_filesystem(&devpts_fs_type); + struct ctl_table_header *table; + if (!err) { + table = register_sysctl_table(pty_root_table); devpts_mnt = kern_mount(&devpts_fs_type); if (IS_ERR(devpts_mnt)) { err = PTR_ERR(devpts_mnt); unregister_filesystem(&devpts_fs_type); + unregister_sysctl_table(table); } } return err; diff --git a/fs/direct-io.c b/fs/direct-io.c index 4a588dbd11b..f4aadd15b61 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -173,7 +173,7 @@ void inode_dio_wait(struct inode *inode) if (atomic_read(&inode->i_dio_count)) __inode_dio_wait(inode); } -EXPORT_SYMBOL_GPL(inode_dio_wait); +EXPORT_SYMBOL(inode_dio_wait); /* * inode_dio_done - signal finish of a direct I/O requests @@ -187,7 +187,7 @@ void inode_dio_done(struct inode *inode) if (atomic_dec_and_test(&inode->i_dio_count)) wake_up_bit(&inode->i_state, __I_DIO_WAKEUP); } -EXPORT_SYMBOL_GPL(inode_dio_done); +EXPORT_SYMBOL(inode_dio_done); /* * How many pages are in the queue? diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c index 83641574b01..dc5eb598b81 100644 --- a/fs/dlm/dir.c +++ b/fs/dlm/dir.c @@ -351,11 +351,28 @@ int dlm_dir_lookup(struct dlm_ls *ls, int nodeid, char *name, int namelen, static struct dlm_rsb *find_rsb_root(struct dlm_ls *ls, char *name, int len) { struct dlm_rsb *r; + uint32_t hash, bucket; + int rv; + + hash = jhash(name, len, 0); + bucket = hash & (ls->ls_rsbtbl_size - 1); + + spin_lock(&ls->ls_rsbtbl[bucket].lock); + rv = dlm_search_rsb_tree(&ls->ls_rsbtbl[bucket].keep, name, len, 0, &r); + if (rv) + rv = dlm_search_rsb_tree(&ls->ls_rsbtbl[bucket].toss, + name, len, 0, &r); + spin_unlock(&ls->ls_rsbtbl[bucket].lock); + + if (!rv) + return r; down_read(&ls->ls_root_sem); list_for_each_entry(r, &ls->ls_root_list, res_root_list) { if (len == r->res_length && !memcmp(name, r->res_name, len)) { up_read(&ls->ls_root_sem); + log_error(ls, "find_rsb_root revert to root_list %s", + r->res_name); return r; } } diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index d47183043c5..fa5c07d51dc 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -411,8 +411,8 @@ static int rsb_cmp(struct dlm_rsb *r, const char *name, int nlen) return memcmp(r->res_name, maxname, DLM_RESNAME_MAXLEN); } -static int search_rsb_tree(struct rb_root *tree, char *name, int len, - unsigned int flags, struct dlm_rsb **r_ret) +int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len, + unsigned int flags, struct dlm_rsb **r_ret) { struct rb_node *node = tree->rb_node; struct dlm_rsb *r; @@ -474,12 +474,12 @@ static int _search_rsb(struct dlm_ls *ls, char *name, int len, int b, struct dlm_rsb *r; int error; - error = search_rsb_tree(&ls->ls_rsbtbl[b].keep, name, len, flags, &r); + error = dlm_search_rsb_tree(&ls->ls_rsbtbl[b].keep, name, len, flags, &r); if (!error) { kref_get(&r->res_ref); goto out; } - error = search_rsb_tree(&ls->ls_rsbtbl[b].toss, name, len, flags, &r); + error = dlm_search_rsb_tree(&ls->ls_rsbtbl[b].toss, name, len, flags, &r); if (error) goto out; diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h index 265017a7c3e..1a255307f6f 100644 --- a/fs/dlm/lock.h +++ b/fs/dlm/lock.h @@ -28,6 +28,9 @@ void dlm_scan_waiters(struct dlm_ls *ls); void dlm_scan_timeout(struct dlm_ls *ls); void dlm_adjust_timeouts(struct dlm_ls *ls); +int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len, + unsigned int flags, struct dlm_rsb **r_ret); + int dlm_purge_locks(struct dlm_ls *ls); void dlm_purge_mstcpy_locks(struct dlm_rsb *r); void dlm_grant_after_purge(struct dlm_ls *ls); diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 0b3109ee425..133ef6dc7cb 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -52,6 +52,7 @@ #include <linux/mutex.h> #include <linux/sctp.h> #include <linux/slab.h> +#include <net/sctp/sctp.h> #include <net/sctp/user.h> #include <net/ipv6.h> @@ -474,9 +475,6 @@ static void process_sctp_notification(struct connection *con, int prim_len, ret; int addr_len; struct connection *new_con; - sctp_peeloff_arg_t parg; - int parglen = sizeof(parg); - int err; /* * We get this before any data for an association. @@ -525,23 +523,19 @@ static void process_sctp_notification(struct connection *con, return; /* Peel off a new sock */ - parg.associd = sn->sn_assoc_change.sac_assoc_id; - ret = kernel_getsockopt(con->sock, IPPROTO_SCTP, - SCTP_SOCKOPT_PEELOFF, - (void *)&parg, &parglen); + sctp_lock_sock(con->sock->sk); + ret = sctp_do_peeloff(con->sock->sk, + sn->sn_assoc_change.sac_assoc_id, + &new_con->sock); + sctp_release_sock(con->sock->sk); if (ret < 0) { log_print("Can't peel off a socket for " "connection %d to node %d: err=%d", - parg.associd, nodeid, ret); - return; - } - new_con->sock = sockfd_lookup(parg.sd, &err); - if (!new_con->sock) { - log_print("sockfd_lookup error %d", err); + (int)sn->sn_assoc_change.sac_assoc_id, + nodeid, ret); return; } add_sock(new_con->sock, new_con); - sockfd_put(new_con->sock); log_print("connecting to %d sctp association %d", nodeid, (int)sn->sn_assoc_change.sac_assoc_id); @@ -1082,7 +1076,7 @@ static void init_local(void) int i; dlm_local_count = 0; - for (i = 0; i < DLM_MAX_ADDR_COUNT - 1; i++) { + for (i = 0; i < DLM_MAX_ADDR_COUNT; i++) { if (dlm_our_addr(&sas, i)) break; diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index 2a834255c75..ea993128155 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -417,17 +417,6 @@ static int ecryptfs_encrypt_extent(struct page *enc_extent_page, (unsigned long long)(extent_base + extent_offset), rc); goto out; } - if (unlikely(ecryptfs_verbosity > 0)) { - ecryptfs_printk(KERN_DEBUG, "Encrypting extent " - "with iv:\n"); - ecryptfs_dump_hex(extent_iv, crypt_stat->iv_bytes); - ecryptfs_printk(KERN_DEBUG, "First 8 bytes before " - "encryption:\n"); - ecryptfs_dump_hex((char *) - (page_address(page) - + (extent_offset * crypt_stat->extent_size)), - 8); - } rc = ecryptfs_encrypt_page_offset(crypt_stat, enc_extent_page, 0, page, (extent_offset * crypt_stat->extent_size), @@ -440,14 +429,6 @@ static int ecryptfs_encrypt_extent(struct page *enc_extent_page, goto out; } rc = 0; - if (unlikely(ecryptfs_verbosity > 0)) { - ecryptfs_printk(KERN_DEBUG, "Encrypt extent [0x%.16llx]; " - "rc = [%d]\n", - (unsigned long long)(extent_base + extent_offset), rc); - ecryptfs_printk(KERN_DEBUG, "First 8 bytes after " - "encryption:\n"); - ecryptfs_dump_hex((char *)(page_address(enc_extent_page)), 8); - } out: return rc; } @@ -543,17 +524,6 @@ static int ecryptfs_decrypt_extent(struct page *page, (unsigned long long)(extent_base + extent_offset), rc); goto out; } - if (unlikely(ecryptfs_verbosity > 0)) { - ecryptfs_printk(KERN_DEBUG, "Decrypting extent " - "with iv:\n"); - ecryptfs_dump_hex(extent_iv, crypt_stat->iv_bytes); - ecryptfs_printk(KERN_DEBUG, "First 8 bytes before " - "decryption:\n"); - ecryptfs_dump_hex((char *) - (page_address(enc_extent_page) - + (extent_offset * crypt_stat->extent_size)), - 8); - } rc = ecryptfs_decrypt_page_offset(crypt_stat, page, (extent_offset * crypt_stat->extent_size), @@ -567,16 +537,6 @@ static int ecryptfs_decrypt_extent(struct page *page, goto out; } rc = 0; - if (unlikely(ecryptfs_verbosity > 0)) { - ecryptfs_printk(KERN_DEBUG, "Decrypt extent [0x%.16llx]; " - "rc = [%d]\n", - (unsigned long long)(extent_base + extent_offset), rc); - ecryptfs_printk(KERN_DEBUG, "First 8 bytes after " - "decryption:\n"); - ecryptfs_dump_hex((char *)(page_address(page) - + (extent_offset - * crypt_stat->extent_size)), 8); - } out: return rc; } @@ -1590,8 +1550,8 @@ int ecryptfs_read_and_validate_xattr_region(struct dentry *dentry, */ int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry) { - int rc = 0; - char *page_virt = NULL; + int rc; + char *page_virt; struct inode *ecryptfs_inode = ecryptfs_dentry->d_inode; struct ecryptfs_crypt_stat *crypt_stat = &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat; @@ -1616,11 +1576,13 @@ int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry) ecryptfs_dentry, ECRYPTFS_VALIDATE_HEADER_SIZE); if (rc) { + /* metadata is not in the file header, so try xattrs */ memset(page_virt, 0, PAGE_CACHE_SIZE); rc = ecryptfs_read_xattr_region(page_virt, ecryptfs_inode); if (rc) { printk(KERN_DEBUG "Valid eCryptfs headers not found in " - "file header region or xattr region\n"); + "file header region or xattr region, inode %lu\n", + ecryptfs_inode->i_ino); rc = -EINVAL; goto out; } @@ -1629,7 +1591,8 @@ int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry) ECRYPTFS_DONT_VALIDATE_HEADER_SIZE); if (rc) { printk(KERN_DEBUG "Valid eCryptfs headers not found in " - "file xattr region either\n"); + "file xattr region either, inode %lu\n", + ecryptfs_inode->i_ino); rc = -EINVAL; } if (crypt_stat->mount_crypt_stat->flags @@ -1640,7 +1603,8 @@ int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry) "crypto metadata only in the extended attribute " "region, but eCryptfs was mounted without " "xattr support enabled. eCryptfs will not treat " - "this like an encrypted file.\n"); + "this like an encrypted file, inode %lu\n", + ecryptfs_inode->i_ino); rc = -EINVAL; } } @@ -2026,6 +1990,17 @@ out: return; } +static size_t ecryptfs_max_decoded_size(size_t encoded_size) +{ + /* Not exact; conservatively long. Every block of 4 + * encoded characters decodes into a block of 3 + * decoded characters. This segment of code provides + * the caller with the maximum amount of allocated + * space that @dst will need to point to in a + * subsequent call. */ + return ((encoded_size + 1) * 3) / 4; +} + /** * ecryptfs_decode_from_filename * @dst: If NULL, this function only sets @dst_size and returns. If @@ -2044,13 +2019,7 @@ ecryptfs_decode_from_filename(unsigned char *dst, size_t *dst_size, size_t dst_byte_offset = 0; if (dst == NULL) { - /* Not exact; conservatively long. Every block of 4 - * encoded characters decodes into a block of 3 - * decoded characters. This segment of code provides - * the caller with the maximum amount of allocated - * space that @dst will need to point to in a - * subsequent call. */ - (*dst_size) = (((src_size + 1) * 3) / 4); + (*dst_size) = ecryptfs_max_decoded_size(src_size); goto out; } while (src_byte_offset < src_size) { @@ -2275,3 +2244,52 @@ out_free: out: return rc; } + +#define ENC_NAME_MAX_BLOCKLEN_8_OR_16 143 + +int ecryptfs_set_f_namelen(long *namelen, long lower_namelen, + struct ecryptfs_mount_crypt_stat *mount_crypt_stat) +{ + struct blkcipher_desc desc; + struct mutex *tfm_mutex; + size_t cipher_blocksize; + int rc; + + if (!(mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES)) { + (*namelen) = lower_namelen; + return 0; + } + + rc = ecryptfs_get_tfm_and_mutex_for_cipher_name(&desc.tfm, &tfm_mutex, + mount_crypt_stat->global_default_fn_cipher_name); + if (unlikely(rc)) { + (*namelen) = 0; + return rc; + } + + mutex_lock(tfm_mutex); + cipher_blocksize = crypto_blkcipher_blocksize(desc.tfm); + mutex_unlock(tfm_mutex); + + /* Return an exact amount for the common cases */ + if (lower_namelen == NAME_MAX + && (cipher_blocksize == 8 || cipher_blocksize == 16)) { + (*namelen) = ENC_NAME_MAX_BLOCKLEN_8_OR_16; + return 0; + } + + /* Return a safe estimate for the uncommon cases */ + (*namelen) = lower_namelen; + (*namelen) -= ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE; + /* Since this is the max decoded size, subtract 1 "decoded block" len */ + (*namelen) = ecryptfs_max_decoded_size(*namelen) - 3; + (*namelen) -= ECRYPTFS_TAG_70_MAX_METADATA_SIZE; + (*namelen) -= ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES; + /* Worst case is that the filename is padded nearly a full block size */ + (*namelen) -= cipher_blocksize - 1; + + if ((*namelen) < 0) + (*namelen) = 0; + + return 0; +} diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index a9f29b12fbf..867b64c5d84 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -151,12 +151,21 @@ ecryptfs_get_key_payload_data(struct key *key) * dentry name */ #define ECRYPTFS_TAG_73_PACKET_TYPE 0x49 /* FEK-encrypted filename as * metadata */ +#define ECRYPTFS_MIN_PKT_LEN_SIZE 1 /* Min size to specify packet length */ +#define ECRYPTFS_MAX_PKT_LEN_SIZE 2 /* Pass at least this many bytes to + * ecryptfs_parse_packet_length() and + * ecryptfs_write_packet_length() + */ /* Constraint: ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES >= * ECRYPTFS_MAX_IV_BYTES */ #define ECRYPTFS_FILENAME_MIN_RANDOM_PREPEND_BYTES 16 #define ECRYPTFS_NON_NULL 0x42 /* A reasonable substitute for NULL */ #define MD5_DIGEST_SIZE 16 #define ECRYPTFS_TAG_70_DIGEST_SIZE MD5_DIGEST_SIZE +#define ECRYPTFS_TAG_70_MIN_METADATA_SIZE (1 + ECRYPTFS_MIN_PKT_LEN_SIZE \ + + ECRYPTFS_SIG_SIZE + 1 + 1) +#define ECRYPTFS_TAG_70_MAX_METADATA_SIZE (1 + ECRYPTFS_MAX_PKT_LEN_SIZE \ + + ECRYPTFS_SIG_SIZE + 1 + 1) #define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FEK_ENCRYPTED." #define ECRYPTFS_FEK_ENCRYPTED_FILENAME_PREFIX_SIZE 23 #define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX "ECRYPTFS_FNEK_ENCRYPTED." @@ -696,6 +705,8 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size, size_t *packet_size, struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *data, size_t max_packet_size); +int ecryptfs_set_f_namelen(long *namelen, long lower_namelen, + struct ecryptfs_mount_crypt_stat *mount_crypt_stat); int ecryptfs_derive_iv(char *iv, struct ecryptfs_crypt_stat *crypt_stat, loff_t offset); diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index d3f95f941c4..2b17f2f9b12 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -48,8 +48,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, unsigned long nr_segs, loff_t pos) { ssize_t rc; - struct dentry *lower_dentry; - struct vfsmount *lower_vfsmount; + struct path lower; struct file *file = iocb->ki_filp; rc = generic_file_aio_read(iocb, iov, nr_segs, pos); @@ -60,9 +59,9 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, if (-EIOCBQUEUED == rc) rc = wait_on_sync_kiocb(iocb); if (rc >= 0) { - lower_dentry = ecryptfs_dentry_to_lower(file->f_path.dentry); - lower_vfsmount = ecryptfs_dentry_to_lower_mnt(file->f_path.dentry); - touch_atime(lower_vfsmount, lower_dentry); + lower.dentry = ecryptfs_dentry_to_lower(file->f_path.dentry); + lower.mnt = ecryptfs_dentry_to_lower_mnt(file->f_path.dentry); + touch_atime(&lower); } return rc; } diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 19a8ca4ab1d..ab35b113003 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -822,18 +822,6 @@ static int truncate_upper(struct dentry *dentry, struct iattr *ia, size_t num_zeros = (PAGE_CACHE_SIZE - (ia->ia_size & ~PAGE_CACHE_MASK)); - - /* - * XXX(truncate) this should really happen at the begginning - * of ->setattr. But the code is too messy to that as part - * of a larger patch. ecryptfs is also totally missing out - * on the inode_change_ok check at the beginning of - * ->setattr while would include this. - */ - rc = inode_newsize_ok(inode, ia->ia_size); - if (rc) - goto out; - if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) { truncate_setsize(inode, ia->ia_size); lower_ia->ia_size = ia->ia_size; @@ -883,6 +871,28 @@ out: return rc; } +static int ecryptfs_inode_newsize_ok(struct inode *inode, loff_t offset) +{ + struct ecryptfs_crypt_stat *crypt_stat; + loff_t lower_oldsize, lower_newsize; + + crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; + lower_oldsize = upper_size_to_lower_size(crypt_stat, + i_size_read(inode)); + lower_newsize = upper_size_to_lower_size(crypt_stat, offset); + if (lower_newsize > lower_oldsize) { + /* + * The eCryptfs inode and the new *lower* size are mixed here + * because we may not have the lower i_mutex held and/or it may + * not be appropriate to call inode_newsize_ok() with inodes + * from other filesystems. + */ + return inode_newsize_ok(inode, lower_newsize); + } + + return 0; +} + /** * ecryptfs_truncate * @dentry: The ecryptfs layer dentry @@ -899,6 +909,10 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length) struct iattr lower_ia = { .ia_valid = 0 }; int rc; + rc = ecryptfs_inode_newsize_ok(dentry->d_inode, new_length); + if (rc) + return rc; + rc = truncate_upper(dentry, &ia, &lower_ia); if (!rc && lower_ia.ia_valid & ATTR_SIZE) { struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); @@ -978,6 +992,16 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia) } } mutex_unlock(&crypt_stat->cs_mutex); + + rc = inode_change_ok(inode, ia); + if (rc) + goto out; + if (ia->ia_valid & ATTR_SIZE) { + rc = ecryptfs_inode_newsize_ok(inode, ia->ia_size); + if (rc) + goto out; + } + if (S_ISREG(inode->i_mode)) { rc = filemap_write_and_wait(inode->i_mapping); if (rc) @@ -1061,6 +1085,8 @@ ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value, } rc = vfs_setxattr(lower_dentry, name, value, size, flags); + if (!rc) + fsstack_copy_attr_all(dentry->d_inode, lower_dentry->d_inode); out: return rc; } diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index ac1ad48c237..2333203a120 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -109,7 +109,7 @@ int ecryptfs_parse_packet_length(unsigned char *data, size_t *size, (*size) += ((unsigned char)(data[1]) + 192); (*length_size) = 2; } else if (data[0] == 255) { - /* Five-byte length; we're not supposed to see this */ + /* If support is added, adjust ECRYPTFS_MAX_PKT_LEN_SIZE */ ecryptfs_printk(KERN_ERR, "Five-byte packet length not " "supported\n"); rc = -EINVAL; @@ -126,7 +126,7 @@ out: /** * ecryptfs_write_packet_length * @dest: The byte array target into which to write the length. Must - * have at least 5 bytes allocated. + * have at least ECRYPTFS_MAX_PKT_LEN_SIZE bytes allocated. * @size: The length to write. * @packet_size_length: The number of bytes used to encode the packet * length is written to this address. @@ -146,6 +146,7 @@ int ecryptfs_write_packet_length(char *dest, size_t size, dest[1] = ((size - 192) % 256); (*packet_size_length) = 2; } else { + /* If support is added, adjust ECRYPTFS_MAX_PKT_LEN_SIZE */ rc = -EINVAL; ecryptfs_printk(KERN_WARNING, "Unsupported packet size: [%zd]\n", size); @@ -678,10 +679,7 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes, * Octets N3-N4: Block-aligned encrypted filename * - Consists of a minimum number of random characters, a \0 * separator, and then the filename */ - s->max_packet_size = (1 /* Tag 70 identifier */ - + 3 /* Max Tag 70 packet size */ - + ECRYPTFS_SIG_SIZE /* FNEK sig */ - + 1 /* Cipher identifier */ + s->max_packet_size = (ECRYPTFS_TAG_70_MAX_METADATA_SIZE + s->block_aligned_filename_size); if (dest == NULL) { (*packet_size) = s->max_packet_size; @@ -933,10 +931,10 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size, goto out; } s->desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; - if (max_packet_size < (1 + 1 + ECRYPTFS_SIG_SIZE + 1 + 1)) { + if (max_packet_size < ECRYPTFS_TAG_70_MIN_METADATA_SIZE) { printk(KERN_WARNING "%s: max_packet_size is [%zd]; it must be " "at least [%d]\n", __func__, max_packet_size, - (1 + 1 + ECRYPTFS_SIG_SIZE + 1 + 1)); + ECRYPTFS_TAG_70_MIN_METADATA_SIZE); rc = -EINVAL; goto out; } diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index b4a6befb121..68954937a07 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -550,9 +550,8 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags if (IS_ERR(inode)) goto out_free; - s->s_root = d_alloc_root(inode); + s->s_root = d_make_root(inode); if (!s->s_root) { - iput(inode); rc = -ENOMEM; goto out_free; } @@ -795,15 +794,10 @@ static int __init ecryptfs_init(void) "Failed to allocate one or more kmem_cache objects\n"); goto out; } - rc = register_filesystem(&ecryptfs_fs_type); - if (rc) { - printk(KERN_ERR "Failed to register filesystem\n"); - goto out_free_kmem_caches; - } rc = do_sysfs_registration(); if (rc) { printk(KERN_ERR "sysfs registration failed\n"); - goto out_unregister_filesystem; + goto out_free_kmem_caches; } rc = ecryptfs_init_kthread(); if (rc) { @@ -824,19 +818,24 @@ static int __init ecryptfs_init(void) "rc = [%d]\n", rc); goto out_release_messaging; } + rc = register_filesystem(&ecryptfs_fs_type); + if (rc) { + printk(KERN_ERR "Failed to register filesystem\n"); + goto out_destroy_crypto; + } if (ecryptfs_verbosity > 0) printk(KERN_CRIT "eCryptfs verbosity set to %d. Secret values " "will be written to the syslog!\n", ecryptfs_verbosity); goto out; +out_destroy_crypto: + ecryptfs_destroy_crypto(); out_release_messaging: ecryptfs_release_messaging(); out_destroy_kthread: ecryptfs_destroy_kthread(); out_do_sysfs_unregistration: do_sysfs_unregistration(); -out_unregister_filesystem: - unregister_filesystem(&ecryptfs_fs_type); out_free_kmem_caches: ecryptfs_free_kmem_caches(); out: diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c index 940a82e63dc..3a06f4043df 100644 --- a/fs/ecryptfs/miscdev.c +++ b/fs/ecryptfs/miscdev.c @@ -218,6 +218,29 @@ out_unlock: return rc; } +/* + * miscdevfs packet format: + * Octet 0: Type + * Octets 1-4: network byte order msg_ctx->counter + * Octets 5-N0: Size of struct ecryptfs_message to follow + * Octets N0-N1: struct ecryptfs_message (including data) + * + * Octets 5-N1 not written if the packet type does not include a message + */ +#define PKT_TYPE_SIZE 1 +#define PKT_CTR_SIZE 4 +#define MIN_NON_MSG_PKT_SIZE (PKT_TYPE_SIZE + PKT_CTR_SIZE) +#define MIN_MSG_PKT_SIZE (PKT_TYPE_SIZE + PKT_CTR_SIZE \ + + ECRYPTFS_MIN_PKT_LEN_SIZE) +/* 4 + ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES comes from tag 65 packet format */ +#define MAX_MSG_PKT_SIZE (PKT_TYPE_SIZE + PKT_CTR_SIZE \ + + ECRYPTFS_MAX_PKT_LEN_SIZE \ + + sizeof(struct ecryptfs_message) \ + + 4 + ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES) +#define PKT_TYPE_OFFSET 0 +#define PKT_CTR_OFFSET PKT_TYPE_SIZE +#define PKT_LEN_OFFSET (PKT_TYPE_SIZE + PKT_CTR_SIZE) + /** * ecryptfs_miscdev_read - format and send message from queue * @file: fs/ecryptfs/euid miscdevfs handle (ignored) @@ -237,7 +260,7 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count, struct ecryptfs_daemon *daemon; struct ecryptfs_msg_ctx *msg_ctx; size_t packet_length_size; - char packet_length[3]; + char packet_length[ECRYPTFS_MAX_PKT_LEN_SIZE]; size_t i; size_t total_length; uid_t euid = current_euid(); @@ -305,15 +328,8 @@ check_list: packet_length_size = 0; msg_ctx->msg_size = 0; } - /* miscdevfs packet format: - * Octet 0: Type - * Octets 1-4: network byte order msg_ctx->counter - * Octets 5-N0: Size of struct ecryptfs_message to follow - * Octets N0-N1: struct ecryptfs_message (including data) - * - * Octets 5-N1 not written if the packet type does not - * include a message */ - total_length = (1 + 4 + packet_length_size + msg_ctx->msg_size); + total_length = (PKT_TYPE_SIZE + PKT_CTR_SIZE + packet_length_size + + msg_ctx->msg_size); if (count < total_length) { rc = 0; printk(KERN_WARNING "%s: Only given user buffer of " @@ -324,9 +340,10 @@ check_list: rc = -EFAULT; if (put_user(msg_ctx->type, buf)) goto out_unlock_msg_ctx; - if (put_user(cpu_to_be32(msg_ctx->counter), (__be32 __user *)(buf + 1))) + if (put_user(cpu_to_be32(msg_ctx->counter), + (__be32 __user *)(&buf[PKT_CTR_OFFSET]))) goto out_unlock_msg_ctx; - i = 5; + i = PKT_TYPE_SIZE + PKT_CTR_SIZE; if (msg_ctx->msg) { if (copy_to_user(&buf[i], packet_length, packet_length_size)) goto out_unlock_msg_ctx; @@ -391,12 +408,6 @@ out: * @count: Amount of data in @buf * @ppos: Pointer to offset in file (ignored) * - * miscdevfs packet format: - * Octet 0: Type - * Octets 1-4: network byte order msg_ctx->counter (0's for non-response) - * Octets 5-N0: Size of struct ecryptfs_message to follow - * Octets N0-N1: struct ecryptfs_message (including data) - * * Returns the number of bytes read from @buf */ static ssize_t @@ -405,60 +416,78 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf, { __be32 counter_nbo; u32 seq; - size_t packet_size, packet_size_length, i; - ssize_t sz = 0; + size_t packet_size, packet_size_length; char *data; uid_t euid = current_euid(); - int rc; + unsigned char packet_size_peek[ECRYPTFS_MAX_PKT_LEN_SIZE]; + ssize_t rc; - if (count == 0) - goto out; + if (count == 0) { + return 0; + } else if (count == MIN_NON_MSG_PKT_SIZE) { + /* Likely a harmless MSG_HELO or MSG_QUIT - no packet length */ + goto memdup; + } else if (count < MIN_MSG_PKT_SIZE || count > MAX_MSG_PKT_SIZE) { + printk(KERN_WARNING "%s: Acceptable packet size range is " + "[%d-%zu], but amount of data written is [%zu].", + __func__, MIN_MSG_PKT_SIZE, MAX_MSG_PKT_SIZE, count); + return -EINVAL; + } + + if (copy_from_user(packet_size_peek, &buf[PKT_LEN_OFFSET], + sizeof(packet_size_peek))) { + printk(KERN_WARNING "%s: Error while inspecting packet size\n", + __func__); + return -EFAULT; + } + rc = ecryptfs_parse_packet_length(packet_size_peek, &packet_size, + &packet_size_length); + if (rc) { + printk(KERN_WARNING "%s: Error parsing packet length; " + "rc = [%zd]\n", __func__, rc); + return rc; + } + + if ((PKT_TYPE_SIZE + PKT_CTR_SIZE + packet_size_length + packet_size) + != count) { + printk(KERN_WARNING "%s: Invalid packet size [%zu]\n", __func__, + packet_size); + return -EINVAL; + } + +memdup: data = memdup_user(buf, count); if (IS_ERR(data)) { printk(KERN_ERR "%s: memdup_user returned error [%ld]\n", __func__, PTR_ERR(data)); - goto out; + return PTR_ERR(data); } - sz = count; - i = 0; - switch (data[i++]) { + switch (data[PKT_TYPE_OFFSET]) { case ECRYPTFS_MSG_RESPONSE: - if (count < (1 + 4 + 1 + sizeof(struct ecryptfs_message))) { + if (count < (MIN_MSG_PKT_SIZE + + sizeof(struct ecryptfs_message))) { printk(KERN_WARNING "%s: Minimum acceptable packet " "size is [%zd], but amount of data written is " "only [%zd]. Discarding response packet.\n", __func__, - (1 + 4 + 1 + sizeof(struct ecryptfs_message)), - count); + (MIN_MSG_PKT_SIZE + + sizeof(struct ecryptfs_message)), count); + rc = -EINVAL; goto out_free; } - memcpy(&counter_nbo, &data[i], 4); + memcpy(&counter_nbo, &data[PKT_CTR_OFFSET], PKT_CTR_SIZE); seq = be32_to_cpu(counter_nbo); - i += 4; - rc = ecryptfs_parse_packet_length(&data[i], &packet_size, - &packet_size_length); + rc = ecryptfs_miscdev_response( + &data[PKT_LEN_OFFSET + packet_size_length], + packet_size, euid, current_user_ns(), + task_pid(current), seq); if (rc) { - printk(KERN_WARNING "%s: Error parsing packet length; " - "rc = [%d]\n", __func__, rc); - goto out_free; - } - i += packet_size_length; - if ((1 + 4 + packet_size_length + packet_size) != count) { - printk(KERN_WARNING "%s: (1 + packet_size_length([%zd])" - " + packet_size([%zd]))([%zd]) != " - "count([%zd]). Invalid packet format.\n", - __func__, packet_size_length, packet_size, - (1 + packet_size_length + packet_size), count); - goto out_free; - } - rc = ecryptfs_miscdev_response(&data[i], packet_size, - euid, current_user_ns(), - task_pid(current), seq); - if (rc) printk(KERN_WARNING "%s: Failed to deliver miscdev " - "response to requesting operation; rc = [%d]\n", + "response to requesting operation; rc = [%zd]\n", __func__, rc); + goto out_free; + } break; case ECRYPTFS_MSG_HELO: case ECRYPTFS_MSG_QUIT: @@ -467,12 +496,13 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf, ecryptfs_printk(KERN_WARNING, "Dropping miscdev " "message of unrecognized type [%d]\n", data[0]); - break; + rc = -EINVAL; + goto out_free; } + rc = count; out_free: kfree(data); -out: - return sz; + return rc; } diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c index 6a44148c5fb..a46b3a8fee1 100644 --- a/fs/ecryptfs/mmap.c +++ b/fs/ecryptfs/mmap.c @@ -57,6 +57,10 @@ struct page *ecryptfs_get_locked_page(struct inode *inode, loff_t index) * @page: Page that is locked before this call is made * * Returns zero on success; non-zero otherwise + * + * This is where we encrypt the data and pass the encrypted data to + * the lower filesystem. In OpenPGP-compatible mode, we operate on + * entire underlying packets. */ static int ecryptfs_writepage(struct page *page, struct writeback_control *wbc) { @@ -146,7 +150,7 @@ ecryptfs_copy_up_encrypted_with_header(struct page *page, /* This is a header extent */ char *page_virt; - page_virt = kmap_atomic(page, KM_USER0); + page_virt = kmap_atomic(page); memset(page_virt, 0, PAGE_CACHE_SIZE); /* TODO: Support more than one header extent */ if (view_extent_num == 0) { @@ -159,7 +163,7 @@ ecryptfs_copy_up_encrypted_with_header(struct page *page, crypt_stat, &written); } - kunmap_atomic(page_virt, KM_USER0); + kunmap_atomic(page_virt); flush_dcache_page(page); if (rc) { printk(KERN_ERR "%s: Error reading xattr " @@ -481,10 +485,6 @@ int ecryptfs_write_inode_size_to_metadata(struct inode *ecryptfs_inode) * @copied: The amount of data copied * @page: The eCryptfs page * @fsdata: The fsdata (unused) - * - * This is where we encrypt the data and pass the encrypted data to - * the lower filesystem. In OpenPGP-compatible mode, we operate on - * entire underlying packets. */ static int ecryptfs_write_end(struct file *file, struct address_space *mapping, diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c index 3745f7c2b9c..b2a34a192f4 100644 --- a/fs/ecryptfs/read_write.c +++ b/fs/ecryptfs/read_write.c @@ -130,13 +130,18 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, pgoff_t ecryptfs_page_idx = (pos >> PAGE_CACHE_SHIFT); size_t start_offset_in_page = (pos & ~PAGE_CACHE_MASK); size_t num_bytes = (PAGE_CACHE_SIZE - start_offset_in_page); - size_t total_remaining_bytes = ((offset + size) - pos); + loff_t total_remaining_bytes = ((offset + size) - pos); + + if (fatal_signal_pending(current)) { + rc = -EINTR; + break; + } if (num_bytes > total_remaining_bytes) num_bytes = total_remaining_bytes; if (pos < offset) { /* remaining zeros to write, up to destination offset */ - size_t total_remaining_zeros = (offset - pos); + loff_t total_remaining_zeros = (offset - pos); if (num_bytes > total_remaining_zeros) num_bytes = total_remaining_zeros; @@ -151,7 +156,7 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, ecryptfs_page_idx, rc); goto out; } - ecryptfs_page_virt = kmap_atomic(ecryptfs_page, KM_USER0); + ecryptfs_page_virt = kmap_atomic(ecryptfs_page); /* * pos: where we're now writing, offset: where the request was @@ -174,7 +179,7 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, (data + data_offset), num_bytes); data_offset += num_bytes; } - kunmap_atomic(ecryptfs_page_virt, KM_USER0); + kunmap_atomic(ecryptfs_page_virt); flush_dcache_page(ecryptfs_page); SetPageUptodate(ecryptfs_page); unlock_page(ecryptfs_page); @@ -193,15 +198,19 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, } pos += num_bytes; } - if ((offset + size) > ecryptfs_file_size) { - i_size_write(ecryptfs_inode, (offset + size)); + if (pos > ecryptfs_file_size) { + i_size_write(ecryptfs_inode, pos); if (crypt_stat->flags & ECRYPTFS_ENCRYPTED) { - rc = ecryptfs_write_inode_size_to_metadata( + int rc2; + + rc2 = ecryptfs_write_inode_size_to_metadata( ecryptfs_inode); - if (rc) { + if (rc2) { printk(KERN_ERR "Problem with " "ecryptfs_write_inode_size_to_metadata; " - "rc = [%d]\n", rc); + "rc = [%d]\n", rc2); + if (!rc) + rc = rc2; goto out; } } @@ -273,76 +282,3 @@ int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs, flush_dcache_page(page_for_ecryptfs); return rc; } - -#if 0 -/** - * ecryptfs_read - * @data: The virtual address into which to write the data read (and - * possibly decrypted) from the lower file - * @offset: The offset in the decrypted view of the file from which to - * read into @data - * @size: The number of bytes to read into @data - * @ecryptfs_file: The eCryptfs file from which to read - * - * Read an arbitrary amount of data from an arbitrary location in the - * eCryptfs page cache. This is done on an extent-by-extent basis; - * individual extents are decrypted and read from the lower page - * cache (via VFS reads). This function takes care of all the - * address translation to locations in the lower filesystem. - * - * Returns zero on success; non-zero otherwise - */ -int ecryptfs_read(char *data, loff_t offset, size_t size, - struct file *ecryptfs_file) -{ - struct inode *ecryptfs_inode = ecryptfs_file->f_dentry->d_inode; - struct page *ecryptfs_page; - char *ecryptfs_page_virt; - loff_t ecryptfs_file_size = i_size_read(ecryptfs_inode); - loff_t data_offset = 0; - loff_t pos; - int rc = 0; - - if ((offset + size) > ecryptfs_file_size) { - rc = -EINVAL; - printk(KERN_ERR "%s: Attempt to read data past the end of the " - "file; offset = [%lld]; size = [%td]; " - "ecryptfs_file_size = [%lld]\n", - __func__, offset, size, ecryptfs_file_size); - goto out; - } - pos = offset; - while (pos < (offset + size)) { - pgoff_t ecryptfs_page_idx = (pos >> PAGE_CACHE_SHIFT); - size_t start_offset_in_page = (pos & ~PAGE_CACHE_MASK); - size_t num_bytes = (PAGE_CACHE_SIZE - start_offset_in_page); - size_t total_remaining_bytes = ((offset + size) - pos); - - if (num_bytes > total_remaining_bytes) - num_bytes = total_remaining_bytes; - ecryptfs_page = ecryptfs_get_locked_page(ecryptfs_inode, - ecryptfs_page_idx); - if (IS_ERR(ecryptfs_page)) { - rc = PTR_ERR(ecryptfs_page); - printk(KERN_ERR "%s: Error getting page at " - "index [%ld] from eCryptfs inode " - "mapping; rc = [%d]\n", __func__, - ecryptfs_page_idx, rc); - goto out; - } - ecryptfs_page_virt = kmap_atomic(ecryptfs_page, KM_USER0); - memcpy((data + data_offset), - ((char *)ecryptfs_page_virt + start_offset_in_page), - num_bytes); - kunmap_atomic(ecryptfs_page_virt, KM_USER0); - flush_dcache_page(ecryptfs_page); - SetPageUptodate(ecryptfs_page); - unlock_page(ecryptfs_page); - page_cache_release(ecryptfs_page); - pos += num_bytes; - data_offset += num_bytes; - } -out: - return rc; -} -#endif /* 0 */ diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index 9df7fd6e0c3..2dd946b636d 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -30,6 +30,8 @@ #include <linux/seq_file.h> #include <linux/file.h> #include <linux/crypto.h> +#include <linux/statfs.h> +#include <linux/magic.h> #include "ecryptfs_kernel.h" struct kmem_cache *ecryptfs_inode_info_cache; @@ -102,10 +104,20 @@ static void ecryptfs_destroy_inode(struct inode *inode) static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); + int rc; if (!lower_dentry->d_sb->s_op->statfs) return -ENOSYS; - return lower_dentry->d_sb->s_op->statfs(lower_dentry, buf); + + rc = lower_dentry->d_sb->s_op->statfs(lower_dentry, buf); + if (rc) + return rc; + + buf->f_type = ECRYPTFS_SUPER_MAGIC; + rc = ecryptfs_set_f_namelen(&buf->f_namelen, buf->f_namelen, + &ecryptfs_superblock_to_private(dentry->d_sb)->mount_crypt_stat); + + return rc; } /** @@ -172,7 +184,6 @@ static int ecryptfs_show_options(struct seq_file *m, struct dentry *root) const struct super_operations ecryptfs_sops = { .alloc_inode = ecryptfs_alloc_inode, .destroy_inode = ecryptfs_destroy_inode, - .drop_inode = generic_drop_inode, .statfs = ecryptfs_statfs, .remount_fs = NULL, .evict_inode = ecryptfs_evict_inode, diff --git a/fs/efs/super.c b/fs/efs/super.c index 981106429a9..e755ec746c6 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -317,10 +317,9 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) goto out_no_fs; } - s->s_root = d_alloc_root(root); + s->s_root = d_make_root(root); if (!(s->s_root)) { printk(KERN_ERR "EFS: get root dentry failed\n"); - iput(root); ret = -ENOMEM; goto out_no_fs; } diff --git a/fs/eventfd.c b/fs/eventfd.c index d9a59177391..dba15fecf23 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -16,7 +16,7 @@ #include <linux/spinlock.h> #include <linux/anon_inodes.h> #include <linux/syscalls.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/kref.h> #include <linux/eventfd.h> diff --git a/fs/eventpoll.c b/fs/eventpoll.c index aabdfc38cf2..629e9ed99d0 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -320,6 +320,11 @@ static inline int ep_is_linked(struct list_head *p) return !list_empty(p); } +static inline struct eppoll_entry *ep_pwq_from_wait(wait_queue_t *p) +{ + return container_of(p, struct eppoll_entry, wait); +} + /* Get the "struct epitem" from a wait queue pointer */ static inline struct epitem *ep_item_from_wait(wait_queue_t *p) { @@ -422,6 +427,31 @@ out_unlock: return error; } +/* + * As described in commit 0ccf831cb lockdep: annotate epoll + * the use of wait queues used by epoll is done in a very controlled + * manner. Wake ups can nest inside each other, but are never done + * with the same locking. For example: + * + * dfd = socket(...); + * efd1 = epoll_create(); + * efd2 = epoll_create(); + * epoll_ctl(efd1, EPOLL_CTL_ADD, dfd, ...); + * epoll_ctl(efd2, EPOLL_CTL_ADD, efd1, ...); + * + * When a packet arrives to the device underneath "dfd", the net code will + * issue a wake_up() on its poll wake list. Epoll (efd1) has installed a + * callback wakeup entry on that queue, and the wake_up() performed by the + * "dfd" net code will end up in ep_poll_callback(). At this point epoll + * (efd1) notices that it may have some event ready, so it needs to wake up + * the waiters on its poll wait list (efd2). So it calls ep_poll_safewake() + * that ends up in another wake_up(), after having checked about the + * recursion constraints. That are, no more than EP_MAX_POLLWAKE_NESTS, to + * avoid stack blasting. + * + * When CONFIG_DEBUG_LOCK_ALLOC is enabled, make sure lockdep can handle + * this special case of epoll. + */ #ifdef CONFIG_DEBUG_LOCK_ALLOC static inline void ep_wake_up_nested(wait_queue_head_t *wqueue, unsigned long events, int subclass) @@ -467,6 +497,18 @@ static void ep_poll_safewake(wait_queue_head_t *wq) put_cpu(); } +static void ep_remove_wait_queue(struct eppoll_entry *pwq) +{ + wait_queue_head_t *whead; + + rcu_read_lock(); + /* If it is cleared by POLLFREE, it should be rcu-safe */ + whead = rcu_dereference(pwq->whead); + if (whead) + remove_wait_queue(whead, &pwq->wait); + rcu_read_unlock(); +} + /* * This function unregisters poll callbacks from the associated file * descriptor. Must be called with "mtx" held (or "epmutex" if called from @@ -481,7 +523,7 @@ static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi) pwq = list_first_entry(lsthead, struct eppoll_entry, llink); list_del(&pwq->llink); - remove_wait_queue(pwq->whead, &pwq->wait); + ep_remove_wait_queue(pwq); kmem_cache_free(pwq_cache, pwq); } } @@ -682,9 +724,12 @@ static int ep_read_events_proc(struct eventpoll *ep, struct list_head *head, void *priv) { struct epitem *epi, *tmp; + poll_table pt; + init_poll_funcptr(&pt, NULL); list_for_each_entry_safe(epi, tmp, head, rdllink) { - if (epi->ffd.file->f_op->poll(epi->ffd.file, NULL) & + pt._key = epi->event.events; + if (epi->ffd.file->f_op->poll(epi->ffd.file, &pt) & epi->event.events) return POLLIN | POLLRDNORM; else { @@ -842,6 +887,17 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k struct epitem *epi = ep_item_from_wait(wait); struct eventpoll *ep = epi->ep; + if ((unsigned long)key & POLLFREE) { + ep_pwq_from_wait(wait)->whead = NULL; + /* + * whead = NULL above can race with ep_remove_wait_queue() + * which can do another remove_wait_queue() after us, so we + * can't use __remove_wait_queue(). whead->lock is held by + * the caller. + */ + list_del_init(&wait->task_list); + } + spin_lock_irqsave(&ep->lock, flags); /* @@ -960,6 +1016,10 @@ static int path_count[PATH_ARR_SIZE]; static int path_count_inc(int nests) { + /* Allow an arbitrary number of depth 1 paths */ + if (nests == 0) + return 0; + if (++path_count[nests] > path_limits[nests]) return -1; return 0; @@ -1017,13 +1077,11 @@ static int reverse_path_check_proc(void *priv, void *cookie, int call_nests) */ static int reverse_path_check(void) { - int length = 0; int error = 0; struct file *current_file; /* let's call this for all tfiles */ list_for_each_entry(current_file, &tfile_check_list, f_tfile_llink) { - length++; path_count_init(); error = ep_call_nested(&poll_loop_ncalls, EP_MAX_NESTS, reverse_path_check_proc, current_file, @@ -1065,6 +1123,7 @@ static int ep_insert(struct eventpoll *ep, struct epoll_event *event, /* Initialize the poll table using the queue callback */ epq.epi = epi; init_poll_funcptr(&epq.pt, ep_ptable_queue_proc); + epq.pt._key = event->events; /* * Attach the item to the poll hooks and get current event bits. @@ -1159,6 +1218,9 @@ static int ep_modify(struct eventpoll *ep, struct epitem *epi, struct epoll_even { int pwake = 0; unsigned int revents; + poll_table pt; + + init_poll_funcptr(&pt, NULL); /* * Set the new event interest mask before calling f_op->poll(); @@ -1166,13 +1228,14 @@ static int ep_modify(struct eventpoll *ep, struct epitem *epi, struct epoll_even * f_op->poll() call and the new event set registering. */ epi->event.events = event->events; + pt._key = event->events; epi->event.data = event->data; /* protected by mtx */ /* * Get current event bits. We can safely use the file* here because * its usage count has been increased by the caller of this function. */ - revents = epi->ffd.file->f_op->poll(epi->ffd.file, NULL); + revents = epi->ffd.file->f_op->poll(epi->ffd.file, &pt); /* * If the item is "hot" and it is not registered inside the ready @@ -1207,6 +1270,9 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head, unsigned int revents; struct epitem *epi; struct epoll_event __user *uevent; + poll_table pt; + + init_poll_funcptr(&pt, NULL); /* * We can loop without lock because we are passed a task private list. @@ -1219,7 +1285,8 @@ static int ep_send_events_proc(struct eventpoll *ep, struct list_head *head, list_del_init(&epi->rdllink); - revents = epi->ffd.file->f_op->poll(epi->ffd.file, NULL) & + pt._key = epi->event.events; + revents = epi->ffd.file->f_op->poll(epi->ffd.file, &pt) & epi->event.events; /* diff --git a/fs/exec.c b/fs/exec.c index aeb135c7ff5..23559c227d9 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -63,6 +63,8 @@ #include <trace/events/task.h> #include "internal.h" +#include <trace/events/sched.h> + int core_uses_pid; char core_pattern[CORENAME_MAX_SIZE] = "core"; unsigned int core_pipe_limit; @@ -79,15 +81,13 @@ static atomic_t call_count = ATOMIC_INIT(1); static LIST_HEAD(formats); static DEFINE_RWLOCK(binfmt_lock); -int __register_binfmt(struct linux_binfmt * fmt, int insert) +void __register_binfmt(struct linux_binfmt * fmt, int insert) { - if (!fmt) - return -EINVAL; + BUG_ON(!fmt); write_lock(&binfmt_lock); insert ? list_add(&fmt->lh, &formats) : list_add_tail(&fmt->lh, &formats); write_unlock(&binfmt_lock); - return 0; } EXPORT_SYMBOL(__register_binfmt); @@ -822,7 +822,7 @@ static int exec_mmap(struct mm_struct *mm) /* Notify parent that we're no longer interested in the old VM */ tsk = current; old_mm = current->mm; - sync_mm_rss(tsk, old_mm); + sync_mm_rss(old_mm); mm_release(tsk, old_mm); if (old_mm) { @@ -848,6 +848,7 @@ static int exec_mmap(struct mm_struct *mm) if (old_mm) { up_read(&old_mm->mmap_sem); BUG_ON(active_mm != old_mm); + setmax_mm_hiwater_rss(&tsk->signal->maxrss, old_mm); mm_update_next_owner(old_mm); mmput(old_mm); return 0; @@ -975,8 +976,8 @@ static int de_thread(struct task_struct *tsk) sig->notify_count = 0; no_thread_group: - if (current->mm) - setmax_mm_hiwater_rss(&sig->maxrss, current->mm); + /* we have changed execution domain */ + tsk->exit_signal = SIGCHLD; exit_itimers(sig); flush_itimer_signals(); @@ -1071,6 +1072,21 @@ void set_task_comm(struct task_struct *tsk, char *buf) perf_event_comm(tsk); } +static void filename_to_taskname(char *tcomm, const char *fn, unsigned int len) +{ + int i, ch; + + /* Copies the binary name from after last slash */ + for (i = 0; (ch = *(fn++)) != '\0';) { + if (ch == '/') + i = 0; /* overwrite what we wrote */ + else + if (i < len - 1) + tcomm[i++] = ch; + } + tcomm[i] = '\0'; +} + int flush_old_exec(struct linux_binprm * bprm) { int retval; @@ -1085,6 +1101,7 @@ int flush_old_exec(struct linux_binprm * bprm) set_mm_exe_file(bprm->mm, bprm->file); + filename_to_taskname(bprm->tcomm, bprm->filename, sizeof(bprm->tcomm)); /* * Release all of the old mmap stuff */ @@ -1096,7 +1113,7 @@ int flush_old_exec(struct linux_binprm * bprm) bprm->mm = NULL; /* We're using it now */ set_fs(USER_DS); - current->flags &= ~(PF_RANDOMIZE | PF_KTHREAD); + current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD); flush_thread(); current->personality &= ~bprm->per_clear; @@ -1116,10 +1133,6 @@ EXPORT_SYMBOL(would_dump); void setup_new_exec(struct linux_binprm * bprm) { - int i, ch; - const char *name; - char tcomm[sizeof(current->comm)]; - arch_pick_mmap_layout(current->mm); /* This is the point of no return */ @@ -1130,18 +1143,7 @@ void setup_new_exec(struct linux_binprm * bprm) else set_dumpable(current->mm, suid_dumpable); - name = bprm->filename; - - /* Copies the binary name from after last slash */ - for (i=0; (ch = *(name++)) != '\0';) { - if (ch == '/') - i = 0; /* overwrite what we wrote */ - else - if (i < (sizeof(tcomm) - 1)) - tcomm[i++] = ch; - } - tcomm[i] = '\0'; - set_task_comm(current, tcomm); + set_task_comm(current, bprm->tcomm); /* Set the new mm task size. We have to do that late because it may * depend on TIF_32BIT which is only updated in flush_thread() on @@ -1338,13 +1340,13 @@ int remove_arg_zero(struct linux_binprm *bprm) ret = -EFAULT; goto out; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); for (; offset < PAGE_SIZE && kaddr[offset]; offset++, bprm->p++) ; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); put_arg_page(page); if (offset == PAGE_SIZE) @@ -1401,9 +1403,10 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) */ bprm->recursion_depth = depth; if (retval >= 0) { - if (depth == 0) - ptrace_event(PTRACE_EVENT_EXEC, - old_pid); + if (depth == 0) { + trace_sched_process_exec(current, old_pid, bprm); + ptrace_event(PTRACE_EVENT_EXEC, old_pid); + } put_binfmt(fmt); allow_write_access(bprm->file); if (bprm->file) @@ -1914,7 +1917,6 @@ static int coredump_wait(int exit_code, struct core_state *core_state) { struct task_struct *tsk = current; struct mm_struct *mm = tsk->mm; - struct completion *vfork_done; int core_waiters = -EBUSY; init_completion(&core_state->startup); @@ -1926,22 +1928,9 @@ static int coredump_wait(int exit_code, struct core_state *core_state) core_waiters = zap_threads(tsk, mm, core_state, exit_code); up_write(&mm->mmap_sem); - if (unlikely(core_waiters < 0)) - goto fail; - - /* - * Make sure nobody is waiting for us to release the VM, - * otherwise we can deadlock when we wait on each other - */ - vfork_done = tsk->vfork_done; - if (vfork_done) { - tsk->vfork_done = NULL; - complete(vfork_done); - } - - if (core_waiters) + if (core_waiters > 0) wait_for_completion(&core_state->startup); -fail: + return core_waiters; } diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c index 80405836ba6..c61e62ac231 100644 --- a/fs/exofs/dir.c +++ b/fs/exofs/dir.c @@ -597,7 +597,7 @@ int exofs_make_empty(struct inode *inode, struct inode *parent) goto fail; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); de = (struct exofs_dir_entry *)kaddr; de->name_len = 1; de->rec_len = cpu_to_le16(EXOFS_DIR_REC_LEN(1)); @@ -611,7 +611,7 @@ int exofs_make_empty(struct inode *inode, struct inode *parent) de->inode_no = cpu_to_le64(parent->i_ino); memcpy(de->name, PARENT_DIR, sizeof(PARENT_DIR)); exofs_set_de_type(de, inode); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); err = exofs_commit_chunk(page, 0, chunk_size); fail: page_cache_release(page); diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c index 9dbf0c30103..fc7161d6bf6 100644 --- a/fs/exofs/namei.c +++ b/fs/exofs/namei.c @@ -143,9 +143,6 @@ static int exofs_link(struct dentry *old_dentry, struct inode *dir, { struct inode *inode = old_dentry->d_inode; - if (inode->i_nlink >= EXOFS_LINK_MAX) - return -EMLINK; - inode->i_ctime = CURRENT_TIME; inode_inc_link_count(inode); ihold(inode); @@ -156,10 +153,7 @@ static int exofs_link(struct dentry *old_dentry, struct inode *dir, static int exofs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { struct inode *inode; - int err = -EMLINK; - - if (dir->i_nlink >= EXOFS_LINK_MAX) - goto out; + int err; inode_inc_link_count(dir); @@ -275,11 +269,6 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry, if (err) goto out_dir; } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= EXOFS_LINK_MAX) - goto out_dir; - } err = exofs_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/exofs/super.c b/fs/exofs/super.c index d22cd168c6e..7f2b590a36b 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -754,6 +754,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent) sb->s_blocksize = EXOFS_BLKSIZE; sb->s_blocksize_bits = EXOFS_BLKSHIFT; sb->s_maxbytes = MAX_LFS_FILESIZE; + sb->s_max_links = EXOFS_LINK_MAX; atomic_set(&sbi->s_curr_pending, 0); sb->s_bdev = NULL; sb->s_dev = 0; @@ -818,9 +819,8 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent) ret = PTR_ERR(root); goto free_sbi; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { - iput(root); EXOFS_ERR("ERROR: get root inode failed\n"); ret = -ENOMEM; goto free_sbi; diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c index d37df352d32..0f4f5c92925 100644 --- a/fs/ext2/dir.c +++ b/fs/ext2/dir.c @@ -645,7 +645,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent) unlock_page(page); goto fail; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr, 0, chunk_size); de = (struct ext2_dir_entry_2 *)kaddr; de->name_len = 1; @@ -660,7 +660,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent) de->inode = cpu_to_le32(parent->i_ino); memcpy (de->name, "..\0", 4); ext2_set_de_type (de, inode); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); err = ext2_commit_chunk(page, 0, chunk_size); fail: page_cache_release(page); diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c index 1089f760c84..2de655f5d62 100644 --- a/fs/ext2/ioctl.c +++ b/fs/ext2/ioctl.c @@ -77,10 +77,11 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) flags = flags & EXT2_FL_USER_MODIFIABLE; flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE; ei->i_flags = flags; - mutex_unlock(&inode->i_mutex); ext2_set_inode_flags(inode); inode->i_ctime = CURRENT_TIME_SEC; + mutex_unlock(&inode->i_mutex); + mark_inode_dirty(inode); setflags_out: mnt_drop_write_file(filp); @@ -88,20 +89,29 @@ setflags_out: } case EXT2_IOC_GETVERSION: return put_user(inode->i_generation, (int __user *) arg); - case EXT2_IOC_SETVERSION: + case EXT2_IOC_SETVERSION: { + __u32 generation; + if (!inode_owner_or_capable(inode)) return -EPERM; ret = mnt_want_write_file(filp); if (ret) return ret; - if (get_user(inode->i_generation, (int __user *) arg)) { + if (get_user(generation, (int __user *) arg)) { ret = -EFAULT; - } else { - inode->i_ctime = CURRENT_TIME_SEC; - mark_inode_dirty(inode); + goto setversion_out; } + + mutex_lock(&inode->i_mutex); + inode->i_ctime = CURRENT_TIME_SEC; + inode->i_generation = generation; + mutex_unlock(&inode->i_mutex); + + mark_inode_dirty(inode); +setversion_out: mnt_drop_write_file(filp); return ret; + } case EXT2_IOC_GETRSVSZ: if (test_opt(inode->i_sb, RESERVATION) && S_ISREG(inode->i_mode) diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index 080419814ba..dffb8653628 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -195,9 +195,6 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir, struct inode *inode = old_dentry->d_inode; int err; - if (inode->i_nlink >= EXT2_LINK_MAX) - return -EMLINK; - dquot_initialize(dir); inode->i_ctime = CURRENT_TIME_SEC; @@ -217,10 +214,7 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir, static int ext2_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode) { struct inode * inode; - int err = -EMLINK; - - if (dir->i_nlink >= EXT2_LINK_MAX) - goto out; + int err; dquot_initialize(dir); @@ -346,11 +340,6 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry, drop_nlink(new_inode); inode_dec_link_count(new_inode); } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= EXT2_LINK_MAX) - goto out_dir; - } err = ext2_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 0090595beb2..e1025c7a437 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -919,6 +919,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) } sb->s_maxbytes = ext2_max_size(sb->s_blocksize_bits); + sb->s_max_links = EXT2_LINK_MAX; if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV) { sbi->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE; @@ -1087,9 +1088,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount3; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { - iput(root); ext2_msg(sb, KERN_ERR, "error: get root inode failed"); ret = -ENOMEM; goto failed_mount3; diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c index a2038928f9a..1e036b79384 100644 --- a/fs/ext3/balloc.c +++ b/fs/ext3/balloc.c @@ -1743,8 +1743,11 @@ allocated: *errp = 0; brelse(bitmap_bh); - dquot_free_block(inode, *count-num); - *count = num; + + if (num < *count) { + dquot_free_block(inode, *count-num); + *count = num; + } trace_ext3_allocate_blocks(inode, goal, num, (unsigned long long)ret_block); @@ -1970,7 +1973,7 @@ static ext3_grpblk_t ext3_trim_all_free(struct super_block *sb, sbi = EXT3_SB(sb); /* Walk through the whole group */ - while (start < max) { + while (start <= max) { start = bitmap_search_next_usable_block(start, bitmap_bh, max); if (start < 0) break; @@ -1980,7 +1983,7 @@ static ext3_grpblk_t ext3_trim_all_free(struct super_block *sb, * Allocate contiguous free extents by setting bits in the * block bitmap */ - while (next < max + while (next <= max && claim_block(sb_bgl_lock(sbi, group), next, bitmap_bh)) { next++; @@ -2091,73 +2094,74 @@ err_out: */ int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range) { - ext3_grpblk_t last_block, first_block, free_blocks; - unsigned long first_group, last_group; - unsigned long group, ngroups; + ext3_grpblk_t last_block, first_block; + unsigned long group, first_group, last_group; struct ext3_group_desc *gdp; struct ext3_super_block *es = EXT3_SB(sb)->s_es; - uint64_t start, len, minlen, trimmed; + uint64_t start, minlen, end, trimmed = 0; + ext3_fsblk_t first_data_blk = + le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block); ext3_fsblk_t max_blks = le32_to_cpu(es->s_blocks_count); int ret = 0; - start = (range->start >> sb->s_blocksize_bits) + - le32_to_cpu(es->s_first_data_block); - len = range->len >> sb->s_blocksize_bits; + start = range->start >> sb->s_blocksize_bits; + end = start + (range->len >> sb->s_blocksize_bits) - 1; minlen = range->minlen >> sb->s_blocksize_bits; - trimmed = 0; - if (unlikely(minlen > EXT3_BLOCKS_PER_GROUP(sb))) + if (unlikely(minlen > EXT3_BLOCKS_PER_GROUP(sb)) || + unlikely(start >= max_blks)) return -EINVAL; - if (start >= max_blks) - return -EINVAL; - if (start + len > max_blks) - len = max_blks - start; + if (end >= max_blks) + end = max_blks - 1; + if (end <= first_data_blk) + goto out; + if (start < first_data_blk) + start = first_data_blk; - ngroups = EXT3_SB(sb)->s_groups_count; smp_rmb(); /* Determine first and last group to examine based on start and len */ ext3_get_group_no_and_offset(sb, (ext3_fsblk_t) start, &first_group, &first_block); - ext3_get_group_no_and_offset(sb, (ext3_fsblk_t) (start + len), + ext3_get_group_no_and_offset(sb, (ext3_fsblk_t) end, &last_group, &last_block); - last_group = (last_group > ngroups - 1) ? ngroups - 1 : last_group; - last_block = EXT3_BLOCKS_PER_GROUP(sb); - if (first_group > last_group) - return -EINVAL; + /* end now represents the last block to discard in this group */ + end = EXT3_BLOCKS_PER_GROUP(sb) - 1; for (group = first_group; group <= last_group; group++) { gdp = ext3_get_group_desc(sb, group, NULL); if (!gdp) break; - free_blocks = le16_to_cpu(gdp->bg_free_blocks_count); - if (free_blocks < minlen) - continue; - /* * For all the groups except the last one, last block will - * always be EXT3_BLOCKS_PER_GROUP(sb), so we only need to - * change it for the last group in which case first_block + - * len < EXT3_BLOCKS_PER_GROUP(sb). + * always be EXT3_BLOCKS_PER_GROUP(sb)-1, so we only need to + * change it for the last group, note that last_block is + * already computed earlier by ext3_get_group_no_and_offset() */ - if (first_block + len < EXT3_BLOCKS_PER_GROUP(sb)) - last_block = first_block + len; - len -= last_block - first_block; + if (group == last_group) + end = last_block; - ret = ext3_trim_all_free(sb, group, first_block, - last_block, minlen); - if (ret < 0) - break; + if (le16_to_cpu(gdp->bg_free_blocks_count) >= minlen) { + ret = ext3_trim_all_free(sb, group, first_block, + end, minlen); + if (ret < 0) + break; + trimmed += ret; + } - trimmed += ret; + /* + * For every group except the first one, we are sure + * that the first block to discard will be block #0. + */ first_block = 0; } - if (ret >= 0) + if (ret > 0) ret = 0; - range->len = trimmed * sb->s_blocksize; +out: + range->len = trimmed * sb->s_blocksize; return ret; } diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 2d0afeca0b4..6d3418662b5 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -756,6 +756,7 @@ static int ext3_splice_branch(handle_t *handle, struct inode *inode, struct ext3_block_alloc_info *block_i; ext3_fsblk_t current_block; struct ext3_inode_info *ei = EXT3_I(inode); + struct timespec now; block_i = ei->i_block_alloc_info; /* @@ -795,9 +796,11 @@ static int ext3_splice_branch(handle_t *handle, struct inode *inode, } /* We are done with atomic stuff, now do the rest of housekeeping */ - - inode->i_ctime = CURRENT_TIME_SEC; - ext3_mark_inode_dirty(handle, inode); + now = CURRENT_TIME_SEC; + if (!timespec_equal(&inode->i_ctime, &now) || !where->bh) { + inode->i_ctime = now; + ext3_mark_inode_dirty(handle, inode); + } /* ext3_mark_inode_dirty already updated i_sync_tid */ atomic_set(&ei->i_datasync_tid, handle->h_transaction->t_tid); diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 726c7ef6cdf..e0b45b93327 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -2046,10 +2046,9 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) ext3_msg(sb, KERN_ERR, "error: corrupt root inode, run e2fsck"); goto failed_mount3; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { ext3_msg(sb, KERN_ERR, "error: get root dentry failed"); - iput(root); ret = -ENOMEM; goto failed_mount3; } diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index f9e2cd8cf71..4bbd07a6fa1 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -336,10 +336,10 @@ err_out: * Return buffer_head on success or NULL in case of failure. */ struct buffer_head * -ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group) +ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group) { struct ext4_group_desc *desc; - struct buffer_head *bh = NULL; + struct buffer_head *bh; ext4_fsblk_t bitmap_blk; desc = ext4_get_group_desc(sb, block_group, NULL); @@ -348,9 +348,9 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group) bitmap_blk = ext4_block_bitmap(sb, desc); bh = sb_getblk(sb, bitmap_blk); if (unlikely(!bh)) { - ext4_error(sb, "Cannot read block bitmap - " - "block_group = %u, block_bitmap = %llu", - block_group, bitmap_blk); + ext4_error(sb, "Cannot get buffer for block bitmap - " + "block_group = %u, block_bitmap = %llu", + block_group, bitmap_blk); return NULL; } @@ -382,25 +382,50 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group) return bh; } /* - * submit the buffer_head for read. We can - * safely mark the bitmap as uptodate now. - * We do it here so the bitmap uptodate bit - * get set with buffer lock held. + * submit the buffer_head for reading */ + set_buffer_new(bh); trace_ext4_read_block_bitmap_load(sb, block_group); - set_bitmap_uptodate(bh); - if (bh_submit_read(bh) < 0) { - put_bh(bh); + bh->b_end_io = ext4_end_bitmap_read; + get_bh(bh); + submit_bh(READ, bh); + return bh; +} + +/* Returns 0 on success, 1 on error */ +int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group, + struct buffer_head *bh) +{ + struct ext4_group_desc *desc; + + if (!buffer_new(bh)) + return 0; + desc = ext4_get_group_desc(sb, block_group, NULL); + if (!desc) + return 1; + wait_on_buffer(bh); + if (!buffer_uptodate(bh)) { ext4_error(sb, "Cannot read block bitmap - " - "block_group = %u, block_bitmap = %llu", - block_group, bitmap_blk); - return NULL; + "block_group = %u, block_bitmap = %llu", + block_group, (unsigned long long) bh->b_blocknr); + return 1; } + clear_buffer_new(bh); + /* Panic or remount fs read-only if block bitmap is invalid */ ext4_valid_block_bitmap(sb, desc, block_group, bh); - /* - * file system mounted not to panic on error, - * continue with corrupt bitmap - */ + return 0; +} + +struct buffer_head * +ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group) +{ + struct buffer_head *bh; + + bh = ext4_read_block_bitmap_nowait(sb, block_group); + if (ext4_wait_block_bitmap(sb, block_group, bh)) { + put_bh(bh); + return NULL; + } return bh; } diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 164c56092e5..ad56866d729 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -91,17 +91,17 @@ int __ext4_check_dir_entry(const char *function, unsigned int line, return 0; if (filp) - ext4_error_file(filp, function, line, bh ? bh->b_blocknr : 0, + ext4_error_file(filp, function, line, bh->b_blocknr, "bad entry in directory: %s - offset=%u(%u), " "inode=%u, rec_len=%d, name_len=%d", - error_msg, (unsigned) (offset%bh->b_size), + error_msg, (unsigned) (offset % bh->b_size), offset, le32_to_cpu(de->inode), rlen, de->name_len); else - ext4_error_inode(dir, function, line, bh ? bh->b_blocknr : 0, + ext4_error_inode(dir, function, line, bh->b_blocknr, "bad entry in directory: %s - offset=%u(%u), " "inode=%u, rec_len=%d, name_len=%d", - error_msg, (unsigned) (offset%bh->b_size), + error_msg, (unsigned) (offset % bh->b_size), offset, le32_to_cpu(de->inode), rlen, de->name_len); @@ -425,8 +425,9 @@ static int call_filldir(struct file *filp, void *dirent, sb = inode->i_sb; if (!fname) { - printk(KERN_ERR "EXT4-fs: call_filldir: called with " - "null fname?!?\n"); + ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: comm %s: " + "called with null fname?!?", __func__, __LINE__, + inode->i_ino, current->comm); return 0; } curr_pos = hash2pos(fname->hash, fname->minor_hash); diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 513004fc3d8..ded731ac8a3 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -53,7 +53,7 @@ printk(KERN_DEBUG f, ## a); \ } while (0) #else -#define ext4_debug(f, a...) do {} while (0) +#define ext4_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__) #endif #define EXT4_ERROR_INODE(inode, fmt, a...) \ @@ -184,6 +184,8 @@ struct mpage_da_data { #define EXT4_IO_END_UNWRITTEN 0x0001 #define EXT4_IO_END_ERROR 0x0002 #define EXT4_IO_END_QUEUED 0x0004 +#define EXT4_IO_END_DIRECT 0x0008 +#define EXT4_IO_END_IN_FSYNC 0x0010 struct ext4_io_page { struct page *p_page; @@ -192,18 +194,25 @@ struct ext4_io_page { #define MAX_IO_PAGES 128 +/* + * For converting uninitialized extents on a work queue. + * + * 'page' is only used from the writepage() path; 'pages' is only used for + * buffered writes; they are used to keep page references until conversion + * takes place. For AIO/DIO, neither field is filled in. + */ typedef struct ext4_io_end { struct list_head list; /* per-file finished IO list */ struct inode *inode; /* file being written to */ unsigned int flag; /* unwritten or not */ - struct page *page; /* page struct for buffer write */ + struct page *page; /* for writepage() path */ loff_t offset; /* offset in the file */ ssize_t size; /* size of the extent */ struct work_struct work; /* data work queue */ struct kiocb *iocb; /* iocb struct for AIO */ int result; /* error value for AIO */ - int num_io_pages; - struct ext4_io_page *pages[MAX_IO_PAGES]; + int num_io_pages; /* for writepages() */ + struct ext4_io_page *pages[MAX_IO_PAGES]; /* for writepages() */ } ext4_io_end_t; struct ext4_io_submit { @@ -923,6 +932,7 @@ struct ext4_inode_info { #define EXT4_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ #define EXT4_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */ #define EXT4_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */ +#define EXT4_MOUNT_ERRORS_MASK 0x00070 #define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ #define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ #define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ @@ -941,7 +951,6 @@ struct ext4_inode_info { #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */ #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */ #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */ -#define EXT4_MOUNT_I_VERSION 0x2000000 /* i_version support */ #define EXT4_MOUNT_MBLK_IO_SUBMIT 0x4000000 /* multi-block io submits */ #define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */ #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */ @@ -1142,6 +1151,7 @@ struct ext4_sb_info { unsigned int s_mount_opt; unsigned int s_mount_opt2; unsigned int s_mount_flags; + unsigned int s_def_mount_opt; ext4_fsblk_t s_sb_block; uid_t s_resuid; gid_t s_resgid; @@ -1420,8 +1430,9 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */ #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */ -#define EXT4_FEATURE_INCOMPAT_INLINEDATA 0x2000 /* data in inode */ +#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x2000 /* use crc32c for bg */ #define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */ +#define EXT4_FEATURE_INCOMPAT_INLINEDATA 0x8000 /* data in inode */ #define EXT2_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR #define EXT2_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \ @@ -1794,8 +1805,14 @@ extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb, ext4_group_t block_group, struct buffer_head ** bh); extern int ext4_should_retry_alloc(struct super_block *sb, int *retries); -struct buffer_head *ext4_read_block_bitmap(struct super_block *sb, - ext4_group_t block_group); + +extern struct buffer_head *ext4_read_block_bitmap_nowait(struct super_block *sb, + ext4_group_t block_group); +extern int ext4_wait_block_bitmap(struct super_block *sb, + ext4_group_t block_group, + struct buffer_head *bh); +extern struct buffer_head *ext4_read_block_bitmap(struct super_block *sb, + ext4_group_t block_group); extern void ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh, ext4_group_t group, @@ -1841,6 +1858,7 @@ extern void ext4_check_inodes_bitmap(struct super_block *); extern void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap); extern int ext4_init_inode_table(struct super_block *sb, ext4_group_t group, int barrier); +extern void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate); /* mballoc.c */ extern long ext4_mb_stats; diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h index a52db3a69a3..0f58b86e3a0 100644 --- a/fs/ext4/ext4_extents.h +++ b/fs/ext4/ext4_extents.h @@ -47,9 +47,9 @@ */ #define EXT_DEBUG__ #ifdef EXT_DEBUG -#define ext_debug(a...) printk(a) +#define ext_debug(fmt, ...) printk(fmt, ##__VA_ARGS__) #else -#define ext_debug(a...) +#define ext_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__) #endif /* diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h index 5802fa1dab1..83b20fcf940 100644 --- a/fs/ext4/ext4_jbd2.h +++ b/fs/ext4/ext4_jbd2.h @@ -104,6 +104,78 @@ #define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb)) #define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb)) +/** + * struct ext4_journal_cb_entry - Base structure for callback information. + * + * This struct is a 'seed' structure for a using with your own callback + * structs. If you are using callbacks you must allocate one of these + * or another struct of your own definition which has this struct + * as it's first element and pass it to ext4_journal_callback_add(). + */ +struct ext4_journal_cb_entry { + /* list information for other callbacks attached to the same handle */ + struct list_head jce_list; + + /* Function to call with this callback structure */ + void (*jce_func)(struct super_block *sb, + struct ext4_journal_cb_entry *jce, int error); + + /* user data goes here */ +}; + +/** + * ext4_journal_callback_add: add a function to call after transaction commit + * @handle: active journal transaction handle to register callback on + * @func: callback function to call after the transaction has committed: + * @sb: superblock of current filesystem for transaction + * @jce: returned journal callback data + * @rc: journal state at commit (0 = transaction committed properly) + * @jce: journal callback data (internal and function private data struct) + * + * The registered function will be called in the context of the journal thread + * after the transaction for which the handle was created has completed. + * + * No locks are held when the callback function is called, so it is safe to + * call blocking functions from within the callback, but the callback should + * not block or run for too long, or the filesystem will be blocked waiting for + * the next transaction to commit. No journaling functions can be used, or + * there is a risk of deadlock. + * + * There is no guaranteed calling order of multiple registered callbacks on + * the same transaction. + */ +static inline void ext4_journal_callback_add(handle_t *handle, + void (*func)(struct super_block *sb, + struct ext4_journal_cb_entry *jce, + int rc), + struct ext4_journal_cb_entry *jce) +{ + struct ext4_sb_info *sbi = + EXT4_SB(handle->h_transaction->t_journal->j_private); + + /* Add the jce to transaction's private list */ + jce->jce_func = func; + spin_lock(&sbi->s_md_lock); + list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list); + spin_unlock(&sbi->s_md_lock); +} + +/** + * ext4_journal_callback_del: delete a registered callback + * @handle: active journal transaction handle on which callback was registered + * @jce: registered journal callback entry to unregister + */ +static inline void ext4_journal_callback_del(handle_t *handle, + struct ext4_journal_cb_entry *jce) +{ + struct ext4_sb_info *sbi = + EXT4_SB(handle->h_transaction->t_journal->j_private); + + spin_lock(&sbi->s_md_lock); + list_del_init(&jce->jce_list); + spin_unlock(&sbi->s_md_lock); +} + int ext4_mark_iloc_dirty(handle_t *handle, struct inode *inode, @@ -261,43 +333,45 @@ static inline void ext4_update_inode_fsync_trans(handle_t *handle, /* super.c */ int ext4_force_commit(struct super_block *sb); -static inline int ext4_should_journal_data(struct inode *inode) +/* + * Ext4 inode journal modes + */ +#define EXT4_INODE_JOURNAL_DATA_MODE 0x01 /* journal data mode */ +#define EXT4_INODE_ORDERED_DATA_MODE 0x02 /* ordered data mode */ +#define EXT4_INODE_WRITEBACK_DATA_MODE 0x04 /* writeback data mode */ + +static inline int ext4_inode_journal_mode(struct inode *inode) { if (EXT4_JOURNAL(inode) == NULL) - return 0; - if (!S_ISREG(inode->i_mode)) - return 1; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) - return 1; - if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA)) - return 1; - return 0; + return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */ + /* We do not support data journalling with delayed allocation */ + if (!S_ISREG(inode->i_mode) || + test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) + return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */ + if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) && + !test_opt(inode->i_sb, DELALLOC)) + return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */ + if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) + return EXT4_INODE_ORDERED_DATA_MODE; /* ordered */ + if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA) + return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */ + else + BUG(); +} + +static inline int ext4_should_journal_data(struct inode *inode) +{ + return ext4_inode_journal_mode(inode) & EXT4_INODE_JOURNAL_DATA_MODE; } static inline int ext4_should_order_data(struct inode *inode) { - if (EXT4_JOURNAL(inode) == NULL) - return 0; - if (!S_ISREG(inode->i_mode)) - return 0; - if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA)) - return 0; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) - return 1; - return 0; + return ext4_inode_journal_mode(inode) & EXT4_INODE_ORDERED_DATA_MODE; } static inline int ext4_should_writeback_data(struct inode *inode) { - if (EXT4_JOURNAL(inode) == NULL) - return 1; - if (!S_ISREG(inode->i_mode)) - return 0; - if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA)) - return 0; - if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA) - return 1; - return 0; + return ext4_inode_journal_mode(inode) & EXT4_INODE_WRITEBACK_DATA_MODE; } /* diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 74f23c292e1..1421938e679 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -44,6 +44,14 @@ #include <trace/events/ext4.h> +/* + * used by extent splitting. + */ +#define EXT4_EXT_MAY_ZEROOUT 0x1 /* safe to zeroout if split fails \ + due to ENOSPC */ +#define EXT4_EXT_MARK_UNINIT1 0x2 /* mark first half uninitialized */ +#define EXT4_EXT_MARK_UNINIT2 0x4 /* mark second half uninitialized */ + static int ext4_split_extent(handle_t *handle, struct inode *inode, struct ext4_ext_path *path, @@ -51,6 +59,13 @@ static int ext4_split_extent(handle_t *handle, int split_flag, int flags); +static int ext4_split_extent_at(handle_t *handle, + struct inode *inode, + struct ext4_ext_path *path, + ext4_lblk_t split, + int split_flag, + int flags); + static int ext4_ext_truncate_extend_restart(handle_t *handle, struct inode *inode, int needed) @@ -300,6 +315,8 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext) ext4_fsblk_t block = ext4_ext_pblock(ext); int len = ext4_ext_get_actual_len(ext); + if (len == 0) + return 0; return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len); } @@ -2308,7 +2325,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, struct ext4_extent *ex; /* the header must be checked already in ext4_ext_remove_space() */ - ext_debug("truncate since %u in leaf\n", start); + ext_debug("truncate since %u in leaf to %u\n", start, end); if (!path[depth].p_hdr) path[depth].p_hdr = ext_block_hdr(path[depth].p_bh); eh = path[depth].p_hdr; @@ -2343,14 +2360,17 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, ext_debug(" border %u:%u\n", a, b); /* If this extent is beyond the end of the hole, skip it */ - if (end <= ex_ee_block) { + if (end < ex_ee_block) { ex--; ex_ee_block = le32_to_cpu(ex->ee_block); ex_ee_len = ext4_ext_get_actual_len(ex); continue; } else if (b != ex_ee_block + ex_ee_len - 1) { - EXT4_ERROR_INODE(inode," bad truncate %u:%u\n", - start, end); + EXT4_ERROR_INODE(inode, + "can not handle truncate %u:%u " + "on extent %u:%u", + start, end, ex_ee_block, + ex_ee_block + ex_ee_len - 1); err = -EIO; goto out; } else if (a != ex_ee_block) { @@ -2482,7 +2502,8 @@ ext4_ext_more_to_rm(struct ext4_ext_path *path) return 1; } -static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start) +static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start, + ext4_lblk_t end) { struct super_block *sb = inode->i_sb; int depth = ext_depth(inode); @@ -2491,7 +2512,7 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start) handle_t *handle; int i, err; - ext_debug("truncate since %u\n", start); + ext_debug("truncate since %u to %u\n", start, end); /* probably first extent we're gonna free will be last in block */ handle = ext4_journal_start(inode, depth + 1); @@ -2504,6 +2525,61 @@ again: trace_ext4_ext_remove_space(inode, start, depth); /* + * Check if we are removing extents inside the extent tree. If that + * is the case, we are going to punch a hole inside the extent tree + * so we have to check whether we need to split the extent covering + * the last block to remove so we can easily remove the part of it + * in ext4_ext_rm_leaf(). + */ + if (end < EXT_MAX_BLOCKS - 1) { + struct ext4_extent *ex; + ext4_lblk_t ee_block; + + /* find extent for this block */ + path = ext4_ext_find_extent(inode, end, NULL); + if (IS_ERR(path)) { + ext4_journal_stop(handle); + return PTR_ERR(path); + } + depth = ext_depth(inode); + ex = path[depth].p_ext; + if (!ex) + goto cont; + + ee_block = le32_to_cpu(ex->ee_block); + + /* + * See if the last block is inside the extent, if so split + * the extent at 'end' block so we can easily remove the + * tail of the first part of the split extent in + * ext4_ext_rm_leaf(). + */ + if (end >= ee_block && + end < ee_block + ext4_ext_get_actual_len(ex) - 1) { + int split_flag = 0; + + if (ext4_ext_is_uninitialized(ex)) + split_flag = EXT4_EXT_MARK_UNINIT1 | + EXT4_EXT_MARK_UNINIT2; + + /* + * Split the extent in two so that 'end' is the last + * block in the first new extent + */ + err = ext4_split_extent_at(handle, inode, path, + end + 1, split_flag, + EXT4_GET_BLOCKS_PRE_IO | + EXT4_GET_BLOCKS_PUNCH_OUT_EXT); + + if (err < 0) + goto out; + } + ext4_ext_drop_refs(path); + kfree(path); + } +cont: + + /* * We start scanning from right side, freeing all the blocks * after i_size and walking into the tree depth-wise. */ @@ -2515,6 +2591,7 @@ again: } path[0].p_depth = depth; path[0].p_hdr = ext_inode_hdr(inode); + if (ext4_ext_check(inode, path[0].p_hdr, depth)) { err = -EIO; goto out; @@ -2526,7 +2603,7 @@ again: /* this is leaf block */ err = ext4_ext_rm_leaf(handle, inode, path, &partial_cluster, start, - EXT_MAX_BLOCKS - 1); + end); /* root level has p_bh == NULL, brelse() eats this */ brelse(path[i].p_bh); path[i].p_bh = NULL; @@ -2651,17 +2728,17 @@ void ext4_ext_init(struct super_block *sb) if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) { #if defined(AGGRESSIVE_TEST) || defined(CHECK_BINSEARCH) || defined(EXTENTS_STATS) - printk(KERN_INFO "EXT4-fs: file extents enabled"); + printk(KERN_INFO "EXT4-fs: file extents enabled" #ifdef AGGRESSIVE_TEST - printk(", aggressive tests"); + ", aggressive tests" #endif #ifdef CHECK_BINSEARCH - printk(", check binsearch"); + ", check binsearch" #endif #ifdef EXTENTS_STATS - printk(", stats"); + ", stats" #endif - printk("\n"); + "\n"); #endif #ifdef EXTENTS_STATS spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock); @@ -2709,14 +2786,6 @@ static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex) } /* - * used by extent splitting. - */ -#define EXT4_EXT_MAY_ZEROOUT 0x1 /* safe to zeroout if split fails \ - due to ENOSPC */ -#define EXT4_EXT_MARK_UNINIT1 0x2 /* mark first half uninitialized */ -#define EXT4_EXT_MARK_UNINIT2 0x4 /* mark second half uninitialized */ - -/* * ext4_split_extent_at() splits an extent at given block. * * @handle: the journal handle @@ -3224,11 +3293,13 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode, depth = ext_depth(inode); eh = path[depth].p_hdr; - if (unlikely(!eh->eh_entries)) { - EXT4_ERROR_INODE(inode, "eh->eh_entries == 0 and " - "EOFBLOCKS_FL set"); - return -EIO; - } + /* + * We're going to remove EOFBLOCKS_FL entirely in future so we + * do not care for this case anymore. Simply remove the flag + * if there are no extents. + */ + if (unlikely(!eh->eh_entries)) + goto out; last_ex = EXT_LAST_EXTENT(eh); /* * We should clear the EOFBLOCKS_FL flag if we are writing the @@ -3252,6 +3323,7 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode, for (i = depth-1; i >= 0; i--) if (path[i].p_idx != EXT_LAST_INDEX(path[i].p_hdr)) return 0; +out: ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS); return ext4_mark_inode_dirty(handle, inode); } @@ -3710,8 +3782,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, int free_on_err = 0, err = 0, depth, ret; unsigned int allocated = 0, offset = 0; unsigned int allocated_clusters = 0; - unsigned int punched_out = 0; - unsigned int result = 0; struct ext4_allocation_request ar; ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio; ext4_lblk_t cluster_offset; @@ -3721,8 +3791,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); /* check in cache */ - if (!(flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) && - ext4_ext_in_cache(inode, map->m_lblk, &newex)) { + if (ext4_ext_in_cache(inode, map->m_lblk, &newex)) { if (!newex.ee_start_lo && !newex.ee_start_hi) { if ((sbi->s_cluster_ratio > 1) && ext4_find_delalloc_cluster(inode, map->m_lblk, 0)) @@ -3790,113 +3859,25 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, /* if found extent covers block, simply return it */ if (in_range(map->m_lblk, ee_block, ee_len)) { - struct ext4_map_blocks punch_map; - ext4_fsblk_t partial_cluster = 0; - newblock = map->m_lblk - ee_block + ee_start; /* number of remaining blocks in the extent */ allocated = ee_len - (map->m_lblk - ee_block); ext_debug("%u fit into %u:%d -> %llu\n", map->m_lblk, ee_block, ee_len, newblock); - if ((flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) == 0) { - /* - * Do not put uninitialized extent - * in the cache - */ - if (!ext4_ext_is_uninitialized(ex)) { - ext4_ext_put_in_cache(inode, ee_block, - ee_len, ee_start); - goto out; - } - ret = ext4_ext_handle_uninitialized_extents( - handle, inode, map, path, flags, - allocated, newblock); - return ret; - } - /* - * Punch out the map length, but only to the - * end of the extent + * Do not put uninitialized extent + * in the cache */ - punched_out = allocated < map->m_len ? - allocated : map->m_len; - - /* - * Sense extents need to be converted to - * uninitialized, they must fit in an - * uninitialized extent - */ - if (punched_out > EXT_UNINIT_MAX_LEN) - punched_out = EXT_UNINIT_MAX_LEN; - - punch_map.m_lblk = map->m_lblk; - punch_map.m_pblk = newblock; - punch_map.m_len = punched_out; - punch_map.m_flags = 0; - - /* Check to see if the extent needs to be split */ - if (punch_map.m_len != ee_len || - punch_map.m_lblk != ee_block) { - - ret = ext4_split_extent(handle, inode, - path, &punch_map, 0, - EXT4_GET_BLOCKS_PUNCH_OUT_EXT | - EXT4_GET_BLOCKS_PRE_IO); - - if (ret < 0) { - err = ret; - goto out2; - } - /* - * find extent for the block at - * the start of the hole - */ - ext4_ext_drop_refs(path); - kfree(path); - - path = ext4_ext_find_extent(inode, - map->m_lblk, NULL); - if (IS_ERR(path)) { - err = PTR_ERR(path); - path = NULL; - goto out2; - } - - depth = ext_depth(inode); - ex = path[depth].p_ext; - ee_len = ext4_ext_get_actual_len(ex); - ee_block = le32_to_cpu(ex->ee_block); - ee_start = ext4_ext_pblock(ex); - - } - - ext4_ext_mark_uninitialized(ex); - - ext4_ext_invalidate_cache(inode); - - err = ext4_ext_rm_leaf(handle, inode, path, - &partial_cluster, map->m_lblk, - map->m_lblk + punched_out); - - if (!err && path->p_hdr->eh_entries == 0) { - /* - * Punch hole freed all of this sub tree, - * so we need to correct eh_depth - */ - err = ext4_ext_get_access(handle, inode, path); - if (err == 0) { - ext_inode_hdr(inode)->eh_depth = 0; - ext_inode_hdr(inode)->eh_max = - cpu_to_le16(ext4_ext_space_root( - inode, 0)); - - err = ext4_ext_dirty( - handle, inode, path); - } + if (!ext4_ext_is_uninitialized(ex)) { + ext4_ext_put_in_cache(inode, ee_block, + ee_len, ee_start); + goto out; } - - goto out2; + ret = ext4_ext_handle_uninitialized_extents( + handle, inode, map, path, flags, + allocated, newblock); + return ret; } } @@ -4165,13 +4146,11 @@ out2: ext4_ext_drop_refs(path); kfree(path); } - result = (flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) ? - punched_out : allocated; trace_ext4_ext_map_blocks_exit(inode, map->m_lblk, - newblock, map->m_len, err ? err : result); + newblock, map->m_len, err ? err : allocated); - return err ? err : result; + return err ? err : allocated; } void ext4_ext_truncate(struct inode *inode) @@ -4228,7 +4207,7 @@ void ext4_ext_truncate(struct inode *inode) last_block = (inode->i_size + sb->s_blocksize - 1) >> EXT4_BLOCK_SIZE_BITS(sb); - err = ext4_ext_remove_space(inode, last_block); + err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1); /* In a multi-transaction truncate, we only make the final * transaction synchronous. @@ -4436,10 +4415,11 @@ int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset, EXT4_GET_BLOCKS_IO_CONVERT_EXT); if (ret <= 0) { WARN_ON(ret <= 0); - printk(KERN_ERR "%s: ext4_ext_map_blocks " - "returned error inode#%lu, block=%u, " - "max_blocks=%u", __func__, - inode->i_ino, map.m_lblk, map.m_len); + ext4_msg(inode->i_sb, KERN_ERR, + "%s:%d: inode #%lu: block %u: len %u: " + "ext4_ext_map_blocks returned %d", + __func__, __LINE__, inode->i_ino, map.m_lblk, + map.m_len, ret); } ext4_mark_inode_dirty(handle, inode); ret2 = ext4_journal_stop(handle); @@ -4705,14 +4685,12 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length) { struct inode *inode = file->f_path.dentry->d_inode; struct super_block *sb = inode->i_sb; - struct ext4_ext_cache cache_ex; - ext4_lblk_t first_block, last_block, num_blocks, iblock, max_blocks; + ext4_lblk_t first_block, stop_block; struct address_space *mapping = inode->i_mapping; - struct ext4_map_blocks map; handle_t *handle; loff_t first_page, last_page, page_len; loff_t first_page_offset, last_page_offset; - int ret, credits, blocks_released, err = 0; + int credits, err = 0; /* No need to punch hole beyond i_size */ if (offset >= inode->i_size) @@ -4728,10 +4706,6 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length) offset; } - first_block = (offset + sb->s_blocksize - 1) >> - EXT4_BLOCK_SIZE_BITS(sb); - last_block = (offset + length) >> EXT4_BLOCK_SIZE_BITS(sb); - first_page = (offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; last_page = (offset + length) >> PAGE_CACHE_SHIFT; @@ -4810,7 +4784,6 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length) } } - /* * If i_size is contained in the last page, we need to * unmap and zero the partial page after i_size @@ -4830,73 +4803,22 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length) } } + first_block = (offset + sb->s_blocksize - 1) >> + EXT4_BLOCK_SIZE_BITS(sb); + stop_block = (offset + length) >> EXT4_BLOCK_SIZE_BITS(sb); + /* If there are no blocks to remove, return now */ - if (first_block >= last_block) + if (first_block >= stop_block) goto out; down_write(&EXT4_I(inode)->i_data_sem); ext4_ext_invalidate_cache(inode); ext4_discard_preallocations(inode); - /* - * Loop over all the blocks and identify blocks - * that need to be punched out - */ - iblock = first_block; - blocks_released = 0; - while (iblock < last_block) { - max_blocks = last_block - iblock; - num_blocks = 1; - memset(&map, 0, sizeof(map)); - map.m_lblk = iblock; - map.m_len = max_blocks; - ret = ext4_ext_map_blocks(handle, inode, &map, - EXT4_GET_BLOCKS_PUNCH_OUT_EXT); - - if (ret > 0) { - blocks_released += ret; - num_blocks = ret; - } else if (ret == 0) { - /* - * If map blocks could not find the block, - * then it is in a hole. If the hole was - * not already cached, then map blocks should - * put it in the cache. So we can get the hole - * out of the cache - */ - memset(&cache_ex, 0, sizeof(cache_ex)); - if ((ext4_ext_check_cache(inode, iblock, &cache_ex)) && - !cache_ex.ec_start) { - - /* The hole is cached */ - num_blocks = cache_ex.ec_block + - cache_ex.ec_len - iblock; + err = ext4_ext_remove_space(inode, first_block, stop_block - 1); - } else { - /* The block could not be identified */ - err = -EIO; - break; - } - } else { - /* Map blocks error */ - err = ret; - break; - } - - if (num_blocks == 0) { - /* This condition should never happen */ - ext_debug("Block lookup failed"); - err = -EIO; - break; - } - - iblock += num_blocks; - } - - if (blocks_released > 0) { - ext4_ext_invalidate_cache(inode); - ext4_discard_preallocations(inode); - } + ext4_ext_invalidate_cache(inode); + ext4_discard_preallocations(inode); if (IS_SYNC(inode)) ext4_handle_sync(handle); diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 00a2cb753ef..bb6c7d81131 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -89,6 +89,7 @@ int ext4_flush_completed_IO(struct inode *inode) io = list_entry(ei->i_completed_io_list.next, ext4_io_end_t, list); list_del_init(&io->list); + io->flag |= EXT4_IO_END_IN_FSYNC; /* * Calling ext4_end_io_nolock() to convert completed * IO to written. @@ -108,6 +109,7 @@ int ext4_flush_completed_IO(struct inode *inode) if (ret < 0) ret2 = ret; spin_lock_irqsave(&ei->i_completed_io_lock, flags); + io->flag &= ~EXT4_IO_END_IN_FSYNC; } spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); return (ret2 < 0) ? ret2 : 0; diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 25d8c9781ad..409c2ee7750 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -92,6 +92,16 @@ static unsigned ext4_init_inode_bitmap(struct super_block *sb, return EXT4_INODES_PER_GROUP(sb); } +void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate) +{ + if (uptodate) { + set_buffer_uptodate(bh); + set_bitmap_uptodate(bh); + } + unlock_buffer(bh); + put_bh(bh); +} + /* * Read the inode allocation bitmap for a given block_group, reading * into the specified slot in the superblock's bitmap cache. @@ -147,18 +157,18 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group) return bh; } /* - * submit the buffer_head for read. We can - * safely mark the bitmap as uptodate now. - * We do it here so the bitmap uptodate bit - * get set with buffer lock held. + * submit the buffer_head for reading */ trace_ext4_load_inode_bitmap(sb, block_group); - set_bitmap_uptodate(bh); - if (bh_submit_read(bh) < 0) { + bh->b_end_io = ext4_end_bitmap_read; + get_bh(bh); + submit_bh(READ, bh); + wait_on_buffer(bh); + if (!buffer_uptodate(bh)) { put_bh(bh); ext4_error(sb, "Cannot read inode bitmap - " - "block_group = %u, inode_bitmap = %llu", - block_group, bitmap_blk); + "block_group = %u, inode_bitmap = %llu", + block_group, bitmap_blk); return NULL; } return bh; @@ -194,19 +204,20 @@ void ext4_free_inode(handle_t *handle, struct inode *inode) struct ext4_sb_info *sbi; int fatal = 0, err, count, cleared; - if (atomic_read(&inode->i_count) > 1) { - printk(KERN_ERR "ext4_free_inode: inode has count=%d\n", - atomic_read(&inode->i_count)); + if (!sb) { + printk(KERN_ERR "EXT4-fs: %s:%d: inode on " + "nonexistent device\n", __func__, __LINE__); return; } - if (inode->i_nlink) { - printk(KERN_ERR "ext4_free_inode: inode has nlink=%d\n", - inode->i_nlink); + if (atomic_read(&inode->i_count) > 1) { + ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: count=%d", + __func__, __LINE__, inode->i_ino, + atomic_read(&inode->i_count)); return; } - if (!sb) { - printk(KERN_ERR "ext4_free_inode: inode on " - "nonexistent device\n"); + if (inode->i_nlink) { + ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: nlink=%d\n", + __func__, __LINE__, inode->i_ino, inode->i_nlink); return; } sbi = EXT4_SB(sb); @@ -593,94 +604,6 @@ static int find_group_other(struct super_block *sb, struct inode *parent, } /* - * claim the inode from the inode bitmap. If the group - * is uninit we need to take the groups's ext4_group_lock - * and clear the uninit flag. The inode bitmap update - * and group desc uninit flag clear should be done - * after holding ext4_group_lock so that ext4_read_inode_bitmap - * doesn't race with the ext4_claim_inode - */ -static int ext4_claim_inode(struct super_block *sb, - struct buffer_head *inode_bitmap_bh, - unsigned long ino, ext4_group_t group, umode_t mode) -{ - int free = 0, retval = 0, count; - struct ext4_sb_info *sbi = EXT4_SB(sb); - struct ext4_group_info *grp = ext4_get_group_info(sb, group); - struct ext4_group_desc *gdp = ext4_get_group_desc(sb, group, NULL); - - /* - * We have to be sure that new inode allocation does not race with - * inode table initialization, because otherwise we may end up - * allocating and writing new inode right before sb_issue_zeroout - * takes place and overwriting our new inode with zeroes. So we - * take alloc_sem to prevent it. - */ - down_read(&grp->alloc_sem); - ext4_lock_group(sb, group); - if (ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data)) { - /* not a free inode */ - retval = 1; - goto err_ret; - } - ino++; - if ((group == 0 && ino < EXT4_FIRST_INO(sb)) || - ino > EXT4_INODES_PER_GROUP(sb)) { - ext4_unlock_group(sb, group); - up_read(&grp->alloc_sem); - ext4_error(sb, "reserved inode or inode > inodes count - " - "block_group = %u, inode=%lu", group, - ino + group * EXT4_INODES_PER_GROUP(sb)); - return 1; - } - /* If we didn't allocate from within the initialized part of the inode - * table then we need to initialize up to this inode. */ - if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { - - if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) { - gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT); - /* When marking the block group with - * ~EXT4_BG_INODE_UNINIT we don't want to depend - * on the value of bg_itable_unused even though - * mke2fs could have initialized the same for us. - * Instead we calculated the value below - */ - - free = 0; - } else { - free = EXT4_INODES_PER_GROUP(sb) - - ext4_itable_unused_count(sb, gdp); - } - - /* - * Check the relative inode number against the last used - * relative inode number in this group. if it is greater - * we need to update the bg_itable_unused count - * - */ - if (ino > free) - ext4_itable_unused_set(sb, gdp, - (EXT4_INODES_PER_GROUP(sb) - ino)); - } - count = ext4_free_inodes_count(sb, gdp) - 1; - ext4_free_inodes_set(sb, gdp, count); - if (S_ISDIR(mode)) { - count = ext4_used_dirs_count(sb, gdp) + 1; - ext4_used_dirs_set(sb, gdp, count); - if (sbi->s_log_groups_per_flex) { - ext4_group_t f = ext4_flex_group(sbi, group); - - atomic_inc(&sbi->s_flex_groups[f].used_dirs); - } - } - gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp); -err_ret: - ext4_unlock_group(sb, group); - up_read(&grp->alloc_sem); - return retval; -} - -/* * There are two policies for allocating an inode. If the new inode is * a directory, then a forward search is made for a block group with both * free space and a low directory-to-inode ratio; if that fails, then of @@ -741,6 +664,11 @@ got_group: if (ret2 == -1) goto out; + /* + * Normally we will only go through one pass of this loop, + * unless we get unlucky and it turns out the group we selected + * had its last inode grabbed by someone else. + */ for (i = 0; i < ngroups; i++, ino = 0) { err = -EIO; @@ -757,51 +685,24 @@ repeat_in_this_group: ino = ext4_find_next_zero_bit((unsigned long *) inode_bitmap_bh->b_data, EXT4_INODES_PER_GROUP(sb), ino); - - if (ino < EXT4_INODES_PER_GROUP(sb)) { - - BUFFER_TRACE(inode_bitmap_bh, "get_write_access"); - err = ext4_journal_get_write_access(handle, - inode_bitmap_bh); - if (err) - goto fail; - - BUFFER_TRACE(group_desc_bh, "get_write_access"); - err = ext4_journal_get_write_access(handle, - group_desc_bh); - if (err) - goto fail; - if (!ext4_claim_inode(sb, inode_bitmap_bh, - ino, group, mode)) { - /* we won it */ - BUFFER_TRACE(inode_bitmap_bh, - "call ext4_handle_dirty_metadata"); - err = ext4_handle_dirty_metadata(handle, - NULL, - inode_bitmap_bh); - if (err) - goto fail; - /* zero bit is inode number 1*/ - ino++; - goto got; - } - /* we lost it */ - ext4_handle_release_buffer(handle, inode_bitmap_bh); - ext4_handle_release_buffer(handle, group_desc_bh); - - if (++ino < EXT4_INODES_PER_GROUP(sb)) - goto repeat_in_this_group; + if (ino >= EXT4_INODES_PER_GROUP(sb)) { + if (++group == ngroups) + group = 0; + continue; } - - /* - * This case is possible in concurrent environment. It is very - * rare. We cannot repeat the find_group_xxx() call because - * that will simply return the same blockgroup, because the - * group descriptor metadata has not yet been updated. - * So we just go onto the next blockgroup. - */ - if (++group == ngroups) - group = 0; + if (group == 0 && (ino+1) < EXT4_FIRST_INO(sb)) { + ext4_error(sb, "reserved inode found cleared - " + "inode=%lu", ino + 1); + continue; + } + ext4_lock_group(sb, group); + ret2 = ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data); + ext4_unlock_group(sb, group); + ino++; /* the inode bitmap is zero-based */ + if (!ret2) + goto got; /* we grabbed the inode! */ + if (ino < EXT4_INODES_PER_GROUP(sb)) + goto repeat_in_this_group; } err = -ENOSPC; goto out; @@ -838,6 +739,59 @@ got: if (err) goto fail; } + + BUFFER_TRACE(inode_bitmap_bh, "get_write_access"); + err = ext4_journal_get_write_access(handle, inode_bitmap_bh); + if (err) + goto fail; + + BUFFER_TRACE(group_desc_bh, "get_write_access"); + err = ext4_journal_get_write_access(handle, group_desc_bh); + if (err) + goto fail; + + /* Update the relevant bg descriptor fields */ + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + int free; + struct ext4_group_info *grp = ext4_get_group_info(sb, group); + + down_read(&grp->alloc_sem); /* protect vs itable lazyinit */ + ext4_lock_group(sb, group); /* while we modify the bg desc */ + free = EXT4_INODES_PER_GROUP(sb) - + ext4_itable_unused_count(sb, gdp); + if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) { + gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT); + free = 0; + } + /* + * Check the relative inode number against the last used + * relative inode number in this group. if it is greater + * we need to update the bg_itable_unused count + */ + if (ino > free) + ext4_itable_unused_set(sb, gdp, + (EXT4_INODES_PER_GROUP(sb) - ino)); + up_read(&grp->alloc_sem); + } + ext4_free_inodes_set(sb, gdp, ext4_free_inodes_count(sb, gdp) - 1); + if (S_ISDIR(mode)) { + ext4_used_dirs_set(sb, gdp, ext4_used_dirs_count(sb, gdp) + 1); + if (sbi->s_log_groups_per_flex) { + ext4_group_t f = ext4_flex_group(sbi, group); + + atomic_inc(&sbi->s_flex_groups[f].used_dirs); + } + } + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp); + ext4_unlock_group(sb, group); + } + + BUFFER_TRACE(inode_bitmap_bh, "call ext4_handle_dirty_metadata"); + err = ext4_handle_dirty_metadata(handle, NULL, inode_bitmap_bh); + if (err) + goto fail; + BUFFER_TRACE(group_desc_bh, "call ext4_handle_dirty_metadata"); err = ext4_handle_dirty_metadata(handle, NULL, group_desc_bh); if (err) @@ -1101,7 +1055,7 @@ unsigned long ext4_count_dirs(struct super_block * sb) * where it is called from on active part of filesystem is ext4lazyinit * thread, so we do not need any special locks, however we have to prevent * inode allocation from the current group, so we take alloc_sem lock, to - * block ext4_claim_inode until we are finished. + * block ext4_new_inode() until we are finished. */ int ext4_init_inode_table(struct super_block *sb, ext4_group_t group, int barrier) @@ -1149,9 +1103,9 @@ int ext4_init_inode_table(struct super_block *sb, ext4_group_t group, sbi->s_inodes_per_block); if ((used_blks < 0) || (used_blks > sbi->s_itb_per_group)) { - ext4_error(sb, "Something is wrong with group %u\n" - "Used itable blocks: %d" - "itable unused count: %u\n", + ext4_error(sb, "Something is wrong with group %u: " + "used itable blocks: %d; " + "itable unused count: %u", group, used_blks, ext4_itable_unused_count(sb, gdp)); ret = 1; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index feaa82fe629..c77b0bd2c71 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -272,7 +272,7 @@ void ext4_da_update_reserve_space(struct inode *inode, trace_ext4_da_update_reserve_space(inode, used, quota_claim); if (unlikely(used > ei->i_reserved_data_blocks)) { ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d " - "with only %d reserved data blocks\n", + "with only %d reserved data blocks", __func__, inode->i_ino, used, ei->i_reserved_data_blocks); WARN_ON(1); @@ -1165,7 +1165,7 @@ static void ext4_da_release_space(struct inode *inode, int to_free) */ ext4_msg(inode->i_sb, KERN_NOTICE, "ext4_da_release_space: " "ino %lu, to_free %d with only %d reserved " - "data blocks\n", inode->i_ino, to_free, + "data blocks", inode->i_ino, to_free, ei->i_reserved_data_blocks); WARN_ON(1); to_free = ei->i_reserved_data_blocks; @@ -1428,20 +1428,22 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd) static void ext4_print_free_blocks(struct inode *inode) { struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - printk(KERN_CRIT "Total free blocks count %lld\n", + struct super_block *sb = inode->i_sb; + + ext4_msg(sb, KERN_CRIT, "Total free blocks count %lld", EXT4_C2B(EXT4_SB(inode->i_sb), ext4_count_free_clusters(inode->i_sb))); - printk(KERN_CRIT "Free/Dirty block details\n"); - printk(KERN_CRIT "free_blocks=%lld\n", + ext4_msg(sb, KERN_CRIT, "Free/Dirty block details"); + ext4_msg(sb, KERN_CRIT, "free_blocks=%lld", (long long) EXT4_C2B(EXT4_SB(inode->i_sb), percpu_counter_sum(&sbi->s_freeclusters_counter))); - printk(KERN_CRIT "dirty_blocks=%lld\n", + ext4_msg(sb, KERN_CRIT, "dirty_blocks=%lld", (long long) EXT4_C2B(EXT4_SB(inode->i_sb), percpu_counter_sum(&sbi->s_dirtyclusters_counter))); - printk(KERN_CRIT "Block reservation details\n"); - printk(KERN_CRIT "i_reserved_data_blocks=%u\n", - EXT4_I(inode)->i_reserved_data_blocks); - printk(KERN_CRIT "i_reserved_meta_blocks=%u\n", + ext4_msg(sb, KERN_CRIT, "Block reservation details"); + ext4_msg(sb, KERN_CRIT, "i_reserved_data_blocks=%u", + EXT4_I(inode)->i_reserved_data_blocks); + ext4_msg(sb, KERN_CRIT, "i_reserved_meta_blocks=%u", EXT4_I(inode)->i_reserved_meta_blocks); return; } @@ -2482,13 +2484,14 @@ static int ext4_da_write_end(struct file *file, int write_mode = (int)(unsigned long)fsdata; if (write_mode == FALL_BACK_TO_NONDELALLOC) { - if (ext4_should_order_data(inode)) { + switch (ext4_inode_journal_mode(inode)) { + case EXT4_INODE_ORDERED_DATA_MODE: return ext4_ordered_write_end(file, mapping, pos, len, copied, page, fsdata); - } else if (ext4_should_writeback_data(inode)) { + case EXT4_INODE_WRITEBACK_DATA_MODE: return ext4_writeback_write_end(file, mapping, pos, len, copied, page, fsdata); - } else { + default: BUG(); } } @@ -2763,7 +2766,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset, goto out; ext_debug("ext4_end_io_dio(): io_end 0x%p " - "for inode %lu, iocb 0x%p, offset %llu, size %llu\n", + "for inode %lu, iocb 0x%p, offset %llu, size %zd\n", iocb->private, io_end->inode->i_ino, iocb, offset, size); @@ -2795,9 +2798,6 @@ out: /* queue the work to convert unwritten extents to written */ queue_work(wq, &io_end->work); - - /* XXX: probably should move into the real I/O completion handler */ - inode_dio_done(inode); } static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate) @@ -2811,8 +2811,9 @@ static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate) goto out; if (!(io_end->inode->i_sb->s_flags & MS_ACTIVE)) { - printk("sb umounted, discard end_io request for inode %lu\n", - io_end->inode->i_ino); + ext4_msg(io_end->inode->i_sb, KERN_INFO, + "sb umounted, discard end_io request for inode %lu", + io_end->inode->i_ino); ext4_free_io_end(io_end); goto out; } @@ -2921,9 +2922,12 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, iocb->private = NULL; EXT4_I(inode)->cur_aio_dio = NULL; if (!is_sync_kiocb(iocb)) { - iocb->private = ext4_init_io_end(inode, GFP_NOFS); - if (!iocb->private) + ext4_io_end_t *io_end = + ext4_init_io_end(inode, GFP_NOFS); + if (!io_end) return -ENOMEM; + io_end->flag |= EXT4_IO_END_DIRECT; + iocb->private = io_end; /* * we save the io structure for current async * direct IO, so that later ext4_map_blocks() @@ -2940,7 +2944,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb, ext4_get_block_write, ext4_end_io_dio, NULL, - DIO_LOCKING | DIO_SKIP_HOLES); + DIO_LOCKING); if (iocb->private) EXT4_I(inode)->cur_aio_dio = NULL; /* @@ -3086,18 +3090,25 @@ static const struct address_space_operations ext4_da_aops = { void ext4_set_aops(struct inode *inode) { - if (ext4_should_order_data(inode) && - test_opt(inode->i_sb, DELALLOC)) - inode->i_mapping->a_ops = &ext4_da_aops; - else if (ext4_should_order_data(inode)) - inode->i_mapping->a_ops = &ext4_ordered_aops; - else if (ext4_should_writeback_data(inode) && - test_opt(inode->i_sb, DELALLOC)) - inode->i_mapping->a_ops = &ext4_da_aops; - else if (ext4_should_writeback_data(inode)) - inode->i_mapping->a_ops = &ext4_writeback_aops; - else + switch (ext4_inode_journal_mode(inode)) { + case EXT4_INODE_ORDERED_DATA_MODE: + if (test_opt(inode->i_sb, DELALLOC)) + inode->i_mapping->a_ops = &ext4_da_aops; + else + inode->i_mapping->a_ops = &ext4_ordered_aops; + break; + case EXT4_INODE_WRITEBACK_DATA_MODE: + if (test_opt(inode->i_sb, DELALLOC)) + inode->i_mapping->a_ops = &ext4_da_aops; + else + inode->i_mapping->a_ops = &ext4_writeback_aops; + break; + case EXT4_INODE_JOURNAL_DATA_MODE: inode->i_mapping->a_ops = &ext4_journalled_aops; + break; + default: + BUG(); + } } @@ -3329,16 +3340,16 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length) { struct inode *inode = file->f_path.dentry->d_inode; if (!S_ISREG(inode->i_mode)) - return -ENOTSUPP; + return -EOPNOTSUPP; if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) { /* TODO: Add support for non extent hole punching */ - return -ENOTSUPP; + return -EOPNOTSUPP; } if (EXT4_SB(inode->i_sb)->s_cluster_ratio > 1) { /* TODO: Add support for bigalloc file systems */ - return -ENOTSUPP; + return -EOPNOTSUPP; } return ext4_ext_punch_hole(file, offset, length); @@ -3924,10 +3935,8 @@ static int ext4_do_update_inode(handle_t *handle, ext4_update_dynamic_rev(sb); EXT4_SET_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_LARGE_FILE); - sb->s_dirt = 1; ext4_handle_sync(handle); - err = ext4_handle_dirty_metadata(handle, NULL, - EXT4_SB(sb)->s_sbh); + err = ext4_handle_dirty_super(handle, sb); } } raw_inode->i_generation = cpu_to_le32(inode->i_generation); @@ -4152,11 +4161,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) } if (attr->ia_valid & ATTR_SIZE) { - if (attr->ia_size != i_size_read(inode)) { + if (attr->ia_size != i_size_read(inode)) truncate_setsize(inode, attr->ia_size); - ext4_truncate(inode); - } else if (ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS)) - ext4_truncate(inode); + ext4_truncate(inode); } if (!rc) { @@ -4314,7 +4321,7 @@ int ext4_mark_iloc_dirty(handle_t *handle, { int err = 0; - if (test_opt(inode->i_sb, I_VERSION)) + if (IS_I_VERSION(inode)) inode_inc_iversion(inode); /* the do_update_inode consumes one bh->b_count */ diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index cb990b21c69..99ab428bcfa 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -21,6 +21,7 @@ * mballoc.c contains the multiblocks allocation routines */ +#include "ext4_jbd2.h" #include "mballoc.h" #include <linux/debugfs.h> #include <linux/slab.h> @@ -339,7 +340,7 @@ */ static struct kmem_cache *ext4_pspace_cachep; static struct kmem_cache *ext4_ac_cachep; -static struct kmem_cache *ext4_free_ext_cachep; +static struct kmem_cache *ext4_free_data_cachep; /* We create slab caches for groupinfo data structures based on the * superblock block size. There will be one per mounted filesystem for @@ -357,7 +358,8 @@ static void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap, ext4_group_t group); static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap, ext4_group_t group); -static void release_blocks_on_commit(journal_t *journal, transaction_t *txn); +static void ext4_free_data_callback(struct super_block *sb, + struct ext4_journal_cb_entry *jce, int rc); static inline void *mb_correct_addr_and_bit(int *bit, void *addr) { @@ -425,7 +427,7 @@ static void *mb_find_buddy(struct ext4_buddy *e4b, int order, int *max) { char *bb; - BUG_ON(EXT4_MB_BITMAP(e4b) == EXT4_MB_BUDDY(e4b)); + BUG_ON(e4b->bd_bitmap == e4b->bd_buddy); BUG_ON(max == NULL); if (order > e4b->bd_blkbits + 1) { @@ -436,10 +438,10 @@ static void *mb_find_buddy(struct ext4_buddy *e4b, int order, int *max) /* at order 0 we see each particular block */ if (order == 0) { *max = 1 << (e4b->bd_blkbits + 3); - return EXT4_MB_BITMAP(e4b); + return e4b->bd_bitmap; } - bb = EXT4_MB_BUDDY(e4b) + EXT4_SB(e4b->bd_sb)->s_mb_offsets[order]; + bb = e4b->bd_buddy + EXT4_SB(e4b->bd_sb)->s_mb_offsets[order]; *max = EXT4_SB(e4b->bd_sb)->s_mb_maxs[order]; return bb; @@ -588,7 +590,7 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file, for (j = 0; j < (1 << order); j++) { k = (i * (1 << order)) + j; MB_CHECK_ASSERT( - !mb_test_bit(k, EXT4_MB_BITMAP(e4b))); + !mb_test_bit(k, e4b->bd_bitmap)); } count++; } @@ -782,7 +784,7 @@ static int ext4_mb_init_cache(struct page *page, char *incore) int groups_per_page; int err = 0; int i; - ext4_group_t first_group; + ext4_group_t first_group, group; int first_block; struct super_block *sb; struct buffer_head *bhs; @@ -806,24 +808,23 @@ static int ext4_mb_init_cache(struct page *page, char *incore) /* allocate buffer_heads to read bitmaps */ if (groups_per_page > 1) { - err = -ENOMEM; i = sizeof(struct buffer_head *) * groups_per_page; bh = kzalloc(i, GFP_NOFS); - if (bh == NULL) + if (bh == NULL) { + err = -ENOMEM; goto out; + } } else bh = &bhs; first_group = page->index * blocks_per_page / 2; /* read all groups the page covers into the cache */ - for (i = 0; i < groups_per_page; i++) { - struct ext4_group_desc *desc; - - if (first_group + i >= ngroups) + for (i = 0, group = first_group; i < groups_per_page; i++, group++) { + if (group >= ngroups) break; - grinfo = ext4_get_group_info(sb, first_group + i); + grinfo = ext4_get_group_info(sb, group); /* * If page is uptodate then we came here after online resize * which added some new uninitialized group info structs, so @@ -834,69 +835,21 @@ static int ext4_mb_init_cache(struct page *page, char *incore) bh[i] = NULL; continue; } - - err = -EIO; - desc = ext4_get_group_desc(sb, first_group + i, NULL); - if (desc == NULL) - goto out; - - err = -ENOMEM; - bh[i] = sb_getblk(sb, ext4_block_bitmap(sb, desc)); - if (bh[i] == NULL) + if (!(bh[i] = ext4_read_block_bitmap_nowait(sb, group))) { + err = -ENOMEM; goto out; - - if (bitmap_uptodate(bh[i])) - continue; - - lock_buffer(bh[i]); - if (bitmap_uptodate(bh[i])) { - unlock_buffer(bh[i]); - continue; - } - ext4_lock_group(sb, first_group + i); - if (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) { - ext4_init_block_bitmap(sb, bh[i], - first_group + i, desc); - set_bitmap_uptodate(bh[i]); - set_buffer_uptodate(bh[i]); - ext4_unlock_group(sb, first_group + i); - unlock_buffer(bh[i]); - continue; } - ext4_unlock_group(sb, first_group + i); - if (buffer_uptodate(bh[i])) { - /* - * if not uninit if bh is uptodate, - * bitmap is also uptodate - */ - set_bitmap_uptodate(bh[i]); - unlock_buffer(bh[i]); - continue; - } - get_bh(bh[i]); - /* - * submit the buffer_head for read. We can - * safely mark the bitmap as uptodate now. - * We do it here so the bitmap uptodate bit - * get set with buffer lock held. - */ - set_bitmap_uptodate(bh[i]); - bh[i]->b_end_io = end_buffer_read_sync; - submit_bh(READ, bh[i]); - mb_debug(1, "read bitmap for group %u\n", first_group + i); + mb_debug(1, "read bitmap for group %u\n", group); } /* wait for I/O completion */ - for (i = 0; i < groups_per_page; i++) - if (bh[i]) - wait_on_buffer(bh[i]); - - err = -EIO; - for (i = 0; i < groups_per_page; i++) - if (bh[i] && !buffer_uptodate(bh[i])) + for (i = 0, group = first_group; i < groups_per_page; i++, group++) { + if (bh[i] && ext4_wait_block_bitmap(sb, group, bh[i])) { + err = -EIO; goto out; + } + } - err = 0; first_block = page->index * blocks_per_page; for (i = 0; i < blocks_per_page; i++) { int group; @@ -1250,10 +1203,10 @@ static int mb_find_order_for_block(struct ext4_buddy *e4b, int block) int order = 1; void *bb; - BUG_ON(EXT4_MB_BITMAP(e4b) == EXT4_MB_BUDDY(e4b)); + BUG_ON(e4b->bd_bitmap == e4b->bd_buddy); BUG_ON(block >= (1 << (e4b->bd_blkbits + 3))); - bb = EXT4_MB_BUDDY(e4b); + bb = e4b->bd_buddy; while (order <= e4b->bd_blkbits + 1) { block = block >> 1; if (!mb_test_bit(block, bb)) { @@ -1323,9 +1276,9 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, /* let's maintain fragments counter */ if (first != 0) - block = !mb_test_bit(first - 1, EXT4_MB_BITMAP(e4b)); + block = !mb_test_bit(first - 1, e4b->bd_bitmap); if (first + count < EXT4_SB(sb)->s_mb_maxs[0]) - max = !mb_test_bit(first + count, EXT4_MB_BITMAP(e4b)); + max = !mb_test_bit(first + count, e4b->bd_bitmap); if (block && max) e4b->bd_info->bb_fragments--; else if (!block && !max) @@ -1336,7 +1289,7 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, block = first++; order = 0; - if (!mb_test_bit(block, EXT4_MB_BITMAP(e4b))) { + if (!mb_test_bit(block, e4b->bd_bitmap)) { ext4_fsblk_t blocknr; blocknr = ext4_group_first_block_no(sb, e4b->bd_group); @@ -1347,7 +1300,7 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, "freeing already freed block " "(bit %u)", block); } - mb_clear_bit(block, EXT4_MB_BITMAP(e4b)); + mb_clear_bit(block, e4b->bd_bitmap); e4b->bd_info->bb_counters[order]++; /* start of the buddy */ @@ -1429,7 +1382,7 @@ static int mb_find_extent(struct ext4_buddy *e4b, int order, int block, break; next = (block + 1) * (1 << order); - if (mb_test_bit(next, EXT4_MB_BITMAP(e4b))) + if (mb_test_bit(next, e4b->bd_bitmap)) break; order = mb_find_order_for_block(e4b, next); @@ -1466,9 +1419,9 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex) /* let's maintain fragments counter */ if (start != 0) - mlen = !mb_test_bit(start - 1, EXT4_MB_BITMAP(e4b)); + mlen = !mb_test_bit(start - 1, e4b->bd_bitmap); if (start + len < EXT4_SB(e4b->bd_sb)->s_mb_maxs[0]) - max = !mb_test_bit(start + len, EXT4_MB_BITMAP(e4b)); + max = !mb_test_bit(start + len, e4b->bd_bitmap); if (mlen && max) e4b->bd_info->bb_fragments++; else if (!mlen && !max) @@ -1511,7 +1464,7 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex) } mb_set_largest_free_order(e4b->bd_sb, e4b->bd_info); - ext4_set_bits(EXT4_MB_BITMAP(e4b), ex->fe_start, len0); + ext4_set_bits(e4b->bd_bitmap, ex->fe_start, len0); mb_check_buddy(e4b); return ret; @@ -1810,7 +1763,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, struct ext4_buddy *e4b) { struct super_block *sb = ac->ac_sb; - void *bitmap = EXT4_MB_BITMAP(e4b); + void *bitmap = e4b->bd_bitmap; struct ext4_free_extent ex; int i; int free; @@ -1870,7 +1823,7 @@ void ext4_mb_scan_aligned(struct ext4_allocation_context *ac, { struct super_block *sb = ac->ac_sb; struct ext4_sb_info *sbi = EXT4_SB(sb); - void *bitmap = EXT4_MB_BITMAP(e4b); + void *bitmap = e4b->bd_bitmap; struct ext4_free_extent ex; ext4_fsblk_t first_group_block; ext4_fsblk_t a; @@ -2224,7 +2177,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group, EXT4_DESC_PER_BLOCK_BITS(sb); meta_group_info = kmalloc(metalen, GFP_KERNEL); if (meta_group_info == NULL) { - ext4_msg(sb, KERN_ERR, "EXT4-fs: can't allocate mem " + ext4_msg(sb, KERN_ERR, "can't allocate mem " "for a buddy group"); goto exit_meta_group_info; } @@ -2238,7 +2191,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group, meta_group_info[i] = kmem_cache_alloc(cachep, GFP_KERNEL); if (meta_group_info[i] == NULL) { - ext4_msg(sb, KERN_ERR, "EXT4-fs: can't allocate buddy mem"); + ext4_msg(sb, KERN_ERR, "can't allocate buddy mem"); goto exit_group_info; } memset(meta_group_info[i], 0, kmem_cache_size(cachep)); @@ -2522,9 +2475,6 @@ int ext4_mb_init(struct super_block *sb, int needs_recovery) proc_create_data("mb_groups", S_IRUGO, sbi->s_proc, &ext4_mb_seq_groups_fops, sb); - if (sbi->s_journal) - sbi->s_journal->j_commit_callback = release_blocks_on_commit; - return 0; out_free_locality_groups: @@ -2637,58 +2587,55 @@ static inline int ext4_issue_discard(struct super_block *sb, * This function is called by the jbd2 layer once the commit has finished, * so we know we can free the blocks that were released with that commit. */ -static void release_blocks_on_commit(journal_t *journal, transaction_t *txn) +static void ext4_free_data_callback(struct super_block *sb, + struct ext4_journal_cb_entry *jce, + int rc) { - struct super_block *sb = journal->j_private; + struct ext4_free_data *entry = (struct ext4_free_data *)jce; struct ext4_buddy e4b; struct ext4_group_info *db; int err, count = 0, count2 = 0; - struct ext4_free_data *entry; - struct list_head *l, *ltmp; - list_for_each_safe(l, ltmp, &txn->t_private_list) { - entry = list_entry(l, struct ext4_free_data, list); + mb_debug(1, "gonna free %u blocks in group %u (0x%p):", + entry->efd_count, entry->efd_group, entry); - mb_debug(1, "gonna free %u blocks in group %u (0x%p):", - entry->count, entry->group, entry); + if (test_opt(sb, DISCARD)) + ext4_issue_discard(sb, entry->efd_group, + entry->efd_start_cluster, entry->efd_count); - if (test_opt(sb, DISCARD)) - ext4_issue_discard(sb, entry->group, - entry->start_cluster, entry->count); + err = ext4_mb_load_buddy(sb, entry->efd_group, &e4b); + /* we expect to find existing buddy because it's pinned */ + BUG_ON(err != 0); - err = ext4_mb_load_buddy(sb, entry->group, &e4b); - /* we expect to find existing buddy because it's pinned */ - BUG_ON(err != 0); - db = e4b.bd_info; - /* there are blocks to put in buddy to make them really free */ - count += entry->count; - count2++; - ext4_lock_group(sb, entry->group); - /* Take it out of per group rb tree */ - rb_erase(&entry->node, &(db->bb_free_root)); - mb_free_blocks(NULL, &e4b, entry->start_cluster, entry->count); + db = e4b.bd_info; + /* there are blocks to put in buddy to make them really free */ + count += entry->efd_count; + count2++; + ext4_lock_group(sb, entry->efd_group); + /* Take it out of per group rb tree */ + rb_erase(&entry->efd_node, &(db->bb_free_root)); + mb_free_blocks(NULL, &e4b, entry->efd_start_cluster, entry->efd_count); - /* - * Clear the trimmed flag for the group so that the next - * ext4_trim_fs can trim it. - * If the volume is mounted with -o discard, online discard - * is supported and the free blocks will be trimmed online. - */ - if (!test_opt(sb, DISCARD)) - EXT4_MB_GRP_CLEAR_TRIMMED(db); + /* + * Clear the trimmed flag for the group so that the next + * ext4_trim_fs can trim it. + * If the volume is mounted with -o discard, online discard + * is supported and the free blocks will be trimmed online. + */ + if (!test_opt(sb, DISCARD)) + EXT4_MB_GRP_CLEAR_TRIMMED(db); - if (!db->bb_free_root.rb_node) { - /* No more items in the per group rb tree - * balance refcounts from ext4_mb_free_metadata() - */ - page_cache_release(e4b.bd_buddy_page); - page_cache_release(e4b.bd_bitmap_page); - } - ext4_unlock_group(sb, entry->group); - kmem_cache_free(ext4_free_ext_cachep, entry); - ext4_mb_unload_buddy(&e4b); + if (!db->bb_free_root.rb_node) { + /* No more items in the per group rb tree + * balance refcounts from ext4_mb_free_metadata() + */ + page_cache_release(e4b.bd_buddy_page); + page_cache_release(e4b.bd_bitmap_page); } + ext4_unlock_group(sb, entry->efd_group); + kmem_cache_free(ext4_free_data_cachep, entry); + ext4_mb_unload_buddy(&e4b); mb_debug(1, "freed %u blocks in %u structures\n", count, count2); } @@ -2741,9 +2688,9 @@ int __init ext4_init_mballoc(void) return -ENOMEM; } - ext4_free_ext_cachep = KMEM_CACHE(ext4_free_data, - SLAB_RECLAIM_ACCOUNT); - if (ext4_free_ext_cachep == NULL) { + ext4_free_data_cachep = KMEM_CACHE(ext4_free_data, + SLAB_RECLAIM_ACCOUNT); + if (ext4_free_data_cachep == NULL) { kmem_cache_destroy(ext4_pspace_cachep); kmem_cache_destroy(ext4_ac_cachep); return -ENOMEM; @@ -2761,7 +2708,7 @@ void ext4_exit_mballoc(void) rcu_barrier(); kmem_cache_destroy(ext4_pspace_cachep); kmem_cache_destroy(ext4_ac_cachep); - kmem_cache_destroy(ext4_free_ext_cachep); + kmem_cache_destroy(ext4_free_data_cachep); ext4_groupinfo_destroy_slabs(); ext4_remove_debugfs_entry(); } @@ -2815,7 +2762,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, len = EXT4_C2B(sbi, ac->ac_b_ex.fe_len); if (!ext4_data_block_valid(sbi, block, len)) { ext4_error(sb, "Allocating blocks %llu-%llu which overlap " - "fs metadata\n", block, block+len); + "fs metadata", block, block+len); /* File system mounted not to panic on error * Fix the bitmap and repeat the block allocation * We leak some of the blocks here. @@ -2911,7 +2858,8 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); int bsbits, max; ext4_lblk_t end; - loff_t size, orig_size, start_off; + loff_t size, start_off; + loff_t orig_size __maybe_unused; ext4_lblk_t start; struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); struct ext4_prealloc_space *pa; @@ -3321,8 +3269,8 @@ static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap, n = rb_first(&(grp->bb_free_root)); while (n) { - entry = rb_entry(n, struct ext4_free_data, node); - ext4_set_bits(bitmap, entry->start_cluster, entry->count); + entry = rb_entry(n, struct ext4_free_data, efd_node); + ext4_set_bits(bitmap, entry->efd_start_cluster, entry->efd_count); n = rb_next(n); } return; @@ -3916,11 +3864,11 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac) (EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED)) return; - ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: Can't allocate:" + ext4_msg(ac->ac_sb, KERN_ERR, "Can't allocate:" " Allocation context details:"); - ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: status %d flags %d", + ext4_msg(ac->ac_sb, KERN_ERR, "status %d flags %d", ac->ac_status, ac->ac_flags); - ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: orig %lu/%lu/%lu@%lu, " + ext4_msg(ac->ac_sb, KERN_ERR, "orig %lu/%lu/%lu@%lu, " "goal %lu/%lu/%lu@%lu, " "best %lu/%lu/%lu@%lu cr %d", (unsigned long)ac->ac_o_ex.fe_group, @@ -3936,9 +3884,9 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac) (unsigned long)ac->ac_b_ex.fe_len, (unsigned long)ac->ac_b_ex.fe_logical, (int)ac->ac_criteria); - ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: %lu scanned, %d found", + ext4_msg(ac->ac_sb, KERN_ERR, "%lu scanned, %d found", ac->ac_ex_scanned, ac->ac_found); - ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: groups: "); + ext4_msg(ac->ac_sb, KERN_ERR, "groups: "); ngroups = ext4_get_groups_count(sb); for (i = 0; i < ngroups; i++) { struct ext4_group_info *grp = ext4_get_group_info(sb, i); @@ -4428,9 +4376,9 @@ out: static int can_merge(struct ext4_free_data *entry1, struct ext4_free_data *entry2) { - if ((entry1->t_tid == entry2->t_tid) && - (entry1->group == entry2->group) && - ((entry1->start_cluster + entry1->count) == entry2->start_cluster)) + if ((entry1->efd_tid == entry2->efd_tid) && + (entry1->efd_group == entry2->efd_group) && + ((entry1->efd_start_cluster + entry1->efd_count) == entry2->efd_start_cluster)) return 1; return 0; } @@ -4452,8 +4400,8 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b, BUG_ON(e4b->bd_bitmap_page == NULL); BUG_ON(e4b->bd_buddy_page == NULL); - new_node = &new_entry->node; - cluster = new_entry->start_cluster; + new_node = &new_entry->efd_node; + cluster = new_entry->efd_start_cluster; if (!*n) { /* first free block exent. We need to @@ -4466,10 +4414,10 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b, } while (*n) { parent = *n; - entry = rb_entry(parent, struct ext4_free_data, node); - if (cluster < entry->start_cluster) + entry = rb_entry(parent, struct ext4_free_data, efd_node); + if (cluster < entry->efd_start_cluster) n = &(*n)->rb_left; - else if (cluster >= (entry->start_cluster + entry->count)) + else if (cluster >= (entry->efd_start_cluster + entry->efd_count)) n = &(*n)->rb_right; else { ext4_grp_locked_error(sb, group, 0, @@ -4486,34 +4434,29 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b, /* Now try to see the extent can be merged to left and right */ node = rb_prev(new_node); if (node) { - entry = rb_entry(node, struct ext4_free_data, node); + entry = rb_entry(node, struct ext4_free_data, efd_node); if (can_merge(entry, new_entry)) { - new_entry->start_cluster = entry->start_cluster; - new_entry->count += entry->count; + new_entry->efd_start_cluster = entry->efd_start_cluster; + new_entry->efd_count += entry->efd_count; rb_erase(node, &(db->bb_free_root)); - spin_lock(&sbi->s_md_lock); - list_del(&entry->list); - spin_unlock(&sbi->s_md_lock); - kmem_cache_free(ext4_free_ext_cachep, entry); + ext4_journal_callback_del(handle, &entry->efd_jce); + kmem_cache_free(ext4_free_data_cachep, entry); } } node = rb_next(new_node); if (node) { - entry = rb_entry(node, struct ext4_free_data, node); + entry = rb_entry(node, struct ext4_free_data, efd_node); if (can_merge(new_entry, entry)) { - new_entry->count += entry->count; + new_entry->efd_count += entry->efd_count; rb_erase(node, &(db->bb_free_root)); - spin_lock(&sbi->s_md_lock); - list_del(&entry->list); - spin_unlock(&sbi->s_md_lock); - kmem_cache_free(ext4_free_ext_cachep, entry); + ext4_journal_callback_del(handle, &entry->efd_jce); + kmem_cache_free(ext4_free_data_cachep, entry); } } /* Add the extent to transaction's private list */ - spin_lock(&sbi->s_md_lock); - list_add(&new_entry->list, &handle->h_transaction->t_private_list); - spin_unlock(&sbi->s_md_lock); + ext4_journal_callback_add(handle, ext4_free_data_callback, + &new_entry->efd_jce); return 0; } @@ -4691,15 +4634,15 @@ do_more: * blocks being freed are metadata. these blocks shouldn't * be used until this transaction is committed */ - new_entry = kmem_cache_alloc(ext4_free_ext_cachep, GFP_NOFS); + new_entry = kmem_cache_alloc(ext4_free_data_cachep, GFP_NOFS); if (!new_entry) { err = -ENOMEM; goto error_return; } - new_entry->start_cluster = bit; - new_entry->group = block_group; - new_entry->count = count_clusters; - new_entry->t_tid = handle->h_transaction->t_tid; + new_entry->efd_start_cluster = bit; + new_entry->efd_group = block_group; + new_entry->efd_count = count_clusters; + new_entry->efd_tid = handle->h_transaction->t_tid; ext4_lock_group(sb, block_group); mb_clear_bits(bitmap_bh->b_data, bit, count_clusters); @@ -4971,11 +4914,11 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group, start = (e4b.bd_info->bb_first_free > start) ? e4b.bd_info->bb_first_free : start; - while (start < max) { - start = mb_find_next_zero_bit(bitmap, max, start); - if (start >= max) + while (start <= max) { + start = mb_find_next_zero_bit(bitmap, max + 1, start); + if (start > max) break; - next = mb_find_next_bit(bitmap, max, start); + next = mb_find_next_bit(bitmap, max + 1, start); if ((next - start) >= minblocks) { ext4_trim_extent(sb, start, @@ -5027,37 +4970,36 @@ out: int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) { struct ext4_group_info *grp; - ext4_group_t first_group, last_group; - ext4_group_t group, ngroups = ext4_get_groups_count(sb); + ext4_group_t group, first_group, last_group; ext4_grpblk_t cnt = 0, first_cluster, last_cluster; - uint64_t start, len, minlen, trimmed = 0; + uint64_t start, end, minlen, trimmed = 0; ext4_fsblk_t first_data_blk = le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); + ext4_fsblk_t max_blks = ext4_blocks_count(EXT4_SB(sb)->s_es); int ret = 0; start = range->start >> sb->s_blocksize_bits; - len = range->len >> sb->s_blocksize_bits; + end = start + (range->len >> sb->s_blocksize_bits) - 1; minlen = range->minlen >> sb->s_blocksize_bits; - if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb))) + if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb)) || + unlikely(start >= max_blks)) return -EINVAL; - if (start + len <= first_data_blk) + if (end >= max_blks) + end = max_blks - 1; + if (end <= first_data_blk) goto out; - if (start < first_data_blk) { - len -= first_data_blk - start; + if (start < first_data_blk) start = first_data_blk; - } - /* Determine first and last group to examine based on start and len */ + /* Determine first and last group to examine based on start and end */ ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) start, &first_group, &first_cluster); - ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) (start + len), + ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) end, &last_group, &last_cluster); - last_group = (last_group > ngroups - 1) ? ngroups - 1 : last_group; - last_cluster = EXT4_CLUSTERS_PER_GROUP(sb); - if (first_group > last_group) - return -EINVAL; + /* end now represents the last cluster to discard in this group */ + end = EXT4_CLUSTERS_PER_GROUP(sb) - 1; for (group = first_group; group <= last_group; group++) { grp = ext4_get_group_info(sb, group); @@ -5069,31 +5011,35 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) } /* - * For all the groups except the last one, last block will - * always be EXT4_BLOCKS_PER_GROUP(sb), so we only need to - * change it for the last group in which case start + - * len < EXT4_BLOCKS_PER_GROUP(sb). + * For all the groups except the last one, last cluster will + * always be EXT4_CLUSTERS_PER_GROUP(sb)-1, so we only need to + * change it for the last group, note that last_cluster is + * already computed earlier by ext4_get_group_no_and_offset() */ - if (first_cluster + len < EXT4_CLUSTERS_PER_GROUP(sb)) - last_cluster = first_cluster + len; - len -= last_cluster - first_cluster; + if (group == last_group) + end = last_cluster; if (grp->bb_free >= minlen) { cnt = ext4_trim_all_free(sb, group, first_cluster, - last_cluster, minlen); + end, minlen); if (cnt < 0) { ret = cnt; break; } + trimmed += cnt; } - trimmed += cnt; + + /* + * For every group except the first one, we are sure + * that the first cluster to discard will be cluster #0. + */ first_cluster = 0; } - range->len = trimmed * sb->s_blocksize; if (!ret) atomic_set(&EXT4_SB(sb)->s_last_trim_minblks, minlen); out: + range->len = trimmed * sb->s_blocksize; return ret; } diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index 47705f3285e..c070618c21c 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -96,21 +96,23 @@ extern u8 mb_enable_debug; struct ext4_free_data { - /* this links the free block information from group_info */ - struct rb_node node; + /* MUST be the first member */ + struct ext4_journal_cb_entry efd_jce; + + /* ext4_free_data private data starts from here */ - /* this links the free block information from ext4_sb_info */ - struct list_head list; + /* this links the free block information from group_info */ + struct rb_node efd_node; /* group which free block extent belongs */ - ext4_group_t group; + ext4_group_t efd_group; /* free block extent */ - ext4_grpblk_t start_cluster; - ext4_grpblk_t count; + ext4_grpblk_t efd_start_cluster; + ext4_grpblk_t efd_count; /* transaction which freed this extent */ - tid_t t_tid; + tid_t efd_tid; }; struct ext4_prealloc_space { @@ -210,8 +212,6 @@ struct ext4_buddy { __u16 bd_blkbits; ext4_group_t bd_group; }; -#define EXT4_MB_BITMAP(e4b) ((e4b)->bd_bitmap) -#define EXT4_MB_BUDDY(e4b) ((e4b)->bd_buddy) static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb, struct ext4_free_extent *fex) diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index e7d6bb0acfa..f39f80f8f2c 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -471,7 +471,7 @@ int ext4_ext_migrate(struct inode *inode) tmp_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode, S_IFREG, NULL, goal, owner); if (IS_ERR(tmp_inode)) { - retval = PTR_ERR(inode); + retval = PTR_ERR(tmp_inode); ext4_journal_stop(handle); return retval; } diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index 7ea4ba4eff2..ed6548d8916 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -257,8 +257,8 @@ int ext4_multi_mount_protect(struct super_block *sb, * If check_interval in MMP block is larger, use that instead of * update_interval from the superblock. */ - if (mmp->mmp_check_interval > mmp_check_interval) - mmp_check_interval = mmp->mmp_check_interval; + if (le16_to_cpu(mmp->mmp_check_interval) > mmp_check_interval) + mmp_check_interval = le16_to_cpu(mmp->mmp_check_interval); seq = le32_to_cpu(mmp->mmp_seq); if (seq == EXT4_MMP_SEQ_CLEAN) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 2043f482375..349d7b3671c 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -468,7 +468,7 @@ fail2: fail: if (*err == ERR_BAD_DX_DIR) ext4_warning(dir->i_sb, - "Corrupt dir inode %ld, running e2fsck is " + "Corrupt dir inode %lu, running e2fsck is " "recommended.", dir->i_ino); return NULL; } diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 47585189651..74cd1f7f1f8 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -60,7 +60,6 @@ void ext4_ioend_wait(struct inode *inode) static void put_io_page(struct ext4_io_page *io_page) { if (atomic_dec_and_test(&io_page->p_count)) { - end_page_writeback(io_page->p_page); put_page(io_page->p_page); kmem_cache_free(io_page_cachep, io_page); } @@ -110,6 +109,8 @@ int ext4_end_io_nolock(ext4_io_end_t *io) if (io->iocb) aio_complete(io->iocb, io->result, 0); + if (io->flag & EXT4_IO_END_DIRECT) + inode_dio_done(inode); /* Wake up anyone waiting on unwritten extent conversion */ if (atomic_dec_and_test(&EXT4_I(inode)->i_aiodio_unwritten)) wake_up_all(ext4_ioend_wq(io->inode)); @@ -127,12 +128,18 @@ static void ext4_end_io_work(struct work_struct *work) unsigned long flags; spin_lock_irqsave(&ei->i_completed_io_lock, flags); + if (io->flag & EXT4_IO_END_IN_FSYNC) + goto requeue; if (list_empty(&io->list)) { spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); goto free; } if (!mutex_trylock(&inode->i_mutex)) { + bool was_queued; +requeue: + was_queued = !!(io->flag & EXT4_IO_END_QUEUED); + io->flag |= EXT4_IO_END_QUEUED; spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); /* * Requeue the work instead of waiting so that the work @@ -145,9 +152,8 @@ static void ext4_end_io_work(struct work_struct *work) * yield the cpu if it sees an end_io request that has already * been requeued. */ - if (io->flag & EXT4_IO_END_QUEUED) + if (was_queued) yield(); - io->flag |= EXT4_IO_END_QUEUED; return; } list_del_init(&io->list); @@ -227,9 +233,9 @@ static void ext4_end_bio(struct bio *bio, int error) } while (bh != head); } - put_io_page(io_end->pages[i]); + if (atomic_read(&io_end->pages[i]->p_count) == 1) + end_page_writeback(io_end->pages[i]->p_page); } - io_end->num_io_pages = 0; inode = io_end->inode; if (error) { @@ -421,6 +427,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io, * PageWriteback bit from the page to prevent the system from * wedging later on. */ + if (atomic_read(&io_page->p_count) == 1) + end_page_writeback(page); put_io_page(io_page); return ret; } diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index f9d948f0eb8..59fa0be2725 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1163,8 +1163,11 @@ static void ext4_update_super(struct super_block *sb, do_div(reserved_blocks, 100); ext4_blocks_count_set(es, ext4_blocks_count(es) + blocks_count); + ext4_free_blocks_count_set(es, ext4_free_blocks_count(es) + free_blocks); le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) * flex_gd->count); + le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) * + flex_gd->count); /* * We need to protect s_groups_count against other CPUs seeing @@ -1465,6 +1468,7 @@ static int ext4_group_extend_no_check(struct super_block *sb, } ext4_blocks_count_set(es, o_blocks_count + add); + ext4_free_blocks_count_set(es, ext4_free_blocks_count(es) + add); ext4_debug("freeing blocks %llu through %llu\n", o_blocks_count, o_blocks_count + add); /* We add the blocks to the bitmap and set the group need init bit */ @@ -1512,16 +1516,17 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es, o_blocks_count = ext4_blocks_count(es); if (test_opt(sb, DEBUG)) - printk(KERN_DEBUG "EXT4-fs: extending last group from %llu to %llu blocks\n", - o_blocks_count, n_blocks_count); + ext4_msg(sb, KERN_DEBUG, + "extending last group from %llu to %llu blocks", + o_blocks_count, n_blocks_count); if (n_blocks_count == 0 || n_blocks_count == o_blocks_count) return 0; if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) { - printk(KERN_ERR "EXT4-fs: filesystem on %s:" - " too large to resize to %llu blocks safely\n", - sb->s_id, n_blocks_count); + ext4_msg(sb, KERN_ERR, + "filesystem too large to resize to %llu blocks safely", + n_blocks_count); if (sizeof(sector_t) < 8) ext4_warning(sb, "CONFIG_LBDAF not enabled"); return -EINVAL; @@ -1582,7 +1587,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) ext4_fsblk_t o_blocks_count; ext4_group_t o_group; ext4_group_t n_group; - ext4_grpblk_t offset; + ext4_grpblk_t offset, add; unsigned long n_desc_blocks; unsigned long o_desc_blocks; unsigned long desc_blocks; @@ -1591,8 +1596,8 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) o_blocks_count = ext4_blocks_count(es); if (test_opt(sb, DEBUG)) - printk(KERN_DEBUG "EXT4-fs: resizing filesystem from %llu " - "upto %llu blocks\n", o_blocks_count, n_blocks_count); + ext4_msg(sb, KERN_DEBUG, "resizing filesystem from %llu " + "to %llu blocks", o_blocks_count, n_blocks_count); if (n_blocks_count < o_blocks_count) { /* On-line shrinking not supported */ @@ -1605,7 +1610,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) return 0; ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &offset); - ext4_get_group_no_and_offset(sb, o_blocks_count, &o_group, &offset); + ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); n_desc_blocks = (n_group + EXT4_DESC_PER_BLOCK(sb)) / EXT4_DESC_PER_BLOCK(sb); @@ -1634,10 +1639,12 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) } brelse(bh); - if (offset != 0) { - /* extend the last group */ - ext4_grpblk_t add; - add = EXT4_BLOCKS_PER_GROUP(sb) - offset; + /* extend the last group */ + if (n_group == o_group) + add = n_blocks_count - o_blocks_count; + else + add = EXT4_BLOCKS_PER_GROUP(sb) - (offset + 1); + if (add > 0) { err = ext4_group_extend_no_check(sb, o_blocks_count, add); if (err) goto out; @@ -1674,7 +1681,7 @@ out: iput(resize_inode); if (test_opt(sb, DEBUG)) - printk(KERN_DEBUG "EXT4-fs: resized filesystem from %llu " - "upto %llu blocks\n", o_blocks_count, n_blocks_count); + ext4_msg(sb, KERN_DEBUG, "resized filesystem from %llu " + "upto %llu blocks", o_blocks_count, n_blocks_count); return err; } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 502c61fd739..ceebaf853be 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -62,6 +62,7 @@ static struct ext4_features *ext4_feat; static int ext4_load_journal(struct super_block *, struct ext4_super_block *, unsigned long journal_devnum); +static int ext4_show_options(struct seq_file *seq, struct dentry *root); static int ext4_commit_super(struct super_block *sb, int sync); static void ext4_mark_recovery_complete(struct super_block *sb, struct ext4_super_block *es); @@ -375,7 +376,7 @@ void ext4_journal_abort_handle(const char *caller, unsigned int line, if (is_handle_aborted(handle)) return; - printk(KERN_ERR "%s:%d: aborting transaction: %s in %s\n", + printk(KERN_ERR "EXT4-fs: %s:%d: aborting transaction: %s in %s\n", caller, line, errstr, err_fn); jbd2_journal_abort_handle(handle); @@ -431,6 +432,22 @@ static int block_device_ejected(struct super_block *sb) return bdi->dev == NULL; } +static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn) +{ + struct super_block *sb = journal->j_private; + struct ext4_sb_info *sbi = EXT4_SB(sb); + int error = is_journal_aborted(journal); + struct ext4_journal_cb_entry *jce, *tmp; + + spin_lock(&sbi->s_md_lock); + list_for_each_entry_safe(jce, tmp, &txn->t_private_list, jce_list) { + list_del_init(&jce->jce_list); + spin_unlock(&sbi->s_md_lock); + jce->jce_func(sb, jce, error); + spin_lock(&sbi->s_md_lock); + } + spin_unlock(&sbi->s_md_lock); +} /* Deal with the reporting of failure conditions on a filesystem such as * inconsistencies detected or read IO failures. @@ -498,11 +515,16 @@ void ext4_error_inode(struct inode *inode, const char *function, va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; - printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: inode #%lu: ", - inode->i_sb->s_id, function, line, inode->i_ino); if (block) - printk(KERN_CONT "block %llu: ", block); - printk(KERN_CONT "comm %s: %pV\n", current->comm, &vaf); + printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: " + "inode #%lu: block %llu: comm %s: %pV\n", + inode->i_sb->s_id, function, line, inode->i_ino, + block, current->comm, &vaf); + else + printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: " + "inode #%lu: comm %s: %pV\n", + inode->i_sb->s_id, function, line, inode->i_ino, + current->comm, &vaf); va_end(args); ext4_handle_error(inode->i_sb); @@ -524,15 +546,21 @@ void ext4_error_file(struct file *file, const char *function, path = d_path(&(file->f_path), pathname, sizeof(pathname)); if (IS_ERR(path)) path = "(unknown)"; - printk(KERN_CRIT - "EXT4-fs error (device %s): %s:%d: inode #%lu: ", - inode->i_sb->s_id, function, line, inode->i_ino); - if (block) - printk(KERN_CONT "block %llu: ", block); va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; - printk(KERN_CONT "comm %s: path %s: %pV\n", current->comm, path, &vaf); + if (block) + printk(KERN_CRIT + "EXT4-fs error (device %s): %s:%d: inode #%lu: " + "block %llu: comm %s: path %s: %pV\n", + inode->i_sb->s_id, function, line, inode->i_ino, + block, current->comm, path, &vaf); + else + printk(KERN_CRIT + "EXT4-fs error (device %s): %s:%d: inode #%lu: " + "comm %s: path %s: %pV\n", + inode->i_sb->s_id, function, line, inode->i_ino, + current->comm, path, &vaf); va_end(args); ext4_handle_error(inode->i_sb); @@ -808,9 +836,6 @@ static void ext4_put_super(struct super_block *sb) destroy_workqueue(sbi->dio_unwritten_wq); lock_super(sb); - if (sb->s_dirt) - ext4_commit_super(sb, 1); - if (sbi->s_journal) { err = jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; @@ -827,9 +852,12 @@ static void ext4_put_super(struct super_block *sb) if (!(sb->s_flags & MS_RDONLY)) { EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); es->s_state = cpu_to_le16(sbi->s_mount_state); - ext4_commit_super(sb, 1); } + if (sb->s_dirt || !(sb->s_flags & MS_RDONLY)) + ext4_commit_super(sb, 1); + if (sbi->s_proc) { + remove_proc_entry("options", sbi->s_proc); remove_proc_entry(sb->s_id, ext4_proc_root); } kobject_del(&sbi->s_kobj); @@ -990,180 +1018,6 @@ void ext4_clear_inode(struct inode *inode) } } -static inline void ext4_show_quota_options(struct seq_file *seq, - struct super_block *sb) -{ -#if defined(CONFIG_QUOTA) - struct ext4_sb_info *sbi = EXT4_SB(sb); - - if (sbi->s_jquota_fmt) { - char *fmtname = ""; - - switch (sbi->s_jquota_fmt) { - case QFMT_VFS_OLD: - fmtname = "vfsold"; - break; - case QFMT_VFS_V0: - fmtname = "vfsv0"; - break; - case QFMT_VFS_V1: - fmtname = "vfsv1"; - break; - } - seq_printf(seq, ",jqfmt=%s", fmtname); - } - - if (sbi->s_qf_names[USRQUOTA]) - seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]); - - if (sbi->s_qf_names[GRPQUOTA]) - seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]); - - if (test_opt(sb, USRQUOTA)) - seq_puts(seq, ",usrquota"); - - if (test_opt(sb, GRPQUOTA)) - seq_puts(seq, ",grpquota"); -#endif -} - -/* - * Show an option if - * - it's set to a non-default value OR - * - if the per-sb default is different from the global default - */ -static int ext4_show_options(struct seq_file *seq, struct dentry *root) -{ - int def_errors; - unsigned long def_mount_opts; - struct super_block *sb = root->d_sb; - struct ext4_sb_info *sbi = EXT4_SB(sb); - struct ext4_super_block *es = sbi->s_es; - - def_mount_opts = le32_to_cpu(es->s_default_mount_opts); - def_errors = le16_to_cpu(es->s_errors); - - if (sbi->s_sb_block != 1) - seq_printf(seq, ",sb=%llu", sbi->s_sb_block); - if (test_opt(sb, MINIX_DF)) - seq_puts(seq, ",minixdf"); - if (test_opt(sb, GRPID) && !(def_mount_opts & EXT4_DEFM_BSDGROUPS)) - seq_puts(seq, ",grpid"); - if (!test_opt(sb, GRPID) && (def_mount_opts & EXT4_DEFM_BSDGROUPS)) - seq_puts(seq, ",nogrpid"); - if (sbi->s_resuid != EXT4_DEF_RESUID || - le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID) { - seq_printf(seq, ",resuid=%u", sbi->s_resuid); - } - if (sbi->s_resgid != EXT4_DEF_RESGID || - le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) { - seq_printf(seq, ",resgid=%u", sbi->s_resgid); - } - if (test_opt(sb, ERRORS_RO)) { - if (def_errors == EXT4_ERRORS_PANIC || - def_errors == EXT4_ERRORS_CONTINUE) { - seq_puts(seq, ",errors=remount-ro"); - } - } - if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE) - seq_puts(seq, ",errors=continue"); - if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC) - seq_puts(seq, ",errors=panic"); - if (test_opt(sb, NO_UID32) && !(def_mount_opts & EXT4_DEFM_UID16)) - seq_puts(seq, ",nouid32"); - if (test_opt(sb, DEBUG) && !(def_mount_opts & EXT4_DEFM_DEBUG)) - seq_puts(seq, ",debug"); -#ifdef CONFIG_EXT4_FS_XATTR - if (test_opt(sb, XATTR_USER)) - seq_puts(seq, ",user_xattr"); - if (!test_opt(sb, XATTR_USER)) - seq_puts(seq, ",nouser_xattr"); -#endif -#ifdef CONFIG_EXT4_FS_POSIX_ACL - if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL)) - seq_puts(seq, ",acl"); - if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL)) - seq_puts(seq, ",noacl"); -#endif - if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) { - seq_printf(seq, ",commit=%u", - (unsigned) (sbi->s_commit_interval / HZ)); - } - if (sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME) { - seq_printf(seq, ",min_batch_time=%u", - (unsigned) sbi->s_min_batch_time); - } - if (sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) { - seq_printf(seq, ",max_batch_time=%u", - (unsigned) sbi->s_max_batch_time); - } - - /* - * We're changing the default of barrier mount option, so - * let's always display its mount state so it's clear what its - * status is. - */ - seq_puts(seq, ",barrier="); - seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0"); - if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) - seq_puts(seq, ",journal_async_commit"); - else if (test_opt(sb, JOURNAL_CHECKSUM)) - seq_puts(seq, ",journal_checksum"); - if (test_opt(sb, I_VERSION)) - seq_puts(seq, ",i_version"); - if (!test_opt(sb, DELALLOC) && - !(def_mount_opts & EXT4_DEFM_NODELALLOC)) - seq_puts(seq, ",nodelalloc"); - - if (!test_opt(sb, MBLK_IO_SUBMIT)) - seq_puts(seq, ",nomblk_io_submit"); - if (sbi->s_stripe) - seq_printf(seq, ",stripe=%lu", sbi->s_stripe); - /* - * journal mode get enabled in different ways - * So just print the value even if we didn't specify it - */ - if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) - seq_puts(seq, ",data=journal"); - else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) - seq_puts(seq, ",data=ordered"); - else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA) - seq_puts(seq, ",data=writeback"); - - if (sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS) - seq_printf(seq, ",inode_readahead_blks=%u", - sbi->s_inode_readahead_blks); - - if (test_opt(sb, DATA_ERR_ABORT)) - seq_puts(seq, ",data_err=abort"); - - if (test_opt(sb, NO_AUTO_DA_ALLOC)) - seq_puts(seq, ",noauto_da_alloc"); - - if (test_opt(sb, DISCARD) && !(def_mount_opts & EXT4_DEFM_DISCARD)) - seq_puts(seq, ",discard"); - - if (test_opt(sb, NOLOAD)) - seq_puts(seq, ",norecovery"); - - if (test_opt(sb, DIOREAD_NOLOCK)) - seq_puts(seq, ",dioread_nolock"); - - if (test_opt(sb, BLOCK_VALIDITY) && - !(def_mount_opts & EXT4_DEFM_BLOCK_VALIDITY)) - seq_puts(seq, ",block_validity"); - - if (!test_opt(sb, INIT_INODE_TABLE)) - seq_puts(seq, ",noinit_itable"); - else if (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT) - seq_printf(seq, ",init_itable=%u", - (unsigned) sbi->s_li_wait_mult); - - ext4_show_quota_options(seq, sb); - - return 0; -} - static struct inode *ext4_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) { @@ -1316,18 +1170,17 @@ static const struct export_operations ext4_export_ops = { enum { Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid, Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro, - Opt_nouid32, Opt_debug, Opt_oldalloc, Opt_orlov, + Opt_nouid32, Opt_debug, Opt_removed, Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl, - Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_nobh, Opt_bh, + Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_commit, Opt_min_batch_time, Opt_max_batch_time, - Opt_journal_update, Opt_journal_dev, - Opt_journal_checksum, Opt_journal_async_commit, + Opt_journal_dev, Opt_journal_checksum, Opt_journal_async_commit, Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback, Opt_data_err_abort, Opt_data_err_ignore, Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota, Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota, - Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, - Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version, + Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, + Opt_usrquota, Opt_grpquota, Opt_i_version, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit, Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity, Opt_inode_readahead_blks, Opt_journal_ioprio, @@ -1350,20 +1203,19 @@ static const match_table_t tokens = { {Opt_err_ro, "errors=remount-ro"}, {Opt_nouid32, "nouid32"}, {Opt_debug, "debug"}, - {Opt_oldalloc, "oldalloc"}, - {Opt_orlov, "orlov"}, + {Opt_removed, "oldalloc"}, + {Opt_removed, "orlov"}, {Opt_user_xattr, "user_xattr"}, {Opt_nouser_xattr, "nouser_xattr"}, {Opt_acl, "acl"}, {Opt_noacl, "noacl"}, - {Opt_noload, "noload"}, {Opt_noload, "norecovery"}, - {Opt_nobh, "nobh"}, - {Opt_bh, "bh"}, + {Opt_noload, "noload"}, + {Opt_removed, "nobh"}, + {Opt_removed, "bh"}, {Opt_commit, "commit=%u"}, {Opt_min_batch_time, "min_batch_time=%u"}, {Opt_max_batch_time, "max_batch_time=%u"}, - {Opt_journal_update, "journal=update"}, {Opt_journal_dev, "journal_dev=%u"}, {Opt_journal_checksum, "journal_checksum"}, {Opt_journal_async_commit, "journal_async_commit"}, @@ -1389,7 +1241,6 @@ static const match_table_t tokens = { {Opt_nobarrier, "nobarrier"}, {Opt_i_version, "i_version"}, {Opt_stripe, "stripe=%u"}, - {Opt_resize, "resize"}, {Opt_delalloc, "delalloc"}, {Opt_nodelalloc, "nodelalloc"}, {Opt_mblk_io_submit, "mblk_io_submit"}, @@ -1408,6 +1259,11 @@ static const match_table_t tokens = { {Opt_init_itable, "init_itable=%u"}, {Opt_init_itable, "init_itable"}, {Opt_noinit_itable, "noinit_itable"}, + {Opt_removed, "check=none"}, /* mount option from ext2/3 */ + {Opt_removed, "nocheck"}, /* mount option from ext2/3 */ + {Opt_removed, "reservation"}, /* mount option from ext2/3 */ + {Opt_removed, "noreservation"}, /* mount option from ext2/3 */ + {Opt_removed, "journal=%u"}, /* mount option from ext2/3 */ {Opt_err, NULL}, }; @@ -1496,420 +1352,273 @@ static int clear_qf_name(struct super_block *sb, int qtype) } #endif -static int parse_options(char *options, struct super_block *sb, - unsigned long *journal_devnum, - unsigned int *journal_ioprio, - ext4_fsblk_t *n_blocks_count, int is_remount) -{ - struct ext4_sb_info *sbi = EXT4_SB(sb); - char *p; - substring_t args[MAX_OPT_ARGS]; - int data_opt = 0; - int option; +#define MOPT_SET 0x0001 +#define MOPT_CLEAR 0x0002 +#define MOPT_NOSUPPORT 0x0004 +#define MOPT_EXPLICIT 0x0008 +#define MOPT_CLEAR_ERR 0x0010 +#define MOPT_GTE0 0x0020 #ifdef CONFIG_QUOTA - int qfmt; +#define MOPT_Q 0 +#define MOPT_QFMT 0x0040 +#else +#define MOPT_Q MOPT_NOSUPPORT +#define MOPT_QFMT MOPT_NOSUPPORT #endif +#define MOPT_DATAJ 0x0080 - if (!options) - return 1; - - while ((p = strsep(&options, ",")) != NULL) { - int token; - if (!*p) - continue; - - /* - * Initialize args struct so we know whether arg was - * found; some options take optional arguments. - */ - args[0].to = args[0].from = NULL; - token = match_token(p, tokens, args); - switch (token) { - case Opt_bsd_df: - ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); - clear_opt(sb, MINIX_DF); - break; - case Opt_minix_df: - ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); - set_opt(sb, MINIX_DF); - - break; - case Opt_grpid: - ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); - set_opt(sb, GRPID); - - break; - case Opt_nogrpid: - ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38"); - clear_opt(sb, GRPID); - - break; - case Opt_resuid: - if (match_int(&args[0], &option)) - return 0; - sbi->s_resuid = option; - break; - case Opt_resgid: - if (match_int(&args[0], &option)) - return 0; - sbi->s_resgid = option; - break; - case Opt_sb: - /* handled by get_sb_block() instead of here */ - /* *sb_block = match_int(&args[0]); */ - break; - case Opt_err_panic: - clear_opt(sb, ERRORS_CONT); - clear_opt(sb, ERRORS_RO); - set_opt(sb, ERRORS_PANIC); - break; - case Opt_err_ro: - clear_opt(sb, ERRORS_CONT); - clear_opt(sb, ERRORS_PANIC); - set_opt(sb, ERRORS_RO); - break; - case Opt_err_cont: - clear_opt(sb, ERRORS_RO); - clear_opt(sb, ERRORS_PANIC); - set_opt(sb, ERRORS_CONT); - break; - case Opt_nouid32: - set_opt(sb, NO_UID32); - break; - case Opt_debug: - set_opt(sb, DEBUG); - break; - case Opt_oldalloc: - ext4_msg(sb, KERN_WARNING, - "Ignoring deprecated oldalloc option"); - break; - case Opt_orlov: - ext4_msg(sb, KERN_WARNING, - "Ignoring deprecated orlov option"); - break; +static const struct mount_opts { + int token; + int mount_opt; + int flags; +} ext4_mount_opts[] = { + {Opt_minix_df, EXT4_MOUNT_MINIX_DF, MOPT_SET}, + {Opt_bsd_df, EXT4_MOUNT_MINIX_DF, MOPT_CLEAR}, + {Opt_grpid, EXT4_MOUNT_GRPID, MOPT_SET}, + {Opt_nogrpid, EXT4_MOUNT_GRPID, MOPT_CLEAR}, + {Opt_mblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_SET}, + {Opt_nomblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_CLEAR}, + {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_SET}, + {Opt_noblock_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_CLEAR}, + {Opt_dioread_nolock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_SET}, + {Opt_dioread_lock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_CLEAR}, + {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_SET}, + {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_CLEAR}, + {Opt_delalloc, EXT4_MOUNT_DELALLOC, MOPT_SET | MOPT_EXPLICIT}, + {Opt_nodelalloc, EXT4_MOUNT_DELALLOC, MOPT_CLEAR | MOPT_EXPLICIT}, + {Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM, MOPT_SET}, + {Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT | + EXT4_MOUNT_JOURNAL_CHECKSUM), MOPT_SET}, + {Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_SET}, + {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR}, + {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR}, + {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_SET | MOPT_CLEAR_ERR}, + {Opt_data_err_abort, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_SET}, + {Opt_data_err_ignore, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_CLEAR}, + {Opt_barrier, EXT4_MOUNT_BARRIER, MOPT_SET}, + {Opt_nobarrier, EXT4_MOUNT_BARRIER, MOPT_CLEAR}, + {Opt_noauto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_SET}, + {Opt_auto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_CLEAR}, + {Opt_noinit_itable, EXT4_MOUNT_INIT_INODE_TABLE, MOPT_CLEAR}, + {Opt_commit, 0, MOPT_GTE0}, + {Opt_max_batch_time, 0, MOPT_GTE0}, + {Opt_min_batch_time, 0, MOPT_GTE0}, + {Opt_inode_readahead_blks, 0, MOPT_GTE0}, + {Opt_init_itable, 0, MOPT_GTE0}, + {Opt_stripe, 0, MOPT_GTE0}, + {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_DATAJ}, + {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_DATAJ}, + {Opt_data_writeback, EXT4_MOUNT_WRITEBACK_DATA, MOPT_DATAJ}, #ifdef CONFIG_EXT4_FS_XATTR - case Opt_user_xattr: - set_opt(sb, XATTR_USER); - break; - case Opt_nouser_xattr: - clear_opt(sb, XATTR_USER); - break; + {Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_SET}, + {Opt_nouser_xattr, EXT4_MOUNT_XATTR_USER, MOPT_CLEAR}, #else - case Opt_user_xattr: - case Opt_nouser_xattr: - ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported"); - break; + {Opt_user_xattr, 0, MOPT_NOSUPPORT}, + {Opt_nouser_xattr, 0, MOPT_NOSUPPORT}, #endif #ifdef CONFIG_EXT4_FS_POSIX_ACL - case Opt_acl: - set_opt(sb, POSIX_ACL); - break; - case Opt_noacl: - clear_opt(sb, POSIX_ACL); - break; + {Opt_acl, EXT4_MOUNT_POSIX_ACL, MOPT_SET}, + {Opt_noacl, EXT4_MOUNT_POSIX_ACL, MOPT_CLEAR}, #else - case Opt_acl: - case Opt_noacl: - ext4_msg(sb, KERN_ERR, "(no)acl options not supported"); - break; + {Opt_acl, 0, MOPT_NOSUPPORT}, + {Opt_noacl, 0, MOPT_NOSUPPORT}, #endif - case Opt_journal_update: - /* @@@ FIXME */ - /* Eventually we will want to be able to create - a journal file here. For now, only allow the - user to specify an existing inode to be the - journal file. */ - if (is_remount) { - ext4_msg(sb, KERN_ERR, - "Cannot specify journal on remount"); - return 0; - } - set_opt(sb, UPDATE_JOURNAL); - break; - case Opt_journal_dev: - if (is_remount) { + {Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET}, + {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET}, + {Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q}, + {Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, + MOPT_SET | MOPT_Q}, + {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA, + MOPT_SET | MOPT_Q}, + {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA | + EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q}, + {Opt_usrjquota, 0, MOPT_Q}, + {Opt_grpjquota, 0, MOPT_Q}, + {Opt_offusrjquota, 0, MOPT_Q}, + {Opt_offgrpjquota, 0, MOPT_Q}, + {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT}, + {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT}, + {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT}, + {Opt_err, 0, 0} +}; + +static int handle_mount_opt(struct super_block *sb, char *opt, int token, + substring_t *args, unsigned long *journal_devnum, + unsigned int *journal_ioprio, int is_remount) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + const struct mount_opts *m; + int arg = 0; + + if (args->from && match_int(args, &arg)) + return -1; + switch (token) { + case Opt_noacl: + case Opt_nouser_xattr: + ext4_msg(sb, KERN_WARNING, deprecated_msg, opt, "3.5"); + break; + case Opt_sb: + return 1; /* handled by get_sb_block() */ + case Opt_removed: + ext4_msg(sb, KERN_WARNING, + "Ignoring removed %s option", opt); + return 1; + case Opt_resuid: + sbi->s_resuid = arg; + return 1; + case Opt_resgid: + sbi->s_resgid = arg; + return 1; + case Opt_abort: + sbi->s_mount_flags |= EXT4_MF_FS_ABORTED; + return 1; + case Opt_i_version: + sb->s_flags |= MS_I_VERSION; + return 1; + case Opt_journal_dev: + if (is_remount) { + ext4_msg(sb, KERN_ERR, + "Cannot specify journal on remount"); + return -1; + } + *journal_devnum = arg; + return 1; + case Opt_journal_ioprio: + if (arg < 0 || arg > 7) + return -1; + *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg); + return 1; + } + + for (m = ext4_mount_opts; m->token != Opt_err; m++) { + if (token != m->token) + continue; + if (args->from && (m->flags & MOPT_GTE0) && (arg < 0)) + return -1; + if (m->flags & MOPT_EXPLICIT) + set_opt2(sb, EXPLICIT_DELALLOC); + if (m->flags & MOPT_CLEAR_ERR) + clear_opt(sb, ERRORS_MASK); + if (token == Opt_noquota && sb_any_quota_loaded(sb)) { + ext4_msg(sb, KERN_ERR, "Cannot change quota " + "options when quota turned on"); + return -1; + } + + if (m->flags & MOPT_NOSUPPORT) { + ext4_msg(sb, KERN_ERR, "%s option not supported", opt); + } else if (token == Opt_commit) { + if (arg == 0) + arg = JBD2_DEFAULT_MAX_COMMIT_AGE; + sbi->s_commit_interval = HZ * arg; + } else if (token == Opt_max_batch_time) { + if (arg == 0) + arg = EXT4_DEF_MAX_BATCH_TIME; + sbi->s_max_batch_time = arg; + } else if (token == Opt_min_batch_time) { + sbi->s_min_batch_time = arg; + } else if (token == Opt_inode_readahead_blks) { + if (arg > (1 << 30)) + return -1; + if (arg && !is_power_of_2(arg)) { ext4_msg(sb, KERN_ERR, - "Cannot specify journal on remount"); - return 0; + "EXT4-fs: inode_readahead_blks" + " must be a power of 2"); + return -1; } - if (match_int(&args[0], &option)) - return 0; - *journal_devnum = option; - break; - case Opt_journal_checksum: - set_opt(sb, JOURNAL_CHECKSUM); - break; - case Opt_journal_async_commit: - set_opt(sb, JOURNAL_ASYNC_COMMIT); - set_opt(sb, JOURNAL_CHECKSUM); - break; - case Opt_noload: - set_opt(sb, NOLOAD); - break; - case Opt_commit: - if (match_int(&args[0], &option)) - return 0; - if (option < 0) - return 0; - if (option == 0) - option = JBD2_DEFAULT_MAX_COMMIT_AGE; - sbi->s_commit_interval = HZ * option; - break; - case Opt_max_batch_time: - if (match_int(&args[0], &option)) - return 0; - if (option < 0) - return 0; - if (option == 0) - option = EXT4_DEF_MAX_BATCH_TIME; - sbi->s_max_batch_time = option; - break; - case Opt_min_batch_time: - if (match_int(&args[0], &option)) - return 0; - if (option < 0) - return 0; - sbi->s_min_batch_time = option; - break; - case Opt_data_journal: - data_opt = EXT4_MOUNT_JOURNAL_DATA; - goto datacheck; - case Opt_data_ordered: - data_opt = EXT4_MOUNT_ORDERED_DATA; - goto datacheck; - case Opt_data_writeback: - data_opt = EXT4_MOUNT_WRITEBACK_DATA; - datacheck: + sbi->s_inode_readahead_blks = arg; + } else if (token == Opt_init_itable) { + set_opt(sb, INIT_INODE_TABLE); + if (!args->from) + arg = EXT4_DEF_LI_WAIT_MULT; + sbi->s_li_wait_mult = arg; + } else if (token == Opt_stripe) { + sbi->s_stripe = arg; + } else if (m->flags & MOPT_DATAJ) { if (is_remount) { if (!sbi->s_journal) ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option"); - else if (test_opt(sb, DATA_FLAGS) != data_opt) { + else if (test_opt(sb, DATA_FLAGS) != + m->mount_opt) { ext4_msg(sb, KERN_ERR, - "Cannot change data mode on remount"); - return 0; + "Cannot change data mode on remount"); + return -1; } } else { clear_opt(sb, DATA_FLAGS); - sbi->s_mount_opt |= data_opt; + sbi->s_mount_opt |= m->mount_opt; } - break; - case Opt_data_err_abort: - set_opt(sb, DATA_ERR_ABORT); - break; - case Opt_data_err_ignore: - clear_opt(sb, DATA_ERR_ABORT); - break; #ifdef CONFIG_QUOTA - case Opt_usrjquota: + } else if (token == Opt_usrjquota) { if (!set_qf_name(sb, USRQUOTA, &args[0])) - return 0; - break; - case Opt_grpjquota: + return -1; + } else if (token == Opt_grpjquota) { if (!set_qf_name(sb, GRPQUOTA, &args[0])) - return 0; - break; - case Opt_offusrjquota: + return -1; + } else if (token == Opt_offusrjquota) { if (!clear_qf_name(sb, USRQUOTA)) - return 0; - break; - case Opt_offgrpjquota: + return -1; + } else if (token == Opt_offgrpjquota) { if (!clear_qf_name(sb, GRPQUOTA)) - return 0; - break; - - case Opt_jqfmt_vfsold: - qfmt = QFMT_VFS_OLD; - goto set_qf_format; - case Opt_jqfmt_vfsv0: - qfmt = QFMT_VFS_V0; - goto set_qf_format; - case Opt_jqfmt_vfsv1: - qfmt = QFMT_VFS_V1; -set_qf_format: + return -1; + } else if (m->flags & MOPT_QFMT) { if (sb_any_quota_loaded(sb) && - sbi->s_jquota_fmt != qfmt) { - ext4_msg(sb, KERN_ERR, "Cannot change " - "journaled quota options when " - "quota turned on"); - return 0; + sbi->s_jquota_fmt != m->mount_opt) { + ext4_msg(sb, KERN_ERR, "Cannot " + "change journaled quota options " + "when quota turned on"); + return -1; } - sbi->s_jquota_fmt = qfmt; - break; - case Opt_quota: - case Opt_usrquota: - set_opt(sb, QUOTA); - set_opt(sb, USRQUOTA); - break; - case Opt_grpquota: - set_opt(sb, QUOTA); - set_opt(sb, GRPQUOTA); - break; - case Opt_noquota: - if (sb_any_quota_loaded(sb)) { - ext4_msg(sb, KERN_ERR, "Cannot change quota " - "options when quota turned on"); - return 0; - } - clear_opt(sb, QUOTA); - clear_opt(sb, USRQUOTA); - clear_opt(sb, GRPQUOTA); - break; -#else - case Opt_quota: - case Opt_usrquota: - case Opt_grpquota: - ext4_msg(sb, KERN_ERR, - "quota options not supported"); - break; - case Opt_usrjquota: - case Opt_grpjquota: - case Opt_offusrjquota: - case Opt_offgrpjquota: - case Opt_jqfmt_vfsold: - case Opt_jqfmt_vfsv0: - case Opt_jqfmt_vfsv1: - ext4_msg(sb, KERN_ERR, - "journaled quota options not supported"); - break; - case Opt_noquota: - break; + sbi->s_jquota_fmt = m->mount_opt; #endif - case Opt_abort: - sbi->s_mount_flags |= EXT4_MF_FS_ABORTED; - break; - case Opt_nobarrier: - clear_opt(sb, BARRIER); - break; - case Opt_barrier: - if (args[0].from) { - if (match_int(&args[0], &option)) - return 0; - } else - option = 1; /* No argument, default to 1 */ - if (option) - set_opt(sb, BARRIER); - else - clear_opt(sb, BARRIER); - break; - case Opt_ignore: - break; - case Opt_resize: - if (!is_remount) { - ext4_msg(sb, KERN_ERR, - "resize option only available " - "for remount"); - return 0; - } - if (match_int(&args[0], &option) != 0) - return 0; - *n_blocks_count = option; - break; - case Opt_nobh: - ext4_msg(sb, KERN_WARNING, - "Ignoring deprecated nobh option"); - break; - case Opt_bh: - ext4_msg(sb, KERN_WARNING, - "Ignoring deprecated bh option"); - break; - case Opt_i_version: - set_opt(sb, I_VERSION); - sb->s_flags |= MS_I_VERSION; - break; - case Opt_nodelalloc: - clear_opt(sb, DELALLOC); - clear_opt2(sb, EXPLICIT_DELALLOC); - break; - case Opt_mblk_io_submit: - set_opt(sb, MBLK_IO_SUBMIT); - break; - case Opt_nomblk_io_submit: - clear_opt(sb, MBLK_IO_SUBMIT); - break; - case Opt_stripe: - if (match_int(&args[0], &option)) - return 0; - if (option < 0) - return 0; - sbi->s_stripe = option; - break; - case Opt_delalloc: - set_opt(sb, DELALLOC); - set_opt2(sb, EXPLICIT_DELALLOC); - break; - case Opt_block_validity: - set_opt(sb, BLOCK_VALIDITY); - break; - case Opt_noblock_validity: - clear_opt(sb, BLOCK_VALIDITY); - break; - case Opt_inode_readahead_blks: - if (match_int(&args[0], &option)) - return 0; - if (option < 0 || option > (1 << 30)) - return 0; - if (option && !is_power_of_2(option)) { - ext4_msg(sb, KERN_ERR, - "EXT4-fs: inode_readahead_blks" - " must be a power of 2"); - return 0; + } else { + if (!args->from) + arg = 1; + if (m->flags & MOPT_CLEAR) + arg = !arg; + else if (unlikely(!(m->flags & MOPT_SET))) { + ext4_msg(sb, KERN_WARNING, + "buggy handling of option %s", opt); + WARN_ON(1); + return -1; } - sbi->s_inode_readahead_blks = option; - break; - case Opt_journal_ioprio: - if (match_int(&args[0], &option)) - return 0; - if (option < 0 || option > 7) - break; - *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, - option); - break; - case Opt_noauto_da_alloc: - set_opt(sb, NO_AUTO_DA_ALLOC); - break; - case Opt_auto_da_alloc: - if (args[0].from) { - if (match_int(&args[0], &option)) - return 0; - } else - option = 1; /* No argument, default to 1 */ - if (option) - clear_opt(sb, NO_AUTO_DA_ALLOC); + if (arg != 0) + sbi->s_mount_opt |= m->mount_opt; else - set_opt(sb,NO_AUTO_DA_ALLOC); - break; - case Opt_discard: - set_opt(sb, DISCARD); - break; - case Opt_nodiscard: - clear_opt(sb, DISCARD); - break; - case Opt_dioread_nolock: - set_opt(sb, DIOREAD_NOLOCK); - break; - case Opt_dioread_lock: - clear_opt(sb, DIOREAD_NOLOCK); - break; - case Opt_init_itable: - set_opt(sb, INIT_INODE_TABLE); - if (args[0].from) { - if (match_int(&args[0], &option)) - return 0; - } else - option = EXT4_DEF_LI_WAIT_MULT; - if (option < 0) - return 0; - sbi->s_li_wait_mult = option; - break; - case Opt_noinit_itable: - clear_opt(sb, INIT_INODE_TABLE); - break; - default: - ext4_msg(sb, KERN_ERR, - "Unrecognized mount option \"%s\" " - "or missing value", p); - return 0; + sbi->s_mount_opt &= ~m->mount_opt; } + return 1; + } + ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" " + "or missing value", opt); + return -1; +} + +static int parse_options(char *options, struct super_block *sb, + unsigned long *journal_devnum, + unsigned int *journal_ioprio, + int is_remount) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + char *p; + substring_t args[MAX_OPT_ARGS]; + int token; + + if (!options) + return 1; + + while ((p = strsep(&options, ",")) != NULL) { + if (!*p) + continue; + /* + * Initialize args struct so we know whether arg was + * found; some options take optional arguments. + */ + args[0].to = args[0].from = 0; + token = match_token(p, tokens, args); + if (handle_mount_opt(sb, p, token, args, journal_devnum, + journal_ioprio, is_remount) < 0) + return 0; } #ifdef CONFIG_QUOTA if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) { @@ -1942,6 +1651,160 @@ set_qf_format: return 1; } +static inline void ext4_show_quota_options(struct seq_file *seq, + struct super_block *sb) +{ +#if defined(CONFIG_QUOTA) + struct ext4_sb_info *sbi = EXT4_SB(sb); + + if (sbi->s_jquota_fmt) { + char *fmtname = ""; + + switch (sbi->s_jquota_fmt) { + case QFMT_VFS_OLD: + fmtname = "vfsold"; + break; + case QFMT_VFS_V0: + fmtname = "vfsv0"; + break; + case QFMT_VFS_V1: + fmtname = "vfsv1"; + break; + } + seq_printf(seq, ",jqfmt=%s", fmtname); + } + + if (sbi->s_qf_names[USRQUOTA]) + seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]); + + if (sbi->s_qf_names[GRPQUOTA]) + seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]); + + if (test_opt(sb, USRQUOTA)) + seq_puts(seq, ",usrquota"); + + if (test_opt(sb, GRPQUOTA)) + seq_puts(seq, ",grpquota"); +#endif +} + +static const char *token2str(int token) +{ + static const struct match_token *t; + + for (t = tokens; t->token != Opt_err; t++) + if (t->token == token && !strchr(t->pattern, '=')) + break; + return t->pattern; +} + +/* + * Show an option if + * - it's set to a non-default value OR + * - if the per-sb default is different from the global default + */ +static int _ext4_show_options(struct seq_file *seq, struct super_block *sb, + int nodefs) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + struct ext4_super_block *es = sbi->s_es; + int def_errors, def_mount_opt = nodefs ? 0 : sbi->s_def_mount_opt; + const struct mount_opts *m; + char sep = nodefs ? '\n' : ','; + +#define SEQ_OPTS_PUTS(str) seq_printf(seq, "%c" str, sep) +#define SEQ_OPTS_PRINT(str, arg) seq_printf(seq, "%c" str, sep, arg) + + if (sbi->s_sb_block != 1) + SEQ_OPTS_PRINT("sb=%llu", sbi->s_sb_block); + + for (m = ext4_mount_opts; m->token != Opt_err; m++) { + int want_set = m->flags & MOPT_SET; + if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) || + (m->flags & MOPT_CLEAR_ERR)) + continue; + if (!(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt))) + continue; /* skip if same as the default */ + if ((want_set && + (sbi->s_mount_opt & m->mount_opt) != m->mount_opt) || + (!want_set && (sbi->s_mount_opt & m->mount_opt))) + continue; /* select Opt_noFoo vs Opt_Foo */ + SEQ_OPTS_PRINT("%s", token2str(m->token)); + } + + if (nodefs || sbi->s_resuid != EXT4_DEF_RESUID || + le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID) + SEQ_OPTS_PRINT("resuid=%u", sbi->s_resuid); + if (nodefs || sbi->s_resgid != EXT4_DEF_RESGID || + le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) + SEQ_OPTS_PRINT("resgid=%u", sbi->s_resgid); + def_errors = nodefs ? -1 : le16_to_cpu(es->s_errors); + if (test_opt(sb, ERRORS_RO) && def_errors != EXT4_ERRORS_RO) + SEQ_OPTS_PUTS("errors=remount-ro"); + if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE) + SEQ_OPTS_PUTS("errors=continue"); + if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC) + SEQ_OPTS_PUTS("errors=panic"); + if (nodefs || sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) + SEQ_OPTS_PRINT("commit=%lu", sbi->s_commit_interval / HZ); + if (nodefs || sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME) + SEQ_OPTS_PRINT("min_batch_time=%u", sbi->s_min_batch_time); + if (nodefs || sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) + SEQ_OPTS_PRINT("max_batch_time=%u", sbi->s_max_batch_time); + if (sb->s_flags & MS_I_VERSION) + SEQ_OPTS_PUTS("i_version"); + if (nodefs || sbi->s_stripe) + SEQ_OPTS_PRINT("stripe=%lu", sbi->s_stripe); + if (EXT4_MOUNT_DATA_FLAGS & (sbi->s_mount_opt ^ def_mount_opt)) { + if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) + SEQ_OPTS_PUTS("data=journal"); + else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) + SEQ_OPTS_PUTS("data=ordered"); + else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA) + SEQ_OPTS_PUTS("data=writeback"); + } + if (nodefs || + sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS) + SEQ_OPTS_PRINT("inode_readahead_blks=%u", + sbi->s_inode_readahead_blks); + + if (nodefs || (test_opt(sb, INIT_INODE_TABLE) && + (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT))) + SEQ_OPTS_PRINT("init_itable=%u", sbi->s_li_wait_mult); + + ext4_show_quota_options(seq, sb); + return 0; +} + +static int ext4_show_options(struct seq_file *seq, struct dentry *root) +{ + return _ext4_show_options(seq, root->d_sb, 0); +} + +static int options_seq_show(struct seq_file *seq, void *offset) +{ + struct super_block *sb = seq->private; + int rc; + + seq_puts(seq, (sb->s_flags & MS_RDONLY) ? "ro" : "rw"); + rc = _ext4_show_options(seq, sb, 1); + seq_puts(seq, "\n"); + return rc; +} + +static int options_open_fs(struct inode *inode, struct file *file) +{ + return single_open(file, options_seq_show, PDE(inode)->data); +} + +static const struct file_operations ext4_seq_options_fops = { + .owner = THIS_MODULE, + .open = options_open_fs, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es, int read_only) { @@ -2945,7 +2808,7 @@ static int ext4_run_lazyinit_thread(void) ext4_clear_request_list(); kfree(ext4_li_info); ext4_li_info = NULL; - printk(KERN_CRIT "EXT4: error %d creating inode table " + printk(KERN_CRIT "EXT4-fs: error %d creating inode table " "initialization thread\n", err); return err; @@ -3183,11 +3046,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) set_opt(sb, INIT_INODE_TABLE); if (def_mount_opts & EXT4_DEFM_DEBUG) set_opt(sb, DEBUG); - if (def_mount_opts & EXT4_DEFM_BSDGROUPS) { - ext4_msg(sb, KERN_WARNING, deprecated_msg, "bsdgroups", - "2.6.38"); + if (def_mount_opts & EXT4_DEFM_BSDGROUPS) set_opt(sb, GRPID); - } if (def_mount_opts & EXT4_DEFM_UID16) set_opt(sb, NO_UID32); /* xattr user namespace & acls are now defaulted on */ @@ -3240,13 +3100,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT; if (!parse_options((char *) sbi->s_es->s_mount_opts, sb, - &journal_devnum, &journal_ioprio, NULL, 0)) { + &journal_devnum, &journal_ioprio, 0)) { ext4_msg(sb, KERN_WARNING, "failed to parse options in superblock: %s", sbi->s_es->s_mount_opts); } + sbi->s_def_mount_opt = sbi->s_mount_opt; if (!parse_options((char *) data, sb, &journal_devnum, - &journal_ioprio, NULL, 0)) + &journal_ioprio, 0)) goto failed_mount; if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) { @@ -3416,7 +3277,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) #else es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH); #endif - sb->s_dirt = 1; } /* Handle clustersize */ @@ -3540,6 +3400,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) if (ext4_proc_root) sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root); + if (sbi->s_proc) + proc_create_data("options", S_IRUGO, sbi->s_proc, + &ext4_seq_options_fops, sb); + bgl_lock_init(sbi->s_blockgroup_lock); for (i = 0; i < db_count; i++) { @@ -3694,6 +3558,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } set_task_ioprio(sbi->s_journal->j_task, journal_ioprio); + sbi->s_journal->j_commit_callback = ext4_journal_commit_callback; + /* * The journal may have updated the bg summary counts, so we * need to update the global counters. @@ -3735,9 +3601,8 @@ no_journal: iput(root); goto failed_mount4; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { - iput(root); ext4_msg(sb, KERN_ERR, "get root dentry failed"); ret = -ENOMEM; goto failed_mount4; @@ -3862,6 +3727,7 @@ failed_mount2: ext4_kvfree(sbi->s_group_desc); failed_mount: if (sbi->s_proc) { + remove_proc_entry("options", sbi->s_proc); remove_proc_entry(sb->s_id, ext4_proc_root); } #ifdef CONFIG_QUOTA @@ -4091,15 +3957,6 @@ static int ext4_load_journal(struct super_block *sb, if (!(journal->j_flags & JBD2_BARRIER)) ext4_msg(sb, KERN_INFO, "barriers disabled"); - if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) { - err = jbd2_journal_update_format(journal); - if (err) { - ext4_msg(sb, KERN_ERR, "error updating journal"); - jbd2_journal_destroy(journal); - return err; - } - } - if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) err = jbd2_journal_wipe(journal, !really_read_only); if (!err) { @@ -4386,7 +4243,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) { struct ext4_super_block *es; struct ext4_sb_info *sbi = EXT4_SB(sb); - ext4_fsblk_t n_blocks_count = 0; unsigned long old_sb_flags; struct ext4_mount_options old_opts; int enable_quota = 0; @@ -4419,8 +4275,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) /* * Allow the "check" option to be passed as a remount option. */ - if (!parse_options(data, sb, NULL, &journal_ioprio, - &n_blocks_count, 1)) { + if (!parse_options(data, sb, NULL, &journal_ioprio, 1)) { err = -EINVAL; goto restore_opts; } @@ -4438,8 +4293,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) set_task_ioprio(sbi->s_journal->j_task, journal_ioprio); } - if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) || - n_blocks_count > ext4_blocks_count(es)) { + if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) { err = -EROFS; goto restore_opts; @@ -4514,8 +4368,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) if (sbi->s_journal) ext4_clear_journal_err(sb, es); sbi->s_mount_state = le16_to_cpu(es->s_state); - if ((err = ext4_group_extend(sb, es, n_blocks_count))) - goto restore_opts; if (!ext4_setup_super(sb, es, 0)) sb->s_flags &= ~MS_RDONLY; if (EXT4_HAS_INCOMPAT_FEATURE(sb, @@ -5056,6 +4908,9 @@ static int __init ext4_init_fs(void) { int i, err; + ext4_li_info = NULL; + mutex_init(&ext4_li_mtx); + ext4_check_flag_values(); for (i = 0; i < EXT4_WQ_HASH_SZ; i++) { @@ -5094,8 +4949,6 @@ static int __init ext4_init_fs(void) if (err) goto out; - ext4_li_info = NULL; - mutex_init(&ext4_li_mtx); return 0; out: unregister_as_ext2(); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 93a00d89a22..e88748e55c0 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -82,8 +82,8 @@ printk("\n"); \ } while (0) #else -# define ea_idebug(f...) -# define ea_bdebug(f...) +# define ea_idebug(inode, fmt, ...) no_printk(fmt, ##__VA_ARGS__) +# define ea_bdebug(bh, fmt, ...) no_printk(fmt, ##__VA_ARGS__) #endif static void ext4_xattr_cache_insert(struct buffer_head *); @@ -158,13 +158,10 @@ ext4_xattr_check_names(struct ext4_xattr_entry *entry, void *end) static inline int ext4_xattr_check_block(struct buffer_head *bh) { - int error; - if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) || BHDR(bh)->h_blocks != cpu_to_le32(1)) return -EIO; - error = ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size); - return error; + return ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size); } static inline int @@ -220,7 +217,8 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name, error = -ENODATA; if (!EXT4_I(inode)->i_file_acl) goto cleanup; - ea_idebug(inode, "reading block %u", EXT4_I(inode)->i_file_acl); + ea_idebug(inode, "reading block %llu", + (unsigned long long)EXT4_I(inode)->i_file_acl); bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl); if (!bh) goto cleanup; @@ -363,7 +361,8 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size) error = 0; if (!EXT4_I(inode)->i_file_acl) goto cleanup; - ea_idebug(inode, "reading block %u", EXT4_I(inode)->i_file_acl); + ea_idebug(inode, "reading block %llu", + (unsigned long long)EXT4_I(inode)->i_file_acl); bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl); error = -EIO; if (!bh) @@ -487,18 +486,19 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode, ext4_free_blocks(handle, inode, bh, 0, 1, EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET); + unlock_buffer(bh); } else { le32_add_cpu(&BHDR(bh)->h_refcount, -1); + if (ce) + mb_cache_entry_release(ce); + unlock_buffer(bh); error = ext4_handle_dirty_metadata(handle, inode, bh); if (IS_SYNC(inode)) ext4_handle_sync(handle); dquot_free_block(inode, 1); ea_bdebug(bh, "refcount now=%d; releasing", le32_to_cpu(BHDR(bh)->h_refcount)); - if (ce) - mb_cache_entry_release(ce); } - unlock_buffer(bh); out: ext4_std_error(inode->i_sb, error); return; @@ -834,7 +834,8 @@ inserted: if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) BUG_ON(block > EXT4_MAX_BLOCK_FILE_PHYS); - ea_idebug(inode, "creating block %d", block); + ea_idebug(inode, "creating block %llu", + (unsigned long long)block); new_bh = sb_getblk(sb, block); if (!new_bh) { diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 3ab841054d5..21687e31acc 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1496,11 +1496,13 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, root_inode->i_ino = MSDOS_ROOT_INO; root_inode->i_version = 1; error = fat_read_root(root_inode); - if (error < 0) + if (error < 0) { + iput(root_inode); goto out_fail; + } error = -ENOMEM; insert_inode_hash(root_inode); - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) { fat_msg(sb, KERN_ERR, "get root inode failed"); goto out_fail; @@ -1516,8 +1518,6 @@ out_invalid: out_fail: if (fat_inode) iput(fat_inode); - if (root_inode) - iput(root_inode); unload_nls(sbi->nls_io); unload_nls(sbi->nls_disk); if (sbi->options.iocharset != fat_default_iocharset) diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index a81eb2367d3..98ae804f527 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -521,57 +521,46 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname, op = &outname[*outlen * sizeof(wchar_t)]; } else { - if (nls) { - for (i = 0, ip = name, op = outname, *outlen = 0; - i < len && *outlen <= FAT_LFN_LEN; - *outlen += 1) - { - if (escape && (*ip == ':')) { - if (i > len - 5) - return -EINVAL; - ec = 0; - for (k = 1; k < 5; k++) { - nc = ip[k]; - ec <<= 4; - if (nc >= '0' && nc <= '9') { - ec |= nc - '0'; - continue; - } - if (nc >= 'a' && nc <= 'f') { - ec |= nc - ('a' - 10); - continue; - } - if (nc >= 'A' && nc <= 'F') { - ec |= nc - ('A' - 10); - continue; - } - return -EINVAL; + for (i = 0, ip = name, op = outname, *outlen = 0; + i < len && *outlen < FAT_LFN_LEN; + *outlen += 1) { + if (escape && (*ip == ':')) { + if (i > len - 5) + return -EINVAL; + ec = 0; + for (k = 1; k < 5; k++) { + nc = ip[k]; + ec <<= 4; + if (nc >= '0' && nc <= '9') { + ec |= nc - '0'; + continue; } - *op++ = ec & 0xFF; - *op++ = ec >> 8; - ip += 5; - i += 5; - } else { - if ((charlen = nls->char2uni(ip, len - i, (wchar_t *)op)) < 0) - return -EINVAL; - ip += charlen; - i += charlen; - op += 2; + if (nc >= 'a' && nc <= 'f') { + ec |= nc - ('a' - 10); + continue; + } + if (nc >= 'A' && nc <= 'F') { + ec |= nc - ('A' - 10); + continue; + } + return -EINVAL; } + *op++ = ec & 0xFF; + *op++ = ec >> 8; + ip += 5; + i += 5; + } else { + charlen = nls->char2uni(ip, len - i, + (wchar_t *)op); + if (charlen < 0) + return -EINVAL; + ip += charlen; + i += charlen; + op += 2; } - if (i < len) - return -ENAMETOOLONG; - } else { - for (i = 0, ip = name, op = outname, *outlen = 0; - i < len && *outlen <= FAT_LFN_LEN; - i++, *outlen += 1) - { - *op++ = *ip++; - *op++ = 0; - } - if (i < len) - return -ENAMETOOLONG; } + if (i < len) + return -ENAMETOOLONG; } *longlen = *outlen; diff --git a/fs/file.c b/fs/file.c index 4c6992d8f3b..3c426de7203 100644 --- a/fs/file.c +++ b/fs/file.c @@ -6,7 +6,7 @@ * Manage the dynamic fd arrays in the process files_struct. */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/fs.h> #include <linux/mm.h> #include <linux/mmzone.h> diff --git a/fs/file_table.c b/fs/file_table.c index 20002e39754..70f2a0fd6ae 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -204,7 +204,7 @@ EXPORT_SYMBOL(alloc_file); * to write to @file, along with access to write through * its vfsmount. */ -void drop_file_write_access(struct file *file) +static void drop_file_write_access(struct file *file) { struct vfsmount *mnt = file->f_path.mnt; struct dentry *dentry = file->f_path.dentry; @@ -219,7 +219,6 @@ void drop_file_write_access(struct file *file) mnt_drop_write(mnt); file_release_write(file); } -EXPORT_SYMBOL_GPL(drop_file_write_access); /* the real guts of fput() - releasing the last reference to file */ diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index 9d1c9955838..d4fabd26084 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -224,9 +224,8 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) ret = PTR_ERR(root); goto out; } - sbp->s_root = d_alloc_root(root); + sbp->s_root = d_make_root(root); if (!sbp->s_root) { - iput(root); printk(KERN_WARNING "vxfs: unable to get root dentry.\n"); goto out_free_ilist; } diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index f855916657b..539f36cf3e4 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -14,7 +14,7 @@ */ #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/sched.h> @@ -53,14 +53,6 @@ struct wb_writeback_work { }; /* - * Include the creation of the trace points after defining the - * wb_writeback_work structure so that the definition remains local to this - * file. - */ -#define CREATE_TRACE_POINTS -#include <trace/events/writeback.h> - -/* * We don't actually have pdflush, but this one is exported though /proc... */ int nr_pdflush_threads; @@ -92,6 +84,14 @@ static inline struct inode *wb_inode(struct list_head *head) return list_entry(head, struct inode, i_wb_list); } +/* + * Include the creation of the trace points after defining the + * wb_writeback_work structure and inline functions so that the definition + * remains local to this file. + */ +#define CREATE_TRACE_POINTS +#include <trace/events/writeback.h> + /* Wakeup flusher thread or forker thread to fork it. Requires bdi->wb_lock. */ static void bdi_wakeup_flusher(struct backing_dev_info *bdi) { @@ -256,7 +256,8 @@ static bool inode_dirtied_after(struct inode *inode, unsigned long t) } /* - * Move expired dirty inodes from @delaying_queue to @dispatch_queue. + * Move expired (dirtied after work->older_than_this) dirty inodes from + * @delaying_queue to @dispatch_queue. */ static int move_expired_inodes(struct list_head *delaying_queue, struct list_head *dispatch_queue, @@ -1148,23 +1149,6 @@ out_unlock_inode: } EXPORT_SYMBOL(__mark_inode_dirty); -/* - * Write out a superblock's list of dirty inodes. A wait will be performed - * upon no inodes, all inodes or the final one, depending upon sync_mode. - * - * If older_than_this is non-NULL, then only write out inodes which - * had their first dirtying at a time earlier than *older_than_this. - * - * If `bdi' is non-zero then we're being asked to writeback a specific queue. - * This function assumes that the blockdev superblock's inodes are backed by - * a variety of queues, so all inodes are searched. For other superblocks, - * assume that all inodes are backed by the same queue. - * - * The inodes to be written are parked on bdi->b_io. They are moved back onto - * bdi->b_dirty as they are selected for writing. This way, none can be missed - * on the writer throttling path, and we get decent balancing between many - * throttled threads: we don't want them all piling up on inode_sync_wait. - */ static void wait_sb_inodes(struct super_block *sb) { struct inode *inode, *old_inode = NULL; @@ -1284,7 +1268,7 @@ int writeback_inodes_sb_if_idle(struct super_block *sb, enum wb_reason reason) EXPORT_SYMBOL(writeback_inodes_sb_if_idle); /** - * writeback_inodes_sb_if_idle - start writeback if none underway + * writeback_inodes_sb_nr_if_idle - start writeback if none underway * @sb: the superblock * @nr: the number of pages to write * @reason: reason why some writeback work was initiated @@ -1364,8 +1348,6 @@ int write_inode_now(struct inode *inode, int sync) ret = writeback_single_inode(inode, wb, &wbc); spin_unlock(&inode->i_lock); spin_unlock(&wb->list_lock); - if (sync) - inode_sync_wait(inode); return ret; } EXPORT_SYMBOL(write_inode_now); diff --git a/fs/fs_struct.c b/fs/fs_struct.c index 78b519c1353..e159e682ad4 100644 --- a/fs/fs_struct.c +++ b/fs/fs_struct.c @@ -1,4 +1,4 @@ -#include <linux/module.h> +#include <linux/export.h> #include <linux/sched.h> #include <linux/fs.h> #include <linux/path.h> @@ -26,11 +26,11 @@ void set_fs_root(struct fs_struct *fs, struct path *path) { struct path old_root; + path_get_longterm(path); spin_lock(&fs->lock); write_seqcount_begin(&fs->seq); old_root = fs->root; fs->root = *path; - path_get_longterm(path); write_seqcount_end(&fs->seq); spin_unlock(&fs->lock); if (old_root.dentry) @@ -45,11 +45,11 @@ void set_fs_pwd(struct fs_struct *fs, struct path *path) { struct path old_pwd; + path_get_longterm(path); spin_lock(&fs->lock); write_seqcount_begin(&fs->seq); old_pwd = fs->pwd; fs->pwd = *path; - path_get_longterm(path); write_seqcount_end(&fs->seq); spin_unlock(&fs->lock); @@ -57,6 +57,14 @@ void set_fs_pwd(struct fs_struct *fs, struct path *path) path_put_longterm(&old_pwd); } +static inline int replace_path(struct path *p, const struct path *old, const struct path *new) +{ + if (likely(p->dentry != old->dentry || p->mnt != old->mnt)) + return 0; + *p = *new; + return 1; +} + void chroot_fs_refs(struct path *old_root, struct path *new_root) { struct task_struct *g, *p; @@ -68,21 +76,16 @@ void chroot_fs_refs(struct path *old_root, struct path *new_root) task_lock(p); fs = p->fs; if (fs) { + int hits = 0; spin_lock(&fs->lock); write_seqcount_begin(&fs->seq); - if (fs->root.dentry == old_root->dentry - && fs->root.mnt == old_root->mnt) { - path_get_longterm(new_root); - fs->root = *new_root; + hits += replace_path(&fs->root, old_root, new_root); + hits += replace_path(&fs->pwd, old_root, new_root); + write_seqcount_end(&fs->seq); + while (hits--) { count++; - } - if (fs->pwd.dentry == old_root->dentry - && fs->pwd.mnt == old_root->mnt) { path_get_longterm(new_root); - fs->pwd = *new_root; - count++; } - write_seqcount_end(&fs->seq); spin_unlock(&fs->lock); } task_unlock(p); @@ -107,10 +110,8 @@ void exit_fs(struct task_struct *tsk) int kill; task_lock(tsk); spin_lock(&fs->lock); - write_seqcount_begin(&fs->seq); tsk->fs = NULL; kill = !--fs->users; - write_seqcount_end(&fs->seq); spin_unlock(&fs->lock); task_unlock(tsk); if (kill) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 5f3368ab0fa..7df2b5e8fbe 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -838,10 +838,10 @@ static int fuse_copy_page(struct fuse_copy_state *cs, struct page **pagep, } } if (page) { - void *mapaddr = kmap_atomic(page, KM_USER0); + void *mapaddr = kmap_atomic(page); void *buf = mapaddr + offset; offset += fuse_copy_do(cs, &buf, &count); - kunmap_atomic(mapaddr, KM_USER0); + kunmap_atomic(mapaddr); } else offset += fuse_copy_do(cs, NULL, &count); } diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 4a199fd93fb..a841868bf9c 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1887,11 +1887,11 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg, in_iovs + out_iovs > FUSE_IOCTL_MAX_IOV) goto out; - vaddr = kmap_atomic(pages[0], KM_USER0); + vaddr = kmap_atomic(pages[0]); err = fuse_copy_ioctl_iovec(fc, iov_page, vaddr, transferred, in_iovs + out_iovs, (flags & FUSE_IOCTL_COMPAT) != 0); - kunmap_atomic(vaddr, KM_USER0); + kunmap_atomic(vaddr); if (err) goto out; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 64cf8d07393..4aec5995867 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -988,14 +988,9 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) err = -ENOMEM; root = fuse_get_root_inode(sb, d.rootmode); - if (!root) + root_dentry = d_make_root(root); + if (!root_dentry) goto err_put_conn; - - root_dentry = d_alloc_root(root); - if (!root_dentry) { - iput(root); - goto err_put_conn; - } /* only now - we want root dentry with NULL ->d_op */ sb->s_d_op = &fuse_dentry_operations; diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 501e5cba09b..38b7a74a0f9 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -434,12 +434,12 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) if (error) return error; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (dsize > (dibh->b_size - sizeof(struct gfs2_dinode))) dsize = (dibh->b_size - sizeof(struct gfs2_dinode)); memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); memset(kaddr + dsize, 0, PAGE_CACHE_SIZE - dsize); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); flush_dcache_page(page); brelse(dibh); SetPageUptodate(page); @@ -542,9 +542,9 @@ int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state, page = read_cache_page(mapping, index, __gfs2_readpage, NULL); if (IS_ERR(page)) return PTR_ERR(page); - p = kmap_atomic(page, KM_USER0); + p = kmap_atomic(page); memcpy(buf + copied, p + offset, amt); - kunmap_atomic(p, KM_USER0); + kunmap_atomic(p); mark_page_accessed(page); page_cache_release(page); copied += amt; @@ -788,11 +788,11 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh, unsigned char *buf = dibh->b_data + sizeof(struct gfs2_dinode); BUG_ON((pos + len) > (dibh->b_size - sizeof(struct gfs2_dinode))); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(buf + pos, kaddr + pos, copied); memset(kaddr + pos + copied, 0, len - copied); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (!PageUptodate(page)) SetPageUptodate(page); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 14a70401597..197c5c47e57 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -60,7 +60,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, int release = 0; if (!page || page->index) { - page = grab_cache_page(inode->i_mapping, 0); + page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS); if (!page) return -ENOMEM; release = 1; @@ -930,7 +930,7 @@ static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from) struct page *page; int err; - page = grab_cache_page(mapping, index); + page = find_or_create_page(mapping, index, GFP_NOFS); if (!page) return 0; diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index c5fb3597f69..76834587a8a 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -313,6 +313,8 @@ static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return gfs2_get_flags(filp, (u32 __user *)arg); case FS_IOC_SETFLAGS: return gfs2_set_flags(filp, (u32 __user *)arg); + case FITRIM: + return gfs2_fitrim(filp, (void __user *)arg); } return -ENOTTY; } @@ -674,6 +676,7 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len, struct gfs2_inode *ip = GFS2_I(inode); struct buffer_head *dibh; int error; + loff_t size = len; unsigned int nr_blks; sector_t lblock = offset >> inode->i_blkbits; @@ -707,8 +710,8 @@ static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len, goto out; } } - if (offset + len > inode->i_size && !(mode & FALLOC_FL_KEEP_SIZE)) - i_size_write(inode, offset + len); + if (offset + size > inode->i_size && !(mode & FALLOC_FL_KEEP_SIZE)) + i_size_write(inode, offset + size); mark_inode_dirty(inode); @@ -777,12 +780,14 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, if (unlikely(error)) goto out_uninit; - if (!gfs2_write_alloc_required(ip, offset, len)) - goto out_unlock; - while (len > 0) { if (len < bytes) bytes = len; + if (!gfs2_write_alloc_required(ip, offset, bytes)) { + len -= bytes; + offset += bytes; + continue; + } qa = gfs2_qadata_get(ip); if (!qa) { error = -ENOMEM; diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 376816fcd04..dab2526071c 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -29,6 +29,7 @@ #include <linux/rcupdate.h> #include <linux/rculist_bl.h> #include <linux/bit_spinlock.h> +#include <linux/percpu.h> #include "gfs2.h" #include "incore.h" @@ -167,14 +168,19 @@ void gfs2_glock_add_to_lru(struct gfs2_glock *gl) spin_unlock(&lru_lock); } -static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) +static void __gfs2_glock_remove_from_lru(struct gfs2_glock *gl) { - spin_lock(&lru_lock); if (!list_empty(&gl->gl_lru)) { list_del_init(&gl->gl_lru); atomic_dec(&lru_count); clear_bit(GLF_LRU, &gl->gl_flags); } +} + +static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) +{ + spin_lock(&lru_lock); + __gfs2_glock_remove_from_lru(gl); spin_unlock(&lru_lock); } @@ -217,11 +223,12 @@ void gfs2_glock_put(struct gfs2_glock *gl) struct gfs2_sbd *sdp = gl->gl_sbd; struct address_space *mapping = gfs2_glock2aspace(gl); - if (atomic_dec_and_test(&gl->gl_ref)) { + if (atomic_dec_and_lock(&gl->gl_ref, &lru_lock)) { + __gfs2_glock_remove_from_lru(gl); + spin_unlock(&lru_lock); spin_lock_bucket(gl->gl_hash); hlist_bl_del_rcu(&gl->gl_list); spin_unlock_bucket(gl->gl_hash); - gfs2_glock_remove_from_lru(gl); GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders)); GLOCK_BUG_ON(gl, mapping && mapping->nrpages); trace_gfs2_glock_put(gl); @@ -537,6 +544,11 @@ __acquires(&gl->gl_spin) do_error(gl, 0); /* Fail queued try locks */ } gl->gl_req = target; + set_bit(GLF_BLOCKING, &gl->gl_flags); + if ((gl->gl_req == LM_ST_UNLOCKED) || + (gl->gl_state == LM_ST_EXCLUSIVE) || + (lck_flags & (LM_FLAG_TRY|LM_FLAG_TRY_1CB))) + clear_bit(GLF_BLOCKING, &gl->gl_flags); spin_unlock(&gl->gl_spin); if (glops->go_xmote_th) glops->go_xmote_th(gl); @@ -738,6 +750,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, return -ENOMEM; atomic_inc(&sdp->sd_glock_disposal); + gl->gl_sbd = sdp; gl->gl_flags = 0; gl->gl_name = name; atomic_set(&gl->gl_ref, 1); @@ -746,12 +759,17 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, gl->gl_demote_state = LM_ST_EXCLUSIVE; gl->gl_hash = hash; gl->gl_ops = glops; - snprintf(gl->gl_strname, GDLM_STRNAME_BYTES, "%8x%16llx", name.ln_type, (unsigned long long)number); + gl->gl_dstamp = ktime_set(0, 0); + preempt_disable(); + /* We use the global stats to estimate the initial per-glock stats */ + gl->gl_stats = this_cpu_ptr(sdp->sd_lkstats)->lkstats[glops->go_type]; + preempt_enable(); + gl->gl_stats.stats[GFS2_LKS_DCOUNT] = 0; + gl->gl_stats.stats[GFS2_LKS_QCOUNT] = 0; memset(&gl->gl_lksb, 0, sizeof(struct dlm_lksb)); gl->gl_lksb.sb_lvbptr = gl->gl_lvb; gl->gl_tchange = jiffies; gl->gl_object = NULL; - gl->gl_sbd = sdp; gl->gl_hold_time = GL_GLOCK_DFT_HOLD; INIT_DELAYED_WORK(&gl->gl_work, glock_work_func); INIT_WORK(&gl->gl_delete, delete_work_func); @@ -993,6 +1011,8 @@ fail: } set_bit(GLF_QUEUED, &gl->gl_flags); trace_gfs2_glock_queue(gh, 1); + gfs2_glstats_inc(gl, GFS2_LKS_QCOUNT); + gfs2_sbstats_inc(gl, GFS2_LKS_QCOUNT); if (likely(insert_pt == NULL)) { list_add_tail(&gh->gh_list, &gl->gl_holders); if (unlikely(gh->gh_flags & LM_FLAG_PRIORITY)) @@ -1652,6 +1672,8 @@ static const char *gflags2str(char *buf, const struct gfs2_glock *gl) *p++ = 'L'; if (gl->gl_object) *p++ = 'o'; + if (test_bit(GLF_BLOCKING, gflags)) + *p++ = 'b'; *p = 0; return buf; } @@ -1708,8 +1730,78 @@ out: return error; } +static int gfs2_glstats_seq_show(struct seq_file *seq, void *iter_ptr) +{ + struct gfs2_glock *gl = iter_ptr; + seq_printf(seq, "G: n:%u/%llx rtt:%lld/%lld rttb:%lld/%lld irt:%lld/%lld dcnt: %lld qcnt: %lld\n", + gl->gl_name.ln_type, + (unsigned long long)gl->gl_name.ln_number, + (long long)gl->gl_stats.stats[GFS2_LKS_SRTT], + (long long)gl->gl_stats.stats[GFS2_LKS_SRTTVAR], + (long long)gl->gl_stats.stats[GFS2_LKS_SRTTB], + (long long)gl->gl_stats.stats[GFS2_LKS_SRTTVARB], + (long long)gl->gl_stats.stats[GFS2_LKS_SIRT], + (long long)gl->gl_stats.stats[GFS2_LKS_SIRTVAR], + (long long)gl->gl_stats.stats[GFS2_LKS_DCOUNT], + (long long)gl->gl_stats.stats[GFS2_LKS_QCOUNT]); + return 0; +} + +static const char *gfs2_gltype[] = { + "type", + "reserved", + "nondisk", + "inode", + "rgrp", + "meta", + "iopen", + "flock", + "plock", + "quota", + "journal", +}; + +static const char *gfs2_stype[] = { + [GFS2_LKS_SRTT] = "srtt", + [GFS2_LKS_SRTTVAR] = "srttvar", + [GFS2_LKS_SRTTB] = "srttb", + [GFS2_LKS_SRTTVARB] = "srttvarb", + [GFS2_LKS_SIRT] = "sirt", + [GFS2_LKS_SIRTVAR] = "sirtvar", + [GFS2_LKS_DCOUNT] = "dlm", + [GFS2_LKS_QCOUNT] = "queue", +}; + +#define GFS2_NR_SBSTATS (ARRAY_SIZE(gfs2_gltype) * ARRAY_SIZE(gfs2_stype)) + +static int gfs2_sbstats_seq_show(struct seq_file *seq, void *iter_ptr) +{ + struct gfs2_glock_iter *gi = seq->private; + struct gfs2_sbd *sdp = gi->sdp; + unsigned index = gi->hash >> 3; + unsigned subindex = gi->hash & 0x07; + s64 value; + int i; + + if (index == 0 && subindex != 0) + return 0; + seq_printf(seq, "%-10s %8s:", gfs2_gltype[index], + (index == 0) ? "cpu": gfs2_stype[subindex]); + + for_each_possible_cpu(i) { + const struct gfs2_pcpu_lkstats *lkstats = per_cpu_ptr(sdp->sd_lkstats, i); + if (index == 0) { + value = i; + } else { + value = lkstats->lkstats[index - 1].stats[subindex]; + } + seq_printf(seq, " %15lld", (long long)value); + } + seq_putc(seq, '\n'); + return 0; +} int __init gfs2_glock_init(void) { @@ -1822,6 +1914,35 @@ static int gfs2_glock_seq_show(struct seq_file *seq, void *iter_ptr) return dump_glock(seq, iter_ptr); } +static void *gfs2_sbstats_seq_start(struct seq_file *seq, loff_t *pos) +{ + struct gfs2_glock_iter *gi = seq->private; + + gi->hash = *pos; + if (*pos >= GFS2_NR_SBSTATS) + return NULL; + preempt_disable(); + return SEQ_START_TOKEN; +} + +static void *gfs2_sbstats_seq_next(struct seq_file *seq, void *iter_ptr, + loff_t *pos) +{ + struct gfs2_glock_iter *gi = seq->private; + (*pos)++; + gi->hash++; + if (gi->hash >= GFS2_NR_SBSTATS) { + preempt_enable(); + return NULL; + } + return SEQ_START_TOKEN; +} + +static void gfs2_sbstats_seq_stop(struct seq_file *seq, void *iter_ptr) +{ + preempt_enable(); +} + static const struct seq_operations gfs2_glock_seq_ops = { .start = gfs2_glock_seq_start, .next = gfs2_glock_seq_next, @@ -1829,7 +1950,21 @@ static const struct seq_operations gfs2_glock_seq_ops = { .show = gfs2_glock_seq_show, }; -static int gfs2_debugfs_open(struct inode *inode, struct file *file) +static const struct seq_operations gfs2_glstats_seq_ops = { + .start = gfs2_glock_seq_start, + .next = gfs2_glock_seq_next, + .stop = gfs2_glock_seq_stop, + .show = gfs2_glstats_seq_show, +}; + +static const struct seq_operations gfs2_sbstats_seq_ops = { + .start = gfs2_sbstats_seq_start, + .next = gfs2_sbstats_seq_next, + .stop = gfs2_sbstats_seq_stop, + .show = gfs2_sbstats_seq_show, +}; + +static int gfs2_glocks_open(struct inode *inode, struct file *file) { int ret = seq_open_private(file, &gfs2_glock_seq_ops, sizeof(struct gfs2_glock_iter)); @@ -1841,9 +1976,49 @@ static int gfs2_debugfs_open(struct inode *inode, struct file *file) return ret; } -static const struct file_operations gfs2_debug_fops = { +static int gfs2_glstats_open(struct inode *inode, struct file *file) +{ + int ret = seq_open_private(file, &gfs2_glstats_seq_ops, + sizeof(struct gfs2_glock_iter)); + if (ret == 0) { + struct seq_file *seq = file->private_data; + struct gfs2_glock_iter *gi = seq->private; + gi->sdp = inode->i_private; + } + return ret; +} + +static int gfs2_sbstats_open(struct inode *inode, struct file *file) +{ + int ret = seq_open_private(file, &gfs2_sbstats_seq_ops, + sizeof(struct gfs2_glock_iter)); + if (ret == 0) { + struct seq_file *seq = file->private_data; + struct gfs2_glock_iter *gi = seq->private; + gi->sdp = inode->i_private; + } + return ret; +} + +static const struct file_operations gfs2_glocks_fops = { + .owner = THIS_MODULE, + .open = gfs2_glocks_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +static const struct file_operations gfs2_glstats_fops = { + .owner = THIS_MODULE, + .open = gfs2_glstats_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +static const struct file_operations gfs2_sbstats_fops = { .owner = THIS_MODULE, - .open = gfs2_debugfs_open, + .open = gfs2_sbstats_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, @@ -1857,20 +2032,45 @@ int gfs2_create_debugfs_file(struct gfs2_sbd *sdp) sdp->debugfs_dentry_glocks = debugfs_create_file("glocks", S_IFREG | S_IRUGO, sdp->debugfs_dir, sdp, - &gfs2_debug_fops); + &gfs2_glocks_fops); if (!sdp->debugfs_dentry_glocks) - return -ENOMEM; + goto fail; + + sdp->debugfs_dentry_glstats = debugfs_create_file("glstats", + S_IFREG | S_IRUGO, + sdp->debugfs_dir, sdp, + &gfs2_glstats_fops); + if (!sdp->debugfs_dentry_glstats) + goto fail; + + sdp->debugfs_dentry_sbstats = debugfs_create_file("sbstats", + S_IFREG | S_IRUGO, + sdp->debugfs_dir, sdp, + &gfs2_sbstats_fops); + if (!sdp->debugfs_dentry_sbstats) + goto fail; return 0; +fail: + gfs2_delete_debugfs_file(sdp); + return -ENOMEM; } void gfs2_delete_debugfs_file(struct gfs2_sbd *sdp) { - if (sdp && sdp->debugfs_dir) { + if (sdp->debugfs_dir) { if (sdp->debugfs_dentry_glocks) { debugfs_remove(sdp->debugfs_dentry_glocks); sdp->debugfs_dentry_glocks = NULL; } + if (sdp->debugfs_dentry_glstats) { + debugfs_remove(sdp->debugfs_dentry_glstats); + sdp->debugfs_dentry_glstats = NULL; + } + if (sdp->debugfs_dentry_sbstats) { + debugfs_remove(sdp->debugfs_dentry_sbstats); + sdp->debugfs_dentry_sbstats = NULL; + } debugfs_remove(sdp->debugfs_dir); sdp->debugfs_dir = NULL; } diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 97742a7ea9c..47d0bda5ac2 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -19,6 +19,8 @@ #include <linux/rculist_bl.h> #include <linux/completion.h> #include <linux/rbtree.h> +#include <linux/ktime.h> +#include <linux/percpu.h> #define DIO_WAIT 0x00000010 #define DIO_METADATA 0x00000020 @@ -205,6 +207,22 @@ struct gfs2_glock_operations { }; enum { + GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ + GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ + GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ + GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ + GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ + GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ + GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ + GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ + GFS2_NR_LKSTATS +}; + +struct gfs2_lkstats { + s64 stats[GFS2_NR_LKSTATS]; +}; + +enum { /* States */ HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ HIF_FIRST = 7, @@ -238,10 +256,12 @@ enum { GLF_QUEUED = 12, GLF_LRU = 13, GLF_OBJECT = 14, /* Used only for tracing */ + GLF_BLOCKING = 15, }; struct gfs2_glock { struct hlist_bl_node gl_list; + struct gfs2_sbd *gl_sbd; unsigned long gl_flags; /* GLF_... */ struct lm_lockname gl_name; atomic_t gl_ref; @@ -261,16 +281,14 @@ struct gfs2_glock { struct list_head gl_holders; const struct gfs2_glock_operations *gl_ops; - char gl_strname[GDLM_STRNAME_BYTES]; + ktime_t gl_dstamp; + struct gfs2_lkstats gl_stats; struct dlm_lksb gl_lksb; char gl_lvb[32]; unsigned long gl_tchange; void *gl_object; struct list_head gl_lru; - - struct gfs2_sbd *gl_sbd; - struct list_head gl_ail_list; atomic_t gl_ail_count; atomic_t gl_revokes; @@ -560,8 +578,14 @@ struct lm_lockstruct { uint32_t *ls_recover_result; /* result of last jid recovery */ }; +struct gfs2_pcpu_lkstats { + /* One struct for each glock type */ + struct gfs2_lkstats lkstats[10]; +}; + struct gfs2_sbd { struct super_block *sd_vfs; + struct gfs2_pcpu_lkstats __percpu *sd_lkstats; struct kobject sd_kobj; unsigned long sd_flags; /* SDF_... */ struct gfs2_sb_host sd_sb; @@ -620,7 +644,6 @@ struct gfs2_sbd { int sd_rindex_uptodate; spinlock_t sd_rindex_spin; - struct mutex sd_rindex_mutex; struct rb_root sd_rindex_tree; unsigned int sd_rgrps; unsigned int sd_max_rg_data; @@ -725,8 +748,23 @@ struct gfs2_sbd { unsigned long sd_last_warning; struct dentry *debugfs_dir; /* debugfs directory */ - struct dentry *debugfs_dentry_glocks; /* for debugfs */ + struct dentry *debugfs_dentry_glocks; + struct dentry *debugfs_dentry_glstats; + struct dentry *debugfs_dentry_sbstats; }; +static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) +{ + gl->gl_stats.stats[which]++; +} + +static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) +{ + const struct gfs2_sbd *sdp = gl->gl_sbd; + preempt_disable(); + this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; + preempt_enable(); +} + #endif /* __INCORE_DOT_H__ */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index a7d611b93f0..c98a60ee6df 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -391,10 +391,6 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation) int error; int dblocks = 1; - error = gfs2_rindex_update(sdp); - if (error) - fs_warn(sdp, "rindex update returns %d\n", error); - error = gfs2_inplace_reserve(dip, RES_DINODE); if (error) goto out; @@ -1040,9 +1036,10 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry) gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); - rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr); + rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); if (!rgd) goto out_inodes; + gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); @@ -1258,7 +1255,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, * this is the case of the target file already existing * so we unlink before doing the rename */ - nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr); + nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1); if (nrgd) gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); } diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index 8944d1e32ab..f8411bd1b80 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -18,14 +18,106 @@ #include "glock.h" #include "util.h" #include "sys.h" +#include "trace_gfs2.h" extern struct workqueue_struct *gfs2_control_wq; +/** + * gfs2_update_stats - Update time based stats + * @mv: Pointer to mean/variance structure to update + * @sample: New data to include + * + * @delta is the difference between the current rtt sample and the + * running average srtt. We add 1/8 of that to the srtt in order to + * update the current srtt estimate. The varience estimate is a bit + * more complicated. We subtract the abs value of the @delta from + * the current variance estimate and add 1/4 of that to the running + * total. + * + * Note that the index points at the array entry containing the smoothed + * mean value, and the variance is always in the following entry + * + * Reference: TCP/IP Illustrated, vol 2, p. 831,832 + * All times are in units of integer nanoseconds. Unlike the TCP/IP case, + * they are not scaled fixed point. + */ + +static inline void gfs2_update_stats(struct gfs2_lkstats *s, unsigned index, + s64 sample) +{ + s64 delta = sample - s->stats[index]; + s->stats[index] += (delta >> 3); + index++; + s->stats[index] += ((abs64(delta) - s->stats[index]) >> 2); +} + +/** + * gfs2_update_reply_times - Update locking statistics + * @gl: The glock to update + * + * This assumes that gl->gl_dstamp has been set earlier. + * + * The rtt (lock round trip time) is an estimate of the time + * taken to perform a dlm lock request. We update it on each + * reply from the dlm. + * + * The blocking flag is set on the glock for all dlm requests + * which may potentially block due to lock requests from other nodes. + * DLM requests where the current lock state is exclusive, the + * requested state is null (or unlocked) or where the TRY or + * TRY_1CB flags are set are classified as non-blocking. All + * other DLM requests are counted as (potentially) blocking. + */ +static inline void gfs2_update_reply_times(struct gfs2_glock *gl) +{ + struct gfs2_pcpu_lkstats *lks; + const unsigned gltype = gl->gl_name.ln_type; + unsigned index = test_bit(GLF_BLOCKING, &gl->gl_flags) ? + GFS2_LKS_SRTTB : GFS2_LKS_SRTT; + s64 rtt; + + preempt_disable(); + rtt = ktime_to_ns(ktime_sub(ktime_get_real(), gl->gl_dstamp)); + lks = this_cpu_ptr(gl->gl_sbd->sd_lkstats); + gfs2_update_stats(&gl->gl_stats, index, rtt); /* Local */ + gfs2_update_stats(&lks->lkstats[gltype], index, rtt); /* Global */ + preempt_enable(); + + trace_gfs2_glock_lock_time(gl, rtt); +} + +/** + * gfs2_update_request_times - Update locking statistics + * @gl: The glock to update + * + * The irt (lock inter-request times) measures the average time + * between requests to the dlm. It is updated immediately before + * each dlm call. + */ + +static inline void gfs2_update_request_times(struct gfs2_glock *gl) +{ + struct gfs2_pcpu_lkstats *lks; + const unsigned gltype = gl->gl_name.ln_type; + ktime_t dstamp; + s64 irt; + + preempt_disable(); + dstamp = gl->gl_dstamp; + gl->gl_dstamp = ktime_get_real(); + irt = ktime_to_ns(ktime_sub(gl->gl_dstamp, dstamp)); + lks = this_cpu_ptr(gl->gl_sbd->sd_lkstats); + gfs2_update_stats(&gl->gl_stats, GFS2_LKS_SIRT, irt); /* Local */ + gfs2_update_stats(&lks->lkstats[gltype], GFS2_LKS_SIRT, irt); /* Global */ + preempt_enable(); +} + static void gdlm_ast(void *arg) { struct gfs2_glock *gl = arg; unsigned ret = gl->gl_state; + gfs2_update_reply_times(gl); BUG_ON(gl->gl_lksb.sb_flags & DLM_SBF_DEMOTED); if (gl->gl_lksb.sb_flags & DLM_SBF_VALNOTVALID) @@ -111,7 +203,7 @@ static int make_mode(const unsigned int lmstate) static u32 make_flags(const u32 lkid, const unsigned int gfs_flags, const int req) { - u32 lkf = 0; + u32 lkf = DLM_LKF_VALBLK; if (gfs_flags & LM_FLAG_TRY) lkf |= DLM_LKF_NOQUEUE; @@ -138,26 +230,43 @@ static u32 make_flags(const u32 lkid, const unsigned int gfs_flags, if (lkid != 0) lkf |= DLM_LKF_CONVERT; - lkf |= DLM_LKF_VALBLK; - return lkf; } +static void gfs2_reverse_hex(char *c, u64 value) +{ + while (value) { + *c-- = hex_asc[value & 0x0f]; + value >>= 4; + } +} + static int gdlm_lock(struct gfs2_glock *gl, unsigned int req_state, unsigned int flags) { struct lm_lockstruct *ls = &gl->gl_sbd->sd_lockstruct; int req; u32 lkf; + char strname[GDLM_STRNAME_BYTES] = ""; req = make_mode(req_state); lkf = make_flags(gl->gl_lksb.sb_lkid, flags, req); - + gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT); + gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT); + if (gl->gl_lksb.sb_lkid) { + gfs2_update_request_times(gl); + } else { + memset(strname, ' ', GDLM_STRNAME_BYTES - 1); + strname[GDLM_STRNAME_BYTES - 1] = '\0'; + gfs2_reverse_hex(strname + 7, gl->gl_name.ln_type); + gfs2_reverse_hex(strname + 23, gl->gl_name.ln_number); + gl->gl_dstamp = ktime_get_real(); + } /* * Submit the actual lock request. */ - return dlm_lock(ls->ls_dlm, req, &gl->gl_lksb, lkf, gl->gl_strname, + return dlm_lock(ls->ls_dlm, req, &gl->gl_lksb, lkf, strname, GDLM_STRNAME_BYTES - 1, 0, gdlm_ast, gl, gdlm_bast); } @@ -172,6 +281,10 @@ static void gdlm_put_lock(struct gfs2_glock *gl) return; } + clear_bit(GLF_BLOCKING, &gl->gl_flags); + gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT); + gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT); + gfs2_update_request_times(gl); error = dlm_unlock(ls->ls_dlm, gl->gl_lksb.sb_lkid, DLM_LKF_VALBLK, NULL, gl); if (error) { diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 756fae9eaf8..4752eadc7f6 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -19,6 +19,7 @@ #include <linux/freezer.h> #include <linux/bio.h> #include <linux/writeback.h> +#include <linux/list_sort.h> #include "gfs2.h" #include "incore.h" @@ -358,7 +359,7 @@ retry: return 0; } -static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn) +u64 gfs2_log_bmap(struct gfs2_sbd *sdp, unsigned int lbn) { struct gfs2_journal_extent *je; @@ -467,8 +468,8 @@ static unsigned int current_tail(struct gfs2_sbd *sdp) void gfs2_log_incr_head(struct gfs2_sbd *sdp) { - if (sdp->sd_log_flush_head == sdp->sd_log_tail) - BUG_ON(sdp->sd_log_flush_head != sdp->sd_log_head); + BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && + (sdp->sd_log_flush_head != sdp->sd_log_head)); if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { sdp->sd_log_flush_head = 0; @@ -476,99 +477,6 @@ void gfs2_log_incr_head(struct gfs2_sbd *sdp) } } -/** - * gfs2_log_write_endio - End of I/O for a log buffer - * @bh: The buffer head - * @uptodate: I/O Status - * - */ - -static void gfs2_log_write_endio(struct buffer_head *bh, int uptodate) -{ - struct gfs2_sbd *sdp = bh->b_private; - bh->b_private = NULL; - - end_buffer_write_sync(bh, uptodate); - if (atomic_dec_and_test(&sdp->sd_log_in_flight)) - wake_up(&sdp->sd_log_flush_wait); -} - -/** - * gfs2_log_get_buf - Get and initialize a buffer to use for log control data - * @sdp: The GFS2 superblock - * - * Returns: the buffer_head - */ - -struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp) -{ - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); - struct buffer_head *bh; - - bh = sb_getblk(sdp->sd_vfs, blkno); - lock_buffer(bh); - memset(bh->b_data, 0, bh->b_size); - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); - gfs2_log_incr_head(sdp); - atomic_inc(&sdp->sd_log_in_flight); - bh->b_private = sdp; - bh->b_end_io = gfs2_log_write_endio; - - return bh; -} - -/** - * gfs2_fake_write_endio - - * @bh: The buffer head - * @uptodate: The I/O Status - * - */ - -static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate) -{ - struct buffer_head *real_bh = bh->b_private; - struct gfs2_bufdata *bd = real_bh->b_private; - struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd; - - end_buffer_write_sync(bh, uptodate); - free_buffer_head(bh); - unlock_buffer(real_bh); - brelse(real_bh); - if (atomic_dec_and_test(&sdp->sd_log_in_flight)) - wake_up(&sdp->sd_log_flush_wait); -} - -/** - * gfs2_log_fake_buf - Build a fake buffer head to write metadata buffer to log - * @sdp: the filesystem - * @data: the data the buffer_head should point to - * - * Returns: the log buffer descriptor - */ - -struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, - struct buffer_head *real) -{ - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); - struct buffer_head *bh; - - bh = alloc_buffer_head(GFP_NOFS | __GFP_NOFAIL); - atomic_set(&bh->b_count, 1); - bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock); - set_bh_page(bh, real->b_page, bh_offset(real)); - bh->b_blocknr = blkno; - bh->b_size = sdp->sd_sb.sb_bsize; - bh->b_bdev = sdp->sd_vfs->s_bdev; - bh->b_private = real; - bh->b_end_io = gfs2_fake_write_endio; - - gfs2_log_incr_head(sdp); - atomic_inc(&sdp->sd_log_in_flight); - - return bh; -} - static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail) { unsigned int dist = log_distance(sdp, new_tail, sdp->sd_log_tail); @@ -583,66 +491,8 @@ static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail) sdp->sd_log_tail = new_tail; } -/** - * log_write_header - Get and initialize a journal header buffer - * @sdp: The GFS2 superblock - * - * Returns: the initialized log buffer descriptor - */ - -static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull) -{ - u64 blkno = log_bmap(sdp, sdp->sd_log_flush_head); - struct buffer_head *bh; - struct gfs2_log_header *lh; - unsigned int tail; - u32 hash; - - bh = sb_getblk(sdp->sd_vfs, blkno); - lock_buffer(bh); - memset(bh->b_data, 0, bh->b_size); - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); - - gfs2_ail1_empty(sdp); - tail = current_tail(sdp); - - lh = (struct gfs2_log_header *)bh->b_data; - memset(lh, 0, sizeof(struct gfs2_log_header)); - lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC); - lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH); - lh->lh_header.__pad0 = cpu_to_be64(0); - lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH); - lh->lh_header.mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); - lh->lh_sequence = cpu_to_be64(sdp->sd_log_sequence++); - lh->lh_flags = cpu_to_be32(flags); - lh->lh_tail = cpu_to_be32(tail); - lh->lh_blkno = cpu_to_be32(sdp->sd_log_flush_head); - hash = gfs2_disk_hash(bh->b_data, sizeof(struct gfs2_log_header)); - lh->lh_hash = cpu_to_be32(hash); - - bh->b_end_io = end_buffer_write_sync; - get_bh(bh); - if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) - submit_bh(WRITE_SYNC | REQ_META | REQ_PRIO, bh); - else - submit_bh(WRITE_FLUSH_FUA | REQ_META, bh); - wait_on_buffer(bh); - if (!buffer_uptodate(bh)) - gfs2_io_error_bh(sdp, bh); - brelse(bh); - - if (sdp->sd_log_tail != tail) - log_pull_tail(sdp, tail); - else - gfs2_assert_withdraw(sdp, !pull); - - sdp->sd_log_idle = (tail == sdp->sd_log_flush_head); - gfs2_log_incr_head(sdp); -} - -static void log_flush_commit(struct gfs2_sbd *sdp) +static void log_flush_wait(struct gfs2_sbd *sdp) { DEFINE_WAIT(wait); @@ -655,8 +505,20 @@ static void log_flush_commit(struct gfs2_sbd *sdp) } while(atomic_read(&sdp->sd_log_in_flight)); finish_wait(&sdp->sd_log_flush_wait, &wait); } +} + +static int bd_cmp(void *priv, struct list_head *a, struct list_head *b) +{ + struct gfs2_bufdata *bda, *bdb; + + bda = list_entry(a, struct gfs2_bufdata, bd_le.le_list); + bdb = list_entry(b, struct gfs2_bufdata, bd_le.le_list); - log_write_header(sdp, 0, 0); + if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) + return -1; + if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) + return 1; + return 0; } static void gfs2_ordered_write(struct gfs2_sbd *sdp) @@ -666,6 +528,7 @@ static void gfs2_ordered_write(struct gfs2_sbd *sdp) LIST_HEAD(written); gfs2_log_lock(sdp); + list_sort(NULL, &sdp->sd_log_le_ordered, &bd_cmp); while (!list_empty(&sdp->sd_log_le_ordered)) { bd = list_entry(sdp->sd_log_le_ordered.next, struct gfs2_bufdata, bd_le.le_list); list_move(&bd->bd_le.le_list, &written); @@ -711,6 +574,68 @@ static void gfs2_ordered_wait(struct gfs2_sbd *sdp) } /** + * log_write_header - Get and initialize a journal header buffer + * @sdp: The GFS2 superblock + * + * Returns: the initialized log buffer descriptor + */ + +static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull) +{ + u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); + struct buffer_head *bh; + struct gfs2_log_header *lh; + unsigned int tail; + u32 hash; + + bh = sb_getblk(sdp->sd_vfs, blkno); + lock_buffer(bh); + memset(bh->b_data, 0, bh->b_size); + set_buffer_uptodate(bh); + clear_buffer_dirty(bh); + + gfs2_ail1_empty(sdp); + tail = current_tail(sdp); + + lh = (struct gfs2_log_header *)bh->b_data; + memset(lh, 0, sizeof(struct gfs2_log_header)); + lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC); + lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH); + lh->lh_header.__pad0 = cpu_to_be64(0); + lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH); + lh->lh_header.mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); + lh->lh_sequence = cpu_to_be64(sdp->sd_log_sequence++); + lh->lh_flags = cpu_to_be32(flags); + lh->lh_tail = cpu_to_be32(tail); + lh->lh_blkno = cpu_to_be32(sdp->sd_log_flush_head); + hash = gfs2_disk_hash(bh->b_data, sizeof(struct gfs2_log_header)); + lh->lh_hash = cpu_to_be32(hash); + + bh->b_end_io = end_buffer_write_sync; + get_bh(bh); + if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) { + gfs2_ordered_wait(sdp); + log_flush_wait(sdp); + submit_bh(WRITE_SYNC | REQ_META | REQ_PRIO, bh); + } else { + submit_bh(WRITE_FLUSH_FUA | REQ_META, bh); + } + wait_on_buffer(bh); + + if (!buffer_uptodate(bh)) + gfs2_io_error_bh(sdp, bh); + brelse(bh); + + if (sdp->sd_log_tail != tail) + log_pull_tail(sdp, tail); + else + gfs2_assert_withdraw(sdp, !pull); + + sdp->sd_log_idle = (tail == sdp->sd_log_flush_head); + gfs2_log_incr_head(sdp); +} + +/** * gfs2_log_flush - flush incore transaction(s) * @sdp: the filesystem * @gl: The glock structure to flush. If NULL, flush the whole incore log @@ -753,11 +678,10 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) gfs2_ordered_write(sdp); lops_before_commit(sdp); - gfs2_ordered_wait(sdp); - if (sdp->sd_log_head != sdp->sd_log_flush_head) - log_flush_commit(sdp); - else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){ + if (sdp->sd_log_head != sdp->sd_log_flush_head) { + log_write_header(sdp, 0, 0); + } else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){ gfs2_log_lock(sdp); atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ trace_gfs2_log_blocks(sdp, -1); diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h index ab0621698b7..ff07454b582 100644 --- a/fs/gfs2/log.h +++ b/fs/gfs2/log.h @@ -53,10 +53,7 @@ extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); extern void gfs2_log_incr_head(struct gfs2_sbd *sdp); - -extern struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp); -extern struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, - struct buffer_head *real); +extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp, unsigned int lbn); extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 0301be655b1..6b1efb594d9 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -12,6 +12,7 @@ #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> +#include <linux/mempool.h> #include <linux/gfs2_ondisk.h> #include <linux/bio.h> #include <linux/fs.h> @@ -76,7 +77,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd) if (bi->bi_clone == 0) return; if (sdp->sd_args.ar_discard) - gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi); + gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); memcpy(bi->bi_clone + bi->bi_offset, bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); clear_bit(GBF_FULL, &bi->bi_flags); @@ -143,6 +144,98 @@ static inline __be64 *bh_ptr_end(struct buffer_head *bh) return (__force __be64 *)(bh->b_data + bh->b_size); } +/** + * gfs2_log_write_endio - End of I/O for a log buffer + * @bh: The buffer head + * @uptodate: I/O Status + * + */ + +static void gfs2_log_write_endio(struct buffer_head *bh, int uptodate) +{ + struct gfs2_sbd *sdp = bh->b_private; + bh->b_private = NULL; + + end_buffer_write_sync(bh, uptodate); + if (atomic_dec_and_test(&sdp->sd_log_in_flight)) + wake_up(&sdp->sd_log_flush_wait); +} + +/** + * gfs2_log_get_buf - Get and initialize a buffer to use for log control data + * @sdp: The GFS2 superblock + * + * tReturns: the buffer_head + */ + +static struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp) +{ + u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); + struct buffer_head *bh; + + bh = sb_getblk(sdp->sd_vfs, blkno); + lock_buffer(bh); + memset(bh->b_data, 0, bh->b_size); + set_buffer_uptodate(bh); + clear_buffer_dirty(bh); + gfs2_log_incr_head(sdp); + atomic_inc(&sdp->sd_log_in_flight); + bh->b_private = sdp; + bh->b_end_io = gfs2_log_write_endio; + + return bh; +} + +/** + * gfs2_fake_write_endio - + * @bh: The buffer head + * @uptodate: The I/O Status + * + */ + +static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate) +{ + struct buffer_head *real_bh = bh->b_private; + struct gfs2_bufdata *bd = real_bh->b_private; + struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd; + + end_buffer_write_sync(bh, uptodate); + mempool_free(bh, gfs2_bh_pool); + unlock_buffer(real_bh); + brelse(real_bh); + if (atomic_dec_and_test(&sdp->sd_log_in_flight)) + wake_up(&sdp->sd_log_flush_wait); +} + +/** + * gfs2_log_fake_buf - Build a fake buffer head to write metadata buffer to log + * @sdp: the filesystem + * @data: the data the buffer_head should point to + * + * Returns: the log buffer descriptor + */ + +static struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, + struct buffer_head *real) +{ + u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); + struct buffer_head *bh; + + bh = mempool_alloc(gfs2_bh_pool, GFP_NOFS); + atomic_set(&bh->b_count, 1); + bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock); + set_bh_page(bh, real->b_page, bh_offset(real)); + bh->b_blocknr = blkno; + bh->b_size = sdp->sd_sb.sb_bsize; + bh->b_bdev = sdp->sd_vfs->s_bdev; + bh->b_private = real; + bh->b_end_io = gfs2_fake_write_endio; + + gfs2_log_incr_head(sdp); + atomic_inc(&sdp->sd_log_in_flight); + + return bh; +} static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type) { @@ -553,11 +646,11 @@ static void gfs2_check_magic(struct buffer_head *bh) __be32 *ptr; clear_buffer_escaped(bh); - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); ptr = kaddr + bh_offset(bh); if (*ptr == cpu_to_be32(GFS2_MAGIC)) set_buffer_escaped(bh); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, @@ -594,10 +687,10 @@ static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, if (buffer_escaped(bd->bd_bh)) { void *kaddr; bh1 = gfs2_log_get_buf(sdp); - kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0); + kaddr = kmap_atomic(bd->bd_bh->b_page); memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh), bh1->b_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); *(__be32 *)bh1->b_data = 0; clear_buffer_escaped(bd->bd_bh); unlock_buffer(bd->bd_bh); diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index a8d9bcd0e19..754426b1e52 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -17,6 +17,7 @@ #include <linux/rcupdate.h> #include <linux/rculist_bl.h> #include <linux/atomic.h> +#include <linux/mempool.h> #include "gfs2.h" #include "incore.h" @@ -69,6 +70,16 @@ static void gfs2_init_gl_aspace_once(void *foo) address_space_init_once(mapping); } +static void *gfs2_bh_alloc(gfp_t mask, void *data) +{ + return alloc_buffer_head(mask); +} + +static void gfs2_bh_free(void *ptr, void *data) +{ + return free_buffer_head(ptr); +} + /** * init_gfs2_fs - Register GFS2 as a filesystem * @@ -151,6 +162,10 @@ static int __init init_gfs2_fs(void) gfs2_control_wq = alloc_workqueue("gfs2_control", WQ_NON_REENTRANT | WQ_UNBOUND | WQ_FREEZABLE, 0); if (!gfs2_control_wq) + goto fail_recovery; + + gfs2_bh_pool = mempool_create(1024, gfs2_bh_alloc, gfs2_bh_free, NULL); + if (!gfs2_bh_pool) goto fail_control; gfs2_register_debugfs(); @@ -160,6 +175,8 @@ static int __init init_gfs2_fs(void) return 0; fail_control: + destroy_workqueue(gfs2_control_wq); +fail_recovery: destroy_workqueue(gfs_recovery_wq); fail_wq: unregister_filesystem(&gfs2meta_fs_type); @@ -208,6 +225,7 @@ static void __exit exit_gfs2_fs(void) rcu_barrier(); + mempool_destroy(gfs2_bh_pool); kmem_cache_destroy(gfs2_quotad_cachep); kmem_cache_destroy(gfs2_rgrpd_cachep); kmem_cache_destroy(gfs2_bufdata_cachep); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 6aacf3f230a..6f3a18f9e17 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -68,6 +68,12 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) sb->s_fs_info = sdp; sdp->sd_vfs = sb; + sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats); + if (!sdp->sd_lkstats) { + kfree(sdp); + return NULL; + } + set_bit(SDF_NOJOURNALID, &sdp->sd_flags); gfs2_tune_init(&sdp->sd_tune); @@ -77,7 +83,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) spin_lock_init(&sdp->sd_statfs_spin); spin_lock_init(&sdp->sd_rindex_spin); - mutex_init(&sdp->sd_rindex_mutex); sdp->sd_rindex_tree.rb_node = NULL; INIT_LIST_HEAD(&sdp->sd_jindex_list); @@ -431,10 +436,9 @@ static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); return PTR_ERR(inode); } - dentry = d_alloc_root(inode); + dentry = d_make_root(inode); if (!dentry) { fs_err(sdp, "can't alloc %s dentry\n", name); - iput(inode); return -ENOMEM; } *dptr = dentry; @@ -800,6 +804,11 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo) fs_err(sdp, "can't get quota file inode: %d\n", error); goto fail_rindex; } + + error = gfs2_rindex_update(sdp); + if (error) + goto fail_qinode; + return 0; fail_qinode: @@ -1216,6 +1225,7 @@ fail_sys: gfs2_sys_fs_del(sdp); fail: gfs2_delete_debugfs_file(sdp); + free_percpu(sdp->sd_lkstats); kfree(sdp); sb->s_fs_info = NULL; return error; @@ -1388,6 +1398,7 @@ static void gfs2_kill_sb(struct super_block *sb) shrink_dcache_sb(sb); kill_block_super(sb); gfs2_delete_debugfs_file(sdp); + free_percpu(sdp->sd_lkstats); kfree(sdp); } diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index a45b21b0391..6019da3dcae 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -681,7 +681,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, ptr = qp; nbytes = sizeof(struct gfs2_quota); get_a_page: - page = grab_cache_page(mapping, index); + page = find_or_create_page(mapping, index, GFP_NOFS); if (!page) return -ENOMEM; @@ -720,12 +720,12 @@ get_a_page: gfs2_trans_add_bh(ip->i_gl, bh, 0); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (offset + sizeof(struct gfs2_quota) > PAGE_CACHE_SIZE) nbytes = PAGE_CACHE_SIZE - offset; memcpy(kaddr + offset, ptr, nbytes); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); unlock_page(page); page_cache_release(page); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 981bfa32121..19bde40b486 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -327,23 +327,34 @@ static inline int rgrp_contains_block(struct gfs2_rgrpd *rgd, u64 block) * Returns: The resource group, or NULL if not found */ -struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk) +struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact) { - struct rb_node **newn; + struct rb_node *n, *next; struct gfs2_rgrpd *cur; + if (gfs2_rindex_update(sdp)) + return NULL; + spin_lock(&sdp->sd_rindex_spin); - newn = &sdp->sd_rindex_tree.rb_node; - while (*newn) { - cur = rb_entry(*newn, struct gfs2_rgrpd, rd_node); + n = sdp->sd_rindex_tree.rb_node; + while (n) { + cur = rb_entry(n, struct gfs2_rgrpd, rd_node); + next = NULL; if (blk < cur->rd_addr) - newn = &((*newn)->rb_left); + next = n->rb_left; else if (blk >= cur->rd_data0 + cur->rd_data) - newn = &((*newn)->rb_right); - else { + next = n->rb_right; + if (next == NULL) { spin_unlock(&sdp->sd_rindex_spin); + if (exact) { + if (blk < cur->rd_addr) + return NULL; + if (blk >= cur->rd_data0 + cur->rd_data) + return NULL; + } return cur; } + n = next; } spin_unlock(&sdp->sd_rindex_spin); @@ -532,7 +543,6 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp) struct file_ra_state ra_state; int error, rgrps; - mutex_lock(&sdp->sd_rindex_mutex); file_ra_state_init(&ra_state, inode->i_mapping); for (rgrps = 0;; rgrps++) { loff_t pos = rgrps * sizeof(struct gfs2_rindex); @@ -545,11 +555,10 @@ u64 gfs2_ri_total(struct gfs2_sbd *sdp) break; total_data += be32_to_cpu(((struct gfs2_rindex *)buf)->ri_data); } - mutex_unlock(&sdp->sd_rindex_mutex); return total_data; } -static void rgd_insert(struct gfs2_rgrpd *rgd) +static int rgd_insert(struct gfs2_rgrpd *rgd) { struct gfs2_sbd *sdp = rgd->rd_sbd; struct rb_node **newn = &sdp->sd_rindex_tree.rb_node, *parent = NULL; @@ -565,11 +574,13 @@ static void rgd_insert(struct gfs2_rgrpd *rgd) else if (rgd->rd_addr > cur->rd_addr) newn = &((*newn)->rb_right); else - return; + return -EEXIST; } rb_link_node(&rgd->rd_node, parent, newn); rb_insert_color(&rgd->rd_node, &sdp->sd_rindex_tree); + sdp->sd_rgrps++; + return 0; } /** @@ -623,10 +634,12 @@ static int read_rindex_entry(struct gfs2_inode *ip, if (rgd->rd_data > sdp->sd_max_rg_data) sdp->sd_max_rg_data = rgd->rd_data; spin_lock(&sdp->sd_rindex_spin); - rgd_insert(rgd); - sdp->sd_rgrps++; + error = rgd_insert(rgd); spin_unlock(&sdp->sd_rindex_spin); - return error; + if (!error) + return 0; + + error = 0; /* someone else read in the rgrp; free it and ignore it */ fail: kfree(rgd->rd_bits); @@ -683,20 +696,22 @@ int gfs2_rindex_update(struct gfs2_sbd *sdp) struct gfs2_glock *gl = ip->i_gl; struct gfs2_holder ri_gh; int error = 0; + int unlock_required = 0; /* Read new copy from disk if we don't have the latest */ if (!sdp->sd_rindex_uptodate) { - mutex_lock(&sdp->sd_rindex_mutex); - error = gfs2_glock_nq_init(gl, LM_ST_SHARED, 0, &ri_gh); - if (error) - return error; + if (!gfs2_glock_is_locked_by_me(gl)) { + error = gfs2_glock_nq_init(gl, LM_ST_SHARED, 0, &ri_gh); + if (error) + return error; + unlock_required = 1; + } if (!sdp->sd_rindex_uptodate) error = gfs2_ri_update(ip); - gfs2_glock_dq_uninit(&ri_gh); - mutex_unlock(&sdp->sd_rindex_mutex); + if (unlock_required) + gfs2_glock_dq_uninit(&ri_gh); } - return error; } @@ -805,9 +820,9 @@ void gfs2_rgrp_go_unlock(struct gfs2_holder *gh) } -void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, +int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, struct buffer_head *bh, - const struct gfs2_bitmap *bi) + const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed) { struct super_block *sb = sdp->sd_vfs; struct block_device *bdev = sb->s_bdev; @@ -818,11 +833,19 @@ void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, sector_t nr_sects = 0; int rv; unsigned int x; + u32 trimmed = 0; + u8 diff; for (x = 0; x < bi->bi_len; x++) { - const u8 *orig = bh->b_data + bi->bi_offset + x; - const u8 *clone = bi->bi_clone + bi->bi_offset + x; - u8 diff = ~(*orig | (*orig >> 1)) & (*clone | (*clone >> 1)); + const u8 *clone = bi->bi_clone ? bi->bi_clone : bi->bi_bh->b_data; + clone += bi->bi_offset; + clone += x; + if (bh) { + const u8 *orig = bh->b_data + bi->bi_offset + x; + diff = ~(*orig | (*orig >> 1)) & (*clone | (*clone >> 1)); + } else { + diff = ~(*clone | (*clone >> 1)); + } diff &= 0x55; if (diff == 0) continue; @@ -833,11 +856,14 @@ void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, if (nr_sects == 0) goto start_new_extent; if ((start + nr_sects) != blk) { - rv = blkdev_issue_discard(bdev, start, - nr_sects, GFP_NOFS, - 0); - if (rv) - goto fail; + if (nr_sects >= minlen) { + rv = blkdev_issue_discard(bdev, + start, nr_sects, + GFP_NOFS, 0); + if (rv) + goto fail; + trimmed += nr_sects; + } nr_sects = 0; start_new_extent: start = blk; @@ -848,15 +874,104 @@ start_new_extent: blk += sects_per_blk; } } - if (nr_sects) { + if (nr_sects >= minlen) { rv = blkdev_issue_discard(bdev, start, nr_sects, GFP_NOFS, 0); if (rv) goto fail; + trimmed += nr_sects; } - return; + if (ptrimmed) + *ptrimmed = trimmed; + return 0; + fail: - fs_warn(sdp, "error %d on discard request, turning discards off for this filesystem", rv); + if (sdp->sd_args.ar_discard) + fs_warn(sdp, "error %d on discard request, turning discards off for this filesystem", rv); sdp->sd_args.ar_discard = 0; + return -EIO; +} + +/** + * gfs2_fitrim - Generate discard requests for unused bits of the filesystem + * @filp: Any file on the filesystem + * @argp: Pointer to the arguments (also used to pass result) + * + * Returns: 0 on success, otherwise error code + */ + +int gfs2_fitrim(struct file *filp, void __user *argp) +{ + struct inode *inode = filp->f_dentry->d_inode; + struct gfs2_sbd *sdp = GFS2_SB(inode); + struct request_queue *q = bdev_get_queue(sdp->sd_vfs->s_bdev); + struct buffer_head *bh; + struct gfs2_rgrpd *rgd; + struct gfs2_rgrpd *rgd_end; + struct gfs2_holder gh; + struct fstrim_range r; + int ret = 0; + u64 amt; + u64 trimmed = 0; + unsigned int x; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!blk_queue_discard(q)) + return -EOPNOTSUPP; + + if (argp == NULL) { + r.start = 0; + r.len = ULLONG_MAX; + r.minlen = 0; + } else if (copy_from_user(&r, argp, sizeof(r))) + return -EFAULT; + + rgd = gfs2_blk2rgrpd(sdp, r.start, 0); + rgd_end = gfs2_blk2rgrpd(sdp, r.start + r.len, 0); + + while (1) { + + ret = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); + if (ret) + goto out; + + if (!(rgd->rd_flags & GFS2_RGF_TRIMMED)) { + /* Trim each bitmap in the rgrp */ + for (x = 0; x < rgd->rd_length; x++) { + struct gfs2_bitmap *bi = rgd->rd_bits + x; + ret = gfs2_rgrp_send_discards(sdp, rgd->rd_data0, NULL, bi, r.minlen, &amt); + if (ret) { + gfs2_glock_dq_uninit(&gh); + goto out; + } + trimmed += amt; + } + + /* Mark rgrp as having been trimmed */ + ret = gfs2_trans_begin(sdp, RES_RG_HDR, 0); + if (ret == 0) { + bh = rgd->rd_bits[0].bi_bh; + rgd->rd_flags |= GFS2_RGF_TRIMMED; + gfs2_trans_add_bh(rgd->rd_gl, bh, 1); + gfs2_rgrp_out(rgd, bh->b_data); + gfs2_trans_end(sdp); + } + } + gfs2_glock_dq_uninit(&gh); + + if (rgd == rgd_end) + break; + + rgd = gfs2_rgrpd_get_next(rgd); + } + +out: + r.len = trimmed << 9; + if (argp && copy_to_user(argp, &r, sizeof(r))) + return -EFAULT; + + return ret; } /** @@ -1003,7 +1118,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked) if (ip->i_rgd && rgrp_contains_block(ip->i_rgd, ip->i_goal)) rgd = begin = ip->i_rgd; else - rgd = begin = gfs2_blk2rgrpd(sdp, ip->i_goal); + rgd = begin = gfs2_blk2rgrpd(sdp, ip->i_goal, 1); if (rgd == NULL) return -EBADSLT; @@ -1288,7 +1403,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart, u32 length, rgrp_blk, buf_blk; unsigned int buf; - rgd = gfs2_blk2rgrpd(sdp, bstart); + rgd = gfs2_blk2rgrpd(sdp, bstart, 1); if (!rgd) { if (gfs2_consist(sdp)) fs_err(sdp, "block = %llu\n", (unsigned long long)bstart); @@ -1469,7 +1584,7 @@ void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta) return; trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE); rgd->rd_free += blen; - + rgd->rd_flags &= ~GFS2_RGF_TRIMMED; gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1); gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data); @@ -1555,14 +1670,9 @@ int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type) { struct gfs2_rgrpd *rgd; struct gfs2_holder rgd_gh; - int error; - - error = gfs2_rindex_update(sdp); - if (error) - return error; + int error = -EINVAL; - error = -EINVAL; - rgd = gfs2_blk2rgrpd(sdp, no_addr); + rgd = gfs2_blk2rgrpd(sdp, no_addr, 1); if (!rgd) goto fail; @@ -1605,7 +1715,7 @@ void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, if (ip->i_rgd && rgrp_contains_block(ip->i_rgd, block)) rgd = ip->i_rgd; else - rgd = gfs2_blk2rgrpd(sdp, block); + rgd = gfs2_blk2rgrpd(sdp, block, 1); if (!rgd) { fs_err(sdp, "rlist_add: no rgrp for block %llu\n", (unsigned long long)block); return; diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index ceec9106cdf..b4b10f4de25 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -11,6 +11,7 @@ #define __RGRP_DOT_H__ #include <linux/slab.h> +#include <linux/uaccess.h> struct gfs2_rgrpd; struct gfs2_sbd; @@ -18,7 +19,7 @@ struct gfs2_holder; extern void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd); -extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk); +extern struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk, bool exact); extern struct gfs2_rgrpd *gfs2_rgrpd_get_first(struct gfs2_sbd *sdp); extern struct gfs2_rgrpd *gfs2_rgrpd_get_next(struct gfs2_rgrpd *rgd); @@ -62,8 +63,9 @@ extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state); extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); extern u64 gfs2_ri_total(struct gfs2_sbd *sdp); extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); -extern void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, - struct buffer_head *bh, - const struct gfs2_bitmap *bi); +extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, + struct buffer_head *bh, + const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed); +extern int gfs2_fitrim(struct file *filp, void __user *argp); #endif /* __RGRP_DOT_H__ */ diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 4553ce515f6..6172fa77ad5 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1417,7 +1417,7 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip) if (error) goto out; - rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr); + rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); if (!rgd) { gfs2_consist_inode(ip); error = -EIO; @@ -1557,6 +1557,7 @@ out: end_writeback(inode); gfs2_dir_hash_inval(ip); ip->i_gl->gl_object = NULL; + flush_delayed_work_sync(&ip->i_gl->gl_work); gfs2_glock_add_to_lru(ip->i_gl); gfs2_glock_put(ip->i_gl); ip->i_gl = NULL; diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h index 5d07609ec57..dfa89cd7553 100644 --- a/fs/gfs2/trace_gfs2.h +++ b/fs/gfs2/trace_gfs2.h @@ -11,6 +11,7 @@ #include <linux/dlmconstants.h> #include <linux/gfs2_ondisk.h> #include <linux/writeback.h> +#include <linux/ktime.h> #include "incore.h" #include "glock.h" @@ -43,7 +44,8 @@ {(1UL << GLF_FROZEN), "F" }, \ {(1UL << GLF_QUEUED), "q" }, \ {(1UL << GLF_LRU), "L" }, \ - {(1UL << GLF_OBJECT), "o" }) + {(1UL << GLF_OBJECT), "o" }, \ + {(1UL << GLF_BLOCKING), "b" }) #ifndef NUMPTY #define NUMPTY @@ -236,6 +238,62 @@ TRACE_EVENT(gfs2_glock_queue, glock_trace_name(__entry->state)) ); +/* DLM sends a reply to GFS2 */ +TRACE_EVENT(gfs2_glock_lock_time, + + TP_PROTO(const struct gfs2_glock *gl, s64 tdiff), + + TP_ARGS(gl, tdiff), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( u64, glnum ) + __field( u32, gltype ) + __field( int, status ) + __field( char, flags ) + __field( s64, tdiff ) + __field( s64, srtt ) + __field( s64, srttvar ) + __field( s64, srttb ) + __field( s64, srttvarb ) + __field( s64, sirt ) + __field( s64, sirtvar ) + __field( s64, dcount ) + __field( s64, qcount ) + ), + + TP_fast_assign( + __entry->dev = gl->gl_sbd->sd_vfs->s_dev; + __entry->glnum = gl->gl_name.ln_number; + __entry->gltype = gl->gl_name.ln_type; + __entry->status = gl->gl_lksb.sb_status; + __entry->flags = gl->gl_lksb.sb_flags; + __entry->tdiff = tdiff; + __entry->srtt = gl->gl_stats.stats[GFS2_LKS_SRTT]; + __entry->srttvar = gl->gl_stats.stats[GFS2_LKS_SRTTVAR]; + __entry->srttb = gl->gl_stats.stats[GFS2_LKS_SRTTB]; + __entry->srttvarb = gl->gl_stats.stats[GFS2_LKS_SRTTVARB]; + __entry->sirt = gl->gl_stats.stats[GFS2_LKS_SIRT]; + __entry->sirtvar = gl->gl_stats.stats[GFS2_LKS_SIRTVAR]; + __entry->dcount = gl->gl_stats.stats[GFS2_LKS_DCOUNT]; + __entry->qcount = gl->gl_stats.stats[GFS2_LKS_QCOUNT]; + ), + + TP_printk("%u,%u glock %d:%lld status:%d flags:%02x tdiff:%lld srtt:%lld/%lld srttb:%lld/%lld sirt:%lld/%lld dcnt:%lld qcnt:%lld", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype, + (unsigned long long)__entry->glnum, + __entry->status, __entry->flags, + (long long)__entry->tdiff, + (long long)__entry->srtt, + (long long)__entry->srttvar, + (long long)__entry->srttb, + (long long)__entry->srttvarb, + (long long)__entry->sirt, + (long long)__entry->sirtvar, + (long long)__entry->dcount, + (long long)__entry->qcount) +); + /* Section 2 - Log/journal * * Objectives: diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c index 53511291fe3..9e7765e8e7b 100644 --- a/fs/gfs2/util.c +++ b/fs/gfs2/util.c @@ -25,6 +25,7 @@ struct kmem_cache *gfs2_inode_cachep __read_mostly; struct kmem_cache *gfs2_bufdata_cachep __read_mostly; struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; struct kmem_cache *gfs2_quotad_cachep __read_mostly; +mempool_t *gfs2_bh_pool __read_mostly; void gfs2_assert_i(struct gfs2_sbd *sdp) { diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index b432e04600d..a4ce76c67db 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -10,6 +10,8 @@ #ifndef __UTIL_DOT_H__ #define __UTIL_DOT_H__ +#include <linux/mempool.h> + #include "incore.h" #define fs_printk(level, fs, fmt, arg...) \ @@ -150,6 +152,7 @@ extern struct kmem_cache *gfs2_inode_cachep; extern struct kmem_cache *gfs2_bufdata_cachep; extern struct kmem_cache *gfs2_rgrpd_cachep; extern struct kmem_cache *gfs2_quotad_cachep; +extern mempool_t *gfs2_bh_pool; static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt, unsigned int *p) diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index e9636591b5d..2e5ba425cae 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -251,7 +251,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, if (!blks) return 0; - rgd = gfs2_blk2rgrpd(sdp, bn); + rgd = gfs2_blk2rgrpd(sdp, bn, 1); if (!rgd) { gfs2_consist_inode(ip); return -EIO; @@ -1439,7 +1439,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip) struct gfs2_holder gh; int error; - rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr); + rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr, 1); if (!rgd) { gfs2_consist_inode(ip); return -EIO; diff --git a/fs/hfs/super.c b/fs/hfs/super.c index 8137fb3e678..7b4c537d6e1 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -430,15 +430,13 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_d_op = &hfs_dentry_operations; res = -ENOMEM; - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) - goto bail_iput; + goto bail_no_root; /* everything's okay */ return 0; -bail_iput: - iput(root_inode); bail_no_root: printk(KERN_ERR "hfs: get root inode failed.\n"); bail: diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 21a5b7fc6db..4e75ac646fe 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -317,6 +317,11 @@ static inline unsigned short hfsplus_min_io_size(struct super_block *sb) /* + * hfs+-specific ioctl for making the filesystem bootable + */ +#define HFSPLUS_IOC_BLESS _IO('h', 0x80) + +/* * Functions in any *.c used in other files */ diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 927cdd6d5bf..921967e5abb 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -117,7 +117,7 @@ struct hfsplus_vh { __be32 write_count; __be64 encodings_bmp; - u8 finder_info[32]; + u32 finder_info[8]; struct hfsplus_fork_raw alloc_file; struct hfsplus_fork_raw ext_file; diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 6643b242bdd..82b69ee4dac 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -193,6 +193,7 @@ static struct dentry *hfsplus_file_lookup(struct inode *dir, mutex_init(&hip->extents_lock); hip->extent_state = 0; hip->flags = 0; + hip->userflags = 0; set_bit(HFSPLUS_I_RSRC, &hip->flags); err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); @@ -400,6 +401,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) atomic_set(&hip->opencnt, 0); hip->extent_state = 0; hip->flags = 0; + hip->userflags = 0; memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); hip->alloc_blocks = 0; diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c index f66c7655b3f..c640ba57074 100644 --- a/fs/hfsplus/ioctl.c +++ b/fs/hfsplus/ioctl.c @@ -20,6 +20,38 @@ #include <asm/uaccess.h> #include "hfsplus_fs.h" +/* + * "Blessing" an HFS+ filesystem writes metadata to the superblock informing + * the platform firmware which file to boot from + */ +static int hfsplus_ioctl_bless(struct file *file, int __user *user_flags) +{ + struct dentry *dentry = file->f_path.dentry; + struct inode *inode = dentry->d_inode; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); + struct hfsplus_vh *vh = sbi->s_vhdr; + struct hfsplus_vh *bvh = sbi->s_backup_vhdr; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + mutex_lock(&sbi->vh_mutex); + + /* Directory containing the bootable system */ + vh->finder_info[0] = bvh->finder_info[0] = + cpu_to_be32(parent_ino(dentry)); + + /* Bootloader */ + vh->finder_info[1] = bvh->finder_info[1] = cpu_to_be32(inode->i_ino); + + /* Per spec, the OS X system folder - same as finder_info[0] here */ + vh->finder_info[5] = bvh->finder_info[5] = + cpu_to_be32(parent_ino(dentry)); + + mutex_unlock(&sbi->vh_mutex); + return 0; +} + static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags) { struct inode *inode = file->f_path.dentry->d_inode; @@ -108,6 +140,8 @@ long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return hfsplus_ioctl_getflags(file, argp); case HFSPLUS_IOC_EXT2_SETFLAGS: return hfsplus_ioctl_setflags(file, argp); + case HFSPLUS_IOC_BLESS: + return hfsplus_ioctl_bless(file, argp); default: return -ENOTTY; } diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 427682ca9e4..ceb1c281eef 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -465,6 +465,13 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) goto out_put_alloc_file; } + sb->s_d_op = &hfsplus_dentry_operations; + sb->s_root = d_make_root(root); + if (!sb->s_root) { + err = -ENOMEM; + goto out_put_alloc_file; + } + str.len = sizeof(HFSP_HIDDENDIR_NAME) - 1; str.name = HFSP_HIDDENDIR_NAME; err = hfs_find_init(sbi->cat_tree, &fd); @@ -515,13 +522,6 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) } } - sb->s_d_op = &hfsplus_dentry_operations; - sb->s_root = d_alloc_root(root); - if (!sb->s_root) { - err = -ENOMEM; - goto out_put_hidden_dir; - } - unload_nls(sbi->nls); sbi->nls = nls; return 0; @@ -529,7 +529,8 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) out_put_hidden_dir: iput(sbi->hidden_dir); out_put_root: - iput(root); + dput(sb->s_root); + sb->s_root = NULL; out_put_alloc_file: iput(sbi->alloc_file); out_close_cat_tree: diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h index 3cbfa93cd78..1fe731337f0 100644 --- a/fs/hostfs/hostfs.h +++ b/fs/hostfs/hostfs.h @@ -67,7 +67,8 @@ extern int access_file(char *path, int r, int w, int x); extern int open_file(char *path, int r, int w, int append); extern void *open_dir(char *path, int *err_out); extern char *read_dir(void *stream, unsigned long long *pos, - unsigned long long *ino_out, int *len_out); + unsigned long long *ino_out, int *len_out, + unsigned int *type_out); extern void close_file(void *stream); extern int replace_file(int oldfd, int fd); extern void close_dir(void *stream); diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index e130bd46d67..07c516bfea7 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -283,6 +283,7 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) char *name; unsigned long long next, ino; int error, len; + unsigned int type; name = dentry_name(file->f_path.dentry); if (name == NULL) @@ -292,9 +293,9 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) if (dir == NULL) return -error; next = file->f_pos; - while ((name = read_dir(dir, &next, &ino, &len)) != NULL) { + while ((name = read_dir(dir, &next, &ino, &len, &type)) != NULL) { error = (*filldir)(ent, name, len, file->f_pos, - ino, DT_UNKNOWN); + ino, type); if (error) break; file->f_pos = next; } @@ -966,9 +967,9 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent) } err = -ENOMEM; - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (sb->s_root == NULL) - goto out_put; + goto out; return 0; diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c index dd7bc38a382..a74ad0d371c 100644 --- a/fs/hostfs/hostfs_user.c +++ b/fs/hostfs/hostfs_user.c @@ -98,7 +98,8 @@ void *open_dir(char *path, int *err_out) } char *read_dir(void *stream, unsigned long long *pos, - unsigned long long *ino_out, int *len_out) + unsigned long long *ino_out, int *len_out, + unsigned int *type_out) { DIR *dir = stream; struct dirent *ent; @@ -109,6 +110,7 @@ char *read_dir(void *stream, unsigned long long *pos, return NULL; *len_out = strlen(ent->d_name); *ino_out = ent->d_ino; + *type_out = ent->d_type; *pos = telldir(dir); return ent->d_name; } diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index 3690467c944..54f6eccb79d 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -625,11 +625,9 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) hpfs_init_inode(root); hpfs_read_inode(root); unlock_new_inode(root); - s->s_root = d_alloc_root(root); - if (!s->s_root) { - iput(root); + s->s_root = d_make_root(root); + if (!s->s_root) goto bail0; - } /* * find the root directory's . pointer & finish filling in the inode diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c index d92f4ce8092..a80e45a690a 100644 --- a/fs/hppfs/hppfs.c +++ b/fs/hppfs/hppfs.c @@ -726,17 +726,12 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent) err = -ENOMEM; root_inode = get_inode(sb, dget(proc_mnt->mnt_root)); - if (!root_inode) - goto out_mntput; - - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) - goto out_iput; + goto out_mntput; return 0; - out_iput: - iput(root_inode); out_mntput: mntput(proc_mnt); out: diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 1e85a7ac021..ea251749d9d 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -41,6 +41,25 @@ const struct file_operations hugetlbfs_file_operations; static const struct inode_operations hugetlbfs_dir_inode_operations; static const struct inode_operations hugetlbfs_inode_operations; +struct hugetlbfs_config { + uid_t uid; + gid_t gid; + umode_t mode; + long nr_blocks; + long nr_inodes; + struct hstate *hstate; +}; + +struct hugetlbfs_inode_info { + struct shared_policy policy; + struct inode vfs_inode; +}; + +static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode) +{ + return container_of(inode, struct hugetlbfs_inode_info, vfs_inode); +} + static struct backing_dev_info hugetlbfs_backing_dev_info = { .name = "hugetlbfs", .ra_pages = 0, /* No readahead */ @@ -154,10 +173,12 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, return addr; } - start_addr = mm->free_area_cache; - - if (len <= mm->cached_hole_size) + if (len > mm->cached_hole_size) + start_addr = mm->free_area_cache; + else { start_addr = TASK_UNMAPPED_BASE; + mm->cached_hole_size = 0; + } full_search: addr = ALIGN(start_addr, huge_page_size(h)); @@ -171,13 +192,18 @@ full_search: */ if (start_addr != TASK_UNMAPPED_BASE) { start_addr = TASK_UNMAPPED_BASE; + mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) + if (!vma || addr + len <= vma->vm_start) { + mm->free_area_cache = addr + len; return addr; + } + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; addr = ALIGN(vma->vm_end, huge_page_size(h)); } } @@ -238,17 +264,10 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf, loff_t isize; ssize_t retval = 0; - mutex_lock(&inode->i_mutex); - /* validate length */ if (len == 0) goto out; - isize = i_size_read(inode); - if (!isize) - goto out; - - end_index = (isize - 1) >> huge_page_shift(h); for (;;) { struct page *page; unsigned long nr, ret; @@ -256,18 +275,21 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf, /* nr is the maximum number of bytes to copy from this page */ nr = huge_page_size(h); + isize = i_size_read(inode); + if (!isize) + goto out; + end_index = (isize - 1) >> huge_page_shift(h); if (index >= end_index) { if (index > end_index) goto out; nr = ((isize - 1) & ~huge_page_mask(h)) + 1; - if (nr <= offset) { + if (nr <= offset) goto out; - } } nr = nr - offset; /* Find the page */ - page = find_get_page(mapping, index); + page = find_lock_page(mapping, index); if (unlikely(page == NULL)) { /* * We have a HOLE, zero out the user-buffer for the @@ -279,17 +301,18 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf, else ra = 0; } else { + unlock_page(page); + /* * We have the page, copy it to user space buffer. */ ra = hugetlbfs_read_actor(page, offset, buf, len, nr); ret = ra; + page_cache_release(page); } if (ra < 0) { if (retval == 0) retval = ra; - if (page) - page_cache_release(page); goto out; } @@ -299,16 +322,12 @@ static ssize_t hugetlbfs_read(struct file *filp, char __user *buf, index += offset >> huge_page_shift(h); offset &= ~huge_page_mask(h); - if (page) - page_cache_release(page); - /* short read or no more work */ if ((ret != nr) || (len == 0)) break; } out: *ppos = ((loff_t)index << huge_page_shift(h)) + offset; - mutex_unlock(&inode->i_mutex); return retval; } @@ -607,9 +626,15 @@ static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf) spin_lock(&sbinfo->stat_lock); /* If no limits set, just report 0 for max/free/used * blocks, like simple_statfs() */ - if (sbinfo->max_blocks >= 0) { - buf->f_blocks = sbinfo->max_blocks; - buf->f_bavail = buf->f_bfree = sbinfo->free_blocks; + if (sbinfo->spool) { + long free_pages; + + spin_lock(&sbinfo->spool->lock); + buf->f_blocks = sbinfo->spool->max_hpages; + free_pages = sbinfo->spool->max_hpages + - sbinfo->spool->used_hpages; + buf->f_bavail = buf->f_bfree = free_pages; + spin_unlock(&sbinfo->spool->lock); buf->f_files = sbinfo->max_inodes; buf->f_ffree = sbinfo->free_inodes; } @@ -625,6 +650,10 @@ static void hugetlbfs_put_super(struct super_block *sb) if (sbi) { sb->s_fs_info = NULL; + + if (sbi->spool) + hugepage_put_subpool(sbi->spool); + kfree(sbi); } } @@ -831,8 +860,6 @@ bad_val: static int hugetlbfs_fill_super(struct super_block *sb, void *data, int silent) { - struct inode * inode; - struct dentry * root; int ret; struct hugetlbfs_config config; struct hugetlbfs_sb_info *sbinfo; @@ -855,60 +882,31 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_fs_info = sbinfo; sbinfo->hstate = config.hstate; spin_lock_init(&sbinfo->stat_lock); - sbinfo->max_blocks = config.nr_blocks; - sbinfo->free_blocks = config.nr_blocks; sbinfo->max_inodes = config.nr_inodes; sbinfo->free_inodes = config.nr_inodes; + sbinfo->spool = NULL; + if (config.nr_blocks != -1) { + sbinfo->spool = hugepage_new_subpool(config.nr_blocks); + if (!sbinfo->spool) + goto out_free; + } sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = huge_page_size(config.hstate); sb->s_blocksize_bits = huge_page_shift(config.hstate); sb->s_magic = HUGETLBFS_MAGIC; sb->s_op = &hugetlbfs_ops; sb->s_time_gran = 1; - inode = hugetlbfs_get_root(sb, &config); - if (!inode) - goto out_free; - - root = d_alloc_root(inode); - if (!root) { - iput(inode); + sb->s_root = d_make_root(hugetlbfs_get_root(sb, &config)); + if (!sb->s_root) goto out_free; - } - sb->s_root = root; return 0; out_free: + if (sbinfo->spool) + kfree(sbinfo->spool); kfree(sbinfo); return -ENOMEM; } -int hugetlb_get_quota(struct address_space *mapping, long delta) -{ - int ret = 0; - struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(mapping->host->i_sb); - - if (sbinfo->free_blocks > -1) { - spin_lock(&sbinfo->stat_lock); - if (sbinfo->free_blocks - delta >= 0) - sbinfo->free_blocks -= delta; - else - ret = -ENOMEM; - spin_unlock(&sbinfo->stat_lock); - } - - return ret; -} - -void hugetlb_put_quota(struct address_space *mapping, long delta) -{ - struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(mapping->host->i_sb); - - if (sbinfo->free_blocks > -1) { - spin_lock(&sbinfo->stat_lock); - sbinfo->free_blocks += delta; - spin_unlock(&sbinfo->stat_lock); - } -} - static struct dentry *hugetlbfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { @@ -928,8 +926,8 @@ static int can_do_hugetlb_shm(void) return capable(CAP_IPC_LOCK) || in_group_p(sysctl_hugetlb_shm_group); } -struct file *hugetlb_file_setup(const char *name, size_t size, - vm_flags_t acctflag, +struct file *hugetlb_file_setup(const char *name, unsigned long addr, + size_t size, vm_flags_t acctflag, struct user_struct **user, int creat_flags) { int error = -ENOMEM; @@ -938,6 +936,8 @@ struct file *hugetlb_file_setup(const char *name, size_t size, struct path path; struct dentry *root; struct qstr quick_string; + struct hstate *hstate; + unsigned long num_pages; *user = NULL; if (!hugetlbfs_vfsmount) @@ -946,7 +946,11 @@ struct file *hugetlb_file_setup(const char *name, size_t size, if (creat_flags == HUGETLB_SHMFS_INODE && !can_do_hugetlb_shm()) { *user = current_user(); if (user_shm_lock(size, *user)) { - printk_once(KERN_WARNING "Using mlock ulimits for SHM_HUGETLB is deprecated\n"); + task_lock(current); + printk_once(KERN_WARNING + "%s (%d): Using mlock ulimits for SHM_HUGETLB is deprecated\n", + current->comm, current->pid); + task_unlock(current); } else { *user = NULL; return ERR_PTR(-EPERM); @@ -967,10 +971,12 @@ struct file *hugetlb_file_setup(const char *name, size_t size, if (!inode) goto out_dentry; + hstate = hstate_inode(inode); + size += addr & ~huge_page_mask(hstate); + num_pages = ALIGN(size, huge_page_size(hstate)) >> + huge_page_shift(hstate); error = -ENOMEM; - if (hugetlb_reserve_pages(inode, 0, - size >> huge_page_shift(hstate_inode(inode)), NULL, - acctflag)) + if (hugetlb_reserve_pages(inode, 0, num_pages, NULL, acctflag)) goto out_inode; d_instantiate(path.dentry, inode); @@ -1006,6 +1012,7 @@ static int __init init_hugetlbfs_fs(void) if (error) return error; + error = -ENOMEM; hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache", sizeof(struct hugetlbfs_inode_info), 0, 0, init_once); @@ -1024,10 +1031,10 @@ static int __init init_hugetlbfs_fs(void) } error = PTR_ERR(vfsmount); + unregister_filesystem(&hugetlbfs_fs_type); out: - if (error) - kmem_cache_destroy(hugetlbfs_inode_cachep); + kmem_cache_destroy(hugetlbfs_inode_cachep); out2: bdi_destroy(&hugetlbfs_backing_dev_info); return error; diff --git a/fs/inode.c b/fs/inode.c index fb10d86ffad..9f4f5fecc09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2,29 +2,19 @@ * (C) 1997 Linus Torvalds * (C) 1999 Andrea Arcangeli <andrea@suse.de> (dynamic inode allocation) */ +#include <linux/export.h> #include <linux/fs.h> #include <linux/mm.h> -#include <linux/dcache.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/writeback.h> -#include <linux/module.h> #include <linux/backing-dev.h> -#include <linux/wait.h> -#include <linux/rwsem.h> #include <linux/hash.h> #include <linux/swap.h> #include <linux/security.h> -#include <linux/pagemap.h> #include <linux/cdev.h> #include <linux/bootmem.h> #include <linux/fsnotify.h> #include <linux/mount.h> -#include <linux/async.h> #include <linux/posix_acl.h> #include <linux/prefetch.h> -#include <linux/ima.h> -#include <linux/cred.h> #include <linux/buffer_head.h> /* for inode_has_buffers */ #include <linux/ratelimit.h> #include "internal.h" @@ -938,8 +928,7 @@ void lockdep_annotate_inode_mutex_key(struct inode *inode) struct file_system_type *type = inode->i_sb->s_type; /* Set new key only if filesystem hasn't already changed it */ - if (!lockdep_match_class(&inode->i_mutex, - &type->i_mutex_key)) { + if (lockdep_match_class(&inode->i_mutex, &type->i_mutex_key)) { /* * ensure nobody is actually holding i_mutex */ @@ -966,6 +955,7 @@ void unlock_new_inode(struct inode *inode) spin_lock(&inode->i_lock); WARN_ON(!(inode->i_state & I_NEW)); inode->i_state &= ~I_NEW; + smp_mb(); wake_up_bit(&inode->i_state, __I_NEW); spin_unlock(&inode->i_lock); } @@ -1369,17 +1359,6 @@ int generic_delete_inode(struct inode *inode) EXPORT_SYMBOL(generic_delete_inode); /* - * Normal UNIX filesystem behaviour: delete the - * inode when the usage count drops to zero, and - * i_nlink is zero. - */ -int generic_drop_inode(struct inode *inode) -{ - return !inode->i_nlink || inode_unhashed(inode); -} -EXPORT_SYMBOL_GPL(generic_drop_inode); - -/* * Called when we're dropping the last reference * to an inode. * @@ -1510,9 +1489,10 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, * This function automatically handles read only file systems and media, * as well as the "noatime" flag and inode specific "noatime" markers. */ -void touch_atime(struct vfsmount *mnt, struct dentry *dentry) +void touch_atime(struct path *path) { - struct inode *inode = dentry->d_inode; + struct vfsmount *mnt = path->mnt; + struct inode *inode = path->dentry->d_inode; struct timespec now; if (inode->i_flags & S_NOATIME) @@ -1651,7 +1631,7 @@ __setup("ihash_entries=", set_ihash_entries); */ void __init inode_init_early(void) { - int loop; + unsigned int loop; /* If hashes are distributed across NUMA nodes, defer * hash allocation until vmalloc space is available. @@ -1669,13 +1649,13 @@ void __init inode_init_early(void) &i_hash_mask, 0); - for (loop = 0; loop < (1 << i_hash_shift); loop++) + for (loop = 0; loop < (1U << i_hash_shift); loop++) INIT_HLIST_HEAD(&inode_hashtable[loop]); } void __init inode_init(void) { - int loop; + unsigned int loop; /* inode slab cache */ inode_cachep = kmem_cache_create("inode_cache", @@ -1699,7 +1679,7 @@ void __init inode_init(void) &i_hash_mask, 0); - for (loop = 0; loop < (1 << i_hash_shift); loop++) + for (loop = 0; loop < (1U << i_hash_shift); loop++) INIT_HLIST_HEAD(&inode_hashtable[loop]); } diff --git a/fs/ioctl.c b/fs/ioctl.c index 066836e8184..29167bebe87 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -10,7 +10,7 @@ #include <linux/file.h> #include <linux/fs.h> #include <linux/security.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/uaccess.h> #include <linux/writeback.h> #include <linux/buffer_head.h> diff --git a/fs/ioprio.c b/fs/ioprio.c index f84b380d65e..0f1b9515213 100644 --- a/fs/ioprio.c +++ b/fs/ioprio.c @@ -51,7 +51,7 @@ int set_task_ioprio(struct task_struct *task, int ioprio) ioc = get_task_io_context(task, GFP_ATOMIC, NUMA_NO_NODE); if (ioc) { ioc_ioprio_changed(ioc, ioprio); - put_io_context(ioc, NULL); + put_io_context(ioc); } return err; diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index bd62c76fb5d..29037c365ba 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -947,9 +947,8 @@ root_found: s->s_d_op = &isofs_dentry_ops[table]; /* get the root dentry */ - s->s_root = d_alloc_root(inode); + s->s_root = d_make_root(inode); if (!(s->s_root)) { - iput(inode); error = -ENOMEM; goto out_no_inode; } diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c index 5d1a00a5041..05f0754f2b4 100644 --- a/fs/jbd/checkpoint.c +++ b/fs/jbd/checkpoint.c @@ -453,8 +453,6 @@ out: * * Return <0 on error, 0 on success, 1 if there was nothing to clean up. * - * Called with the journal lock held. - * * This is the only part of the journaling code which really needs to be * aware of transaction aborts. Checkpointing involves writing to the * main filesystem area rather than to the journal, so it can proceed @@ -472,13 +470,14 @@ int cleanup_journal_tail(journal_t *journal) if (is_journal_aborted(journal)) return 1; - /* OK, work out the oldest transaction remaining in the log, and + /* + * OK, work out the oldest transaction remaining in the log, and * the log block it starts at. * * If the log is now empty, we need to work out which is the * next transaction ID we will write, and where it will - * start. */ - + * start. + */ spin_lock(&journal->j_state_lock); spin_lock(&journal->j_list_lock); transaction = journal->j_checkpoint_transactions; @@ -504,7 +503,25 @@ int cleanup_journal_tail(journal_t *journal) spin_unlock(&journal->j_state_lock); return 1; } + spin_unlock(&journal->j_state_lock); + + /* + * We need to make sure that any blocks that were recently written out + * --- perhaps by log_do_checkpoint() --- are flushed out before we + * drop the transactions from the journal. It's unlikely this will be + * necessary, especially with an appropriately sized journal, but we + * need this to guarantee correctness. Fortunately + * cleanup_journal_tail() doesn't get called all that often. + */ + if (journal->j_flags & JFS_BARRIER) + blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL); + spin_lock(&journal->j_state_lock); + if (!tid_gt(first_tid, journal->j_tail_sequence)) { + spin_unlock(&journal->j_state_lock); + /* Someone else cleaned up journal so return 0 */ + return 0; + } /* OK, update the superblock to recover the freed space. * Physical blocks come first: have we wrapped beyond the end of * the log? */ diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 59c09f9541b..0971e921780 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -129,6 +129,8 @@ static int kjournald(void *arg) setup_timer(&journal->j_commit_timer, commit_timeout, (unsigned long)current); + set_freezable(); + /* Record that the journal thread is running */ journal->j_task = current; wake_up(&journal->j_wait_done_commit); @@ -328,7 +330,7 @@ repeat: new_offset = offset_in_page(jh2bh(jh_in)->b_data); } - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); /* * Check for escaping */ @@ -337,7 +339,7 @@ repeat: need_copy_out = 1; do_escape = 1; } - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); /* * Do we need to do a data copy? @@ -354,9 +356,9 @@ repeat: } jh_in->b_frozen_data = tmp; - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); memcpy(tmp, mapped_data + new_offset, jh2bh(jh_in)->b_size); - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); new_page = virt_to_page(tmp); new_offset = offset_in_page(tmp); @@ -368,9 +370,9 @@ repeat: * copying, we can finally do so. */ if (do_escape) { - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); *((unsigned int *)(mapped_data + new_offset)) = 0; - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); } set_bh_page(new_bh, new_page, new_offset); diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c index 5b43e96788e..008bf062fd2 100644 --- a/fs/jbd/recovery.c +++ b/fs/jbd/recovery.c @@ -20,6 +20,7 @@ #include <linux/fs.h> #include <linux/jbd.h> #include <linux/errno.h> +#include <linux/blkdev.h> #endif /* @@ -263,6 +264,9 @@ int journal_recover(journal_t *journal) err2 = sync_blockdev(journal->j_fs_dev); if (!err) err = err2; + /* Flush disk caches to get replayed data on the permanent storage */ + if (journal->j_flags & JFS_BARRIER) + blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL); return err; } diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index 7fce94b04bc..b2a7e5244e3 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -718,9 +718,9 @@ done: "Possible IO failure.\n"); page = jh2bh(jh)->b_page; offset = offset_in_page(jh2bh(jh)->b_data); - source = kmap_atomic(page, KM_USER0); + source = kmap_atomic(page); memcpy(jh->b_frozen_data, source+offset, jh2bh(jh)->b_size); - kunmap_atomic(source, KM_USER0); + kunmap_atomic(source); } jbd_unlock_bh_state(bh); diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index d49d202903f..c78841ee81c 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -88,14 +88,13 @@ static inline void __buffer_relink_io(struct journal_head *jh) * whole transaction. * * Requires j_list_lock - * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it */ static int __try_to_free_cp_buf(struct journal_head *jh) { int ret = 0; struct buffer_head *bh = jh2bh(jh); - if (jh->b_jlist == BJ_None && !buffer_locked(bh) && + if (jh->b_transaction == NULL && !buffer_locked(bh) && !buffer_dirty(bh) && !buffer_write_io_error(bh)) { /* * Get our reference so that bh cannot be freed before @@ -104,11 +103,8 @@ static int __try_to_free_cp_buf(struct journal_head *jh) get_bh(bh); JBUFFER_TRACE(jh, "remove from checkpoint list"); ret = __jbd2_journal_remove_checkpoint(jh) + 1; - jbd_unlock_bh_state(bh); BUFFER_TRACE(bh, "release"); __brelse(bh); - } else { - jbd_unlock_bh_state(bh); } return ret; } @@ -180,21 +176,6 @@ void __jbd2_log_wait_for_space(journal_t *journal) } /* - * We were unable to perform jbd_trylock_bh_state() inside j_list_lock. - * The caller must restart a list walk. Wait for someone else to run - * jbd_unlock_bh_state(). - */ -static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh) - __releases(journal->j_list_lock) -{ - get_bh(bh); - spin_unlock(&journal->j_list_lock); - jbd_lock_bh_state(bh); - jbd_unlock_bh_state(bh); - put_bh(bh); -} - -/* * Clean up transaction's list of buffers submitted for io. * We wait for any pending IO to complete and remove any clean * buffers. Note that we take the buffers in the opposite ordering @@ -222,15 +203,9 @@ restart: while (!released && transaction->t_checkpoint_io_list) { jh = transaction->t_checkpoint_io_list; bh = jh2bh(jh); - if (!jbd_trylock_bh_state(bh)) { - jbd_sync_bh(journal, bh); - spin_lock(&journal->j_list_lock); - goto restart; - } get_bh(bh); if (buffer_locked(bh)) { spin_unlock(&journal->j_list_lock); - jbd_unlock_bh_state(bh); wait_on_buffer(bh); /* the journal_head may have gone by now */ BUFFER_TRACE(bh, "brelse"); @@ -246,7 +221,6 @@ restart: * it has been written out and so we can drop it from the list */ released = __jbd2_journal_remove_checkpoint(jh); - jbd_unlock_bh_state(bh); __brelse(bh); } @@ -266,7 +240,6 @@ __flush_batch(journal_t *journal, int *batch_count) for (i = 0; i < *batch_count; i++) { struct buffer_head *bh = journal->j_chkpt_bhs[i]; - clear_buffer_jwrite(bh); BUFFER_TRACE(bh, "brelse"); __brelse(bh); } @@ -281,7 +254,6 @@ __flush_batch(journal_t *journal, int *batch_count) * be written out. * * Called with j_list_lock held and drops it if 1 is returned - * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it */ static int __process_buffer(journal_t *journal, struct journal_head *jh, int *batch_count, transaction_t *transaction) @@ -292,7 +264,6 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, if (buffer_locked(bh)) { get_bh(bh); spin_unlock(&journal->j_list_lock); - jbd_unlock_bh_state(bh); wait_on_buffer(bh); /* the journal_head may have gone by now */ BUFFER_TRACE(bh, "brelse"); @@ -304,7 +275,6 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, transaction->t_chp_stats.cs_forced_to_close++; spin_unlock(&journal->j_list_lock); - jbd_unlock_bh_state(bh); if (unlikely(journal->j_flags & JBD2_UNMOUNT)) /* * The journal thread is dead; so starting and @@ -323,11 +293,9 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, if (unlikely(buffer_write_io_error(bh))) ret = -EIO; get_bh(bh); - J_ASSERT_JH(jh, !buffer_jbddirty(bh)); BUFFER_TRACE(bh, "remove from checkpoint"); __jbd2_journal_remove_checkpoint(jh); spin_unlock(&journal->j_list_lock); - jbd_unlock_bh_state(bh); __brelse(bh); } else { /* @@ -340,10 +308,8 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, BUFFER_TRACE(bh, "queue"); get_bh(bh); J_ASSERT_BH(bh, !buffer_jwrite(bh)); - set_buffer_jwrite(bh); journal->j_chkpt_bhs[*batch_count] = bh; __buffer_relink_io(jh); - jbd_unlock_bh_state(bh); transaction->t_chp_stats.cs_written++; (*batch_count)++; if (*batch_count == JBD2_NR_BATCH) { @@ -407,15 +373,7 @@ restart: int retry = 0, err; while (!retry && transaction->t_checkpoint_list) { - struct buffer_head *bh; - jh = transaction->t_checkpoint_list; - bh = jh2bh(jh); - if (!jbd_trylock_bh_state(bh)) { - jbd_sync_bh(journal, bh); - retry = 1; - break; - } retry = __process_buffer(journal, jh, &batch_count, transaction); if (retry < 0 && !result) @@ -478,79 +436,28 @@ out: int jbd2_cleanup_journal_tail(journal_t *journal) { - transaction_t * transaction; tid_t first_tid; - unsigned long blocknr, freed; + unsigned long blocknr; if (is_journal_aborted(journal)) return 1; - /* OK, work out the oldest transaction remaining in the log, and - * the log block it starts at. - * - * If the log is now empty, we need to work out which is the - * next transaction ID we will write, and where it will - * start. */ - - write_lock(&journal->j_state_lock); - spin_lock(&journal->j_list_lock); - transaction = journal->j_checkpoint_transactions; - if (transaction) { - first_tid = transaction->t_tid; - blocknr = transaction->t_log_start; - } else if ((transaction = journal->j_committing_transaction) != NULL) { - first_tid = transaction->t_tid; - blocknr = transaction->t_log_start; - } else if ((transaction = journal->j_running_transaction) != NULL) { - first_tid = transaction->t_tid; - blocknr = journal->j_head; - } else { - first_tid = journal->j_transaction_sequence; - blocknr = journal->j_head; - } - spin_unlock(&journal->j_list_lock); - J_ASSERT(blocknr != 0); - - /* If the oldest pinned transaction is at the tail of the log - already then there's not much we can do right now. */ - if (journal->j_tail_sequence == first_tid) { - write_unlock(&journal->j_state_lock); + if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr)) return 1; - } - - /* OK, update the superblock to recover the freed space. - * Physical blocks come first: have we wrapped beyond the end of - * the log? */ - freed = blocknr - journal->j_tail; - if (blocknr < journal->j_tail) - freed = freed + journal->j_last - journal->j_first; - - trace_jbd2_cleanup_journal_tail(journal, first_tid, blocknr, freed); - jbd_debug(1, - "Cleaning journal tail from %d to %d (offset %lu), " - "freeing %lu\n", - journal->j_tail_sequence, first_tid, blocknr, freed); - - journal->j_free += freed; - journal->j_tail_sequence = first_tid; - journal->j_tail = blocknr; - write_unlock(&journal->j_state_lock); + J_ASSERT(blocknr != 0); /* - * If there is an external journal, we need to make sure that - * any data blocks that were recently written out --- perhaps - * by jbd2_log_do_checkpoint() --- are flushed out before we - * drop the transactions from the external journal. It's - * unlikely this will be necessary, especially with a - * appropriately sized journal, but we need this to guarantee - * correctness. Fortunately jbd2_cleanup_journal_tail() - * doesn't get called all that often. + * We need to make sure that any blocks that were recently written out + * --- perhaps by jbd2_log_do_checkpoint() --- are flushed out before + * we drop the transactions from the journal. It's unlikely this will + * be necessary, especially with an appropriately sized journal, but we + * need this to guarantee correctness. Fortunately + * jbd2_cleanup_journal_tail() doesn't get called all that often. */ - if ((journal->j_fs_dev != journal->j_dev) && - (journal->j_flags & JBD2_BARRIER)) + if (journal->j_flags & JBD2_BARRIER) blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL); - if (!(journal->j_flags & JBD2_ABORT)) - jbd2_journal_update_superblock(journal, 1); + + __jbd2_update_log_tail(journal, first_tid, blocknr); return 0; } @@ -582,15 +489,12 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released) do { jh = next_jh; next_jh = jh->b_cpnext; - /* Use trylock because of the ranking */ - if (jbd_trylock_bh_state(jh2bh(jh))) { - ret = __try_to_free_cp_buf(jh); - if (ret) { - freed++; - if (ret == 2) { - *released = 1; - return freed; - } + ret = __try_to_free_cp_buf(jh); + if (ret) { + freed++; + if (ret == 2) { + *released = 1; + return freed; } } /* @@ -673,9 +577,7 @@ out: * The function can free jh and bh. * * This function is called with j_list_lock held. - * This function is called with jbd_lock_bh_state(jh2bh(jh)) */ - int __jbd2_journal_remove_checkpoint(struct journal_head *jh) { struct transaction_chp_stats_s *stats; @@ -722,7 +624,7 @@ int __jbd2_journal_remove_checkpoint(struct journal_head *jh) transaction->t_tid, stats); __jbd2_journal_drop_transaction(journal, transaction); - kfree(transaction); + jbd2_journal_free_transaction(transaction); /* Just in case anybody was waiting for more transactions to be checkpointed... */ @@ -797,5 +699,7 @@ void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transact J_ASSERT(journal->j_committing_transaction != transaction); J_ASSERT(journal->j_running_transaction != transaction); + trace_jbd2_drop_transaction(journal, transaction); + jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid); } diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 5069b847515..17f557f01cf 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -286,10 +286,10 @@ static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh) char *addr; __u32 checksum; - addr = kmap_atomic(page, KM_USER0); + addr = kmap_atomic(page); checksum = crc32_be(crc32_sum, (void *)(addr + offset_in_page(bh->b_data)), bh->b_size); - kunmap_atomic(addr, KM_USER0); + kunmap_atomic(addr); return checksum; } @@ -331,6 +331,10 @@ void jbd2_journal_commit_transaction(journal_t *journal) struct buffer_head *cbh = NULL; /* For transactional checksums */ __u32 crc32_sum = ~0; struct blk_plug plug; + /* Tail of the journal */ + unsigned long first_block; + tid_t first_tid; + int update_tail; /* * First job: lock down the current transaction and wait for @@ -340,7 +344,18 @@ void jbd2_journal_commit_transaction(journal_t *journal) /* Do we need to erase the effects of a prior jbd2_journal_flush? */ if (journal->j_flags & JBD2_FLUSHED) { jbd_debug(3, "super block updated\n"); - jbd2_journal_update_superblock(journal, 1); + mutex_lock(&journal->j_checkpoint_mutex); + /* + * We hold j_checkpoint_mutex so tail cannot change under us. + * We don't need any special data guarantees for writing sb + * since journal is empty and it is ok for write to be + * flushed only with transaction commit. + */ + jbd2_journal_update_sb_log_tail(journal, + journal->j_tail_sequence, + journal->j_tail, + WRITE_SYNC); + mutex_unlock(&journal->j_checkpoint_mutex); } else { jbd_debug(3, "superblock not updated\n"); } @@ -677,10 +692,30 @@ start_journal_io: err = 0; } + /* + * Get current oldest transaction in the log before we issue flush + * to the filesystem device. After the flush we can be sure that + * blocks of all older transactions are checkpointed to persistent + * storage and we will be safe to update journal start in the + * superblock with the numbers we get here. + */ + update_tail = + jbd2_journal_get_log_tail(journal, &first_tid, &first_block); + write_lock(&journal->j_state_lock); + if (update_tail) { + long freed = first_block - journal->j_tail; + + if (first_block < journal->j_tail) + freed += journal->j_last - journal->j_first; + /* Update tail only if we free significant amount of space */ + if (freed < journal->j_maxlen / 4) + update_tail = 0; + } J_ASSERT(commit_transaction->t_state == T_COMMIT); commit_transaction->t_state = T_COMMIT_DFLUSH; write_unlock(&journal->j_state_lock); + /* * If the journal is not located on the file system device, * then we must flush the file system device before we issue @@ -831,6 +866,14 @@ wait_for_iobuf: if (err) jbd2_journal_abort(journal, err); + /* + * Now disk caches for filesystem device are flushed so we are safe to + * erase checkpointed transactions from the log by updating journal + * superblock. + */ + if (update_tail) + jbd2_update_log_tail(journal, first_tid, first_block); + /* End of a transaction! Finally, we can do checkpoint processing: any buffers committed as a result of this transaction can be removed from any checkpoint list it was on @@ -1048,7 +1091,7 @@ restart_loop: jbd_debug(1, "JBD2: commit %d complete, head %d\n", journal->j_commit_sequence, journal->j_tail_sequence); if (to_free) - kfree(commit_transaction); + jbd2_journal_free_transaction(commit_transaction); wake_up(&journal->j_wait_done_commit); } diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index c0a5f9f1b12..98ed6dbfe38 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -71,7 +71,6 @@ EXPORT_SYMBOL(jbd2_journal_revoke); EXPORT_SYMBOL(jbd2_journal_init_dev); EXPORT_SYMBOL(jbd2_journal_init_inode); -EXPORT_SYMBOL(jbd2_journal_update_format); EXPORT_SYMBOL(jbd2_journal_check_used_features); EXPORT_SYMBOL(jbd2_journal_check_available_features); EXPORT_SYMBOL(jbd2_journal_set_features); @@ -96,7 +95,6 @@ EXPORT_SYMBOL(jbd2_journal_release_jbd_inode); EXPORT_SYMBOL(jbd2_journal_begin_ordered_truncate); EXPORT_SYMBOL(jbd2_inode_cache); -static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *); static void __journal_abort_soft (journal_t *journal, int errno); static int jbd2_journal_create_slab(size_t slab_size); @@ -139,6 +137,8 @@ static int kjournald2(void *arg) setup_timer(&journal->j_commit_timer, commit_timeout, (unsigned long)current); + set_freezable(); + /* Record that the journal thread is running */ journal->j_task = current; wake_up(&journal->j_wait_done_commit); @@ -345,7 +345,7 @@ repeat: new_offset = offset_in_page(jh2bh(jh_in)->b_data); } - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); /* * Fire data frozen trigger if data already wasn't frozen. Do this * before checking for escaping, as the trigger may modify the magic @@ -364,7 +364,7 @@ repeat: need_copy_out = 1; do_escape = 1; } - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); /* * Do we need to do a data copy? @@ -385,9 +385,9 @@ repeat: } jh_in->b_frozen_data = tmp; - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); memcpy(tmp, mapped_data + new_offset, jh2bh(jh_in)->b_size); - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); new_page = virt_to_page(tmp); new_offset = offset_in_page(tmp); @@ -406,9 +406,9 @@ repeat: * copying, we can finally do so. */ if (do_escape) { - mapped_data = kmap_atomic(new_page, KM_USER0); + mapped_data = kmap_atomic(new_page); *((unsigned int *)(mapped_data + new_offset)) = 0; - kunmap_atomic(mapped_data, KM_USER0); + kunmap_atomic(mapped_data); } set_bh_page(new_bh, new_page, new_offset); @@ -744,6 +744,98 @@ struct journal_head *jbd2_journal_get_descriptor_buffer(journal_t *journal) return jbd2_journal_add_journal_head(bh); } +/* + * Return tid of the oldest transaction in the journal and block in the journal + * where the transaction starts. + * + * If the journal is now empty, return which will be the next transaction ID + * we will write and where will that transaction start. + * + * The return value is 0 if journal tail cannot be pushed any further, 1 if + * it can. + */ +int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid, + unsigned long *block) +{ + transaction_t *transaction; + int ret; + + read_lock(&journal->j_state_lock); + spin_lock(&journal->j_list_lock); + transaction = journal->j_checkpoint_transactions; + if (transaction) { + *tid = transaction->t_tid; + *block = transaction->t_log_start; + } else if ((transaction = journal->j_committing_transaction) != NULL) { + *tid = transaction->t_tid; + *block = transaction->t_log_start; + } else if ((transaction = journal->j_running_transaction) != NULL) { + *tid = transaction->t_tid; + *block = journal->j_head; + } else { + *tid = journal->j_transaction_sequence; + *block = journal->j_head; + } + ret = tid_gt(*tid, journal->j_tail_sequence); + spin_unlock(&journal->j_list_lock); + read_unlock(&journal->j_state_lock); + + return ret; +} + +/* + * Update information in journal structure and in on disk journal superblock + * about log tail. This function does not check whether information passed in + * really pushes log tail further. It's responsibility of the caller to make + * sure provided log tail information is valid (e.g. by holding + * j_checkpoint_mutex all the time between computing log tail and calling this + * function as is the case with jbd2_cleanup_journal_tail()). + * + * Requires j_checkpoint_mutex + */ +void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block) +{ + unsigned long freed; + + BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex)); + + /* + * We cannot afford for write to remain in drive's caches since as + * soon as we update j_tail, next transaction can start reusing journal + * space and if we lose sb update during power failure we'd replay + * old transaction with possibly newly overwritten data. + */ + jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA); + write_lock(&journal->j_state_lock); + freed = block - journal->j_tail; + if (block < journal->j_tail) + freed += journal->j_last - journal->j_first; + + trace_jbd2_update_log_tail(journal, tid, block, freed); + jbd_debug(1, + "Cleaning journal tail from %d to %d (offset %lu), " + "freeing %lu\n", + journal->j_tail_sequence, tid, block, freed); + + journal->j_free += freed; + journal->j_tail_sequence = tid; + journal->j_tail = block; + write_unlock(&journal->j_state_lock); +} + +/* + * This is a variaon of __jbd2_update_log_tail which checks for validity of + * provided log tail and locks j_checkpoint_mutex. So it is safe against races + * with other threads updating log tail. + */ +void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block) +{ + mutex_lock(&journal->j_checkpoint_mutex); + if (tid_gt(tid, journal->j_tail_sequence)) + __jbd2_update_log_tail(journal, tid, block); + mutex_unlock(&journal->j_checkpoint_mutex); +} + struct jbd2_stats_proc_session { journal_t *journal; struct transaction_stats_s *stats; @@ -1112,40 +1204,45 @@ static int journal_reset(journal_t *journal) journal->j_max_transaction_buffers = journal->j_maxlen / 4; - /* Add the dynamic fields and write it to disk. */ - jbd2_journal_update_superblock(journal, 1); - return jbd2_journal_start_thread(journal); -} - -/** - * void jbd2_journal_update_superblock() - Update journal sb on disk. - * @journal: The journal to update. - * @wait: Set to '0' if you don't want to wait for IO completion. - * - * Update a journal's dynamic superblock fields and write it to disk, - * optionally waiting for the IO to complete. - */ -void jbd2_journal_update_superblock(journal_t *journal, int wait) -{ - journal_superblock_t *sb = journal->j_superblock; - struct buffer_head *bh = journal->j_sb_buffer; - /* * As a special case, if the on-disk copy is already marked as needing - * no recovery (s_start == 0) and there are no outstanding transactions - * in the filesystem, then we can safely defer the superblock update - * until the next commit by setting JBD2_FLUSHED. This avoids + * no recovery (s_start == 0), then we can safely defer the superblock + * update until the next commit by setting JBD2_FLUSHED. This avoids * attempting a write to a potential-readonly device. */ - if (sb->s_start == 0 && journal->j_tail_sequence == - journal->j_transaction_sequence) { + if (sb->s_start == 0) { jbd_debug(1, "JBD2: Skipping superblock update on recovered sb " "(start %ld, seq %d, errno %d)\n", journal->j_tail, journal->j_tail_sequence, journal->j_errno); - goto out; + journal->j_flags |= JBD2_FLUSHED; + } else { + /* Lock here to make assertions happy... */ + mutex_lock(&journal->j_checkpoint_mutex); + /* + * Update log tail information. We use WRITE_FUA since new + * transaction will start reusing journal space and so we + * must make sure information about current log tail is on + * disk before that. + */ + jbd2_journal_update_sb_log_tail(journal, + journal->j_tail_sequence, + journal->j_tail, + WRITE_FUA); + mutex_unlock(&journal->j_checkpoint_mutex); } + return jbd2_journal_start_thread(journal); +} +static void jbd2_write_superblock(journal_t *journal, int write_op) +{ + struct buffer_head *bh = journal->j_sb_buffer; + int ret; + + trace_jbd2_write_superblock(journal, write_op); + if (!(journal->j_flags & JBD2_BARRIER)) + write_op &= ~(REQ_FUA | REQ_FLUSH); + lock_buffer(bh); if (buffer_write_io_error(bh)) { /* * Oh, dear. A previous attempt to write the journal @@ -1161,48 +1258,106 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait) clear_buffer_write_io_error(bh); set_buffer_uptodate(bh); } + get_bh(bh); + bh->b_end_io = end_buffer_write_sync; + ret = submit_bh(write_op, bh); + wait_on_buffer(bh); + if (buffer_write_io_error(bh)) { + clear_buffer_write_io_error(bh); + set_buffer_uptodate(bh); + ret = -EIO; + } + if (ret) { + printk(KERN_ERR "JBD2: Error %d detected when updating " + "journal superblock for %s.\n", ret, + journal->j_devname); + } +} +/** + * jbd2_journal_update_sb_log_tail() - Update log tail in journal sb on disk. + * @journal: The journal to update. + * @tail_tid: TID of the new transaction at the tail of the log + * @tail_block: The first block of the transaction at the tail of the log + * @write_op: With which operation should we write the journal sb + * + * Update a journal's superblock information about log tail and write it to + * disk, waiting for the IO to complete. + */ +void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid, + unsigned long tail_block, int write_op) +{ + journal_superblock_t *sb = journal->j_superblock; + + BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex)); + jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n", + tail_block, tail_tid); + + sb->s_sequence = cpu_to_be32(tail_tid); + sb->s_start = cpu_to_be32(tail_block); + + jbd2_write_superblock(journal, write_op); + + /* Log is no longer empty */ + write_lock(&journal->j_state_lock); + WARN_ON(!sb->s_sequence); + journal->j_flags &= ~JBD2_FLUSHED; + write_unlock(&journal->j_state_lock); +} + +/** + * jbd2_mark_journal_empty() - Mark on disk journal as empty. + * @journal: The journal to update. + * + * Update a journal's dynamic superblock fields to show that journal is empty. + * Write updated superblock to disk waiting for IO to complete. + */ +static void jbd2_mark_journal_empty(journal_t *journal) +{ + journal_superblock_t *sb = journal->j_superblock; + + BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex)); read_lock(&journal->j_state_lock); - jbd_debug(1, "JBD2: updating superblock (start %ld, seq %d, errno %d)\n", - journal->j_tail, journal->j_tail_sequence, journal->j_errno); + jbd_debug(1, "JBD2: Marking journal as empty (seq %d)\n", + journal->j_tail_sequence); sb->s_sequence = cpu_to_be32(journal->j_tail_sequence); - sb->s_start = cpu_to_be32(journal->j_tail); - sb->s_errno = cpu_to_be32(journal->j_errno); + sb->s_start = cpu_to_be32(0); read_unlock(&journal->j_state_lock); - BUFFER_TRACE(bh, "marking dirty"); - mark_buffer_dirty(bh); - if (wait) { - sync_dirty_buffer(bh); - if (buffer_write_io_error(bh)) { - printk(KERN_ERR "JBD2: I/O error detected " - "when updating journal superblock for %s.\n", - journal->j_devname); - clear_buffer_write_io_error(bh); - set_buffer_uptodate(bh); - } - } else - write_dirty_buffer(bh, WRITE); - -out: - /* If we have just flushed the log (by marking s_start==0), then - * any future commit will have to be careful to update the - * superblock again to re-record the true start of the log. */ + jbd2_write_superblock(journal, WRITE_FUA); + /* Log is no longer empty */ write_lock(&journal->j_state_lock); - if (sb->s_start) - journal->j_flags &= ~JBD2_FLUSHED; - else - journal->j_flags |= JBD2_FLUSHED; + journal->j_flags |= JBD2_FLUSHED; write_unlock(&journal->j_state_lock); } + +/** + * jbd2_journal_update_sb_errno() - Update error in the journal. + * @journal: The journal to update. + * + * Update a journal's errno. Write updated superblock to disk waiting for IO + * to complete. + */ +static void jbd2_journal_update_sb_errno(journal_t *journal) +{ + journal_superblock_t *sb = journal->j_superblock; + + read_lock(&journal->j_state_lock); + jbd_debug(1, "JBD2: updating superblock error (errno %d)\n", + journal->j_errno); + sb->s_errno = cpu_to_be32(journal->j_errno); + read_unlock(&journal->j_state_lock); + + jbd2_write_superblock(journal, WRITE_SYNC); +} + /* * Read the superblock for a given journal, performing initial * validation of the format. */ - static int journal_get_superblock(journal_t *journal) { struct buffer_head *bh; @@ -1396,14 +1551,11 @@ int jbd2_journal_destroy(journal_t *journal) if (journal->j_sb_buffer) { if (!is_journal_aborted(journal)) { - /* We can now mark the journal as empty. */ - journal->j_tail = 0; - journal->j_tail_sequence = - ++journal->j_transaction_sequence; - jbd2_journal_update_superblock(journal, 1); - } else { + mutex_lock(&journal->j_checkpoint_mutex); + jbd2_mark_journal_empty(journal); + mutex_unlock(&journal->j_checkpoint_mutex); + } else err = -EIO; - } brelse(journal->j_sb_buffer); } @@ -1550,61 +1702,6 @@ void jbd2_journal_clear_features(journal_t *journal, unsigned long compat, EXPORT_SYMBOL(jbd2_journal_clear_features); /** - * int jbd2_journal_update_format () - Update on-disk journal structure. - * @journal: Journal to act on. - * - * Given an initialised but unloaded journal struct, poke about in the - * on-disk structure to update it to the most recent supported version. - */ -int jbd2_journal_update_format (journal_t *journal) -{ - journal_superblock_t *sb; - int err; - - err = journal_get_superblock(journal); - if (err) - return err; - - sb = journal->j_superblock; - - switch (be32_to_cpu(sb->s_header.h_blocktype)) { - case JBD2_SUPERBLOCK_V2: - return 0; - case JBD2_SUPERBLOCK_V1: - return journal_convert_superblock_v1(journal, sb); - default: - break; - } - return -EINVAL; -} - -static int journal_convert_superblock_v1(journal_t *journal, - journal_superblock_t *sb) -{ - int offset, blocksize; - struct buffer_head *bh; - - printk(KERN_WARNING - "JBD2: Converting superblock from version 1 to 2.\n"); - - /* Pre-initialise new fields to zero */ - offset = ((char *) &(sb->s_feature_compat)) - ((char *) sb); - blocksize = be32_to_cpu(sb->s_blocksize); - memset(&sb->s_feature_compat, 0, blocksize-offset); - - sb->s_nr_users = cpu_to_be32(1); - sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2); - journal->j_format_version = 2; - - bh = journal->j_sb_buffer; - BUFFER_TRACE(bh, "marking dirty"); - mark_buffer_dirty(bh); - sync_dirty_buffer(bh); - return 0; -} - - -/** * int jbd2_journal_flush () - Flush journal * @journal: Journal to act on. * @@ -1617,7 +1714,6 @@ int jbd2_journal_flush(journal_t *journal) { int err = 0; transaction_t *transaction = NULL; - unsigned long old_tail; write_lock(&journal->j_state_lock); @@ -1652,6 +1748,7 @@ int jbd2_journal_flush(journal_t *journal) if (is_journal_aborted(journal)) return -EIO; + mutex_lock(&journal->j_checkpoint_mutex); jbd2_cleanup_journal_tail(journal); /* Finally, mark the journal as really needing no recovery. @@ -1659,14 +1756,9 @@ int jbd2_journal_flush(journal_t *journal) * the magic code for a fully-recovered superblock. Any future * commits of data to the journal will restore the current * s_start value. */ + jbd2_mark_journal_empty(journal); + mutex_unlock(&journal->j_checkpoint_mutex); write_lock(&journal->j_state_lock); - old_tail = journal->j_tail; - journal->j_tail = 0; - write_unlock(&journal->j_state_lock); - jbd2_journal_update_superblock(journal, 1); - write_lock(&journal->j_state_lock); - journal->j_tail = old_tail; - J_ASSERT(!journal->j_running_transaction); J_ASSERT(!journal->j_committing_transaction); J_ASSERT(!journal->j_checkpoint_transactions); @@ -1706,8 +1798,12 @@ int jbd2_journal_wipe(journal_t *journal, int write) write ? "Clearing" : "Ignoring"); err = jbd2_journal_skip_recovery(journal); - if (write) - jbd2_journal_update_superblock(journal, 1); + if (write) { + /* Lock to make assertions happy... */ + mutex_lock(&journal->j_checkpoint_mutex); + jbd2_mark_journal_empty(journal); + mutex_unlock(&journal->j_checkpoint_mutex); + } no_recovery: return err; @@ -1757,7 +1853,7 @@ static void __journal_abort_soft (journal_t *journal, int errno) __jbd2_journal_abort_hard(journal); if (errno) - jbd2_journal_update_superblock(journal, 1); + jbd2_journal_update_sb_errno(journal); } /** @@ -2015,7 +2111,7 @@ static struct kmem_cache *jbd2_journal_head_cache; static atomic_t nr_journal_heads = ATOMIC_INIT(0); #endif -static int journal_init_jbd2_journal_head_cache(void) +static int jbd2_journal_init_journal_head_cache(void) { int retval; @@ -2033,7 +2129,7 @@ static int journal_init_jbd2_journal_head_cache(void) return retval; } -static void jbd2_journal_destroy_jbd2_journal_head_cache(void) +static void jbd2_journal_destroy_journal_head_cache(void) { if (jbd2_journal_head_cache) { kmem_cache_destroy(jbd2_journal_head_cache); @@ -2321,7 +2417,7 @@ static void __exit jbd2_remove_jbd_stats_proc_entry(void) struct kmem_cache *jbd2_handle_cache, *jbd2_inode_cache; -static int __init journal_init_handle_cache(void) +static int __init jbd2_journal_init_handle_cache(void) { jbd2_handle_cache = KMEM_CACHE(jbd2_journal_handle, SLAB_TEMPORARY); if (jbd2_handle_cache == NULL) { @@ -2356,17 +2452,20 @@ static int __init journal_init_caches(void) ret = jbd2_journal_init_revoke_caches(); if (ret == 0) - ret = journal_init_jbd2_journal_head_cache(); + ret = jbd2_journal_init_journal_head_cache(); + if (ret == 0) + ret = jbd2_journal_init_handle_cache(); if (ret == 0) - ret = journal_init_handle_cache(); + ret = jbd2_journal_init_transaction_cache(); return ret; } static void jbd2_journal_destroy_caches(void) { jbd2_journal_destroy_revoke_caches(); - jbd2_journal_destroy_jbd2_journal_head_cache(); + jbd2_journal_destroy_journal_head_cache(); jbd2_journal_destroy_handle_cache(); + jbd2_journal_destroy_transaction_cache(); jbd2_journal_destroy_slabs(); } diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index da6d7baf139..c1a03354a22 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -21,6 +21,7 @@ #include <linux/jbd2.h> #include <linux/errno.h> #include <linux/crc32.h> +#include <linux/blkdev.h> #endif /* @@ -265,7 +266,9 @@ int jbd2_journal_recover(journal_t *journal) err2 = sync_blockdev(journal->j_fs_dev); if (!err) err = err2; - + /* Make sure all replayed data is on permanent storage */ + if (journal->j_flags & JBD2_BARRIER) + blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL); return err; } diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 30b2867d6cc..6973705d6a3 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -208,17 +208,13 @@ int __init jbd2_journal_init_revoke_caches(void) J_ASSERT(!jbd2_revoke_record_cache); J_ASSERT(!jbd2_revoke_table_cache); - jbd2_revoke_record_cache = kmem_cache_create("jbd2_revoke_record", - sizeof(struct jbd2_revoke_record_s), - 0, - SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY, - NULL); + jbd2_revoke_record_cache = KMEM_CACHE(jbd2_revoke_record_s, + SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY); if (!jbd2_revoke_record_cache) goto record_cache_failure; - jbd2_revoke_table_cache = kmem_cache_create("jbd2_revoke_table", - sizeof(struct jbd2_revoke_table_s), - 0, SLAB_TEMPORARY, NULL); + jbd2_revoke_table_cache = KMEM_CACHE(jbd2_revoke_table_s, + SLAB_TEMPORARY); if (!jbd2_revoke_table_cache) goto table_cache_failure; return 0; diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 35ae096bed5..ddcd3549c6c 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -33,6 +33,35 @@ static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh); static void __jbd2_journal_unfile_buffer(struct journal_head *jh); +static struct kmem_cache *transaction_cache; +int __init jbd2_journal_init_transaction_cache(void) +{ + J_ASSERT(!transaction_cache); + transaction_cache = kmem_cache_create("jbd2_transaction_s", + sizeof(transaction_t), + 0, + SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY, + NULL); + if (transaction_cache) + return 0; + return -ENOMEM; +} + +void jbd2_journal_destroy_transaction_cache(void) +{ + if (transaction_cache) { + kmem_cache_destroy(transaction_cache); + transaction_cache = NULL; + } +} + +void jbd2_journal_free_transaction(transaction_t *transaction) +{ + if (unlikely(ZERO_OR_NULL_PTR(transaction))) + return; + kmem_cache_free(transaction_cache, transaction); +} + /* * jbd2_get_transaction: obtain a new transaction_t object. * @@ -133,7 +162,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle, alloc_transaction: if (!journal->j_running_transaction) { - new_transaction = kzalloc(sizeof(*new_transaction), gfp_mask); + new_transaction = kmem_cache_alloc(transaction_cache, + gfp_mask | __GFP_ZERO); if (!new_transaction) { /* * If __GFP_FS is not present, then we may be @@ -162,7 +192,7 @@ repeat: if (is_journal_aborted(journal) || (journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) { read_unlock(&journal->j_state_lock); - kfree(new_transaction); + jbd2_journal_free_transaction(new_transaction); return -EROFS; } @@ -284,7 +314,7 @@ repeat: read_unlock(&journal->j_state_lock); lock_map_acquire(&handle->h_lockdep_map); - kfree(new_transaction); + jbd2_journal_free_transaction(new_transaction); return 0; } @@ -783,12 +813,12 @@ done: "Possible IO failure.\n"); page = jh2bh(jh)->b_page; offset = offset_in_page(jh2bh(jh)->b_data); - source = kmap_atomic(page, KM_USER0); + source = kmap_atomic(page); /* Fire data frozen trigger just before we copy the data */ jbd2_buffer_frozen_trigger(jh, source + offset, jh->b_triggers); memcpy(jh->b_frozen_data, source+offset, jh2bh(jh)->b_size); - kunmap_atomic(source, KM_USER0); + kunmap_atomic(source); /* * Now that the frozen data is saved off, we need to store @@ -1549,9 +1579,9 @@ __blist_del_buffer(struct journal_head **list, struct journal_head *jh) * of these pointers, it could go bad. Generally the caller needs to re-read * the pointer from the transaction_t. * - * Called under j_list_lock. The journal may not be locked. + * Called under j_list_lock. */ -void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh) +static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh) { struct journal_head **list = NULL; transaction_t *transaction; @@ -1646,10 +1676,8 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh) spin_lock(&journal->j_list_lock); if (jh->b_cp_transaction != NULL && jh->b_transaction == NULL) { /* written-back checkpointed metadata buffer */ - if (jh->b_jlist == BJ_None) { - JBUFFER_TRACE(jh, "remove from checkpoint list"); - __jbd2_journal_remove_checkpoint(jh); - } + JBUFFER_TRACE(jh, "remove from checkpoint list"); + __jbd2_journal_remove_checkpoint(jh); } spin_unlock(&journal->j_list_lock); out: @@ -1949,6 +1977,8 @@ zap_buffer_unlocked: clear_buffer_mapped(bh); clear_buffer_req(bh); clear_buffer_new(bh); + clear_buffer_delay(bh); + clear_buffer_unwritten(bh); bh->b_bdev = NULL; return may_free; } diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c index 5b6c9d1a2fb..96ed3c9ec3f 100644 --- a/fs/jffs2/compr.c +++ b/fs/jffs2/compr.c @@ -340,7 +340,7 @@ int jffs2_unregister_compressor(struct jffs2_compressor *comp) if (comp->usecount) { spin_unlock(&jffs2_compressor_list_lock); - printk(KERN_WARNING "JFFS2: Compressor modul is in use. Unregister failed.\n"); + printk(KERN_WARNING "JFFS2: Compressor module is in use. Unregister failed.\n"); return -1; } list_del(&comp->list); diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index a01cdad6aad..eafb8d37a6f 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -335,7 +335,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl void *ebuf; uint32_t ofs; size_t retlen; - int ret = -EIO; + int ret; unsigned long *wordebuf; ret = mtd_point(c->mtd, jeb->offset, c->sector_size, &retlen, diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 2e0123867cb..c0d5c9d770d 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -561,9 +561,9 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent) ret = -ENOMEM; D1(printk(KERN_DEBUG "jffs2_do_fill_super(): d_alloc_root()\n")); - sb->s_root = d_alloc_root(root_i); + sb->s_root = d_make_root(root_i); if (!sb->s_root) - goto out_root_i; + goto out_root; sb->s_maxbytes = 0xFFFFFFFF; sb->s_blocksize = PAGE_CACHE_SIZE; @@ -573,8 +573,6 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent) jffs2_start_garbage_collect_thread(c); return 0; - out_root_i: - iput(root_i); out_root: jffs2_free_ino_caches(c); jffs2_free_raw_node_refs(c); diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index 5f7c160ea64..07c91ca6017 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -220,12 +220,6 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, umode_t mode) dquot_initialize(dip); - /* link count overflow on parent directory ? */ - if (dip->i_nlink == JFS_LINK_MAX) { - rc = -EMLINK; - goto out1; - } - /* * search parent directory for entry/freespace * (dtSearch() returns parent directory page pinned) @@ -806,9 +800,6 @@ static int jfs_link(struct dentry *old_dentry, jfs_info("jfs_link: %s %s", old_dentry->d_name.name, dentry->d_name.name); - if (ip->i_nlink == JFS_LINK_MAX) - return -EMLINK; - dquot_initialize(dir); tid = txBegin(ip->i_sb, 0); @@ -1138,10 +1129,6 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry, rc = -ENOTEMPTY; goto out3; } - } else if ((new_dir != old_dir) && - (new_dir->i_nlink == JFS_LINK_MAX)) { - rc = -EMLINK; - goto out3; } } else if (new_ip) { IWRITE_LOCK(new_ip, RDWRLOCK_NORMAL); diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 682bca642f3..4a82950f412 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -441,6 +441,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; sb->s_fs_info = sbi; + sb->s_max_links = JFS_LINK_MAX; sbi->sb = sb; sbi->uid = sbi->gid = sbi->umask = -1; @@ -521,7 +522,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) ret = PTR_ERR(inode); goto out_no_rw; } - sb->s_root = d_alloc_root(inode); + sb->s_root = d_make_root(inode); if (!sb->s_root) goto out_no_root; @@ -539,7 +540,6 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) out_no_root: jfs_err("jfs_read_super: get root dentry failed"); - iput(inode); out_no_rw: rc = jfs_umount(sb); @@ -860,8 +860,14 @@ static int __init init_jfs_fs(void) jfs_proc_init(); #endif - return register_filesystem(&jfs_fs_type); + rc = register_filesystem(&jfs_fs_type); + if (!rc) + return 0; +#ifdef PROC_FS_JFS + jfs_proc_clean(); +#endif + kthread_stop(jfsSyncThread); kill_committask: for (i = 0; i < commit_threads; i++) kthread_stop(jfsCommitThread[i]); diff --git a/fs/libfs.c b/fs/libfs.c index 5b2dbb3ba4f..4a0d1f06da5 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -3,7 +3,7 @@ * Library for filesystems writers. */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/pagemap.h> #include <linux/slab.h> #include <linux/mount.h> @@ -491,11 +491,9 @@ int simple_fill_super(struct super_block *s, unsigned long magic, inode->i_op = &simple_dir_inode_operations; inode->i_fop = &simple_dir_operations; set_nlink(inode, 2); - root = d_alloc_root(inode); - if (!root) { - iput(inode); + root = d_make_root(inode); + if (!root) return -ENOMEM; - } for (i = 0; !files->name || files->name[0]; i++, files++) { if (!files->name) continue; @@ -536,7 +534,7 @@ int simple_pin_fs(struct file_system_type *type, struct vfsmount **mount, int *c spin_lock(&pin_fs_lock); if (unlikely(!*mount)) { spin_unlock(&pin_fs_lock); - mnt = vfs_kern_mount(type, 0, type->name, NULL); + mnt = vfs_kern_mount(type, MS_KERNMOUNT, type->name, NULL); if (IS_ERR(mnt)) return PTR_ERR(mnt); spin_lock(&pin_fs_lock); diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c index f848b52c67b..3ddcbb1c0a4 100644 --- a/fs/lockd/clnt4xdr.c +++ b/fs/lockd/clnt4xdr.c @@ -598,7 +598,7 @@ static struct rpc_procinfo nlm4_procedures[] = { PROC(GRANTED_RES, res, norep), }; -struct rpc_version nlm_version4 = { +const struct rpc_version nlm_version4 = { .number = 4, .nrprocs = ARRAY_SIZE(nlm4_procedures), .procs = nlm4_procedures, diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index 8d4ea8351e3..ba1dc2eebd1 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -62,7 +62,8 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init) host = nlmclnt_lookup_host(nlm_init->address, nlm_init->addrlen, nlm_init->protocol, nlm_version, - nlm_init->hostname, nlm_init->noresvport); + nlm_init->hostname, nlm_init->noresvport, + nlm_init->net); if (host == NULL) { lockd_down(); return ERR_PTR(-ENOLCK); diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c index 180ac34feb9..3d35e3e80c1 100644 --- a/fs/lockd/clntxdr.c +++ b/fs/lockd/clntxdr.c @@ -596,19 +596,19 @@ static struct rpc_procinfo nlm_procedures[] = { PROC(GRANTED_RES, res, norep), }; -static struct rpc_version nlm_version1 = { +static const struct rpc_version nlm_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(nlm_procedures), .procs = nlm_procedures, }; -static struct rpc_version nlm_version3 = { +static const struct rpc_version nlm_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(nlm_procedures), .procs = nlm_procedures, }; -static struct rpc_version *nlm_versions[] = { +static const struct rpc_version *nlm_versions[] = { [1] = &nlm_version1, [3] = &nlm_version3, #ifdef CONFIG_LOCKD_V4 @@ -618,7 +618,7 @@ static struct rpc_version *nlm_versions[] = { static struct rpc_stat nlm_rpc_stats; -struct rpc_program nlm_program = { +const struct rpc_program nlm_program = { .name = "lockd", .number = NLM_PROGRAM, .nrvers = ARRAY_SIZE(nlm_versions), diff --git a/fs/lockd/host.c b/fs/lockd/host.c index 6f29836ec0c..eb75ca7c2d6 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -17,6 +17,8 @@ #include <linux/lockd/lockd.h> #include <linux/mutex.h> +#include <linux/sunrpc/svc_xprt.h> + #include <net/ipv6.h> #define NLMDBG_FACILITY NLMDBG_HOSTCACHE @@ -54,6 +56,7 @@ struct nlm_lookup_host_info { const char *hostname; /* remote's hostname */ const size_t hostname_len; /* it's length */ const int noresvport; /* use non-priv port */ + struct net *net; /* network namespace to bind */ }; /* @@ -155,6 +158,7 @@ static struct nlm_host *nlm_alloc_host(struct nlm_lookup_host_info *ni, INIT_LIST_HEAD(&host->h_reclaim); host->h_nsmhandle = nsm; host->h_addrbuf = nsm->sm_addrbuf; + host->net = ni->net; out: return host; @@ -206,7 +210,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const unsigned short protocol, const u32 version, const char *hostname, - int noresvport) + int noresvport, + struct net *net) { struct nlm_lookup_host_info ni = { .server = 0, @@ -217,6 +222,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, .hostname = hostname, .hostname_len = strlen(hostname), .noresvport = noresvport, + .net = net, }; struct hlist_head *chain; struct hlist_node *pos; @@ -231,6 +237,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, chain = &nlm_client_hosts[nlm_hash_address(sap)]; hlist_for_each_entry(host, pos, chain, h_hash) { + if (host->net != net) + continue; if (!rpc_cmp_addr(nlm_addr(host), sap)) continue; @@ -318,6 +326,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, struct nsm_handle *nsm = NULL; struct sockaddr *src_sap = svc_daddr(rqstp); size_t src_len = rqstp->rq_daddrlen; + struct net *net = rqstp->rq_xprt->xpt_net; struct nlm_lookup_host_info ni = { .server = 1, .sap = svc_addr(rqstp), @@ -326,6 +335,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, .version = rqstp->rq_vers, .hostname = hostname, .hostname_len = hostname_len, + .net = net, }; dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__, @@ -339,6 +349,8 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, chain = &nlm_server_hosts[nlm_hash_address(ni.sap)]; hlist_for_each_entry(host, pos, chain, h_hash) { + if (host->net != net) + continue; if (!rpc_cmp_addr(nlm_addr(host), ni.sap)) continue; @@ -431,7 +443,7 @@ nlm_bind_host(struct nlm_host *host) .to_retries = 5U, }; struct rpc_create_args args = { - .net = &init_net, + .net = host->net, .protocol = host->h_proto, .address = nlm_addr(host), .addrsize = host->h_addrlen, @@ -553,12 +565,8 @@ void nlm_host_rebooted(const struct nlm_reboot *info) nsm_release(nsm); } -/* - * Shut down the hosts module. - * Note that this routine is called only at server shutdown time. - */ void -nlm_shutdown_hosts(void) +nlm_shutdown_hosts_net(struct net *net) { struct hlist_head *chain; struct hlist_node *pos; @@ -570,6 +578,8 @@ nlm_shutdown_hosts(void) /* First, make all hosts eligible for gc */ dprintk("lockd: nuking all hosts...\n"); for_each_host(host, pos, chain, nlm_server_hosts) { + if (net && host->net != net) + continue; host->h_expires = jiffies - 1; if (host->h_rpcclnt) { rpc_shutdown_client(host->h_rpcclnt); @@ -580,15 +590,29 @@ nlm_shutdown_hosts(void) /* Then, perform a garbage collection pass */ nlm_gc_hosts(); mutex_unlock(&nlm_host_mutex); +} + +/* + * Shut down the hosts module. + * Note that this routine is called only at server shutdown time. + */ +void +nlm_shutdown_hosts(void) +{ + struct hlist_head *chain; + struct hlist_node *pos; + struct nlm_host *host; + + nlm_shutdown_hosts_net(NULL); /* complain if any hosts are left */ if (nrhosts != 0) { printk(KERN_WARNING "lockd: couldn't shutdown host module!\n"); dprintk("lockd: %lu hosts left:\n", nrhosts); for_each_host(host, pos, chain, nlm_server_hosts) { - dprintk(" %s (cnt %d use %d exp %ld)\n", + dprintk(" %s (cnt %d use %d exp %ld net %p)\n", host->h_name, atomic_read(&host->h_count), - host->h_inuse, host->h_expires); + host->h_inuse, host->h_expires, host->net); } } } diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index 65ba36b80a9..7ef14b3c5be 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -47,7 +47,7 @@ struct nsm_res { u32 state; }; -static struct rpc_program nsm_program; +static const struct rpc_program nsm_program; static LIST_HEAD(nsm_handles); static DEFINE_SPINLOCK(nsm_lock); @@ -62,14 +62,14 @@ static inline struct sockaddr *nsm_addr(const struct nsm_handle *nsm) return (struct sockaddr *)&nsm->sm_addr; } -static struct rpc_clnt *nsm_create(void) +static struct rpc_clnt *nsm_create(struct net *net) { struct sockaddr_in sin = { .sin_family = AF_INET, .sin_addr.s_addr = htonl(INADDR_LOOPBACK), }; struct rpc_create_args args = { - .net = &init_net, + .net = net, .protocol = XPRT_TRANSPORT_UDP, .address = (struct sockaddr *)&sin, .addrsize = sizeof(sin), @@ -83,7 +83,8 @@ static struct rpc_clnt *nsm_create(void) return rpc_create(&args); } -static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res) +static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res, + struct net *net) { struct rpc_clnt *clnt; int status; @@ -99,7 +100,7 @@ static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res) .rpc_resp = res, }; - clnt = nsm_create(); + clnt = nsm_create(net); if (IS_ERR(clnt)) { status = PTR_ERR(clnt); dprintk("lockd: failed to create NSM upcall transport, " @@ -149,7 +150,7 @@ int nsm_monitor(const struct nlm_host *host) */ nsm->sm_mon_name = nsm_use_hostnames ? nsm->sm_name : nsm->sm_addrbuf; - status = nsm_mon_unmon(nsm, NSMPROC_MON, &res); + status = nsm_mon_unmon(nsm, NSMPROC_MON, &res, host->net); if (unlikely(res.status != 0)) status = -EIO; if (unlikely(status < 0)) { @@ -183,7 +184,7 @@ void nsm_unmonitor(const struct nlm_host *host) && nsm->sm_monitored && !nsm->sm_sticky) { dprintk("lockd: nsm_unmonitor(%s)\n", nsm->sm_name); - status = nsm_mon_unmon(nsm, NSMPROC_UNMON, &res); + status = nsm_mon_unmon(nsm, NSMPROC_UNMON, &res, host->net); if (res.status != 0) status = -EIO; if (status < 0) @@ -534,19 +535,19 @@ static struct rpc_procinfo nsm_procedures[] = { }, }; -static struct rpc_version nsm_version1 = { +static const struct rpc_version nsm_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(nsm_procedures), .procs = nsm_procedures }; -static struct rpc_version * nsm_version[] = { +static const struct rpc_version *nsm_version[] = { [1] = &nsm_version1, }; static struct rpc_stat nsm_stats; -static struct rpc_program nsm_program = { +static const struct rpc_program nsm_program = { .name = "statd", .number = NSM_PROGRAM, .nrvers = ARRAY_SIZE(nsm_version), diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h new file mode 100644 index 00000000000..ce227e0fbc5 --- /dev/null +++ b/fs/lockd/netns.h @@ -0,0 +1,12 @@ +#ifndef __LOCKD_NETNS_H__ +#define __LOCKD_NETNS_H__ + +#include <net/netns/generic.h> + +struct lockd_net { + unsigned int nlmsvc_users; +}; + +extern int lockd_net_id; + +#endif diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index c061b9aa7dd..2774e1013b3 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -35,6 +35,8 @@ #include <linux/lockd/lockd.h> #include <linux/nfs.h> +#include "netns.h" + #define NLMDBG_FACILITY NLMDBG_SVC #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) #define ALLOWED_SIGS (sigmask(SIGKILL)) @@ -50,6 +52,8 @@ static struct task_struct *nlmsvc_task; static struct svc_rqst *nlmsvc_rqst; unsigned long nlmsvc_timeout; +int lockd_net_id; + /* * These can be set at insmod time (useful for NFS as root filesystem), * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 @@ -189,27 +193,29 @@ lockd(void *vrqstp) } static int create_lockd_listener(struct svc_serv *serv, const char *name, - const int family, const unsigned short port) + struct net *net, const int family, + const unsigned short port) { struct svc_xprt *xprt; - xprt = svc_find_xprt(serv, name, family, 0); + xprt = svc_find_xprt(serv, name, net, family, 0); if (xprt == NULL) - return svc_create_xprt(serv, name, &init_net, family, port, + return svc_create_xprt(serv, name, net, family, port, SVC_SOCK_DEFAULTS); svc_xprt_put(xprt); return 0; } -static int create_lockd_family(struct svc_serv *serv, const int family) +static int create_lockd_family(struct svc_serv *serv, struct net *net, + const int family) { int err; - err = create_lockd_listener(serv, "udp", family, nlm_udpport); + err = create_lockd_listener(serv, "udp", net, family, nlm_udpport); if (err < 0) return err; - return create_lockd_listener(serv, "tcp", family, nlm_tcpport); + return create_lockd_listener(serv, "tcp", net, family, nlm_tcpport); } /* @@ -222,16 +228,16 @@ static int create_lockd_family(struct svc_serv *serv, const int family) * Returns zero if all listeners are available; otherwise a * negative errno value is returned. */ -static int make_socks(struct svc_serv *serv) +static int make_socks(struct svc_serv *serv, struct net *net) { static int warned; int err; - err = create_lockd_family(serv, PF_INET); + err = create_lockd_family(serv, net, PF_INET); if (err < 0) goto out_err; - err = create_lockd_family(serv, PF_INET6); + err = create_lockd_family(serv, net, PF_INET6); if (err < 0 && err != -EAFNOSUPPORT) goto out_err; @@ -245,6 +251,47 @@ out_err: return err; } +static int lockd_up_net(struct net *net) +{ + struct lockd_net *ln = net_generic(net, lockd_net_id); + struct svc_serv *serv = nlmsvc_rqst->rq_server; + int error; + + if (ln->nlmsvc_users) + return 0; + + error = svc_rpcb_setup(serv, net); + if (error) + goto err_rpcb; + + error = make_socks(serv, net); + if (error < 0) + goto err_socks; + return 0; + +err_socks: + svc_rpcb_cleanup(serv, net); +err_rpcb: + return error; +} + +static void lockd_down_net(struct net *net) +{ + struct lockd_net *ln = net_generic(net, lockd_net_id); + struct svc_serv *serv = nlmsvc_rqst->rq_server; + + if (ln->nlmsvc_users) { + if (--ln->nlmsvc_users == 0) { + nlm_shutdown_hosts_net(net); + svc_shutdown_net(serv, net); + } + } else { + printk(KERN_ERR "lockd_down_net: no users! task=%p, net=%p\n", + nlmsvc_task, net); + BUG(); + } +} + /* * Bring up the lockd process if it's not already up. */ @@ -252,13 +299,16 @@ int lockd_up(void) { struct svc_serv *serv; int error = 0; + struct net *net = current->nsproxy->net_ns; mutex_lock(&nlmsvc_mutex); /* * Check whether we're already up and running. */ - if (nlmsvc_rqst) + if (nlmsvc_rqst) { + error = lockd_up_net(net); goto out; + } /* * Sanity check: if there's no pid, @@ -275,7 +325,7 @@ int lockd_up(void) goto out; } - error = make_socks(serv); + error = make_socks(serv, net); if (error < 0) goto destroy_and_out; @@ -313,8 +363,12 @@ int lockd_up(void) destroy_and_out: svc_destroy(serv); out: - if (!error) + if (!error) { + struct lockd_net *ln = net_generic(net, lockd_net_id); + + ln->nlmsvc_users++; nlmsvc_users++; + } mutex_unlock(&nlmsvc_mutex); return error; } @@ -328,8 +382,10 @@ lockd_down(void) { mutex_lock(&nlmsvc_mutex); if (nlmsvc_users) { - if (--nlmsvc_users) + if (--nlmsvc_users) { + lockd_down_net(current->nsproxy->net_ns); goto out; + } } else { printk(KERN_ERR "lockd_down: no users! task=%p\n", nlmsvc_task); @@ -497,24 +553,55 @@ module_param_call(nlm_tcpport, param_set_port, param_get_int, module_param(nsm_use_hostnames, bool, 0644); module_param(nlm_max_connections, uint, 0644); +static int lockd_init_net(struct net *net) +{ + return 0; +} + +static void lockd_exit_net(struct net *net) +{ +} + +static struct pernet_operations lockd_net_ops = { + .init = lockd_init_net, + .exit = lockd_exit_net, + .id = &lockd_net_id, + .size = sizeof(struct lockd_net), +}; + + /* * Initialising and terminating the module. */ static int __init init_nlm(void) { + int err; + #ifdef CONFIG_SYSCTL + err = -ENOMEM; nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root); - return nlm_sysctl_table ? 0 : -ENOMEM; -#else + if (nlm_sysctl_table == NULL) + goto err_sysctl; +#endif + err = register_pernet_subsys(&lockd_net_ops); + if (err) + goto err_pernet; return 0; + +err_pernet: +#ifdef CONFIG_SYSCTL + unregister_sysctl_table(nlm_sysctl_table); #endif +err_sysctl: + return err; } static void __exit exit_nlm(void) { /* FIXME: delete all NLM clients */ nlm_shutdown_hosts(); + unregister_pernet_subsys(&lockd_net_ops); #ifdef CONFIG_SYSCTL unregister_sysctl_table(nlm_sysctl_table); #endif diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index f0179c3745d..e46353f41a4 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -46,7 +46,6 @@ static void nlmsvc_remove_block(struct nlm_block *block); static int nlmsvc_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock); static void nlmsvc_freegrantargs(struct nlm_rqst *call); static const struct rpc_call_ops nlmsvc_grant_ops; -static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie); /* * The list of blocked locks to retry @@ -54,6 +53,35 @@ static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie); static LIST_HEAD(nlm_blocked); static DEFINE_SPINLOCK(nlm_blocked_lock); +#ifdef LOCKD_DEBUG +static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) +{ + /* + * We can get away with a static buffer because we're only + * called with BKL held. + */ + static char buf[2*NLM_MAXCOOKIELEN+1]; + unsigned int i, len = sizeof(buf); + char *p = buf; + + len--; /* allow for trailing \0 */ + if (len < 3) + return "???"; + for (i = 0 ; i < cookie->len ; i++) { + if (len < 2) { + strcpy(p-3, "..."); + break; + } + sprintf(p, "%02x", cookie->data[i]); + p += 2; + len -= 2; + } + *p = '\0'; + + return buf; +} +#endif + /* * Insert a blocked lock into the global list */ @@ -935,32 +963,3 @@ nlmsvc_retry_blocked(void) return timeout; } - -#ifdef RPC_DEBUG -static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) -{ - /* - * We can get away with a static buffer because we're only - * called with BKL held. - */ - static char buf[2*NLM_MAXCOOKIELEN+1]; - unsigned int i, len = sizeof(buf); - char *p = buf; - - len--; /* allow for trailing \0 */ - if (len < 3) - return "???"; - for (i = 0 ; i < cookie->len ; i++) { - if (len < 2) { - strcpy(p-3, "..."); - break; - } - sprintf(p, "%02x", cookie->data[i]); - p += 2; - len -= 2; - } - *p = '\0'; - - return buf; -} -#endif diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c index e97404d611e..9c501449450 100644 --- a/fs/logfs/dev_mtd.c +++ b/fs/logfs/dev_mtd.c @@ -152,9 +152,6 @@ static struct page *logfs_mtd_find_first_sb(struct super_block *sb, u64 *ofs) filler_t *filler = logfs_mtd_readpage; struct mtd_info *mtd = super->s_mtd; - if (!mtd_can_have_bb(mtd)) - return NULL; - *ofs = 0; while (mtd_block_isbad(mtd, *ofs)) { *ofs += mtd->erasesize; @@ -172,9 +169,6 @@ static struct page *logfs_mtd_find_last_sb(struct super_block *sb, u64 *ofs) filler_t *filler = logfs_mtd_readpage; struct mtd_info *mtd = super->s_mtd; - if (!mtd_can_have_bb(mtd)) - return NULL; - *ofs = mtd->size - mtd->erasesize; while (mtd_block_isbad(mtd, *ofs)) { *ofs -= mtd->erasesize; diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c index 501043e8966..bea5d1b9954 100644 --- a/fs/logfs/dir.c +++ b/fs/logfs/dir.c @@ -71,7 +71,7 @@ static int write_dir(struct inode *dir, struct logfs_disk_dentry *dd, static int write_inode(struct inode *inode) { - return __logfs_write_inode(inode, WF_LOCK); + return __logfs_write_inode(inode, NULL, WF_LOCK); } static s64 dir_seek_data(struct inode *inode, s64 pos) @@ -177,17 +177,17 @@ static struct page *logfs_get_dd_page(struct inode *dir, struct dentry *dentry) (filler_t *)logfs_readpage, NULL); if (IS_ERR(page)) return page; - dd = kmap_atomic(page, KM_USER0); + dd = kmap_atomic(page); BUG_ON(dd->namelen == 0); if (name->len != be16_to_cpu(dd->namelen) || memcmp(name->name, dd->name, name->len)) { - kunmap_atomic(dd, KM_USER0); + kunmap_atomic(dd); page_cache_release(page); continue; } - kunmap_atomic(dd, KM_USER0); + kunmap_atomic(dd); return page; } return NULL; @@ -365,9 +365,9 @@ static struct dentry *logfs_lookup(struct inode *dir, struct dentry *dentry, return NULL; } index = page->index; - dd = kmap_atomic(page, KM_USER0); + dd = kmap_atomic(page); ino = be64_to_cpu(dd->ino); - kunmap_atomic(dd, KM_USER0); + kunmap_atomic(dd); page_cache_release(page); inode = logfs_iget(dir->i_sb, ino); @@ -402,12 +402,12 @@ static int logfs_write_dir(struct inode *dir, struct dentry *dentry, if (!page) return -ENOMEM; - dd = kmap_atomic(page, KM_USER0); + dd = kmap_atomic(page); memset(dd, 0, sizeof(*dd)); dd->ino = cpu_to_be64(inode->i_ino); dd->type = logfs_type(inode); logfs_set_name(dd, &dentry->d_name); - kunmap_atomic(dd, KM_USER0); + kunmap_atomic(dd); err = logfs_write_buf(dir, page, WF_LOCK); unlock_page(page); @@ -558,9 +558,6 @@ static int logfs_link(struct dentry *old_dentry, struct inode *dir, { struct inode *inode = old_dentry->d_inode; - if (inode->i_nlink >= LOGFS_LINK_MAX) - return -EMLINK; - inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME; ihold(inode); inc_nlink(inode); @@ -579,9 +576,9 @@ static int logfs_get_dd(struct inode *dir, struct dentry *dentry, if (IS_ERR(page)) return PTR_ERR(page); *pos = page->index; - map = kmap_atomic(page, KM_USER0); + map = kmap_atomic(page); memcpy(dd, map, sizeof(*dd)); - kunmap_atomic(map, KM_USER0); + kunmap_atomic(map); page_cache_release(page); return 0; } diff --git a/fs/logfs/file.c b/fs/logfs/file.c index b548c87a86f..3886cded283 100644 --- a/fs/logfs/file.c +++ b/fs/logfs/file.c @@ -230,7 +230,9 @@ int logfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) return ret; mutex_lock(&inode->i_mutex); + logfs_get_wblocks(sb, NULL, WF_LOCK); logfs_write_anchor(sb); + logfs_put_wblocks(sb, NULL, WF_LOCK); mutex_unlock(&inode->i_mutex); return 0; diff --git a/fs/logfs/gc.c b/fs/logfs/gc.c index caa4419285d..d4efb061bdc 100644 --- a/fs/logfs/gc.c +++ b/fs/logfs/gc.c @@ -367,7 +367,7 @@ static struct gc_candidate *get_candidate(struct super_block *sb) int i, max_dist; struct gc_candidate *cand = NULL, *this; - max_dist = min(no_free_segments(sb), LOGFS_NO_AREAS); + max_dist = min(no_free_segments(sb), LOGFS_NO_AREAS - 1); for (i = max_dist; i >= 0; i--) { this = first_in_list(&super->s_low_list[i]); diff --git a/fs/logfs/inode.c b/fs/logfs/inode.c index 388df1aa35e..a422f42238b 100644 --- a/fs/logfs/inode.c +++ b/fs/logfs/inode.c @@ -286,7 +286,7 @@ static int logfs_write_inode(struct inode *inode, struct writeback_control *wbc) if (logfs_inode(inode)->li_flags & LOGFS_IF_STILLBORN) return 0; - ret = __logfs_write_inode(inode, flags); + ret = __logfs_write_inode(inode, NULL, flags); LOGFS_BUG_ON(ret, inode->i_sb); return ret; } @@ -363,7 +363,9 @@ static void logfs_init_once(void *_li) static int logfs_sync_fs(struct super_block *sb, int wait) { + logfs_get_wblocks(sb, NULL, WF_LOCK); logfs_write_anchor(sb); + logfs_put_wblocks(sb, NULL, WF_LOCK); return 0; } diff --git a/fs/logfs/journal.c b/fs/logfs/journal.c index 9da29706f91..1e1c369df22 100644 --- a/fs/logfs/journal.c +++ b/fs/logfs/journal.c @@ -612,7 +612,6 @@ static size_t __logfs_write_je(struct super_block *sb, void *buf, u16 type, if (len == 0) return logfs_write_header(super, header, 0, type); - BUG_ON(len > sb->s_blocksize); compr_len = logfs_compress(buf, data, len, sb->s_blocksize); if (compr_len < 0 || type == JE_ANCHOR) { memcpy(data, buf, len); diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h index 926373866a5..5f093760946 100644 --- a/fs/logfs/logfs.h +++ b/fs/logfs/logfs.h @@ -528,7 +528,7 @@ void logfs_destroy_inode_cache(void); void logfs_set_blocks(struct inode *inode, u64 no); /* these logically belong into inode.c but actually reside in readwrite.c */ int logfs_read_inode(struct inode *inode); -int __logfs_write_inode(struct inode *inode, long flags); +int __logfs_write_inode(struct inode *inode, struct page *, long flags); void logfs_evict_inode(struct inode *inode); /* journal.c */ @@ -577,6 +577,8 @@ void initialize_block_counters(struct page *page, struct logfs_block *block, __be64 *array, int page_is_empty); int logfs_exist_block(struct inode *inode, u64 bix); int get_page_reserve(struct inode *inode, struct page *page); +void logfs_get_wblocks(struct super_block *sb, struct page *page, int lock); +void logfs_put_wblocks(struct super_block *sb, struct page *page, int lock); extern struct logfs_block_ops indirect_block_ops; /* segment.c */ @@ -594,6 +596,7 @@ int logfs_init_mapping(struct super_block *sb); void logfs_sync_area(struct logfs_area *area); void logfs_sync_segments(struct super_block *sb); void freeseg(struct super_block *sb, u32 segno); +void free_areas(struct super_block *sb); /* area handling */ int logfs_init_areas(struct super_block *sb); diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c index 2ac4217b790..e3ab5e5a904 100644 --- a/fs/logfs/readwrite.c +++ b/fs/logfs/readwrite.c @@ -244,8 +244,7 @@ static void preunlock_page(struct super_block *sb, struct page *page, int lock) * is waiting for s_write_mutex. We annotate this fact by setting PG_pre_locked * in addition to PG_locked. */ -static void logfs_get_wblocks(struct super_block *sb, struct page *page, - int lock) +void logfs_get_wblocks(struct super_block *sb, struct page *page, int lock) { struct logfs_super *super = logfs_super(sb); @@ -260,8 +259,7 @@ static void logfs_get_wblocks(struct super_block *sb, struct page *page, } } -static void logfs_put_wblocks(struct super_block *sb, struct page *page, - int lock) +void logfs_put_wblocks(struct super_block *sb, struct page *page, int lock) { struct logfs_super *super = logfs_super(sb); @@ -424,7 +422,7 @@ static void inode_write_block(struct logfs_block *block) if (inode->i_ino == LOGFS_INO_MASTER) logfs_write_anchor(inode->i_sb); else { - ret = __logfs_write_inode(inode, 0); + ret = __logfs_write_inode(inode, NULL, 0); /* see indirect_write_block comment */ BUG_ON(ret); } @@ -519,9 +517,9 @@ static int indirect_write_alias(struct super_block *sb, ino = page->mapping->host->i_ino; logfs_unpack_index(page->index, &bix, &level); - child = kmap_atomic(page, KM_USER0); + child = kmap_atomic(page); val = child[pos]; - kunmap_atomic(child, KM_USER0); + kunmap_atomic(child); err = write_one_alias(sb, ino, bix, level, pos, val); if (err) return err; @@ -560,8 +558,13 @@ static void inode_free_block(struct super_block *sb, struct logfs_block *block) static void indirect_free_block(struct super_block *sb, struct logfs_block *block) { - ClearPagePrivate(block->page); - block->page->private = 0; + struct page *page = block->page; + + if (PagePrivate(page)) { + ClearPagePrivate(page); + page_cache_release(page); + set_page_private(page, 0); + } __free_block(sb, block); } @@ -650,8 +653,11 @@ static void alloc_data_block(struct inode *inode, struct page *page) logfs_unpack_index(page->index, &bix, &level); block = __alloc_block(inode->i_sb, inode->i_ino, bix, level); block->page = page; + SetPagePrivate(page); - page->private = (unsigned long)block; + page_cache_get(page); + set_page_private(page, (unsigned long) block); + block->ops = &indirect_block_ops; } @@ -667,9 +673,9 @@ static void alloc_indirect_block(struct inode *inode, struct page *page, alloc_data_block(inode, page); block = logfs_block(page); - array = kmap_atomic(page, KM_USER0); + array = kmap_atomic(page); initialize_block_counters(page, block, array, page_is_empty); - kunmap_atomic(array, KM_USER0); + kunmap_atomic(array); } static void block_set_pointer(struct page *page, int index, u64 ptr) @@ -679,10 +685,10 @@ static void block_set_pointer(struct page *page, int index, u64 ptr) u64 oldptr; BUG_ON(!block); - array = kmap_atomic(page, KM_USER0); + array = kmap_atomic(page); oldptr = be64_to_cpu(array[index]); array[index] = cpu_to_be64(ptr); - kunmap_atomic(array, KM_USER0); + kunmap_atomic(array); SetPageUptodate(page); block->full += !!(ptr & LOGFS_FULLY_POPULATED) @@ -695,9 +701,9 @@ static u64 block_get_pointer(struct page *page, int index) __be64 *block; u64 ptr; - block = kmap_atomic(page, KM_USER0); + block = kmap_atomic(page); ptr = be64_to_cpu(block[index]); - kunmap_atomic(block, KM_USER0); + kunmap_atomic(block); return ptr; } @@ -844,7 +850,7 @@ static u64 seek_holedata_loop(struct inode *inode, u64 bix, int data) } slot = get_bits(bix, SUBLEVEL(level)); - rblock = kmap_atomic(page, KM_USER0); + rblock = kmap_atomic(page); while (slot < LOGFS_BLOCK_FACTOR) { if (data && (rblock[slot] != 0)) break; @@ -855,12 +861,12 @@ static u64 seek_holedata_loop(struct inode *inode, u64 bix, int data) bix &= ~(increment - 1); } if (slot >= LOGFS_BLOCK_FACTOR) { - kunmap_atomic(rblock, KM_USER0); + kunmap_atomic(rblock); logfs_put_read_page(page); return bix; } bofs = be64_to_cpu(rblock[slot]); - kunmap_atomic(rblock, KM_USER0); + kunmap_atomic(rblock); logfs_put_read_page(page); if (!bofs) { BUG_ON(data); @@ -1570,11 +1576,15 @@ int logfs_write_buf(struct inode *inode, struct page *page, long flags) static int __logfs_delete(struct inode *inode, struct page *page) { long flags = WF_DELETE; + int err; inode->i_ctime = inode->i_mtime = CURRENT_TIME; if (page->index < I0_BLOCKS) return logfs_write_direct(inode, page, flags); + err = grow_inode(inode, page->index, 0); + if (err) + return err; return logfs_write_rec(inode, page, page->index, 0, flags); } @@ -1623,7 +1633,7 @@ int logfs_rewrite_block(struct inode *inode, u64 bix, u64 ofs, if (inode->i_ino == LOGFS_INO_MASTER) logfs_write_anchor(inode->i_sb); else { - err = __logfs_write_inode(inode, flags); + err = __logfs_write_inode(inode, page, flags); } } } @@ -1873,7 +1883,7 @@ int logfs_truncate(struct inode *inode, u64 target) logfs_get_wblocks(sb, NULL, 1); err = __logfs_truncate(inode, size); if (!err) - err = __logfs_write_inode(inode, 0); + err = __logfs_write_inode(inode, NULL, 0); logfs_put_wblocks(sb, NULL, 1); } @@ -1901,8 +1911,11 @@ static void move_page_to_inode(struct inode *inode, struct page *page) li->li_block = block; block->page = NULL; - page->private = 0; - ClearPagePrivate(page); + if (PagePrivate(page)) { + ClearPagePrivate(page); + page_cache_release(page); + set_page_private(page, 0); + } } static void move_inode_to_page(struct page *page, struct inode *inode) @@ -1918,8 +1931,12 @@ static void move_inode_to_page(struct page *page, struct inode *inode) BUG_ON(PagePrivate(page)); block->ops = &indirect_block_ops; block->page = page; - page->private = (unsigned long)block; - SetPagePrivate(page); + + if (!PagePrivate(page)) { + SetPagePrivate(page); + page_cache_get(page); + set_page_private(page, (unsigned long) block); + } block->inode = NULL; li->li_block = NULL; @@ -1944,9 +1961,9 @@ int logfs_read_inode(struct inode *inode) if (IS_ERR(page)) return PTR_ERR(page); - di = kmap_atomic(page, KM_USER0); + di = kmap_atomic(page); logfs_disk_to_inode(di, inode); - kunmap_atomic(di, KM_USER0); + kunmap_atomic(di); move_page_to_inode(inode, page); page_cache_release(page); return 0; @@ -1965,9 +1982,9 @@ static struct page *inode_to_page(struct inode *inode) if (!page) return NULL; - di = kmap_atomic(page, KM_USER0); + di = kmap_atomic(page); logfs_inode_to_disk(inode, di); - kunmap_atomic(di, KM_USER0); + kunmap_atomic(di); move_inode_to_page(page, inode); return page; } @@ -2024,13 +2041,13 @@ static void logfs_mod_segment_entry(struct super_block *sb, u32 segno, if (write) alloc_indirect_block(inode, page, 0); - se = kmap_atomic(page, KM_USER0); + se = kmap_atomic(page); change_se(se + child_no, arg); if (write) { logfs_set_alias(sb, logfs_block(page), child_no); BUG_ON((int)be32_to_cpu(se[child_no].valid) > super->s_segsize); } - kunmap_atomic(se, KM_USER0); + kunmap_atomic(se); logfs_put_write_page(page); } @@ -2106,14 +2123,14 @@ void logfs_set_segment_unreserved(struct super_block *sb, u32 segno, u32 ec) ec_level); } -int __logfs_write_inode(struct inode *inode, long flags) +int __logfs_write_inode(struct inode *inode, struct page *page, long flags) { struct super_block *sb = inode->i_sb; int ret; - logfs_get_wblocks(sb, NULL, flags & WF_LOCK); + logfs_get_wblocks(sb, page, flags & WF_LOCK); ret = do_write_inode(inode); - logfs_put_wblocks(sb, NULL, flags & WF_LOCK); + logfs_put_wblocks(sb, page, flags & WF_LOCK); return ret; } @@ -2228,10 +2245,10 @@ int logfs_inode_write(struct inode *inode, const void *buf, size_t count, if (!page) return -ENOMEM; - pagebuf = kmap_atomic(page, KM_USER0); + pagebuf = kmap_atomic(page); memcpy(pagebuf, buf, count); flush_dcache_page(page); - kunmap_atomic(pagebuf, KM_USER0); + kunmap_atomic(pagebuf); if (i_size_read(inode) < pos + LOGFS_BLOCKSIZE) i_size_write(inode, pos + LOGFS_BLOCKSIZE); diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c index 9d518735325..e28d090c98d 100644 --- a/fs/logfs/segment.c +++ b/fs/logfs/segment.c @@ -86,7 +86,11 @@ int __logfs_buf_write(struct logfs_area *area, u64 ofs, void *buf, size_t len, BUG_ON(!page); /* FIXME: reserve a pool */ SetPageUptodate(page); memcpy(page_address(page) + offset, buf, copylen); - SetPagePrivate(page); + + if (!PagePrivate(page)) { + SetPagePrivate(page); + page_cache_get(page); + } page_cache_release(page); buf += copylen; @@ -110,7 +114,10 @@ static void pad_partial_page(struct logfs_area *area) page = get_mapping_page(sb, index, 0); BUG_ON(!page); /* FIXME: reserve a pool */ memset(page_address(page) + offset, 0xff, len); - SetPagePrivate(page); + if (!PagePrivate(page)) { + SetPagePrivate(page); + page_cache_get(page); + } page_cache_release(page); } } @@ -130,7 +137,10 @@ static void pad_full_pages(struct logfs_area *area) BUG_ON(!page); /* FIXME: reserve a pool */ SetPageUptodate(page); memset(page_address(page), 0xff, PAGE_CACHE_SIZE); - SetPagePrivate(page); + if (!PagePrivate(page)) { + SetPagePrivate(page); + page_cache_get(page); + } page_cache_release(page); index++; no_indizes--; @@ -485,8 +495,12 @@ static void move_btree_to_page(struct inode *inode, struct page *page, mempool_free(item, super->s_alias_pool); } block->page = page; - SetPagePrivate(page); - page->private = (unsigned long)block; + + if (!PagePrivate(page)) { + SetPagePrivate(page); + page_cache_get(page); + set_page_private(page, (unsigned long) block); + } block->ops = &indirect_block_ops; initialize_block_counters(page, block, data, 0); } @@ -529,15 +543,19 @@ void move_page_to_btree(struct page *page) BUG_ON(!item); /* mempool empty */ memset(item, 0, sizeof(*item)); - child = kmap_atomic(page, KM_USER0); + child = kmap_atomic(page); item->val = child[pos]; - kunmap_atomic(child, KM_USER0); + kunmap_atomic(child); item->child_no = pos; list_add(&item->list, &block->item_list); } block->page = NULL; - ClearPagePrivate(page); - page->private = 0; + + if (PagePrivate(page)) { + ClearPagePrivate(page); + page_cache_release(page); + set_page_private(page, 0); + } block->ops = &btree_block_ops; err = alias_tree_insert(block->sb, block->ino, block->bix, block->level, block); @@ -702,7 +720,10 @@ void freeseg(struct super_block *sb, u32 segno) page = find_get_page(mapping, ofs >> PAGE_SHIFT); if (!page) continue; - ClearPagePrivate(page); + if (PagePrivate(page)) { + ClearPagePrivate(page); + page_cache_release(page); + } page_cache_release(page); } } @@ -841,6 +862,16 @@ static void free_area(struct logfs_area *area) kfree(area); } +void free_areas(struct super_block *sb) +{ + struct logfs_super *super = logfs_super(sb); + int i; + + for_each_area(i) + free_area(super->s_area[i]); + free_area(super->s_journal_area); +} + static struct logfs_area *alloc_area(struct super_block *sb) { struct logfs_area *area; @@ -923,10 +954,6 @@ err: void logfs_cleanup_areas(struct super_block *sb) { struct logfs_super *super = logfs_super(sb); - int i; btree_grim_visitor128(&super->s_object_alias_tree, 0, kill_alias); - for_each_area(i) - free_area(super->s_area[i]); - free_area(super->s_journal_area); } diff --git a/fs/logfs/super.c b/fs/logfs/super.c index e795c234ea3..97bca623d89 100644 --- a/fs/logfs/super.c +++ b/fs/logfs/super.c @@ -315,11 +315,9 @@ static int logfs_get_sb_final(struct super_block *sb) if (IS_ERR(rootdir)) goto fail; - sb->s_root = d_alloc_root(rootdir); - if (!sb->s_root) { - iput(rootdir); + sb->s_root = d_make_root(rootdir); + if (!sb->s_root) goto fail; - } /* at that point we know that ->put_super() will be called */ super->s_erase_page = alloc_pages(GFP_KERNEL, 0); @@ -486,14 +484,15 @@ static void logfs_kill_sb(struct super_block *sb) /* Alias entries slow down mount, so evict as many as possible */ sync_filesystem(sb); logfs_write_anchor(sb); + free_areas(sb); /* * From this point on alias entries are simply dropped - and any * writes to the object store are considered bugs. */ - super->s_flags |= LOGFS_SB_FLAG_SHUTDOWN; log_super("LogFS: Now in shutdown\n"); generic_shutdown_super(sb); + super->s_flags |= LOGFS_SB_FLAG_SHUTDOWN; BUG_ON(super->s_dirty_used_bytes || super->s_dirty_free_bytes); @@ -541,6 +540,7 @@ static struct dentry *logfs_get_sb_device(struct logfs_super *super, * the filesystem incompatible with 32bit systems. */ sb->s_maxbytes = (1ull << 43) - 1; + sb->s_max_links = LOGFS_LINK_MAX; sb->s_op = &logfs_super_operations; sb->s_flags = flags | MS_NOATIME; @@ -626,7 +626,10 @@ static int __init logfs_init(void) if (ret) goto out2; - return register_filesystem(&logfs_fs_type); + ret = register_filesystem(&logfs_fs_type); + if (!ret) + return 0; + logfs_destroy_inode_cache(); out2: logfs_compr_exit(); out1: diff --git a/fs/minix/dir.c b/fs/minix/dir.c index 085a9262c69..685b2d981b8 100644 --- a/fs/minix/dir.c +++ b/fs/minix/dir.c @@ -335,7 +335,7 @@ int minix_make_empty(struct inode *inode, struct inode *dir) goto fail; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr, 0, PAGE_CACHE_SIZE); if (sbi->s_version == MINIX_V3) { @@ -355,7 +355,7 @@ int minix_make_empty(struct inode *inode, struct inode *dir) de->inode = dir->i_ino; strcpy(de->name, ".."); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize); fail: diff --git a/fs/minix/inode.c b/fs/minix/inode.c index fa8b612b8ce..fcb05d2c6b5 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -190,24 +190,24 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) sbi->s_version = MINIX_V1; sbi->s_dirsize = 16; sbi->s_namelen = 14; - sbi->s_link_max = MINIX_LINK_MAX; + s->s_max_links = MINIX_LINK_MAX; } else if (s->s_magic == MINIX_SUPER_MAGIC2) { sbi->s_version = MINIX_V1; sbi->s_dirsize = 32; sbi->s_namelen = 30; - sbi->s_link_max = MINIX_LINK_MAX; + s->s_max_links = MINIX_LINK_MAX; } else if (s->s_magic == MINIX2_SUPER_MAGIC) { sbi->s_version = MINIX_V2; sbi->s_nzones = ms->s_zones; sbi->s_dirsize = 16; sbi->s_namelen = 14; - sbi->s_link_max = MINIX2_LINK_MAX; + s->s_max_links = MINIX2_LINK_MAX; } else if (s->s_magic == MINIX2_SUPER_MAGIC2) { sbi->s_version = MINIX_V2; sbi->s_nzones = ms->s_zones; sbi->s_dirsize = 32; sbi->s_namelen = 30; - sbi->s_link_max = MINIX2_LINK_MAX; + s->s_max_links = MINIX2_LINK_MAX; } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) { m3s = (struct minix3_super_block *) bh->b_data; s->s_magic = m3s->s_magic; @@ -221,9 +221,9 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) sbi->s_dirsize = 64; sbi->s_namelen = 60; sbi->s_version = MINIX_V3; - sbi->s_link_max = MINIX2_LINK_MAX; sbi->s_mount_state = MINIX_VALID_FS; sb_set_blocksize(s, m3s->s_blocksize); + s->s_max_links = MINIX2_LINK_MAX; } else goto out_no_fs; @@ -254,14 +254,6 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) minix_set_bit(0,sbi->s_imap[0]->b_data); minix_set_bit(0,sbi->s_zmap[0]->b_data); - /* set up enough so that it can read an inode */ - s->s_op = &minix_sops; - root_inode = minix_iget(s, MINIX_ROOT_INO); - if (IS_ERR(root_inode)) { - ret = PTR_ERR(root_inode); - goto out_no_root; - } - /* Apparently minix can create filesystems that allocate more blocks for * the bitmaps than needed. We simply ignore that, but verify it didn't * create one with not enough blocks and bail out if so. @@ -270,7 +262,7 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) if (sbi->s_imap_blocks < block) { printk("MINIX-fs: file system does not have enough " "imap blocks allocated. Refusing to mount\n"); - goto out_iput; + goto out_no_bitmap; } block = minix_blocks_needed( @@ -279,13 +271,21 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) if (sbi->s_zmap_blocks < block) { printk("MINIX-fs: file system does not have enough " "zmap blocks allocated. Refusing to mount.\n"); - goto out_iput; + goto out_no_bitmap; + } + + /* set up enough so that it can read an inode */ + s->s_op = &minix_sops; + root_inode = minix_iget(s, MINIX_ROOT_INO); + if (IS_ERR(root_inode)) { + ret = PTR_ERR(root_inode); + goto out_no_root; } ret = -ENOMEM; - s->s_root = d_alloc_root(root_inode); + s->s_root = d_make_root(root_inode); if (!s->s_root) - goto out_iput; + goto out_no_root; if (!(s->s_flags & MS_RDONLY)) { if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ @@ -301,10 +301,6 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) return 0; -out_iput: - iput(root_inode); - goto out_freemap; - out_no_root: if (!silent) printk("MINIX-fs: get root inode failed\n"); diff --git a/fs/minix/minix.h b/fs/minix/minix.h index c889ef0aa57..1ebd1185462 100644 --- a/fs/minix/minix.h +++ b/fs/minix/minix.h @@ -34,7 +34,6 @@ struct minix_sb_info { unsigned long s_max_size; int s_dirsize; int s_namelen; - int s_link_max; struct buffer_head ** s_imap; struct buffer_head ** s_zmap; struct buffer_head * s_sbh; diff --git a/fs/minix/namei.c b/fs/minix/namei.c index 2f76e38c206..2d0ee178630 100644 --- a/fs/minix/namei.c +++ b/fs/minix/namei.c @@ -94,9 +94,6 @@ static int minix_link(struct dentry * old_dentry, struct inode * dir, { struct inode *inode = old_dentry->d_inode; - if (inode->i_nlink >= minix_sb(inode->i_sb)->s_link_max) - return -EMLINK; - inode->i_ctime = CURRENT_TIME_SEC; inode_inc_link_count(inode); ihold(inode); @@ -106,10 +103,7 @@ static int minix_link(struct dentry * old_dentry, struct inode * dir, static int minix_mkdir(struct inode * dir, struct dentry *dentry, umode_t mode) { struct inode * inode; - int err = -EMLINK; - - if (dir->i_nlink >= minix_sb(dir->i_sb)->s_link_max) - goto out; + int err; inode_inc_link_count(dir); @@ -181,7 +175,6 @@ static int minix_rmdir(struct inode * dir, struct dentry *dentry) static int minix_rename(struct inode * old_dir, struct dentry *old_dentry, struct inode * new_dir, struct dentry *new_dentry) { - struct minix_sb_info * info = minix_sb(old_dir->i_sb); struct inode * old_inode = old_dentry->d_inode; struct inode * new_inode = new_dentry->d_inode; struct page * dir_page = NULL; @@ -219,11 +212,6 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry, drop_nlink(new_inode); inode_dec_link_count(new_inode); } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= info->s_link_max) - goto out_dir; - } err = minix_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/mpage.c b/fs/mpage.c index 643e9f55ef2..0face1c4d4c 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -13,7 +13,7 @@ */ #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/mm.h> #include <linux/kdev_t.h> #include <linux/gfp.h> diff --git a/fs/namei.c b/fs/namei.c index 208c6aa4a98..e615ff37e27 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -15,7 +15,7 @@ */ #include <linux/init.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/slab.h> #include <linux/fs.h> #include <linux/namei.h> @@ -161,7 +161,7 @@ static char *getname_flags(const char __user *filename, int flags, int *empty) char *getname(const char __user * filename) { - return getname_flags(filename, 0, 0); + return getname_flags(filename, 0, NULL); } #ifdef CONFIG_AUDITSYSCALL @@ -642,7 +642,7 @@ follow_link(struct path *link, struct nameidata *nd, void **p) cond_resched(); current->total_link_count++; - touch_atime(link->mnt, dentry); + touch_atime(link); nd_set_link(nd, NULL); error = security_inode_follow_link(link->dentry, nd); @@ -1095,8 +1095,10 @@ static struct dentry *d_inode_lookup(struct dentry *parent, struct dentry *dentr struct dentry *old; /* Don't create child dentry for a dead directory. */ - if (unlikely(IS_DEADDIR(inode))) + if (unlikely(IS_DEADDIR(inode))) { + dput(dentry); return ERR_PTR(-ENOENT); + } old = inode->i_op->lookup(inode, dentry, nd); if (unlikely(old)) { @@ -1373,6 +1375,157 @@ static inline int can_lookup(struct inode *inode) } /* + * We can do the critical dentry name comparison and hashing + * operations one word at a time, but we are limited to: + * + * - Architectures with fast unaligned word accesses. We could + * do a "get_unaligned()" if this helps and is sufficiently + * fast. + * + * - Little-endian machines (so that we can generate the mask + * of low bytes efficiently). Again, we *could* do a byte + * swapping load on big-endian architectures if that is not + * expensive enough to make the optimization worthless. + * + * - non-CONFIG_DEBUG_PAGEALLOC configurations (so that we + * do not trap on the (extremely unlikely) case of a page + * crossing operation. + * + * - Furthermore, we need an efficient 64-bit compile for the + * 64-bit case in order to generate the "number of bytes in + * the final mask". Again, that could be replaced with a + * efficient population count instruction or similar. + */ +#ifdef CONFIG_DCACHE_WORD_ACCESS + +#ifdef CONFIG_64BIT + +/* + * Jan Achrenius on G+: microoptimized version of + * the simpler "(mask & ONEBYTES) * ONEBYTES >> 56" + * that works for the bytemasks without having to + * mask them first. + */ +static inline long count_masked_bytes(unsigned long mask) +{ + return mask*0x0001020304050608ul >> 56; +} + +static inline unsigned int fold_hash(unsigned long hash) +{ + hash += hash >> (8*sizeof(int)); + return hash; +} + +#else /* 32-bit case */ + +/* Carl Chatfield / Jan Achrenius G+ version for 32-bit */ +static inline long count_masked_bytes(long mask) +{ + /* (000000 0000ff 00ffff ffffff) -> ( 1 1 2 3 ) */ + long a = (0x0ff0001+mask) >> 23; + /* Fix the 1 for 00 case */ + return a & mask; +} + +#define fold_hash(x) (x) + +#endif + +unsigned int full_name_hash(const unsigned char *name, unsigned int len) +{ + unsigned long a, mask; + unsigned long hash = 0; + + for (;;) { + a = *(unsigned long *)name; + if (len < sizeof(unsigned long)) + break; + hash += a; + hash *= 9; + name += sizeof(unsigned long); + len -= sizeof(unsigned long); + if (!len) + goto done; + } + mask = ~(~0ul << len*8); + hash += mask & a; +done: + return fold_hash(hash); +} +EXPORT_SYMBOL(full_name_hash); + +#define REPEAT_BYTE(x) ((~0ul / 0xff) * (x)) +#define ONEBYTES REPEAT_BYTE(0x01) +#define SLASHBYTES REPEAT_BYTE('/') +#define HIGHBITS REPEAT_BYTE(0x80) + +/* Return the high bit set in the first byte that is a zero */ +static inline unsigned long has_zero(unsigned long a) +{ + return ((a - ONEBYTES) & ~a) & HIGHBITS; +} + +/* + * Calculate the length and hash of the path component, and + * return the length of the component; + */ +static inline unsigned long hash_name(const char *name, unsigned int *hashp) +{ + unsigned long a, mask, hash, len; + + hash = a = 0; + len = -sizeof(unsigned long); + do { + hash = (hash + a) * 9; + len += sizeof(unsigned long); + a = *(unsigned long *)(name+len); + /* Do we have any NUL or '/' bytes in this word? */ + mask = has_zero(a) | has_zero(a ^ SLASHBYTES); + } while (!mask); + + /* The mask *below* the first high bit set */ + mask = (mask - 1) & ~mask; + mask >>= 7; + hash += a & mask; + *hashp = fold_hash(hash); + + return len + count_masked_bytes(mask); +} + +#else + +unsigned int full_name_hash(const unsigned char *name, unsigned int len) +{ + unsigned long hash = init_name_hash(); + while (len--) + hash = partial_name_hash(*name++, hash); + return end_name_hash(hash); +} +EXPORT_SYMBOL(full_name_hash); + +/* + * We know there's a real path component here of at least + * one character. + */ +static inline unsigned long hash_name(const char *name, unsigned int *hashp) +{ + unsigned long hash = init_name_hash(); + unsigned long len = 0, c; + + c = (unsigned char)*name; + do { + len++; + hash = partial_name_hash(c, hash); + c = (unsigned char)name[len]; + } while (c && c != '/'); + *hashp = end_name_hash(hash); + return len; +} + +#endif + +/* * Name resolution. * This is the basic name resolution function, turning a pathname into * the final dentry. We expect 'base' to be positive and a directory. @@ -1392,31 +1545,22 @@ static int link_path_walk(const char *name, struct nameidata *nd) /* At this point we know we have a real path component. */ for(;;) { - unsigned long hash; struct qstr this; - unsigned int c; + long len; int type; err = may_lookup(nd); if (err) break; + len = hash_name(name, &this.hash); this.name = name; - c = *(const unsigned char *)name; - - hash = init_name_hash(); - do { - name++; - hash = partial_name_hash(c, hash); - c = *(const unsigned char *)name; - } while (c && (c != '/')); - this.len = name - (const char *) this.name; - this.hash = end_name_hash(hash); + this.len = len; type = LAST_NORM; - if (this.name[0] == '.') switch (this.len) { + if (name[0] == '.') switch (len) { case 2: - if (this.name[1] == '.') { + if (name[1] == '.') { type = LAST_DOTDOT; nd->flags |= LOOKUP_JUMPED; } @@ -1435,12 +1579,18 @@ static int link_path_walk(const char *name, struct nameidata *nd) } } - /* remove trailing slashes? */ - if (!c) + if (!name[len]) goto last_component; - while (*++name == '/'); - if (!*name) + /* + * If it wasn't NUL, we know it was '/'. Skip that + * slash, and continue until no more slashes. + */ + do { + len++; + } while (unlikely(name[len] == '/')); + if (!name[len]) goto last_component; + name += len; err = walk_component(nd, &next, &this, type, LOOKUP_FOLLOW); if (err < 0) @@ -1773,24 +1923,21 @@ static struct dentry *lookup_hash(struct nameidata *nd) struct dentry *lookup_one_len(const char *name, struct dentry *base, int len) { struct qstr this; - unsigned long hash; unsigned int c; WARN_ON_ONCE(!mutex_is_locked(&base->d_inode->i_mutex)); this.name = name; this.len = len; + this.hash = full_name_hash(name, len); if (!len) return ERR_PTR(-EACCES); - hash = init_name_hash(); while (len--) { c = *(const unsigned char *)name++; if (c == '/' || c == '\0') return ERR_PTR(-EACCES); - hash = partial_name_hash(c, hash); } - this.hash = end_name_hash(hash); /* * See if the low-level filesystem might want * to use its own hash.. @@ -1825,7 +1972,7 @@ int user_path_at_empty(int dfd, const char __user *name, unsigned flags, int user_path_at(int dfd, const char __user *name, unsigned flags, struct path *path) { - return user_path_at_empty(dfd, name, flags, path, 0); + return user_path_at_empty(dfd, name, flags, path, NULL); } static int user_path_parent(int dfd, const char __user *path, @@ -2138,7 +2285,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path, /* sayonara */ error = complete_walk(nd); if (error) - return ERR_PTR(-ECHILD); + return ERR_PTR(error); error = -ENOTDIR; if (nd->flags & LOOKUP_DIRECTORY) { @@ -2237,7 +2384,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path, /* Why this, you ask? _Now_ we might have grown LOOKUP_JUMPED... */ error = complete_walk(nd); if (error) - goto exit; + return ERR_PTR(error); error = -EISDIR; if (S_ISDIR(nd->inode->i_mode)) goto exit; @@ -2545,6 +2692,7 @@ SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, d int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { int error = may_create(dir, dentry); + unsigned max_links = dir->i_sb->s_max_links; if (error) return error; @@ -2557,6 +2705,9 @@ int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) if (error) return error; + if (max_links && dir->i_nlink >= max_links) + return -EMLINK; + error = dir->i_op->mkdir(dir, dentry, mode); if (!error) fsnotify_mkdir(dir, dentry); @@ -2887,6 +3038,7 @@ SYSCALL_DEFINE2(symlink, const char __user *, oldname, const char __user *, newn int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) { struct inode *inode = old_dentry->d_inode; + unsigned max_links = dir->i_sb->s_max_links; int error; if (!inode) @@ -2917,6 +3069,8 @@ int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de /* Make sure we don't allow creating hardlink to an unlinked file */ if (inode->i_nlink == 0) error = -ENOENT; + else if (max_links && inode->i_nlink >= max_links) + error = -EMLINK; else error = dir->i_op->link(old_dentry, dir, new_dentry); mutex_unlock(&inode->i_mutex); @@ -3026,6 +3180,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry, { int error = 0; struct inode *target = new_dentry->d_inode; + unsigned max_links = new_dir->i_sb->s_max_links; /* * If we are going to change the parent - check write permissions, @@ -3049,6 +3204,11 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry, if (d_mountpoint(old_dentry) || d_mountpoint(new_dentry)) goto out; + error = -EMLINK; + if (max_links && !target && new_dir != old_dir && + new_dir->i_nlink >= max_links) + goto out; + if (target) shrink_dcache_parent(new_dentry); error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry); @@ -3347,9 +3507,9 @@ retry: if (err) goto fail; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(kaddr, symname, len-1); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); err = pagecache_write_end(NULL, mapping, 0, len-1, len-1, page, fsdata); diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index 3d1e34f8a68..49df0e7f837 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -716,13 +716,11 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) if (!root_inode) goto out_disconnect; DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber); - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) - goto out_no_root; + goto out_disconnect; return 0; -out_no_root: - iput(root_inode); out_disconnect: ncp_lock_server(server); ncp_disconnect(server); diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index dbcd82126ae..2a0e6c59914 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -64,6 +64,7 @@ config NFS_V4 bool "NFS client support for NFS version 4" depends on NFS_FS select SUNRPC_GSS + select KEYS help This option enables support for version 4 of the NFS protocol (RFC 3530) in the kernel's NFS client. @@ -98,6 +99,18 @@ config PNFS_OBJLAYOUT depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD default m +config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN + string "NFSv4.1 Implementation ID Domain" + depends on NFS_V4_1 + default "kernel.org" + help + This option defines the domain portion of the implementation ID that + may be sent in the NFS exchange_id operation. The value must be in + the format of a DNS domain name and should be set to the DNS domain + name of the distribution. + If the NFS client is unchanged from the upstream kernel, this + option should be set to the default "kernel.org". + config ROOT_NFS bool "Root file system on NFS" depends on NFS_FS=y && IP_PNP @@ -130,16 +143,10 @@ config NFS_USE_KERNEL_DNS bool depends on NFS_V4 && !NFS_USE_LEGACY_DNS select DNS_RESOLVER - select KEYS default y -config NFS_USE_NEW_IDMAPPER - bool "Use the new idmapper upcall routine" - depends on NFS_V4 && KEYS - help - Say Y here if you want NFS to use the new idmapper upcall functions. - You will need /sbin/request-key (usually provided by the keyutils - package). For details, read - <file:Documentation/filesystems/nfs/idmapper.txt>. - - If you are unsure, say N. +config NFS_DEBUG + bool + depends on NFS_FS && SUNRPC_DEBUG + select CRC32 + default y diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 48cfac31f64..9c94297bb70 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -46,9 +46,6 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Andy Adamson <andros@citi.umich.edu>"); MODULE_DESCRIPTION("The NFSv4.1 pNFS Block layout driver"); -struct dentry *bl_device_pipe; -wait_queue_head_t bl_wq; - static void print_page(struct page *page) { dprintk("PRINTPAGE page %p\n", page); @@ -236,12 +233,11 @@ bl_read_pagelist(struct nfs_read_data *rdata) sector_t isect, extent_length = 0; struct parallel_io *par; loff_t f_offset = rdata->args.offset; - size_t count = rdata->args.count; struct page **pages = rdata->args.pages; int pg_index = rdata->args.pgbase >> PAGE_CACHE_SHIFT; - dprintk("%s enter nr_pages %u offset %lld count %Zd\n", __func__, - rdata->npages, f_offset, count); + dprintk("%s enter nr_pages %u offset %lld count %u\n", __func__, + rdata->npages, f_offset, (unsigned int)rdata->args.count); par = alloc_parallel(rdata); if (!par) @@ -1025,10 +1021,128 @@ static const struct rpc_pipe_ops bl_upcall_ops = { .destroy_msg = bl_pipe_destroy_msg, }; +static struct dentry *nfs4blocklayout_register_sb(struct super_block *sb, + struct rpc_pipe *pipe) +{ + struct dentry *dir, *dentry; + + dir = rpc_d_lookup_sb(sb, NFS_PIPE_DIRNAME); + if (dir == NULL) + return ERR_PTR(-ENOENT); + dentry = rpc_mkpipe_dentry(dir, "blocklayout", NULL, pipe); + dput(dir); + return dentry; +} + +static void nfs4blocklayout_unregister_sb(struct super_block *sb, + struct rpc_pipe *pipe) +{ + if (pipe->dentry) + rpc_unlink(pipe->dentry); +} + +static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, + void *ptr) +{ + struct super_block *sb = ptr; + struct net *net = sb->s_fs_info; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct dentry *dentry; + int ret = 0; + + if (!try_module_get(THIS_MODULE)) + return 0; + + if (nn->bl_device_pipe == NULL) { + module_put(THIS_MODULE); + return 0; + } + + switch (event) { + case RPC_PIPEFS_MOUNT: + dentry = nfs4blocklayout_register_sb(sb, nn->bl_device_pipe); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + break; + } + nn->bl_device_pipe->dentry = dentry; + break; + case RPC_PIPEFS_UMOUNT: + if (nn->bl_device_pipe->dentry) + nfs4blocklayout_unregister_sb(sb, nn->bl_device_pipe); + break; + default: + ret = -ENOTSUPP; + break; + } + module_put(THIS_MODULE); + return ret; +} + +static struct notifier_block nfs4blocklayout_block = { + .notifier_call = rpc_pipefs_event, +}; + +static struct dentry *nfs4blocklayout_register_net(struct net *net, + struct rpc_pipe *pipe) +{ + struct super_block *pipefs_sb; + struct dentry *dentry; + + pipefs_sb = rpc_get_sb_net(net); + if (!pipefs_sb) + return NULL; + dentry = nfs4blocklayout_register_sb(pipefs_sb, pipe); + rpc_put_sb_net(net); + return dentry; +} + +static void nfs4blocklayout_unregister_net(struct net *net, + struct rpc_pipe *pipe) +{ + struct super_block *pipefs_sb; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + nfs4blocklayout_unregister_sb(pipefs_sb, pipe); + rpc_put_sb_net(net); + } +} + +static int nfs4blocklayout_net_init(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct dentry *dentry; + + init_waitqueue_head(&nn->bl_wq); + nn->bl_device_pipe = rpc_mkpipe_data(&bl_upcall_ops, 0); + if (IS_ERR(nn->bl_device_pipe)) + return PTR_ERR(nn->bl_device_pipe); + dentry = nfs4blocklayout_register_net(net, nn->bl_device_pipe); + if (IS_ERR(dentry)) { + rpc_destroy_pipe_data(nn->bl_device_pipe); + return PTR_ERR(dentry); + } + nn->bl_device_pipe->dentry = dentry; + return 0; +} + +static void nfs4blocklayout_net_exit(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + + nfs4blocklayout_unregister_net(net, nn->bl_device_pipe); + rpc_destroy_pipe_data(nn->bl_device_pipe); + nn->bl_device_pipe = NULL; +} + +static struct pernet_operations nfs4blocklayout_net_ops = { + .init = nfs4blocklayout_net_init, + .exit = nfs4blocklayout_net_exit, +}; + static int __init nfs4blocklayout_init(void) { - struct vfsmount *mnt; - struct path path; int ret; dprintk("%s: NFSv4 Block Layout Driver Registering...\n", __func__); @@ -1037,32 +1151,17 @@ static int __init nfs4blocklayout_init(void) if (ret) goto out; - init_waitqueue_head(&bl_wq); - - mnt = rpc_get_mount(); - if (IS_ERR(mnt)) { - ret = PTR_ERR(mnt); + ret = rpc_pipefs_notifier_register(&nfs4blocklayout_block); + if (ret) goto out_remove; - } - - ret = vfs_path_lookup(mnt->mnt_root, - mnt, - NFS_PIPE_DIRNAME, 0, &path); + ret = register_pernet_subsys(&nfs4blocklayout_net_ops); if (ret) - goto out_putrpc; - - bl_device_pipe = rpc_mkpipe(path.dentry, "blocklayout", NULL, - &bl_upcall_ops, 0); - path_put(&path); - if (IS_ERR(bl_device_pipe)) { - ret = PTR_ERR(bl_device_pipe); - goto out_putrpc; - } + goto out_notifier; out: return ret; -out_putrpc: - rpc_put_mount(); +out_notifier: + rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); out_remove: pnfs_unregister_layoutdriver(&blocklayout_type); return ret; @@ -1073,9 +1172,9 @@ static void __exit nfs4blocklayout_exit(void) dprintk("%s: NFSv4 Block Layout Driver Unregistering...\n", __func__); + rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); + unregister_pernet_subsys(&nfs4blocklayout_net_ops); pnfs_unregister_layoutdriver(&blocklayout_type); - rpc_unlink(bl_device_pipe); - rpc_put_mount(); } MODULE_ALIAS("nfs-layouttype4-3"); diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h index e31a2df28e7..03350690118 100644 --- a/fs/nfs/blocklayout/blocklayout.h +++ b/fs/nfs/blocklayout/blocklayout.h @@ -37,6 +37,7 @@ #include <linux/sunrpc/rpc_pipe_fs.h> #include "../pnfs.h" +#include "../netns.h" #define PAGE_CACHE_SECTORS (PAGE_CACHE_SIZE >> SECTOR_SHIFT) #define PAGE_CACHE_SECTOR_SHIFT (PAGE_CACHE_SHIFT - SECTOR_SHIFT) @@ -50,6 +51,7 @@ struct pnfs_block_dev { struct list_head bm_node; struct nfs4_deviceid bm_mdevid; /* associated devid */ struct block_device *bm_mdev; /* meta device itself */ + struct net *net; }; enum exstate4 { @@ -151,9 +153,9 @@ BLK_LSEG2EXT(struct pnfs_layout_segment *lseg) return BLK_LO2EXT(lseg->pls_layout); } -struct bl_dev_msg { - int32_t status; - uint32_t major, minor; +struct bl_pipe_msg { + struct rpc_pipe_msg msg; + wait_queue_head_t *bl_wq; }; struct bl_msg_hdr { @@ -161,9 +163,6 @@ struct bl_msg_hdr { u16 totallen; /* length of entire message, including hdr itself */ }; -extern struct dentry *bl_device_pipe; -extern wait_queue_head_t bl_wq; - #define BL_DEVICE_UMOUNT 0x0 /* Umount--delete devices */ #define BL_DEVICE_MOUNT 0x1 /* Mount--create devices*/ #define BL_DEVICE_REQUEST_INIT 0x0 /* Start request */ diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c index d08ba9107fd..a5c88a554d9 100644 --- a/fs/nfs/blocklayout/blocklayoutdev.c +++ b/fs/nfs/blocklayout/blocklayoutdev.c @@ -46,7 +46,7 @@ static int decode_sector_number(__be32 **rp, sector_t *sp) *rp = xdr_decode_hyper(*rp, &s); if (s & 0x1ff) { - printk(KERN_WARNING "%s: sector not aligned\n", __func__); + printk(KERN_WARNING "NFS: %s: sector not aligned\n", __func__); return -1; } *sp = s >> SECTOR_SHIFT; @@ -79,27 +79,30 @@ int nfs4_blkdev_put(struct block_device *bdev) return blkdev_put(bdev, FMODE_READ); } -static struct bl_dev_msg bl_mount_reply; - ssize_t bl_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) { + struct nfs_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info, + nfs_net_id); + if (mlen != sizeof (struct bl_dev_msg)) return -EINVAL; - if (copy_from_user(&bl_mount_reply, src, mlen) != 0) + if (copy_from_user(&nn->bl_mount_reply, src, mlen) != 0) return -EFAULT; - wake_up(&bl_wq); + wake_up(&nn->bl_wq); return mlen; } void bl_pipe_destroy_msg(struct rpc_pipe_msg *msg) { + struct bl_pipe_msg *bl_pipe_msg = container_of(msg, struct bl_pipe_msg, msg); + if (msg->errno >= 0) return; - wake_up(&bl_wq); + wake_up(bl_pipe_msg->bl_wq); } /* @@ -111,29 +114,33 @@ nfs4_blk_decode_device(struct nfs_server *server, { struct pnfs_block_dev *rv; struct block_device *bd = NULL; - struct rpc_pipe_msg msg; + struct bl_pipe_msg bl_pipe_msg; + struct rpc_pipe_msg *msg = &bl_pipe_msg.msg; struct bl_msg_hdr bl_msg = { .type = BL_DEVICE_MOUNT, .totallen = dev->mincount, }; uint8_t *dataptr; DECLARE_WAITQUEUE(wq, current); - struct bl_dev_msg *reply = &bl_mount_reply; int offset, len, i, rc; + struct net *net = server->nfs_client->net; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct bl_dev_msg *reply = &nn->bl_mount_reply; dprintk("%s CREATING PIPEFS MESSAGE\n", __func__); dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data, dev->mincount); - memset(&msg, 0, sizeof(msg)); - msg.data = kzalloc(sizeof(bl_msg) + dev->mincount, GFP_NOFS); - if (!msg.data) { + bl_pipe_msg.bl_wq = &nn->bl_wq; + memset(msg, 0, sizeof(*msg)); + msg->data = kzalloc(sizeof(bl_msg) + dev->mincount, GFP_NOFS); + if (!msg->data) { rv = ERR_PTR(-ENOMEM); goto out; } - memcpy(msg.data, &bl_msg, sizeof(bl_msg)); - dataptr = (uint8_t *) msg.data; + memcpy(msg->data, &bl_msg, sizeof(bl_msg)); + dataptr = (uint8_t *) msg->data; len = dev->mincount; offset = sizeof(bl_msg); for (i = 0; len > 0; i++) { @@ -142,13 +149,13 @@ nfs4_blk_decode_device(struct nfs_server *server, len -= PAGE_CACHE_SIZE; offset += PAGE_CACHE_SIZE; } - msg.len = sizeof(bl_msg) + dev->mincount; + msg->len = sizeof(bl_msg) + dev->mincount; dprintk("%s CALLING USERSPACE DAEMON\n", __func__); - add_wait_queue(&bl_wq, &wq); - rc = rpc_queue_upcall(bl_device_pipe->d_inode, &msg); + add_wait_queue(&nn->bl_wq, &wq); + rc = rpc_queue_upcall(nn->bl_device_pipe, msg); if (rc < 0) { - remove_wait_queue(&bl_wq, &wq); + remove_wait_queue(&nn->bl_wq, &wq); rv = ERR_PTR(rc); goto out; } @@ -156,7 +163,7 @@ nfs4_blk_decode_device(struct nfs_server *server, set_current_state(TASK_UNINTERRUPTIBLE); schedule(); __set_current_state(TASK_RUNNING); - remove_wait_queue(&bl_wq, &wq); + remove_wait_queue(&nn->bl_wq, &wq); if (reply->status != BL_DEVICE_REQUEST_PROC) { dprintk("%s failed to open device: %d\n", @@ -181,13 +188,14 @@ nfs4_blk_decode_device(struct nfs_server *server, rv->bm_mdev = bd; memcpy(&rv->bm_mdevid, &dev->dev_id, sizeof(struct nfs4_deviceid)); + rv->net = net; dprintk("%s Created device %s with bd_block_size %u\n", __func__, bd->bd_disk->disk_name, bd->bd_block_size); out: - kfree(msg.data); + kfree(msg->data); return rv; } diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c index d055c755807..737d839bc17 100644 --- a/fs/nfs/blocklayout/blocklayoutdm.c +++ b/fs/nfs/blocklayout/blocklayoutdm.c @@ -38,9 +38,10 @@ #define NFSDBG_FACILITY NFSDBG_PNFS_LD -static void dev_remove(dev_t dev) +static void dev_remove(struct net *net, dev_t dev) { - struct rpc_pipe_msg msg; + struct bl_pipe_msg bl_pipe_msg; + struct rpc_pipe_msg *msg = &bl_pipe_msg.msg; struct bl_dev_msg bl_umount_request; struct bl_msg_hdr bl_msg = { .type = BL_DEVICE_UMOUNT, @@ -48,36 +49,38 @@ static void dev_remove(dev_t dev) }; uint8_t *dataptr; DECLARE_WAITQUEUE(wq, current); + struct nfs_net *nn = net_generic(net, nfs_net_id); dprintk("Entering %s\n", __func__); - memset(&msg, 0, sizeof(msg)); - msg.data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS); - if (!msg.data) + bl_pipe_msg.bl_wq = &nn->bl_wq; + memset(msg, 0, sizeof(*msg)); + msg->data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS); + if (!msg->data) goto out; memset(&bl_umount_request, 0, sizeof(bl_umount_request)); bl_umount_request.major = MAJOR(dev); bl_umount_request.minor = MINOR(dev); - memcpy(msg.data, &bl_msg, sizeof(bl_msg)); - dataptr = (uint8_t *) msg.data; + memcpy(msg->data, &bl_msg, sizeof(bl_msg)); + dataptr = (uint8_t *) msg->data; memcpy(&dataptr[sizeof(bl_msg)], &bl_umount_request, sizeof(bl_umount_request)); - msg.len = sizeof(bl_msg) + bl_msg.totallen; + msg->len = sizeof(bl_msg) + bl_msg.totallen; - add_wait_queue(&bl_wq, &wq); - if (rpc_queue_upcall(bl_device_pipe->d_inode, &msg) < 0) { - remove_wait_queue(&bl_wq, &wq); + add_wait_queue(&nn->bl_wq, &wq); + if (rpc_queue_upcall(nn->bl_device_pipe, msg) < 0) { + remove_wait_queue(&nn->bl_wq, &wq); goto out; } set_current_state(TASK_UNINTERRUPTIBLE); schedule(); __set_current_state(TASK_RUNNING); - remove_wait_queue(&bl_wq, &wq); + remove_wait_queue(&nn->bl_wq, &wq); out: - kfree(msg.data); + kfree(msg->data); } /* @@ -90,10 +93,10 @@ static void nfs4_blk_metadev_release(struct pnfs_block_dev *bdev) dprintk("%s Releasing\n", __func__); rv = nfs4_blkdev_put(bdev->bm_mdev); if (rv) - printk(KERN_ERR "%s nfs4_blkdev_put returns %d\n", + printk(KERN_ERR "NFS: %s nfs4_blkdev_put returns %d\n", __func__, rv); - dev_remove(bdev->bm_mdev->bd_dev); + dev_remove(bdev->net, bdev->bm_mdev->bd_dev); } void bl_free_block_dev(struct pnfs_block_dev *bdev) diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c index 1abac09f7cd..1f9a6032796 100644 --- a/fs/nfs/blocklayout/extents.c +++ b/fs/nfs/blocklayout/extents.c @@ -147,7 +147,7 @@ static int _preload_range(struct pnfs_inval_markings *marks, count = (int)(end - start) / (int)tree->mtt_step_size; /* Pre-malloc what memory we might need */ - storage = kmalloc(sizeof(*storage) * count, GFP_NOFS); + storage = kcalloc(count, sizeof(*storage), GFP_NOFS); if (!storage) return -ENOMEM; for (i = 0; i < count; i++) { diff --git a/fs/nfs/cache_lib.c b/fs/nfs/cache_lib.c index c98b439332f..dded2636811 100644 --- a/fs/nfs/cache_lib.c +++ b/fs/nfs/cache_lib.c @@ -13,6 +13,7 @@ #include <linux/slab.h> #include <linux/sunrpc/cache.h> #include <linux/sunrpc/rpc_pipe_fs.h> +#include <net/net_namespace.h> #include "cache_lib.h" @@ -111,30 +112,54 @@ int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq) return 0; } -int nfs_cache_register(struct cache_detail *cd) +int nfs_cache_register_sb(struct super_block *sb, struct cache_detail *cd) { - struct vfsmount *mnt; - struct path path; int ret; + struct dentry *dir; - mnt = rpc_get_mount(); - if (IS_ERR(mnt)) - return PTR_ERR(mnt); - ret = vfs_path_lookup(mnt->mnt_root, mnt, "/cache", 0, &path); - if (ret) - goto err; - ret = sunrpc_cache_register_pipefs(path.dentry, cd->name, 0600, cd); - path_put(&path); - if (!ret) - return ret; -err: - rpc_put_mount(); + dir = rpc_d_lookup_sb(sb, "cache"); + BUG_ON(dir == NULL); + ret = sunrpc_cache_register_pipefs(dir, cd->name, 0600, cd); + dput(dir); return ret; } -void nfs_cache_unregister(struct cache_detail *cd) +int nfs_cache_register_net(struct net *net, struct cache_detail *cd) { - sunrpc_cache_unregister_pipefs(cd); - rpc_put_mount(); + struct super_block *pipefs_sb; + int ret = 0; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + ret = nfs_cache_register_sb(pipefs_sb, cd); + rpc_put_sb_net(net); + } + return ret; +} + +void nfs_cache_unregister_sb(struct super_block *sb, struct cache_detail *cd) +{ + if (cd->u.pipefs.dir) + sunrpc_cache_unregister_pipefs(cd); +} + +void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd) +{ + struct super_block *pipefs_sb; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + nfs_cache_unregister_sb(pipefs_sb, cd); + rpc_put_sb_net(net); + } +} + +void nfs_cache_init(struct cache_detail *cd) +{ + sunrpc_init_cache_detail(cd); } +void nfs_cache_destroy(struct cache_detail *cd) +{ + sunrpc_destroy_cache_detail(cd); +} diff --git a/fs/nfs/cache_lib.h b/fs/nfs/cache_lib.h index 7cf6cafcc00..317db95e37f 100644 --- a/fs/nfs/cache_lib.h +++ b/fs/nfs/cache_lib.h @@ -23,5 +23,11 @@ extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void); extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq); extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq); -extern int nfs_cache_register(struct cache_detail *cd); -extern void nfs_cache_unregister(struct cache_detail *cd); +extern void nfs_cache_init(struct cache_detail *cd); +extern void nfs_cache_destroy(struct cache_detail *cd); +extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd); +extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd); +extern int nfs_cache_register_sb(struct super_block *sb, + struct cache_detail *cd); +extern void nfs_cache_unregister_sb(struct super_block *sb, + struct cache_detail *cd); diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 516f3375e06..eb95f5091c1 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -85,7 +85,7 @@ nfs4_callback_svc(void *vrqstp) } if (err < 0) { if (err != preverr) { - printk(KERN_WARNING "%s: unexpected error " + printk(KERN_WARNING "NFS: %s: unexpected error " "from svc_recv (%d)\n", __func__, err); preverr = err; } @@ -101,12 +101,12 @@ nfs4_callback_svc(void *vrqstp) /* * Prepare to bring up the NFSv4 callback service */ -struct svc_rqst * -nfs4_callback_up(struct svc_serv *serv) +static struct svc_rqst * +nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { int ret; - ret = svc_create_xprt(serv, "tcp", &init_net, PF_INET, + ret = svc_create_xprt(serv, "tcp", xprt->xprt_net, PF_INET, nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS); if (ret <= 0) goto out_err; @@ -114,7 +114,7 @@ nfs4_callback_up(struct svc_serv *serv) dprintk("NFS: Callback listener port = %u (af %u)\n", nfs_callback_tcpport, PF_INET); - ret = svc_create_xprt(serv, "tcp", &init_net, PF_INET6, + ret = svc_create_xprt(serv, "tcp", xprt->xprt_net, PF_INET6, nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS); if (ret > 0) { nfs_callback_tcpport6 = ret; @@ -172,7 +172,7 @@ nfs41_callback_svc(void *vrqstp) /* * Bring up the NFSv4.1 callback service */ -struct svc_rqst * +static struct svc_rqst * nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) { struct svc_rqst *rqstp; @@ -183,7 +183,7 @@ nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt) * fore channel connection. * Returns the input port (0) and sets the svc_serv bc_xprt on success */ - ret = svc_create_xprt(serv, "tcp-bc", &init_net, PF_INET, 0, + ret = svc_create_xprt(serv, "tcp-bc", xprt->xprt_net, PF_INET, 0, SVC_SOCK_ANONYMOUS); if (ret < 0) { rqstp = ERR_PTR(ret); @@ -269,7 +269,7 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt) serv, xprt, &rqstp, &callback_svc); if (!minorversion_setup) { /* v4.0 callback setup */ - rqstp = nfs4_callback_up(serv); + rqstp = nfs4_callback_up(serv, xprt); callback_svc = nfs4_callback_svc; } @@ -332,7 +332,6 @@ void nfs_callback_down(int minorversion) int check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) { - struct rpc_clnt *r = clp->cl_rpcclient; char *p = svc_gss_principal(rqstp); if (rqstp->rq_authop->flavour != RPC_AUTH_GSS) @@ -353,7 +352,7 @@ check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) if (memcmp(p, "nfs@", 4) != 0) return 0; p += 4; - if (strcmp(p, r->cl_server) != 0) + if (strcmp(p, clp->cl_hostname) != 0) return 0; return 1; } diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index c89d3b9e483..a5527c90a5a 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -38,7 +38,8 @@ enum nfs4_callback_opnum { struct cb_process_state { __be32 drc_status; struct nfs_client *clp; - int slotid; + u32 slotid; + struct net *net; }; struct cb_compound_hdr_arg { diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 54cea8ad5a7..1b5d809a105 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -8,6 +8,7 @@ #include <linux/nfs4.h> #include <linux/nfs_fs.h> #include <linux/slab.h> +#include <linux/rcupdate.h> #include "nfs4_fs.h" #include "callback.h" #include "delegation.h" @@ -33,7 +34,7 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, res->bitmap[0] = res->bitmap[1] = 0; res->status = htonl(NFS4ERR_BADHANDLE); - dprintk("NFS: GETATTR callback request from %s\n", + dprintk_rcu("NFS: GETATTR callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); inode = nfs_delegation_find_inode(cps->clp, &args->fh); @@ -73,7 +74,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ goto out; - dprintk("NFS: RECALL callback request from %s\n", + dprintk_rcu("NFS: RECALL callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); res = htonl(NFS4ERR_BADHANDLE); @@ -86,8 +87,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, res = 0; break; case -ENOENT: - if (res != 0) - res = htonl(NFS4ERR_BAD_STATEID); + res = htonl(NFS4ERR_BAD_STATEID); break; default: res = htonl(NFS4ERR_RESOURCE); @@ -98,52 +98,64 @@ out: return res; } -int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) -{ - if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data, - sizeof(delegation->stateid.data)) != 0) - return 0; - return 1; -} - #if defined(CONFIG_NFS_V4_1) -static u32 initiate_file_draining(struct nfs_client *clp, - struct cb_layoutrecallargs *args) +/* + * Lookup a layout by filehandle. + * + * Note: gets a refcount on the layout hdr and on its respective inode. + * Caller must put the layout hdr and the inode. + * + * TODO: keep track of all layouts (and delegations) in a hash table + * hashed by filehandle. + */ +static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh) { struct nfs_server *server; - struct pnfs_layout_hdr *lo; struct inode *ino; - bool found = false; - u32 rv = NFS4ERR_NOMATCHING_LAYOUT; - LIST_HEAD(free_me_list); + struct pnfs_layout_hdr *lo; - spin_lock(&clp->cl_lock); - rcu_read_lock(); list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { list_for_each_entry(lo, &server->layouts, plh_layouts) { - if (nfs_compare_fh(&args->cbl_fh, - &NFS_I(lo->plh_inode)->fh)) + if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) continue; ino = igrab(lo->plh_inode); if (!ino) continue; - found = true; - /* Without this, layout can be freed as soon - * as we release cl_lock. - */ get_layout_hdr(lo); - break; + return lo; } - if (found) - break; } + + return NULL; +} + +static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh) +{ + struct pnfs_layout_hdr *lo; + + spin_lock(&clp->cl_lock); + rcu_read_lock(); + lo = get_layout_by_fh_locked(clp, fh); rcu_read_unlock(); spin_unlock(&clp->cl_lock); - if (!found) + return lo; +} + +static u32 initiate_file_draining(struct nfs_client *clp, + struct cb_layoutrecallargs *args) +{ + struct inode *ino; + struct pnfs_layout_hdr *lo; + u32 rv = NFS4ERR_NOMATCHING_LAYOUT; + LIST_HEAD(free_me_list); + + lo = get_layout_by_fh(clp, &args->cbl_fh); + if (!lo) return NFS4ERR_NOMATCHING_LAYOUT; + ino = lo->plh_inode; spin_lock(&ino->i_lock); if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || mark_matching_lsegs_invalid(lo, &free_me_list, @@ -213,17 +225,13 @@ static u32 initiate_bulk_draining(struct nfs_client *clp, static u32 do_callback_layoutrecall(struct nfs_client *clp, struct cb_layoutrecallargs *args) { - u32 res = NFS4ERR_DELAY; + u32 res; dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); - if (test_and_set_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state)) - goto out; if (args->cbl_recall_type == RETURN_FILE) res = initiate_file_draining(clp, args); else res = initiate_bulk_draining(clp, args); - clear_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state); -out: dprintk("%s returning %i\n", __func__, res); return res; @@ -303,21 +311,6 @@ out: return res; } -int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) -{ - if (delegation == NULL) - return 0; - - if (stateid->stateid.seqid != 0) - return 0; - if (memcmp(&delegation->stateid.stateid.other, - &stateid->stateid.other, - NFS4_STATEID_OTHER_SIZE)) - return 0; - - return 1; -} - /* * Validate the sequenceID sent by the server. * Return success if the sequenceID is one more than what we last saw on @@ -441,7 +434,7 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, int i; __be32 status = htonl(NFS4ERR_BADSESSION); - clp = nfs4_find_client_sessionid(args->csa_addr, &args->csa_sessionid); + clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, &args->csa_sessionid); if (clp == NULL) goto out; @@ -517,7 +510,7 @@ __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: RECALL_ANY callback request from %s\n", + dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); status = cpu_to_be32(NFS4ERR_INVAL); @@ -552,7 +545,7 @@ __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, if (!cps->clp) /* set in cb_sequence */ goto out; - dprintk("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", + dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target max slots %d\n", rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), args->crsa_target_max_slots); diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index d50b2742f23..95bfc243992 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -9,6 +9,8 @@ #include <linux/sunrpc/svc.h> #include <linux/nfs4.h> #include <linux/nfs_fs.h> +#include <linux/ratelimit.h> +#include <linux/printk.h> #include <linux/slab.h> #include <linux/sunrpc/bc_xprt.h> #include "nfs4_fs.h" @@ -73,7 +75,7 @@ static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) p = xdr_inline_decode(xdr, nbytes); if (unlikely(p == NULL)) - printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n"); + printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); return p; } @@ -138,10 +140,10 @@ static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { __be32 *p; - p = read_buf(xdr, 16); + p = read_buf(xdr, NFS4_STATEID_SIZE); if (unlikely(p == NULL)) return htonl(NFS4ERR_RESOURCE); - memcpy(stateid->data, p, 16); + memcpy(stateid, p, NFS4_STATEID_SIZE); return 0; } @@ -155,7 +157,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound return status; /* We do not like overly long tags! */ if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { - printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", + printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", __func__, hdr->taglen); return htonl(NFS4ERR_RESOURCE); } @@ -167,7 +169,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound if (hdr->minorversion <= 1) { hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ } else { - printk(KERN_WARNING "%s: NFSv4 server callback with " + pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " "illegal minor version %u!\n", __func__, hdr->minorversion); return htonl(NFS4ERR_MINOR_VERS_MISMATCH); @@ -759,14 +761,14 @@ static void nfs4_callback_free_slot(struct nfs4_session *session) * Let the state manager know callback processing done. * A single slot, so highest used slotid is either 0 or -1 */ - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; nfs4_check_drain_bc_complete(session); spin_unlock(&tbl->slot_tbl_lock); } static void nfs4_cb_free_slot(struct cb_process_state *cps) { - if (cps->slotid != -1) + if (cps->slotid != NFS4_NO_SLOT) nfs4_callback_free_slot(cps->clp->cl_session); } @@ -860,7 +862,8 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r struct cb_process_state cps = { .drc_status = 0, .clp = NULL, - .slotid = -1, + .slotid = NFS4_NO_SLOT, + .net = rqstp->rq_xprt->xpt_net, }; unsigned int nops = 0; @@ -876,7 +879,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r return rpc_garbage_args; if (hdr_arg.minorversion == 0) { - cps.clp = nfs4_find_client_ident(hdr_arg.cb_ident); + cps.clp = nfs4_find_client_ident(rqstp->rq_xprt->xpt_net, hdr_arg.cb_ident); if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) return rpc_drop_reply; } diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 31778f74357..4a108a0a2a6 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -36,9 +36,12 @@ #include <linux/inet.h> #include <linux/in6.h> #include <linux/slab.h> +#include <linux/idr.h> #include <net/ipv6.h> #include <linux/nfs_xdr.h> #include <linux/sunrpc/bc_xprt.h> +#include <linux/nsproxy.h> +#include <linux/pid_namespace.h> #include <asm/system.h> @@ -49,15 +52,12 @@ #include "internal.h" #include "fscache.h" #include "pnfs.h" +#include "netns.h" #define NFSDBG_FACILITY NFSDBG_CLIENT -static DEFINE_SPINLOCK(nfs_client_lock); -static LIST_HEAD(nfs_client_list); -static LIST_HEAD(nfs_volume_list); static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); #ifdef CONFIG_NFS_V4 -static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */ /* * Get a unique NFSv4.0 callback identifier which will be used @@ -66,15 +66,16 @@ static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) { int ret = 0; + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); if (clp->rpc_ops->version != 4 || minorversion != 0) return ret; retry: - if (!idr_pre_get(&cb_ident_idr, GFP_KERNEL)) + if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) return -ENOMEM; - spin_lock(&nfs_client_lock); - ret = idr_get_new(&cb_ident_idr, clp, &clp->cl_cb_ident); - spin_unlock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); + ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident); + spin_unlock(&nn->nfs_client_lock); if (ret == -EAGAIN) goto retry; return ret; @@ -89,7 +90,7 @@ static bool nfs4_disable_idmapping = true; /* * RPC cruft for NFS */ -static struct rpc_version *nfs_version[5] = { +static const struct rpc_version *nfs_version[5] = { [2] = &nfs_version2, #ifdef CONFIG_NFS_V3 [3] = &nfs_version3, @@ -99,7 +100,7 @@ static struct rpc_version *nfs_version[5] = { #endif }; -struct rpc_program nfs_program = { +const struct rpc_program nfs_program = { .name = "nfs", .number = NFS_PROGRAM, .nrvers = ARRAY_SIZE(nfs_version), @@ -115,11 +116,11 @@ struct rpc_stat nfs_rpcstat = { #ifdef CONFIG_NFS_V3_ACL static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program }; -static struct rpc_version * nfsacl_version[] = { +static const struct rpc_version *nfsacl_version[] = { [3] = &nfsacl_version3, }; -struct rpc_program nfsacl_program = { +const struct rpc_program nfsacl_program = { .name = "nfsacl", .number = NFS_ACL_PROGRAM, .nrvers = ARRAY_SIZE(nfsacl_version), @@ -135,6 +136,7 @@ struct nfs_client_initdata { const struct nfs_rpc_ops *rpc_ops; int proto; u32 minorversion; + struct net *net; }; /* @@ -171,6 +173,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ clp->cl_rpcclient = ERR_PTR(-EINVAL); clp->cl_proto = cl_init->proto; + clp->net = get_net(cl_init->net); #ifdef CONFIG_NFS_V4 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion); @@ -202,8 +205,11 @@ error_0: #ifdef CONFIG_NFS_V4_1 static void nfs4_shutdown_session(struct nfs_client *clp) { - if (nfs4_has_session(clp)) + if (nfs4_has_session(clp)) { + nfs4_deviceid_purge_client(clp); nfs4_destroy_session(clp->cl_session); + } + } #else /* CONFIG_NFS_V4_1 */ static void nfs4_shutdown_session(struct nfs_client *clp) @@ -233,16 +239,20 @@ static void nfs4_shutdown_client(struct nfs_client *clp) } /* idr_remove_all is not needed as all id's are removed by nfs_put_client */ -void nfs_cleanup_cb_ident_idr(void) +void nfs_cleanup_cb_ident_idr(struct net *net) { - idr_destroy(&cb_ident_idr); + struct nfs_net *nn = net_generic(net, nfs_net_id); + + idr_destroy(&nn->cb_ident_idr); } /* nfs_client_lock held */ static void nfs_cb_idr_remove_locked(struct nfs_client *clp) { + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); + if (clp->cl_cb_ident) - idr_remove(&cb_ident_idr, clp->cl_cb_ident); + idr_remove(&nn->cb_ident_idr, clp->cl_cb_ident); } static void pnfs_init_server(struct nfs_server *server) @@ -260,7 +270,7 @@ static void nfs4_shutdown_client(struct nfs_client *clp) { } -void nfs_cleanup_cb_ident_idr(void) +void nfs_cleanup_cb_ident_idr(struct net *net) { } @@ -292,10 +302,10 @@ static void nfs_free_client(struct nfs_client *clp) if (clp->cl_machine_cred != NULL) put_rpccred(clp->cl_machine_cred); - nfs4_deviceid_purge_client(clp); - + put_net(clp->net); kfree(clp->cl_hostname); kfree(clp->server_scope); + kfree(clp->impl_id); kfree(clp); dprintk("<-- nfs_free_client()\n"); @@ -306,15 +316,18 @@ static void nfs_free_client(struct nfs_client *clp) */ void nfs_put_client(struct nfs_client *clp) { + struct nfs_net *nn; + if (!clp) return; dprintk("--> nfs_put_client({%d})\n", atomic_read(&clp->cl_count)); + nn = net_generic(clp->net, nfs_net_id); - if (atomic_dec_and_lock(&clp->cl_count, &nfs_client_lock)) { + if (atomic_dec_and_lock(&clp->cl_count, &nn->nfs_client_lock)) { list_del(&clp->cl_share_link); nfs_cb_idr_remove_locked(clp); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); BUG_ON(!list_empty(&clp->cl_superblocks)); @@ -392,6 +405,7 @@ static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1, (sin1->sin_port == sin2->sin_port); } +#if defined(CONFIG_NFS_V4_1) /* * Test if two socket addresses represent the same actual socket, * by comparing (only) relevant fields, excluding the port number. @@ -410,6 +424,7 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, } return 0; } +#endif /* CONFIG_NFS_V4_1 */ /* * Test if two socket addresses represent the same actual socket, @@ -430,10 +445,10 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1, return 0; } +#if defined(CONFIG_NFS_V4_1) /* Common match routine for v4.0 and v4.1 callback services */ -bool -nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp, - u32 minorversion) +static bool nfs4_cb_match_client(const struct sockaddr *addr, + struct nfs_client *clp, u32 minorversion) { struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; @@ -453,6 +468,7 @@ nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp, return true; } +#endif /* CONFIG_NFS_V4_1 */ /* * Find an nfs_client on the list that matches the initialisation data @@ -462,8 +478,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat { struct nfs_client *clp; const struct sockaddr *sap = data->addr; + struct nfs_net *nn = net_generic(data->net, nfs_net_id); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { const struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; /* Don't match clients that failed to initialise properly */ if (clp->cl_cons_state < 0) @@ -501,13 +518,14 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, { struct nfs_client *clp, *new = NULL; int error; + struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id); dprintk("--> nfs_get_client(%s,v%u)\n", cl_init->hostname ?: "", cl_init->rpc_ops->version); /* see if the client already exists */ do { - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); clp = nfs_match_client(cl_init); if (clp) @@ -515,7 +533,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, if (new) goto install_client; - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); new = nfs_alloc_client(cl_init); } while (!IS_ERR(new)); @@ -526,8 +544,8 @@ nfs_get_client(const struct nfs_client_initdata *cl_init, /* install a new client and return with it unready */ install_client: clp = new; - list_add(&clp->cl_share_link, &nfs_client_list); - spin_unlock(&nfs_client_lock); + list_add(&clp->cl_share_link, &nn->nfs_client_list); + spin_unlock(&nn->nfs_client_lock); error = cl_init->rpc_ops->init_client(clp, timeparms, ip_addr, authflavour, noresvport); @@ -542,7 +560,7 @@ install_client: * - make sure it's ready before returning */ found_client: - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); if (new) nfs_free_client(new); @@ -642,7 +660,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, { struct rpc_clnt *clnt = NULL; struct rpc_create_args args = { - .net = &init_net, + .net = clp->net, .protocol = clp->cl_proto, .address = (struct sockaddr *)&clp->cl_addr, .addrsize = clp->cl_addrlen, @@ -696,6 +714,7 @@ static int nfs_start_lockd(struct nfs_server *server) .nfs_version = clp->rpc_ops->version, .noresvport = server->flags & NFS_MOUNT_NORESVPORT ? 1 : 0, + .net = clp->net, }; if (nlm_init.nfs_version > 3) @@ -831,6 +850,7 @@ static int nfs_init_server(struct nfs_server *server, .addrlen = data->nfs_server.addrlen, .rpc_ops = &nfs_v2_clientops, .proto = data->nfs_server.protocol, + .net = data->net, }; struct rpc_timeout timeparms; struct nfs_client *clp; @@ -1029,25 +1049,30 @@ static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_serve static void nfs_server_insert_lists(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; + struct nfs_net *nn = net_generic(clp->net, nfs_net_id); - spin_lock(&nfs_client_lock); + spin_lock(&nn->nfs_client_lock); list_add_tail_rcu(&server->client_link, &clp->cl_superblocks); - list_add_tail(&server->master_link, &nfs_volume_list); + list_add_tail(&server->master_link, &nn->nfs_volume_list); clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); } static void nfs_server_remove_lists(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; + struct nfs_net *nn; - spin_lock(&nfs_client_lock); + if (clp == NULL) + return; + nn = net_generic(clp->net, nfs_net_id); + spin_lock(&nn->nfs_client_lock); list_del_rcu(&server->client_link); - if (clp && list_empty(&clp->cl_superblocks)) + if (list_empty(&clp->cl_superblocks)) set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); list_del(&server->master_link); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); synchronize_rcu(); } @@ -1086,6 +1111,8 @@ static struct nfs_server *nfs_alloc_server(void) return NULL; } + ida_init(&server->openowner_id); + ida_init(&server->lockowner_id); pnfs_init_server(server); return server; @@ -1111,6 +1138,8 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); + ida_destroy(&server->lockowner_id); + ida_destroy(&server->openowner_id); nfs_free_iostats(server->io_stats); bdi_destroy(&server->backing_dev_info); kfree(server); @@ -1189,45 +1218,19 @@ error: /* * NFSv4.0 callback thread helper * - * Find a client by IP address, protocol version, and minorversion - * - * Called from the pg_authenticate method. The callback identifier - * is not used as it has not been decoded. - * - * Returns NULL if no such client - */ -struct nfs_client * -nfs4_find_client_no_ident(const struct sockaddr *addr) -{ - struct nfs_client *clp; - - spin_lock(&nfs_client_lock); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { - if (nfs4_cb_match_client(addr, clp, 0) == false) - continue; - atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); - return clp; - } - spin_unlock(&nfs_client_lock); - return NULL; -} - -/* - * NFSv4.0 callback thread helper - * * Find a client by callback identifier */ struct nfs_client * -nfs4_find_client_ident(int cb_ident) +nfs4_find_client_ident(struct net *net, int cb_ident) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(net, nfs_net_id); - spin_lock(&nfs_client_lock); - clp = idr_find(&cb_ident_idr, cb_ident); + spin_lock(&nn->nfs_client_lock); + clp = idr_find(&nn->cb_ident_idr, cb_ident); if (clp) atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return clp; } @@ -1240,13 +1243,14 @@ nfs4_find_client_ident(int cb_ident) * Returns NULL if no such client */ struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *addr, +nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, struct nfs4_sessionid *sid) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(net, nfs_net_id); - spin_lock(&nfs_client_lock); - list_for_each_entry(clp, &nfs_client_list, cl_share_link) { + spin_lock(&nn->nfs_client_lock); + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { if (nfs4_cb_match_client(addr, clp, 1) == false) continue; @@ -1259,17 +1263,17 @@ nfs4_find_client_sessionid(const struct sockaddr *addr, continue; atomic_inc(&clp->cl_count); - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return clp; } - spin_unlock(&nfs_client_lock); + spin_unlock(&nn->nfs_client_lock); return NULL; } #else /* CONFIG_NFS_V4_1 */ struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *addr, +nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, struct nfs4_sessionid *sid) { return NULL; @@ -1284,16 +1288,18 @@ static int nfs4_init_callback(struct nfs_client *clp) int error; if (clp->rpc_ops->version == 4) { + struct rpc_xprt *xprt; + + xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt); + if (nfs4_has_session(clp)) { - error = xprt_setup_backchannel( - clp->cl_rpcclient->cl_xprt, + error = xprt_setup_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); if (error < 0) return error; } - error = nfs_callback_up(clp->cl_mvops->minor_version, - clp->cl_rpcclient->cl_xprt); + error = nfs_callback_up(clp->cl_mvops->minor_version, xprt); if (error < 0) { dprintk("%s: failed to start callback. Error = %d\n", __func__, error); @@ -1344,6 +1350,7 @@ int nfs4_init_client(struct nfs_client *clp, rpc_authflavor_t authflavour, int noresvport) { + char buf[INET6_ADDRSTRLEN + 1]; int error; if (clp->cl_cons_state == NFS_CS_READY) { @@ -1359,6 +1366,20 @@ int nfs4_init_client(struct nfs_client *clp, 1, noresvport); if (error < 0) goto error; + + /* If no clientaddr= option was specified, find a usable cb address */ + if (ip_addr == NULL) { + struct sockaddr_storage cb_addr; + struct sockaddr *sap = (struct sockaddr *)&cb_addr; + + error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr)); + if (error < 0) + goto error; + error = rpc_ntop(sap, buf, sizeof(buf)); + if (error < 0) + goto error; + ip_addr = (const char *)buf; + } strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr)); error = nfs_idmap_new(clp); @@ -1393,7 +1414,7 @@ static int nfs4_set_client(struct nfs_server *server, const char *ip_addr, rpc_authflavor_t authflavour, int proto, const struct rpc_timeout *timeparms, - u32 minorversion) + u32 minorversion, struct net *net) { struct nfs_client_initdata cl_init = { .hostname = hostname, @@ -1402,6 +1423,7 @@ static int nfs4_set_client(struct nfs_server *server, .rpc_ops = &nfs_v4_clientops, .proto = proto, .minorversion = minorversion, + .net = net, }; struct nfs_client *clp; int error; @@ -1453,6 +1475,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, .rpc_ops = &nfs_v4_clientops, .proto = ds_proto, .minorversion = mds_clp->cl_minorversion, + .net = mds_clp->net, }; struct rpc_timeout ds_timeout = { .to_initval = 15 * HZ, @@ -1580,7 +1603,8 @@ static int nfs4_init_server(struct nfs_server *server, data->auth_flavors[0], data->nfs_server.protocol, &timeparms, - data->minorversion); + data->minorversion, + data->net); if (error < 0) goto error; @@ -1675,9 +1699,10 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, data->addrlen, parent_client->cl_ipaddr, data->authflavor, - parent_server->client->cl_xprt->prot, + rpc_protocol(parent_server->client), parent_server->client->cl_timeout, - parent_client->cl_mvops->minor_version); + parent_client->cl_mvops->minor_version, + parent_client->net); if (error < 0) goto error; @@ -1770,6 +1795,18 @@ out_free_server: return ERR_PTR(error); } +void nfs_clients_init(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + + INIT_LIST_HEAD(&nn->nfs_client_list); + INIT_LIST_HEAD(&nn->nfs_volume_list); +#ifdef CONFIG_NFS_V4 + idr_init(&nn->cb_ident_idr); +#endif + spin_lock_init(&nn->nfs_client_lock); +} + #ifdef CONFIG_PROC_FS static struct proc_dir_entry *proc_fs_nfs; @@ -1823,13 +1860,15 @@ static int nfs_server_list_open(struct inode *inode, struct file *file) { struct seq_file *m; int ret; + struct pid_namespace *pid_ns = file->f_dentry->d_sb->s_fs_info; + struct net *net = pid_ns->child_reaper->nsproxy->net_ns; ret = seq_open(file, &nfs_server_list_ops); if (ret < 0) return ret; m = file->private_data; - m->private = PDE(inode)->data; + m->private = net; return 0; } @@ -1839,9 +1878,11 @@ static int nfs_server_list_open(struct inode *inode, struct file *file) */ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) { + struct nfs_net *nn = net_generic(m->private, nfs_net_id); + /* lock the list against modification */ - spin_lock(&nfs_client_lock); - return seq_list_start_head(&nfs_client_list, *_pos); + spin_lock(&nn->nfs_client_lock); + return seq_list_start_head(&nn->nfs_client_list, *_pos); } /* @@ -1849,7 +1890,9 @@ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) */ static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) { - return seq_list_next(v, &nfs_client_list, pos); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + return seq_list_next(v, &nn->nfs_client_list, pos); } /* @@ -1857,7 +1900,9 @@ static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) */ static void nfs_server_list_stop(struct seq_file *p, void *v) { - spin_unlock(&nfs_client_lock); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + spin_unlock(&nn->nfs_client_lock); } /* @@ -1866,9 +1911,10 @@ static void nfs_server_list_stop(struct seq_file *p, void *v) static int nfs_server_list_show(struct seq_file *m, void *v) { struct nfs_client *clp; + struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* display header on line 1 */ - if (v == &nfs_client_list) { + if (v == &nn->nfs_client_list) { seq_puts(m, "NV SERVER PORT USE HOSTNAME\n"); return 0; } @@ -1880,12 +1926,14 @@ static int nfs_server_list_show(struct seq_file *m, void *v) if (clp->cl_cons_state != NFS_CS_READY) return 0; + rcu_read_lock(); seq_printf(m, "v%u %s %s %3d %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT), atomic_read(&clp->cl_count), clp->cl_hostname); + rcu_read_unlock(); return 0; } @@ -1897,13 +1945,15 @@ static int nfs_volume_list_open(struct inode *inode, struct file *file) { struct seq_file *m; int ret; + struct pid_namespace *pid_ns = file->f_dentry->d_sb->s_fs_info; + struct net *net = pid_ns->child_reaper->nsproxy->net_ns; ret = seq_open(file, &nfs_volume_list_ops); if (ret < 0) return ret; m = file->private_data; - m->private = PDE(inode)->data; + m->private = net; return 0; } @@ -1913,9 +1963,11 @@ static int nfs_volume_list_open(struct inode *inode, struct file *file) */ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) { + struct nfs_net *nn = net_generic(m->private, nfs_net_id); + /* lock the list against modification */ - spin_lock(&nfs_client_lock); - return seq_list_start_head(&nfs_volume_list, *_pos); + spin_lock(&nn->nfs_client_lock); + return seq_list_start_head(&nn->nfs_volume_list, *_pos); } /* @@ -1923,7 +1975,9 @@ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) */ static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) { - return seq_list_next(v, &nfs_volume_list, pos); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + return seq_list_next(v, &nn->nfs_volume_list, pos); } /* @@ -1931,7 +1985,9 @@ static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) */ static void nfs_volume_list_stop(struct seq_file *p, void *v) { - spin_unlock(&nfs_client_lock); + struct nfs_net *nn = net_generic(p->private, nfs_net_id); + + spin_unlock(&nn->nfs_client_lock); } /* @@ -1942,9 +1998,10 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) struct nfs_server *server; struct nfs_client *clp; char dev[8], fsid[17]; + struct nfs_net *nn = net_generic(m->private, nfs_net_id); /* display header on line 1 */ - if (v == &nfs_volume_list) { + if (v == &nn->nfs_volume_list) { seq_puts(m, "NV SERVER PORT DEV FSID FSC\n"); return 0; } @@ -1959,6 +2016,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) (unsigned long long) server->fsid.major, (unsigned long long) server->fsid.minor); + rcu_read_lock(); seq_printf(m, "v%u %s %s %-7s %-17s %s\n", clp->rpc_ops->version, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR), @@ -1966,6 +2024,7 @@ static int nfs_volume_list_show(struct seq_file *m, void *v) dev, fsid, nfs_server_fscache_state(server)); + rcu_read_unlock(); return 0; } diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 7f265406980..89af1d26927 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -105,7 +105,7 @@ again: continue; if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) continue; - if (memcmp(state->stateid.data, stateid->data, sizeof(state->stateid.data)) != 0) + if (!nfs4_stateid_match(&state->stateid, stateid)) continue; get_nfs_open_context(ctx); spin_unlock(&inode->i_lock); @@ -139,8 +139,7 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, if (delegation != NULL) { spin_lock(&delegation->lock); if (delegation->inode != NULL) { - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + nfs4_stateid_copy(&delegation->stateid, &res->delegation); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; oldcred = delegation->cred; @@ -236,8 +235,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct delegation = kmalloc(sizeof(*delegation), GFP_NOFS); if (delegation == NULL) return -ENOMEM; - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + nfs4_stateid_copy(&delegation->stateid, &res->delegation); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; delegation->change_attr = inode->i_version; @@ -250,19 +248,22 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct old_delegation = rcu_dereference_protected(nfsi->delegation, lockdep_is_held(&clp->cl_lock)); if (old_delegation != NULL) { - if (memcmp(&delegation->stateid, &old_delegation->stateid, - sizeof(old_delegation->stateid)) == 0 && + if (nfs4_stateid_match(&delegation->stateid, + &old_delegation->stateid) && delegation->type == old_delegation->type) { goto out; } /* * Deal with broken servers that hand out two * delegations for the same file. + * Allow for upgrades to a WRITE delegation, but + * nothing else. */ dfprintk(FILE, "%s: server %s handed out " "a duplicate delegation!\n", __func__, clp->cl_hostname); - if (delegation->type <= old_delegation->type) { + if (delegation->type == old_delegation->type || + !(delegation->type & FMODE_WRITE)) { freeme = delegation; delegation = NULL; goto out; @@ -455,17 +456,24 @@ static void nfs_client_mark_return_all_delegation_types(struct nfs_client *clp, rcu_read_unlock(); } -static void nfs_client_mark_return_all_delegations(struct nfs_client *clp) -{ - nfs_client_mark_return_all_delegation_types(clp, FMODE_READ|FMODE_WRITE); -} - static void nfs_delegation_run_state_manager(struct nfs_client *clp) { if (test_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) nfs4_schedule_state_manager(clp); } +void nfs_remove_bad_delegation(struct inode *inode) +{ + struct nfs_delegation *delegation; + + delegation = nfs_detach_delegation(NFS_I(inode), NFS_SERVER(inode)); + if (delegation) { + nfs_inode_find_state_and_recover(inode, &delegation->stateid); + nfs_free_delegation(delegation); + } +} +EXPORT_SYMBOL_GPL(nfs_remove_bad_delegation); + /** * nfs_expire_all_delegation_types * @clp: client to process @@ -488,18 +496,6 @@ void nfs_expire_all_delegations(struct nfs_client *clp) nfs_expire_all_delegation_types(clp, FMODE_READ|FMODE_WRITE); } -/** - * nfs_handle_cb_pathdown - return all delegations after NFS4ERR_CB_PATH_DOWN - * @clp: client to process - * - */ -void nfs_handle_cb_pathdown(struct nfs_client *clp) -{ - if (clp == NULL) - return; - nfs_client_mark_return_all_delegations(clp); -} - static void nfs_mark_return_unreferenced_delegations(struct nfs_server *server) { struct nfs_delegation *delegation; @@ -531,7 +527,7 @@ void nfs_expire_unreferenced_delegations(struct nfs_client *clp) /** * nfs_async_inode_return_delegation - asynchronously return a delegation * @inode: inode to process - * @stateid: state ID information from CB_RECALL arguments + * @stateid: state ID information * * Returns zero on success, or a negative errno value. */ @@ -545,7 +541,7 @@ int nfs_async_inode_return_delegation(struct inode *inode, rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); - if (!clp->cl_mvops->validate_stateid(delegation, stateid)) { + if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) { rcu_read_unlock(); return -ENOENT; } @@ -684,21 +680,25 @@ int nfs_delegations_present(struct nfs_client *clp) * nfs4_copy_delegation_stateid - Copy inode's state ID information * @dst: stateid data structure to fill in * @inode: inode to check + * @flags: delegation type requirement * - * Returns one and fills in "dst->data" * if inode had a delegation, - * otherwise zero is returned. + * Returns "true" and fills in "dst->data" * if inode had a delegation, + * otherwise "false" is returned. */ -int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode) +bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, + fmode_t flags) { struct nfs_inode *nfsi = NFS_I(inode); struct nfs_delegation *delegation; - int ret = 0; + bool ret; + flags &= FMODE_READ|FMODE_WRITE; rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); - if (delegation != NULL) { - memcpy(dst->data, delegation->stateid.data, sizeof(dst->data)); - ret = 1; + ret = (delegation != NULL && (delegation->type & flags) == flags); + if (ret) { + nfs4_stateid_copy(dst, &delegation->stateid); + nfs_mark_delegation_referenced(delegation); } rcu_read_unlock(); return ret; diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index d9322e490c5..cd6a7a8dada 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -42,9 +42,9 @@ void nfs_super_return_all_delegations(struct super_block *sb); void nfs_expire_all_delegations(struct nfs_client *clp); void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags); void nfs_expire_unreferenced_delegations(struct nfs_client *clp); -void nfs_handle_cb_pathdown(struct nfs_client *clp); int nfs_client_return_marked_delegations(struct nfs_client *clp); int nfs_delegations_present(struct nfs_client *clp); +void nfs_remove_bad_delegation(struct inode *inode); void nfs_delegation_mark_reclaim(struct nfs_client *clp); void nfs_delegation_reap_unclaimed(struct nfs_client *clp); @@ -53,7 +53,7 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp); int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync); int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid); int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl); -int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode); +bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags); void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); int nfs_have_delegation(struct inode *inode, fmode_t flags); diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index fd9a872fada..4aaf0316d76 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -207,7 +207,7 @@ struct nfs_cache_array_entry { }; struct nfs_cache_array { - unsigned int size; + int size; int eof_index; u64 last_cookie; struct nfs_cache_array_entry array[0]; @@ -260,10 +260,10 @@ void nfs_readdir_clear_array(struct page *page) struct nfs_cache_array *array; int i; - array = kmap_atomic(page, KM_USER0); + array = kmap_atomic(page); for (i = 0; i < array->size; i++) kfree(array->array[i].string.name); - kunmap_atomic(array, KM_USER0); + kunmap_atomic(array); } /* @@ -1429,6 +1429,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry } open_flags = nd->intent.open.flags; + attr.ia_valid = 0; ctx = create_nfs_open_context(dentry, open_flags); res = ERR_CAST(ctx); @@ -1437,11 +1438,14 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry if (nd->flags & LOOKUP_CREATE) { attr.ia_mode = nd->intent.open.create_mode; - attr.ia_valid = ATTR_MODE; + attr.ia_valid |= ATTR_MODE; attr.ia_mode &= ~current_umask(); - } else { + } else open_flags &= ~(O_EXCL | O_CREAT); - attr.ia_valid = 0; + + if (open_flags & O_TRUNC) { + attr.ia_valid |= ATTR_SIZE; + attr.ia_size = 0; } /* Open the file on the server */ @@ -1495,6 +1499,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd) struct inode *inode; struct inode *dir; struct nfs_open_context *ctx; + struct iattr attr; int openflags, ret = 0; if (nd->flags & LOOKUP_RCU) @@ -1523,19 +1528,27 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd) /* We cannot do exclusive creation on a positive dentry */ if ((openflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL)) goto no_open_dput; - /* We can't create new files, or truncate existing ones here */ - openflags &= ~(O_CREAT|O_EXCL|O_TRUNC); + /* We can't create new files here */ + openflags &= ~(O_CREAT|O_EXCL); ctx = create_nfs_open_context(dentry, openflags); ret = PTR_ERR(ctx); if (IS_ERR(ctx)) goto out; + + attr.ia_valid = 0; + if (openflags & O_TRUNC) { + attr.ia_valid |= ATTR_SIZE; + attr.ia_size = 0; + nfs_wb_all(inode); + } + /* * Note: we're not holding inode->i_mutex and so may be racing with * operations that change the directory. We therefore save the * change attribute *before* we do the RPC call. */ - inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, NULL); + inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr); if (IS_ERR(inode)) { ret = PTR_ERR(inode); switch (ret) { @@ -1870,11 +1883,11 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym if (!page) return -ENOMEM; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(kaddr, symname, pathlen); if (pathlen < PAGE_SIZE) memset(kaddr + pathlen, 0, PAGE_SIZE - pathlen); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); error = NFS_PROTO(dir)->symlink(dir, dentry, page, pathlen, &attr); if (error != 0) { diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 1940f1a56a5..9c7f66ac6cc 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -265,9 +265,7 @@ static void nfs_direct_read_release(void *calldata) } static const struct rpc_call_ops nfs_read_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_read_result, .rpc_release = nfs_direct_read_release, }; @@ -554,9 +552,7 @@ static void nfs_direct_commit_release(void *calldata) } static const struct rpc_call_ops nfs_commit_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_commit_result, .rpc_release = nfs_direct_commit_release, }; @@ -696,9 +692,7 @@ out_unlock: } static const struct rpc_call_ops nfs_write_direct_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_direct_write_result, .rpc_release = nfs_direct_write_release, }; diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c index a6e711ad130..b3924b8a600 100644 --- a/fs/nfs/dns_resolve.c +++ b/fs/nfs/dns_resolve.c @@ -10,8 +10,9 @@ #include <linux/sunrpc/clnt.h> #include <linux/dns_resolver.h> +#include "dns_resolve.h" -ssize_t nfs_dns_resolve_name(char *name, size_t namelen, +ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, struct sockaddr *sa, size_t salen) { ssize_t ret; @@ -20,7 +21,7 @@ ssize_t nfs_dns_resolve_name(char *name, size_t namelen, ip_len = dns_query(NULL, name, namelen, NULL, &ip_addr, NULL); if (ip_len > 0) - ret = rpc_pton(ip_addr, ip_len, sa, salen); + ret = rpc_pton(net, ip_addr, ip_len, sa, salen); else ret = -ESRCH; kfree(ip_addr); @@ -40,15 +41,15 @@ ssize_t nfs_dns_resolve_name(char *name, size_t namelen, #include <linux/sunrpc/clnt.h> #include <linux/sunrpc/cache.h> #include <linux/sunrpc/svcauth.h> +#include <linux/sunrpc/rpc_pipe_fs.h> #include "dns_resolve.h" #include "cache_lib.h" +#include "netns.h" #define NFS_DNS_HASHBITS 4 #define NFS_DNS_HASHTBL_SIZE (1 << NFS_DNS_HASHBITS) -static struct cache_head *nfs_dns_table[NFS_DNS_HASHTBL_SIZE]; - struct nfs_dns_ent { struct cache_head h; @@ -224,7 +225,7 @@ static int nfs_dns_parse(struct cache_detail *cd, char *buf, int buflen) len = qword_get(&buf, buf1, sizeof(buf1)); if (len <= 0) goto out; - key.addrlen = rpc_pton(buf1, len, + key.addrlen = rpc_pton(cd->net, buf1, len, (struct sockaddr *)&key.addr, sizeof(key.addr)); @@ -259,21 +260,6 @@ out: return ret; } -static struct cache_detail nfs_dns_resolve = { - .owner = THIS_MODULE, - .hash_size = NFS_DNS_HASHTBL_SIZE, - .hash_table = nfs_dns_table, - .name = "dns_resolve", - .cache_put = nfs_dns_ent_put, - .cache_upcall = nfs_dns_upcall, - .cache_parse = nfs_dns_parse, - .cache_show = nfs_dns_show, - .match = nfs_dns_match, - .init = nfs_dns_ent_init, - .update = nfs_dns_ent_update, - .alloc = nfs_dns_ent_alloc, -}; - static int do_cache_lookup(struct cache_detail *cd, struct nfs_dns_ent *key, struct nfs_dns_ent **item, @@ -336,8 +322,8 @@ out: return ret; } -ssize_t nfs_dns_resolve_name(char *name, size_t namelen, - struct sockaddr *sa, size_t salen) +ssize_t nfs_dns_resolve_name(struct net *net, char *name, + size_t namelen, struct sockaddr *sa, size_t salen) { struct nfs_dns_ent key = { .hostname = name, @@ -345,28 +331,118 @@ ssize_t nfs_dns_resolve_name(char *name, size_t namelen, }; struct nfs_dns_ent *item = NULL; ssize_t ret; + struct nfs_net *nn = net_generic(net, nfs_net_id); - ret = do_cache_lookup_wait(&nfs_dns_resolve, &key, &item); + ret = do_cache_lookup_wait(nn->nfs_dns_resolve, &key, &item); if (ret == 0) { if (salen >= item->addrlen) { memcpy(sa, &item->addr, item->addrlen); ret = item->addrlen; } else ret = -EOVERFLOW; - cache_put(&item->h, &nfs_dns_resolve); + cache_put(&item->h, nn->nfs_dns_resolve); } else if (ret == -ENOENT) ret = -ESRCH; return ret; } +int nfs_dns_resolver_cache_init(struct net *net) +{ + int err = -ENOMEM; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct cache_detail *cd; + struct cache_head **tbl; + + cd = kzalloc(sizeof(struct cache_detail), GFP_KERNEL); + if (cd == NULL) + goto err_cd; + + tbl = kzalloc(NFS_DNS_HASHTBL_SIZE * sizeof(struct cache_head *), + GFP_KERNEL); + if (tbl == NULL) + goto err_tbl; + + cd->owner = THIS_MODULE, + cd->hash_size = NFS_DNS_HASHTBL_SIZE, + cd->hash_table = tbl, + cd->name = "dns_resolve", + cd->cache_put = nfs_dns_ent_put, + cd->cache_upcall = nfs_dns_upcall, + cd->cache_parse = nfs_dns_parse, + cd->cache_show = nfs_dns_show, + cd->match = nfs_dns_match, + cd->init = nfs_dns_ent_init, + cd->update = nfs_dns_ent_update, + cd->alloc = nfs_dns_ent_alloc, + + nfs_cache_init(cd); + err = nfs_cache_register_net(net, cd); + if (err) + goto err_reg; + nn->nfs_dns_resolve = cd; + return 0; + +err_reg: + nfs_cache_destroy(cd); + kfree(cd->hash_table); +err_tbl: + kfree(cd); +err_cd: + return err; +} + +void nfs_dns_resolver_cache_destroy(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct cache_detail *cd = nn->nfs_dns_resolve; + + nfs_cache_unregister_net(net, cd); + nfs_cache_destroy(cd); + kfree(cd->hash_table); + kfree(cd); +} + +static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, + void *ptr) +{ + struct super_block *sb = ptr; + struct net *net = sb->s_fs_info; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct cache_detail *cd = nn->nfs_dns_resolve; + int ret = 0; + + if (cd == NULL) + return 0; + + if (!try_module_get(THIS_MODULE)) + return 0; + + switch (event) { + case RPC_PIPEFS_MOUNT: + ret = nfs_cache_register_sb(sb, cd); + break; + case RPC_PIPEFS_UMOUNT: + nfs_cache_unregister_sb(sb, cd); + break; + default: + ret = -ENOTSUPP; + break; + } + module_put(THIS_MODULE); + return ret; +} + +static struct notifier_block nfs_dns_resolver_block = { + .notifier_call = rpc_pipefs_event, +}; + int nfs_dns_resolver_init(void) { - return nfs_cache_register(&nfs_dns_resolve); + return rpc_pipefs_notifier_register(&nfs_dns_resolver_block); } void nfs_dns_resolver_destroy(void) { - nfs_cache_unregister(&nfs_dns_resolve); + rpc_pipefs_notifier_unregister(&nfs_dns_resolver_block); } - #endif diff --git a/fs/nfs/dns_resolve.h b/fs/nfs/dns_resolve.h index 199bb5543a9..2e4f596d292 100644 --- a/fs/nfs/dns_resolve.h +++ b/fs/nfs/dns_resolve.h @@ -15,12 +15,22 @@ static inline int nfs_dns_resolver_init(void) static inline void nfs_dns_resolver_destroy(void) {} + +static inline int nfs_dns_resolver_cache_init(struct net *net) +{ + return 0; +} + +static inline void nfs_dns_resolver_cache_destroy(struct net *net) +{} #else extern int nfs_dns_resolver_init(void); extern void nfs_dns_resolver_destroy(void); +extern int nfs_dns_resolver_cache_init(struct net *net); +extern void nfs_dns_resolver_cache_destroy(struct net *net); #endif -extern ssize_t nfs_dns_resolve_name(char *name, size_t namelen, - struct sockaddr *sa, size_t salen); +extern ssize_t nfs_dns_resolve_name(struct net *net, char *name, + size_t namelen, struct sockaddr *sa, size_t salen); #endif diff --git a/fs/nfs/file.c b/fs/nfs/file.c index c43a452f7da..4fdaaa63cf1 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -530,6 +530,8 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) if (mapping != dentry->d_inode->i_mapping) goto out_unlock; + wait_on_page_writeback(page); + pagelen = nfs_page_length(page); if (pagelen == 0) goto out_unlock; diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c index 419119c371b..ae65c16b367 100644 --- a/fs/nfs/fscache.c +++ b/fs/nfs/fscache.c @@ -327,7 +327,7 @@ void nfs_fscache_reset_inode_cookie(struct inode *inode) { struct nfs_inode *nfsi = NFS_I(inode); struct nfs_server *nfss = NFS_SERVER(inode); - struct fscache_cookie *old = nfsi->fscache; + NFS_IFDEBUG(struct fscache_cookie *old = nfsi->fscache); nfs_fscache_inode_lock(inode); if (nfsi->fscache) { diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index dcb61548887..801d6d83078 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -49,11 +49,9 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i { /* The mntroot acts as the dummy root dentry for this superblock */ if (sb->s_root == NULL) { - sb->s_root = d_alloc_root(inode); - if (sb->s_root == NULL) { - iput(inode); + sb->s_root = d_make_root(inode); + if (sb->s_root == NULL) return -ENOMEM; - } ihold(inode); /* * Ensure that this dentry is invisible to d_find_alias(). diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 2c05f1991e1..b7f348bb618 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -34,11 +34,29 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/types.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/slab.h> +#include <linux/parser.h> +#include <linux/fs.h> #include <linux/nfs_idmap.h> +#include <net/net_namespace.h> +#include <linux/sunrpc/rpc_pipe_fs.h> #include <linux/nfs_fs.h> +#include <linux/nfs_fs_sb.h> +#include <linux/key.h> +#include <linux/keyctl.h> +#include <linux/key-type.h> +#include <keys/user-type.h> +#include <linux/module.h> + +#include "internal.h" +#include "netns.h" + +#define NFS_UINT_MAXLEN 11 + +/* Default cache timeout is 10 minutes */ +unsigned int nfs_idmap_cache_timeout = 600; +static const struct cred *id_resolver_cache; +static struct key_type key_type_id_resolver_legacy; + /** * nfs_fattr_init_names - initialise the nfs_fattr owner_name/group_name fields @@ -142,24 +160,7 @@ static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen) return snprintf(buf, buflen, "%u", id); } -#ifdef CONFIG_NFS_USE_NEW_IDMAPPER - -#include <linux/cred.h> -#include <linux/sunrpc/sched.h> -#include <linux/nfs4.h> -#include <linux/nfs_fs_sb.h> -#include <linux/keyctl.h> -#include <linux/key-type.h> -#include <linux/rcupdate.h> -#include <linux/err.h> - -#include <keys/user-type.h> - -#define NFS_UINT_MAXLEN 11 - -const struct cred *id_resolver_cache; - -struct key_type key_type_id_resolver = { +static struct key_type key_type_id_resolver = { .name = "id_resolver", .instantiate = user_instantiate, .match = user_match, @@ -169,13 +170,14 @@ struct key_type key_type_id_resolver = { .read = user_read, }; -int nfs_idmap_init(void) +static int nfs_idmap_init_keyring(void) { struct cred *cred; struct key *keyring; int ret = 0; - printk(KERN_NOTICE "Registering the %s key type\n", key_type_id_resolver.name); + printk(KERN_NOTICE "NFS: Registering the %s key type\n", + key_type_id_resolver.name); cred = prepare_kernel_cred(NULL); if (!cred) @@ -198,6 +200,7 @@ int nfs_idmap_init(void) if (ret < 0) goto failed_put_key; + set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags); cred->thread_keyring = keyring; cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING; id_resolver_cache = cred; @@ -210,7 +213,7 @@ failed_put_cred: return ret; } -void nfs_idmap_quit(void) +static void nfs_idmap_quit_keyring(void) { key_revoke(id_resolver_cache->thread_keyring); unregister_key_type(&key_type_id_resolver); @@ -245,8 +248,10 @@ static ssize_t nfs_idmap_get_desc(const char *name, size_t namelen, return desclen; } -static ssize_t nfs_idmap_request_key(const char *name, size_t namelen, - const char *type, void *data, size_t data_size) +static ssize_t nfs_idmap_request_key(struct key_type *key_type, + const char *name, size_t namelen, + const char *type, void *data, + size_t data_size, struct idmap *idmap) { const struct cred *saved_cred; struct key *rkey; @@ -259,8 +264,12 @@ static ssize_t nfs_idmap_request_key(const char *name, size_t namelen, goto out; saved_cred = override_creds(id_resolver_cache); - rkey = request_key(&key_type_id_resolver, desc, ""); + if (idmap) + rkey = request_key_with_auxdata(key_type, desc, "", 0, idmap); + else + rkey = request_key(&key_type_id_resolver, desc, ""); revert_creds(saved_cred); + kfree(desc); if (IS_ERR(rkey)) { ret = PTR_ERR(rkey); @@ -293,31 +302,46 @@ out: return ret; } +static ssize_t nfs_idmap_get_key(const char *name, size_t namelen, + const char *type, void *data, + size_t data_size, struct idmap *idmap) +{ + ssize_t ret = nfs_idmap_request_key(&key_type_id_resolver, + name, namelen, type, data, + data_size, NULL); + if (ret < 0) { + ret = nfs_idmap_request_key(&key_type_id_resolver_legacy, + name, namelen, type, data, + data_size, idmap); + } + return ret; +} /* ID -> Name */ -static ssize_t nfs_idmap_lookup_name(__u32 id, const char *type, char *buf, size_t buflen) +static ssize_t nfs_idmap_lookup_name(__u32 id, const char *type, char *buf, + size_t buflen, struct idmap *idmap) { char id_str[NFS_UINT_MAXLEN]; int id_len; ssize_t ret; id_len = snprintf(id_str, sizeof(id_str), "%u", id); - ret = nfs_idmap_request_key(id_str, id_len, type, buf, buflen); + ret = nfs_idmap_get_key(id_str, id_len, type, buf, buflen, idmap); if (ret < 0) return -EINVAL; return ret; } /* Name -> ID */ -static int nfs_idmap_lookup_id(const char *name, size_t namelen, - const char *type, __u32 *id) +static int nfs_idmap_lookup_id(const char *name, size_t namelen, const char *type, + __u32 *id, struct idmap *idmap) { char id_str[NFS_UINT_MAXLEN]; long id_long; ssize_t data_size; int ret = 0; - data_size = nfs_idmap_request_key(name, namelen, type, id_str, NFS_UINT_MAXLEN); + data_size = nfs_idmap_get_key(name, namelen, type, id_str, NFS_UINT_MAXLEN, idmap); if (data_size <= 0) { ret = -EINVAL; } else { @@ -327,114 +351,103 @@ static int nfs_idmap_lookup_id(const char *name, size_t namelen, return ret; } -int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid) -{ - if (nfs_map_string_to_numeric(name, namelen, uid)) - return 0; - return nfs_idmap_lookup_id(name, namelen, "uid", uid); -} - -int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *gid) -{ - if (nfs_map_string_to_numeric(name, namelen, gid)) - return 0; - return nfs_idmap_lookup_id(name, namelen, "gid", gid); -} - -int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen) -{ - int ret = -EINVAL; - - if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) - ret = nfs_idmap_lookup_name(uid, "user", buf, buflen); - if (ret < 0) - ret = nfs_map_numeric_to_string(uid, buf, buflen); - return ret; -} -int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, size_t buflen) -{ - int ret = -EINVAL; +/* idmap classic begins here */ +module_param(nfs_idmap_cache_timeout, int, 0644); - if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) - ret = nfs_idmap_lookup_name(gid, "group", buf, buflen); - if (ret < 0) - ret = nfs_map_numeric_to_string(gid, buf, buflen); - return ret; -} - -#else /* CONFIG_NFS_USE_NEW_IDMAPPER not defined */ - -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/init.h> -#include <linux/socket.h> -#include <linux/in.h> -#include <linux/sched.h> -#include <linux/sunrpc/clnt.h> -#include <linux/workqueue.h> -#include <linux/sunrpc/rpc_pipe_fs.h> - -#include <linux/nfs_fs.h> - -#include "nfs4_fs.h" - -#define IDMAP_HASH_SZ 128 - -/* Default cache timeout is 10 minutes */ -unsigned int nfs_idmap_cache_timeout = 600 * HZ; - -static int param_set_idmap_timeout(const char *val, struct kernel_param *kp) -{ - char *endp; - int num = simple_strtol(val, &endp, 0); - int jif = num * HZ; - if (endp == val || *endp || num < 0 || jif < num) - return -EINVAL; - *((int *)kp->arg) = jif; - return 0; -} - -module_param_call(idmap_cache_timeout, param_set_idmap_timeout, param_get_int, - &nfs_idmap_cache_timeout, 0644); - -struct idmap_hashent { - unsigned long ih_expires; - __u32 ih_id; - size_t ih_namelen; - char ih_name[IDMAP_NAMESZ]; +struct idmap { + struct rpc_pipe *idmap_pipe; + struct key_construction *idmap_key_cons; }; -struct idmap_hashtable { - __u8 h_type; - struct idmap_hashent h_entries[IDMAP_HASH_SZ]; +enum { + Opt_find_uid, Opt_find_gid, Opt_find_user, Opt_find_group, Opt_find_err }; -struct idmap { - struct dentry *idmap_dentry; - wait_queue_head_t idmap_wq; - struct idmap_msg idmap_im; - struct mutex idmap_lock; /* Serializes upcalls */ - struct mutex idmap_im_lock; /* Protects the hashtable */ - struct idmap_hashtable idmap_user_hash; - struct idmap_hashtable idmap_group_hash; +static const match_table_t nfs_idmap_tokens = { + { Opt_find_uid, "uid:%s" }, + { Opt_find_gid, "gid:%s" }, + { Opt_find_user, "user:%s" }, + { Opt_find_group, "group:%s" }, + { Opt_find_err, NULL } }; +static int nfs_idmap_legacy_upcall(struct key_construction *, const char *, void *); static ssize_t idmap_pipe_downcall(struct file *, const char __user *, size_t); static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *); -static unsigned int fnvhash32(const void *, size_t); - static const struct rpc_pipe_ops idmap_upcall_ops = { .upcall = rpc_pipe_generic_upcall, .downcall = idmap_pipe_downcall, .destroy_msg = idmap_pipe_destroy_msg, }; +static struct key_type key_type_id_resolver_legacy = { + .name = "id_resolver", + .instantiate = user_instantiate, + .match = user_match, + .revoke = user_revoke, + .destroy = user_destroy, + .describe = user_describe, + .read = user_read, + .request_key = nfs_idmap_legacy_upcall, +}; + +static void __nfs_idmap_unregister(struct rpc_pipe *pipe) +{ + if (pipe->dentry) + rpc_unlink(pipe->dentry); +} + +static int __nfs_idmap_register(struct dentry *dir, + struct idmap *idmap, + struct rpc_pipe *pipe) +{ + struct dentry *dentry; + + dentry = rpc_mkpipe_dentry(dir, "idmap", idmap, pipe); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + pipe->dentry = dentry; + return 0; +} + +static void nfs_idmap_unregister(struct nfs_client *clp, + struct rpc_pipe *pipe) +{ + struct net *net = clp->net; + struct super_block *pipefs_sb; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + __nfs_idmap_unregister(pipe); + rpc_put_sb_net(net); + } +} + +static int nfs_idmap_register(struct nfs_client *clp, + struct idmap *idmap, + struct rpc_pipe *pipe) +{ + struct net *net = clp->net; + struct super_block *pipefs_sb; + int err = 0; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + if (clp->cl_rpcclient->cl_dentry) + err = __nfs_idmap_register(clp->cl_rpcclient->cl_dentry, + idmap, pipe); + rpc_put_sb_net(net); + } + return err; +} + int nfs_idmap_new(struct nfs_client *clp) { struct idmap *idmap; + struct rpc_pipe *pipe; int error; BUG_ON(clp->cl_idmap != NULL); @@ -443,19 +456,19 @@ nfs_idmap_new(struct nfs_client *clp) if (idmap == NULL) return -ENOMEM; - idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_path.dentry, - "idmap", idmap, &idmap_upcall_ops, 0); - if (IS_ERR(idmap->idmap_dentry)) { - error = PTR_ERR(idmap->idmap_dentry); + pipe = rpc_mkpipe_data(&idmap_upcall_ops, 0); + if (IS_ERR(pipe)) { + error = PTR_ERR(pipe); kfree(idmap); return error; } - - mutex_init(&idmap->idmap_lock); - mutex_init(&idmap->idmap_im_lock); - init_waitqueue_head(&idmap->idmap_wq); - idmap->idmap_user_hash.h_type = IDMAP_TYPE_USER; - idmap->idmap_group_hash.h_type = IDMAP_TYPE_GROUP; + error = nfs_idmap_register(clp, idmap, pipe); + if (error) { + rpc_destroy_pipe_data(pipe); + kfree(idmap); + return error; + } + idmap->idmap_pipe = pipe; clp->cl_idmap = idmap; return 0; @@ -468,211 +481,220 @@ nfs_idmap_delete(struct nfs_client *clp) if (!idmap) return; - rpc_unlink(idmap->idmap_dentry); + nfs_idmap_unregister(clp, idmap->idmap_pipe); + rpc_destroy_pipe_data(idmap->idmap_pipe); clp->cl_idmap = NULL; kfree(idmap); } -/* - * Helper routines for manipulating the hashtable - */ -static inline struct idmap_hashent * -idmap_name_hash(struct idmap_hashtable* h, const char *name, size_t len) +static int __rpc_pipefs_event(struct nfs_client *clp, unsigned long event, + struct super_block *sb) { - return &h->h_entries[fnvhash32(name, len) % IDMAP_HASH_SZ]; -} + int err = 0; -static struct idmap_hashent * -idmap_lookup_name(struct idmap_hashtable *h, const char *name, size_t len) -{ - struct idmap_hashent *he = idmap_name_hash(h, name, len); + switch (event) { + case RPC_PIPEFS_MOUNT: + BUG_ON(clp->cl_rpcclient->cl_dentry == NULL); + err = __nfs_idmap_register(clp->cl_rpcclient->cl_dentry, + clp->cl_idmap, + clp->cl_idmap->idmap_pipe); + break; + case RPC_PIPEFS_UMOUNT: + if (clp->cl_idmap->idmap_pipe) { + struct dentry *parent; - if (he->ih_namelen != len || memcmp(he->ih_name, name, len) != 0) - return NULL; - if (time_after(jiffies, he->ih_expires)) - return NULL; - return he; + parent = clp->cl_idmap->idmap_pipe->dentry->d_parent; + __nfs_idmap_unregister(clp->cl_idmap->idmap_pipe); + /* + * Note: This is a dirty hack. SUNRPC hook has been + * called already but simple_rmdir() call for the + * directory returned with error because of idmap pipe + * inside. Thus now we have to remove this directory + * here. + */ + if (rpc_rmdir(parent)) + printk(KERN_ERR "NFS: %s: failed to remove " + "clnt dir!\n", __func__); + } + break; + default: + printk(KERN_ERR "NFS: %s: unknown event: %ld\n", __func__, + event); + return -ENOTSUPP; + } + return err; } -static inline struct idmap_hashent * -idmap_id_hash(struct idmap_hashtable* h, __u32 id) +static struct nfs_client *nfs_get_client_for_event(struct net *net, int event) { - return &h->h_entries[fnvhash32(&id, sizeof(id)) % IDMAP_HASH_SZ]; -} + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct dentry *cl_dentry; + struct nfs_client *clp; -static struct idmap_hashent * -idmap_lookup_id(struct idmap_hashtable *h, __u32 id) -{ - struct idmap_hashent *he = idmap_id_hash(h, id); - if (he->ih_id != id || he->ih_namelen == 0) - return NULL; - if (time_after(jiffies, he->ih_expires)) - return NULL; - return he; + spin_lock(&nn->nfs_client_lock); + list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { + if (clp->rpc_ops != &nfs_v4_clientops) + continue; + cl_dentry = clp->cl_idmap->idmap_pipe->dentry; + if (((event == RPC_PIPEFS_MOUNT) && cl_dentry) || + ((event == RPC_PIPEFS_UMOUNT) && !cl_dentry)) + continue; + atomic_inc(&clp->cl_count); + spin_unlock(&nn->nfs_client_lock); + return clp; + } + spin_unlock(&nn->nfs_client_lock); + return NULL; } -/* - * Routines for allocating new entries in the hashtable. - * For now, we just have 1 entry per bucket, so it's all - * pretty trivial. - */ -static inline struct idmap_hashent * -idmap_alloc_name(struct idmap_hashtable *h, char *name, size_t len) +static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, + void *ptr) { - return idmap_name_hash(h, name, len); + struct super_block *sb = ptr; + struct nfs_client *clp; + int error = 0; + + while ((clp = nfs_get_client_for_event(sb->s_fs_info, event))) { + error = __rpc_pipefs_event(clp, event, sb); + nfs_put_client(clp); + if (error) + break; + } + return error; } -static inline struct idmap_hashent * -idmap_alloc_id(struct idmap_hashtable *h, __u32 id) +#define PIPEFS_NFS_PRIO 1 + +static struct notifier_block nfs_idmap_block = { + .notifier_call = rpc_pipefs_event, + .priority = SUNRPC_PIPEFS_NFS_PRIO, +}; + +int nfs_idmap_init(void) { - return idmap_id_hash(h, id); + int ret; + ret = nfs_idmap_init_keyring(); + if (ret != 0) + goto out; + ret = rpc_pipefs_notifier_register(&nfs_idmap_block); + if (ret != 0) + nfs_idmap_quit_keyring(); +out: + return ret; } -static void -idmap_update_entry(struct idmap_hashent *he, const char *name, - size_t namelen, __u32 id) +void nfs_idmap_quit(void) { - he->ih_id = id; - memcpy(he->ih_name, name, namelen); - he->ih_name[namelen] = '\0'; - he->ih_namelen = namelen; - he->ih_expires = jiffies + nfs_idmap_cache_timeout; + rpc_pipefs_notifier_unregister(&nfs_idmap_block); + nfs_idmap_quit_keyring(); } -/* - * Name -> ID - */ -static int -nfs_idmap_id(struct idmap *idmap, struct idmap_hashtable *h, - const char *name, size_t namelen, __u32 *id) +static int nfs_idmap_prepare_message(char *desc, struct idmap_msg *im, + struct rpc_pipe_msg *msg) { - struct rpc_pipe_msg msg; - struct idmap_msg *im; - struct idmap_hashent *he; - DECLARE_WAITQUEUE(wq, current); - int ret = -EIO; - - im = &idmap->idmap_im; + substring_t substr; + int token, ret; - /* - * String sanity checks - * Note that the userland daemon expects NUL terminated strings - */ - for (;;) { - if (namelen == 0) - return -EINVAL; - if (name[namelen-1] != '\0') - break; - namelen--; - } - if (namelen >= IDMAP_NAMESZ) - return -EINVAL; - - mutex_lock(&idmap->idmap_lock); - mutex_lock(&idmap->idmap_im_lock); - - he = idmap_lookup_name(h, name, namelen); - if (he != NULL) { - *id = he->ih_id; - ret = 0; - goto out; - } + memset(im, 0, sizeof(*im)); + memset(msg, 0, sizeof(*msg)); - memset(im, 0, sizeof(*im)); - memcpy(im->im_name, name, namelen); + im->im_type = IDMAP_TYPE_GROUP; + token = match_token(desc, nfs_idmap_tokens, &substr); - im->im_type = h->h_type; - im->im_conv = IDMAP_CONV_NAMETOID; + switch (token) { + case Opt_find_uid: + im->im_type = IDMAP_TYPE_USER; + case Opt_find_gid: + im->im_conv = IDMAP_CONV_NAMETOID; + ret = match_strlcpy(im->im_name, &substr, IDMAP_NAMESZ); + break; - memset(&msg, 0, sizeof(msg)); - msg.data = im; - msg.len = sizeof(*im); + case Opt_find_user: + im->im_type = IDMAP_TYPE_USER; + case Opt_find_group: + im->im_conv = IDMAP_CONV_IDTONAME; + ret = match_int(&substr, &im->im_id); + break; - add_wait_queue(&idmap->idmap_wq, &wq); - if (rpc_queue_upcall(idmap->idmap_dentry->d_inode, &msg) < 0) { - remove_wait_queue(&idmap->idmap_wq, &wq); + default: + ret = -EINVAL; goto out; } - set_current_state(TASK_UNINTERRUPTIBLE); - mutex_unlock(&idmap->idmap_im_lock); - schedule(); - __set_current_state(TASK_RUNNING); - remove_wait_queue(&idmap->idmap_wq, &wq); - mutex_lock(&idmap->idmap_im_lock); - - if (im->im_status & IDMAP_STATUS_SUCCESS) { - *id = im->im_id; - ret = 0; - } + msg->data = im; + msg->len = sizeof(struct idmap_msg); - out: - memset(im, 0, sizeof(*im)); - mutex_unlock(&idmap->idmap_im_lock); - mutex_unlock(&idmap->idmap_lock); +out: return ret; } -/* - * ID -> Name - */ -static int -nfs_idmap_name(struct idmap *idmap, struct idmap_hashtable *h, - __u32 id, char *name) +static int nfs_idmap_legacy_upcall(struct key_construction *cons, + const char *op, + void *aux) { - struct rpc_pipe_msg msg; + struct rpc_pipe_msg *msg; struct idmap_msg *im; - struct idmap_hashent *he; - DECLARE_WAITQUEUE(wq, current); - int ret = -EIO; - unsigned int len; - - im = &idmap->idmap_im; + struct idmap *idmap = (struct idmap *)aux; + struct key *key = cons->key; + int ret; - mutex_lock(&idmap->idmap_lock); - mutex_lock(&idmap->idmap_im_lock); + /* msg and im are freed in idmap_pipe_destroy_msg */ + msg = kmalloc(sizeof(*msg), GFP_KERNEL); + if (IS_ERR(msg)) { + ret = PTR_ERR(msg); + goto out0; + } - he = idmap_lookup_id(h, id); - if (he) { - memcpy(name, he->ih_name, he->ih_namelen); - ret = he->ih_namelen; - goto out; + im = kmalloc(sizeof(*im), GFP_KERNEL); + if (IS_ERR(im)) { + ret = PTR_ERR(im); + goto out1; } - memset(im, 0, sizeof(*im)); - im->im_type = h->h_type; - im->im_conv = IDMAP_CONV_IDTONAME; - im->im_id = id; + ret = nfs_idmap_prepare_message(key->description, im, msg); + if (ret < 0) + goto out2; - memset(&msg, 0, sizeof(msg)); - msg.data = im; - msg.len = sizeof(*im); + idmap->idmap_key_cons = cons; - add_wait_queue(&idmap->idmap_wq, &wq); + ret = rpc_queue_upcall(idmap->idmap_pipe, msg); + if (ret < 0) + goto out2; - if (rpc_queue_upcall(idmap->idmap_dentry->d_inode, &msg) < 0) { - remove_wait_queue(&idmap->idmap_wq, &wq); - goto out; - } + return ret; + +out2: + kfree(im); +out1: + kfree(msg); +out0: + key_revoke(cons->key); + key_revoke(cons->authkey); + return ret; +} - set_current_state(TASK_UNINTERRUPTIBLE); - mutex_unlock(&idmap->idmap_im_lock); - schedule(); - __set_current_state(TASK_RUNNING); - remove_wait_queue(&idmap->idmap_wq, &wq); - mutex_lock(&idmap->idmap_im_lock); +static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data) +{ + return key_instantiate_and_link(key, data, strlen(data) + 1, + id_resolver_cache->thread_keyring, + authkey); +} - if (im->im_status & IDMAP_STATUS_SUCCESS) { - if ((len = strnlen(im->im_name, IDMAP_NAMESZ)) == 0) - goto out; - memcpy(name, im->im_name, len); - ret = len; +static int nfs_idmap_read_message(struct idmap_msg *im, struct key *key, struct key *authkey) +{ + char id_str[NFS_UINT_MAXLEN]; + int ret = -EINVAL; + + switch (im->im_conv) { + case IDMAP_CONV_NAMETOID: + sprintf(id_str, "%d", im->im_id); + ret = nfs_idmap_instantiate(key, authkey, id_str); + break; + case IDMAP_CONV_IDTONAME: + ret = nfs_idmap_instantiate(key, authkey, im->im_name); + break; } - out: - memset(im, 0, sizeof(*im)); - mutex_unlock(&idmap->idmap_im_lock); - mutex_unlock(&idmap->idmap_lock); return ret; } @@ -681,115 +703,51 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) { struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode); struct idmap *idmap = (struct idmap *)rpci->private; - struct idmap_msg im_in, *im = &idmap->idmap_im; - struct idmap_hashtable *h; - struct idmap_hashent *he = NULL; + struct key_construction *cons = idmap->idmap_key_cons; + struct idmap_msg im; size_t namelen_in; int ret; - if (mlen != sizeof(im_in)) - return -ENOSPC; - - if (copy_from_user(&im_in, src, mlen) != 0) - return -EFAULT; - - mutex_lock(&idmap->idmap_im_lock); - - ret = mlen; - im->im_status = im_in.im_status; - /* If we got an error, terminate now, and wake up pending upcalls */ - if (!(im_in.im_status & IDMAP_STATUS_SUCCESS)) { - wake_up(&idmap->idmap_wq); + if (mlen != sizeof(im)) { + ret = -ENOSPC; goto out; } - /* Sanity checking of strings */ - ret = -EINVAL; - namelen_in = strnlen(im_in.im_name, IDMAP_NAMESZ); - if (namelen_in == 0 || namelen_in == IDMAP_NAMESZ) + if (copy_from_user(&im, src, mlen) != 0) { + ret = -EFAULT; goto out; + } - switch (im_in.im_type) { - case IDMAP_TYPE_USER: - h = &idmap->idmap_user_hash; - break; - case IDMAP_TYPE_GROUP: - h = &idmap->idmap_group_hash; - break; - default: - goto out; + if (!(im.im_status & IDMAP_STATUS_SUCCESS)) { + ret = mlen; + complete_request_key(idmap->idmap_key_cons, -ENOKEY); + goto out_incomplete; } - switch (im_in.im_conv) { - case IDMAP_CONV_IDTONAME: - /* Did we match the current upcall? */ - if (im->im_conv == IDMAP_CONV_IDTONAME - && im->im_type == im_in.im_type - && im->im_id == im_in.im_id) { - /* Yes: copy string, including the terminating '\0' */ - memcpy(im->im_name, im_in.im_name, namelen_in); - im->im_name[namelen_in] = '\0'; - wake_up(&idmap->idmap_wq); - } - he = idmap_alloc_id(h, im_in.im_id); - break; - case IDMAP_CONV_NAMETOID: - /* Did we match the current upcall? */ - if (im->im_conv == IDMAP_CONV_NAMETOID - && im->im_type == im_in.im_type - && strnlen(im->im_name, IDMAP_NAMESZ) == namelen_in - && memcmp(im->im_name, im_in.im_name, namelen_in) == 0) { - im->im_id = im_in.im_id; - wake_up(&idmap->idmap_wq); - } - he = idmap_alloc_name(h, im_in.im_name, namelen_in); - break; - default: + namelen_in = strnlen(im.im_name, IDMAP_NAMESZ); + if (namelen_in == 0 || namelen_in == IDMAP_NAMESZ) { + ret = -EINVAL; goto out; } - /* If the entry is valid, also copy it to the cache */ - if (he != NULL) - idmap_update_entry(he, im_in.im_name, namelen_in, im_in.im_id); - ret = mlen; + ret = nfs_idmap_read_message(&im, cons->key, cons->authkey); + if (ret >= 0) { + key_set_timeout(cons->key, nfs_idmap_cache_timeout); + ret = mlen; + } + out: - mutex_unlock(&idmap->idmap_im_lock); + complete_request_key(idmap->idmap_key_cons, ret); +out_incomplete: return ret; } static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *msg) { - struct idmap_msg *im = msg->data; - struct idmap *idmap = container_of(im, struct idmap, idmap_im); - - if (msg->errno >= 0) - return; - mutex_lock(&idmap->idmap_im_lock); - im->im_status = IDMAP_STATUS_LOOKUPFAIL; - wake_up(&idmap->idmap_wq); - mutex_unlock(&idmap->idmap_im_lock); -} - -/* - * Fowler/Noll/Vo hash - * http://www.isthe.com/chongo/tech/comp/fnv/ - */ - -#define FNV_P_32 ((unsigned int)0x01000193) /* 16777619 */ -#define FNV_1_32 ((unsigned int)0x811c9dc5) /* 2166136261 */ - -static unsigned int fnvhash32(const void *buf, size_t buflen) -{ - const unsigned char *p, *end = (const unsigned char *)buf + buflen; - unsigned int hash = FNV_1_32; - - for (p = buf; p < end; p++) { - hash *= FNV_P_32; - hash ^= (unsigned int)*p; - } - - return hash; + /* Free memory allocated in nfs_idmap_legacy_upcall() */ + kfree(msg->data); + kfree(msg); } int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid) @@ -798,16 +756,16 @@ int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_ if (nfs_map_string_to_numeric(name, namelen, uid)) return 0; - return nfs_idmap_id(idmap, &idmap->idmap_user_hash, name, namelen, uid); + return nfs_idmap_lookup_id(name, namelen, "uid", uid, idmap); } -int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid) +int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *gid) { struct idmap *idmap = server->nfs_client->cl_idmap; - if (nfs_map_string_to_numeric(name, namelen, uid)) + if (nfs_map_string_to_numeric(name, namelen, gid)) return 0; - return nfs_idmap_id(idmap, &idmap->idmap_group_hash, name, namelen, uid); + return nfs_idmap_lookup_id(name, namelen, "gid", gid, idmap); } int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen) @@ -816,21 +774,19 @@ int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, s int ret = -EINVAL; if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) - ret = nfs_idmap_name(idmap, &idmap->idmap_user_hash, uid, buf); + ret = nfs_idmap_lookup_name(uid, "user", buf, buflen, idmap); if (ret < 0) ret = nfs_map_numeric_to_string(uid, buf, buflen); return ret; } -int nfs_map_gid_to_group(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen) +int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, size_t buflen) { struct idmap *idmap = server->nfs_client->cl_idmap; int ret = -EINVAL; if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) - ret = nfs_idmap_name(idmap, &idmap->idmap_group_hash, uid, buf); + ret = nfs_idmap_lookup_name(gid, "group", buf, buflen, idmap); if (ret < 0) - ret = nfs_map_numeric_to_string(uid, buf, buflen); + ret = nfs_map_numeric_to_string(gid, buf, buflen); return ret; } - -#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */ diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index f649fba8c38..7bb4d13c1cd 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -39,6 +39,7 @@ #include <linux/slab.h> #include <linux/compat.h> #include <linux/freezer.h> +#include <linux/crc32.h> #include <asm/system.h> #include <asm/uaccess.h> @@ -51,6 +52,7 @@ #include "fscache.h" #include "dns_resolve.h" #include "pnfs.h" +#include "netns.h" #define NFSDBG_FACILITY NFSDBG_VFS @@ -388,9 +390,10 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) unlock_new_inode(inode); } else nfs_refresh_inode(inode, fattr); - dprintk("NFS: nfs_fhget(%s/%Ld ct=%d)\n", + dprintk("NFS: nfs_fhget(%s/%Ld fh_crc=0x%08x ct=%d)\n", inode->i_sb->s_id, (long long)NFS_FILEID(inode), + nfs_display_fhandle_hash(fh), atomic_read(&inode->i_count)); out: @@ -401,7 +404,7 @@ out_no_inode: goto out; } -#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE) +#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN) int nfs_setattr(struct dentry *dentry, struct iattr *attr) @@ -423,7 +426,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) /* Optimization: if the end result is no change, don't RPC */ attr->ia_valid &= NFS_VALID_ATTRS; - if ((attr->ia_valid & ~ATTR_FILE) == 0) + if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) return 0; /* Write all dirty data */ @@ -1044,6 +1047,67 @@ struct nfs_fh *nfs_alloc_fhandle(void) return fh; } +#ifdef NFS_DEBUG +/* + * _nfs_display_fhandle_hash - calculate the crc32 hash for the filehandle + * in the same way that wireshark does + * + * @fh: file handle + * + * For debugging only. + */ +u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh) +{ + /* wireshark uses 32-bit AUTODIN crc and does a bitwise + * not on the result */ + return ~crc32(0xFFFFFFFF, &fh->data[0], fh->size); +} + +/* + * _nfs_display_fhandle - display an NFS file handle on the console + * + * @fh: file handle to display + * @caption: display caption + * + * For debugging only. + */ +void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption) +{ + unsigned short i; + + if (fh == NULL || fh->size == 0) { + printk(KERN_DEFAULT "%s at %p is empty\n", caption, fh); + return; + } + + printk(KERN_DEFAULT "%s at %p is %u bytes, crc: 0x%08x:\n", + caption, fh, fh->size, _nfs_display_fhandle_hash(fh)); + for (i = 0; i < fh->size; i += 16) { + __be32 *pos = (__be32 *)&fh->data[i]; + + switch ((fh->size - i - 1) >> 2) { + case 0: + printk(KERN_DEFAULT " %08x\n", + be32_to_cpup(pos)); + break; + case 1: + printk(KERN_DEFAULT " %08x %08x\n", + be32_to_cpup(pos), be32_to_cpup(pos + 1)); + break; + case 2: + printk(KERN_DEFAULT " %08x %08x %08x\n", + be32_to_cpup(pos), be32_to_cpup(pos + 1), + be32_to_cpup(pos + 2)); + break; + default: + printk(KERN_DEFAULT " %08x %08x %08x %08x\n", + be32_to_cpup(pos), be32_to_cpup(pos + 1), + be32_to_cpup(pos + 2), be32_to_cpup(pos + 3)); + } + } +} +#endif + /** * nfs_inode_attrs_need_update - check if the inode attributes need updating * @inode - pointer to inode @@ -1211,8 +1275,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) unsigned long now = jiffies; unsigned long save_cache_validity; - dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n", + dfprintk(VFS, "NFS: %s(%s/%ld fh_crc=0x%08x ct=%d info=0x%x)\n", __func__, inode->i_sb->s_id, inode->i_ino, + nfs_display_fhandle_hash(NFS_FH(inode)), atomic_read(&inode->i_count), fattr->valid); if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) @@ -1406,7 +1471,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) /* * Big trouble! The inode has become a different object. */ - printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n", + printk(KERN_DEBUG "NFS: %s: inode %ld mode changed, %07o to %07o\n", __func__, inode->i_ino, inode->i_mode, fattr->mode); out_err: /* @@ -1495,7 +1560,7 @@ static void init_once(void *foo) INIT_LIST_HEAD(&nfsi->open_files); INIT_LIST_HEAD(&nfsi->access_cache_entry_lru); INIT_LIST_HEAD(&nfsi->access_cache_inode_lru); - INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC); + INIT_LIST_HEAD(&nfsi->commit_list); nfsi->npages = 0; nfsi->ncommit = 0; atomic_set(&nfsi->silly_count, 1); @@ -1552,6 +1617,28 @@ static void nfsiod_stop(void) destroy_workqueue(wq); } +int nfs_net_id; +EXPORT_SYMBOL_GPL(nfs_net_id); + +static int nfs_net_init(struct net *net) +{ + nfs_clients_init(net); + return nfs_dns_resolver_cache_init(net); +} + +static void nfs_net_exit(struct net *net) +{ + nfs_dns_resolver_cache_destroy(net); + nfs_cleanup_cb_ident_idr(net); +} + +static struct pernet_operations nfs_net_ops = { + .init = nfs_net_init, + .exit = nfs_net_exit, + .id = &nfs_net_id, + .size = sizeof(struct nfs_net), +}; + /* * Initialize NFS */ @@ -1561,10 +1648,14 @@ static int __init init_nfs_fs(void) err = nfs_idmap_init(); if (err < 0) - goto out9; + goto out10; err = nfs_dns_resolver_init(); if (err < 0) + goto out9; + + err = register_pernet_subsys(&nfs_net_ops); + if (err < 0) goto out8; err = nfs_fscache_register(); @@ -1600,14 +1691,14 @@ static int __init init_nfs_fs(void) goto out0; #ifdef CONFIG_PROC_FS - rpc_proc_register(&nfs_rpcstat); + rpc_proc_register(&init_net, &nfs_rpcstat); #endif if ((err = register_nfs_fs()) != 0) goto out; return 0; out: #ifdef CONFIG_PROC_FS - rpc_proc_unregister("nfs"); + rpc_proc_unregister(&init_net, "nfs"); #endif nfs_destroy_directcache(); out0: @@ -1625,10 +1716,12 @@ out5: out6: nfs_fscache_unregister(); out7: - nfs_dns_resolver_destroy(); + unregister_pernet_subsys(&nfs_net_ops); out8: - nfs_idmap_quit(); + nfs_dns_resolver_destroy(); out9: + nfs_idmap_quit(); +out10: return err; } @@ -1640,12 +1733,12 @@ static void __exit exit_nfs_fs(void) nfs_destroy_inodecache(); nfs_destroy_nfspagecache(); nfs_fscache_unregister(); + unregister_pernet_subsys(&nfs_net_ops); nfs_dns_resolver_destroy(); nfs_idmap_quit(); #ifdef CONFIG_PROC_FS - rpc_proc_unregister("nfs"); + rpc_proc_unregister(&init_net, "nfs"); #endif - nfs_cleanup_cb_ident_idr(); unregister_nfs_fs(); nfs_fs_proc_exit(); nfsiod_stop(); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 8102db9b926..2476dc69365 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -123,6 +123,7 @@ struct nfs_parsed_mount_data { } nfs_server; struct security_mnt_opts lsm_opts; + struct net *net; }; /* mount_clnt.c */ @@ -137,20 +138,22 @@ struct nfs_mount_request { int noresvport; unsigned int *auth_flav_len; rpc_authflavor_t *auth_flavs; + struct net *net; }; extern int nfs_mount(struct nfs_mount_request *info); extern void nfs_umount(const struct nfs_mount_request *info); /* client.c */ -extern struct rpc_program nfs_program; +extern const struct rpc_program nfs_program; +extern void nfs_clients_init(struct net *net); -extern void nfs_cleanup_cb_ident_idr(void); +extern void nfs_cleanup_cb_ident_idr(struct net *); extern void nfs_put_client(struct nfs_client *); -extern struct nfs_client *nfs4_find_client_no_ident(const struct sockaddr *); -extern struct nfs_client *nfs4_find_client_ident(int); +extern struct nfs_client *nfs4_find_client_ident(struct net *, int); extern struct nfs_client * -nfs4_find_client_sessionid(const struct sockaddr *, struct nfs4_sessionid *); +nfs4_find_client_sessionid(struct net *, const struct sockaddr *, + struct nfs4_sessionid *); extern struct nfs_server *nfs_create_server( const struct nfs_parsed_mount_data *, struct nfs_fh *); @@ -329,6 +332,8 @@ void nfs_retry_commit(struct list_head *page_list, void nfs_commit_clear_lock(struct nfs_inode *nfsi); void nfs_commitdata_release(void *data); void nfs_commit_release_pages(struct nfs_write_data *data); +void nfs_request_add_commit_list(struct nfs_page *req, struct list_head *head); +void nfs_request_remove_commit_list(struct nfs_page *req); #ifdef CONFIG_MIGRATION extern int nfs_migrate_page(struct address_space *, diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index d4c2d6b7507..8e65c7f1f87 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -16,7 +16,7 @@ #include <linux/nfs_fs.h> #include "internal.h" -#ifdef RPC_DEBUG +#ifdef NFS_DEBUG # define NFSDBG_FACILITY NFSDBG_MOUNT #endif @@ -67,7 +67,7 @@ enum { MOUNTPROC3_EXPORT = 5, }; -static struct rpc_program mnt_program; +static const struct rpc_program mnt_program; /* * Defined by OpenGroup XNFS Version 3W, chapter 8 @@ -153,7 +153,7 @@ int nfs_mount(struct nfs_mount_request *info) .rpc_resp = &result, }; struct rpc_create_args args = { - .net = &init_net, + .net = info->net, .protocol = info->protocol, .address = info->sap, .addrsize = info->salen, @@ -225,7 +225,7 @@ void nfs_umount(const struct nfs_mount_request *info) .to_retries = 2, }; struct rpc_create_args args = { - .net = &init_net, + .net = info->net, .protocol = IPPROTO_UDP, .address = info->sap, .addrsize = info->salen, @@ -488,19 +488,19 @@ static struct rpc_procinfo mnt3_procedures[] = { }; -static struct rpc_version mnt_version1 = { +static const struct rpc_version mnt_version1 = { .number = 1, .nrprocs = ARRAY_SIZE(mnt_procedures), .procs = mnt_procedures, }; -static struct rpc_version mnt_version3 = { +static const struct rpc_version mnt_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(mnt3_procedures), .procs = mnt3_procedures, }; -static struct rpc_version *mnt_version[] = { +static const struct rpc_version *mnt_version[] = { NULL, &mnt_version1, NULL, @@ -509,7 +509,7 @@ static struct rpc_version *mnt_version[] = { static struct rpc_stat mnt_stats; -static struct rpc_program mnt_program = { +static const struct rpc_program mnt_program = { .name = "mount", .number = NFS_MNT_PROGRAM, .nrvers = ARRAY_SIZE(mnt_version), diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 8102391bb37..1807866bb3a 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -276,7 +276,10 @@ out: nfs_free_fattr(fattr); nfs_free_fhandle(fh); out_nofree: - dprintk("<-- nfs_follow_mountpoint() = %p\n", mnt); + if (IS_ERR(mnt)) + dprintk("<-- %s(): error %ld\n", __func__, PTR_ERR(mnt)); + else + dprintk("<-- %s() = %p\n", __func__, mnt); return mnt; } diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h new file mode 100644 index 00000000000..aa14ec303e9 --- /dev/null +++ b/fs/nfs/netns.h @@ -0,0 +1,27 @@ +#ifndef __NFS_NETNS_H__ +#define __NFS_NETNS_H__ + +#include <net/net_namespace.h> +#include <net/netns/generic.h> + +struct bl_dev_msg { + int32_t status; + uint32_t major, minor; +}; + +struct nfs_net { + struct cache_detail *nfs_dns_resolve; + struct rpc_pipe *bl_device_pipe; + struct bl_dev_msg bl_mount_reply; + wait_queue_head_t bl_wq; + struct list_head nfs_client_list; + struct list_head nfs_volume_list; +#ifdef CONFIG_NFS_V4 + struct idr cb_ident_idr; /* Protected by nfs_client_lock */ +#endif + spinlock_t nfs_client_lock; +}; + +extern int nfs_net_id; + +#endif diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 792cb13a430..1f56000fabb 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -1150,7 +1150,7 @@ struct rpc_procinfo nfs_procedures[] = { PROC(STATFS, fhandle, statfsres, 0), }; -struct rpc_version nfs_version2 = { +const struct rpc_version nfs_version2 = { .number = 2, .nrprocs = ARRAY_SIZE(nfs_procedures), .procs = nfs_procedures diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 7ef23979896..e4498dc351a 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -192,7 +192,7 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) .pages = pages, }; struct nfs3_getaclres res = { - 0 + NULL, }; struct rpc_message msg = { .rpc_argp = &args, diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 91943953a37..5242eae6711 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -428,6 +428,11 @@ nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; } +static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + rpc_call_start(task); +} + static int nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) { @@ -445,6 +450,11 @@ nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; } +static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + rpc_call_start(task); +} + static int nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, struct inode *new_dir) @@ -814,6 +824,11 @@ static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; } +static void nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + rpc_call_start(task); +} + static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs3_async_handle_jukebox(task, data->inode)) @@ -828,6 +843,11 @@ static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_messag msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; } +static void nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + rpc_call_start(task); +} + static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs3_async_handle_jukebox(task, data->inode)) @@ -864,9 +884,11 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .create = nfs3_proc_create, .remove = nfs3_proc_remove, .unlink_setup = nfs3_proc_unlink_setup, + .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare, .unlink_done = nfs3_proc_unlink_done, .rename = nfs3_proc_rename, .rename_setup = nfs3_proc_rename_setup, + .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare, .rename_done = nfs3_proc_rename_done, .link = nfs3_proc_link, .symlink = nfs3_proc_symlink, @@ -879,8 +901,10 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .pathconf = nfs3_proc_pathconf, .decode_dirent = nfs3_decode_dirent, .read_setup = nfs3_proc_read_setup, + .read_rpc_prepare = nfs3_proc_read_rpc_prepare, .read_done = nfs3_read_done, .write_setup = nfs3_proc_write_setup, + .write_rpc_prepare = nfs3_proc_write_rpc_prepare, .write_done = nfs3_write_done, .commit_setup = nfs3_proc_commit_setup, .commit_done = nfs3_commit_done, diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 183c6b123d0..a77cc9a3ce5 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -2461,7 +2461,7 @@ struct rpc_procinfo nfs3_procedures[] = { PROC(COMMIT, commit, commit, 5), }; -struct rpc_version nfs_version3 = { +const struct rpc_version nfs_version3 = { .number = 3, .nrprocs = ARRAY_SIZE(nfs3_procedures), .procs = nfs3_procedures @@ -2489,7 +2489,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = { }, }; -struct rpc_version nfsacl_version3 = { +const struct rpc_version nfsacl_version3 = { .number = 3, .nrprocs = sizeof(nfs3_acl_procedures)/ sizeof(nfs3_acl_procedures[0]), diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 4d7d0aedc10..97ecc863dd7 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -20,7 +20,6 @@ enum nfs4_client_state { NFS4CLNT_RECLAIM_REBOOT, NFS4CLNT_RECLAIM_NOGRACE, NFS4CLNT_DELEGRETURN, - NFS4CLNT_LAYOUTRECALL, NFS4CLNT_SESSION_RESET, NFS4CLNT_RECALL_SLOT, NFS4CLNT_LEASE_CONFIRM, @@ -44,7 +43,7 @@ struct nfs4_minor_version_ops { struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, int cache_reply); - int (*validate_stateid)(struct nfs_delegation *, + bool (*match_stateid)(const nfs4_stateid *, const nfs4_stateid *); int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); @@ -53,26 +52,25 @@ struct nfs4_minor_version_ops { const struct nfs4_state_maintenance_ops *state_renewal_ops; }; -/* - * struct rpc_sequence ensures that RPC calls are sent in the exact - * order that they appear on the list. - */ -struct rpc_sequence { - struct rpc_wait_queue wait; /* RPC call delay queue */ - spinlock_t lock; /* Protects the list */ - struct list_head list; /* Defines sequence of RPC calls */ +struct nfs_unique_id { + struct rb_node rb_node; + __u64 id; }; #define NFS_SEQID_CONFIRMED 1 struct nfs_seqid_counter { - struct rpc_sequence *sequence; + int owner_id; int flags; u32 counter; + spinlock_t lock; /* Protects the list */ + struct list_head list; /* Defines sequence of RPC calls */ + struct rpc_wait_queue wait; /* RPC call delay queue */ }; struct nfs_seqid { struct nfs_seqid_counter *sequence; struct list_head list; + struct rpc_task *task; }; static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) @@ -81,18 +79,12 @@ static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status seqid->flags |= NFS_SEQID_CONFIRMED; } -struct nfs_unique_id { - struct rb_node rb_node; - __u64 id; -}; - /* * NFS4 state_owners and lock_owners are simply labels for ordered * sequences of RPC calls. Their sole purpose is to provide once-only * semantics by allowing the server to identify replayed requests. */ struct nfs4_state_owner { - struct nfs_unique_id so_owner_id; struct nfs_server *so_server; struct list_head so_lru; unsigned long so_expires; @@ -105,7 +97,6 @@ struct nfs4_state_owner { unsigned long so_flags; struct list_head so_states; struct nfs_seqid_counter so_seqid; - struct rpc_sequence so_sequence; }; enum { @@ -146,8 +137,6 @@ struct nfs4_lock_state { #define NFS_LOCK_INITIALIZED 1 int ls_flags; struct nfs_seqid_counter ls_seqid; - struct rpc_sequence ls_sequence; - struct nfs_unique_id ls_id; nfs4_stateid ls_stateid; atomic_t ls_count; struct nfs4_lock_owner ls_owner; @@ -193,6 +182,7 @@ struct nfs4_exception { long timeout; int retry; struct nfs4_state *state; + struct inode *inode; }; struct nfs4_state_recovery_ops { @@ -224,7 +214,7 @@ extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, boo extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, struct nfs4_fs_locations *fs_locations, struct page *page); -extern void nfs4_release_lockowner(const struct nfs4_lock_state *); +extern int nfs4_release_lockowner(struct nfs4_lock_state *); extern const struct xattr_handler *nfs4_xattr_handlers[]; #if defined(CONFIG_NFS_V4_1) @@ -233,12 +223,13 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser return server->nfs_client->cl_session; } +extern bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy); extern int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task); + struct rpc_task *task); extern int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task); + struct rpc_task *task); extern void nfs4_destroy_session(struct nfs4_session *session); extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp); extern int nfs4_proc_create_session(struct nfs_client *); @@ -269,7 +260,7 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser static inline int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) + struct rpc_task *task) { return 0; } @@ -319,7 +310,7 @@ static inline void nfs4_schedule_session_recovery(struct nfs4_session *session) } #endif /* CONFIG_NFS_V4_1 */ -extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *); +extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); extern void nfs4_put_state_owner(struct nfs4_state_owner *); extern void nfs4_purge_state_owners(struct nfs_server *); extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); @@ -327,6 +318,8 @@ extern void nfs4_put_open_state(struct nfs4_state *); extern void nfs4_close_state(struct nfs4_state *, fmode_t); extern void nfs4_close_sync(struct nfs4_state *, fmode_t); extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); +extern void nfs_inode_find_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid); extern void nfs4_schedule_lease_recovery(struct nfs_client *); extern void nfs4_schedule_state_manager(struct nfs_client *); extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); @@ -337,7 +330,8 @@ extern void nfs41_handle_server_scope(struct nfs_client *, struct server_scope **); extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); -extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); +extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, + fmode_t, fl_owner_t, pid_t); extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); @@ -346,6 +340,8 @@ extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); extern void nfs_release_seqid(struct nfs_seqid *seqid); extern void nfs_free_seqid(struct nfs_seqid *seqid); +extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); + extern const nfs4_stateid zero_stateid; /* nfs4xdr.c */ @@ -357,6 +353,16 @@ struct nfs4_mount_data; extern struct svc_version nfs4_callback_version1; extern struct svc_version nfs4_callback_version4; +static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) +{ + memcpy(dst, src, sizeof(*dst)); +} + +static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) +{ + return memcmp(dst, src, sizeof(*dst)) == 0; +} + #else #define nfs4_close_state(a, b) do { } while (0) diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 71ec08617e2..634c0bcb4fd 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -33,7 +33,10 @@ #include <linux/nfs_page.h> #include <linux/module.h> +#include <linux/sunrpc/metrics.h> + #include "internal.h" +#include "delegation.h" #include "nfs4filelayout.h" #define NFSDBG_FACILITY NFSDBG_PNFS_LD @@ -84,12 +87,27 @@ static int filelayout_async_handle_error(struct rpc_task *task, struct nfs_client *clp, int *reset) { + struct nfs_server *mds_server = NFS_SERVER(state->inode); + struct nfs_client *mds_client = mds_server->nfs_client; + if (task->tk_status >= 0) return 0; - *reset = 0; switch (task->tk_status) { + /* MDS state errors */ + case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + nfs_remove_bad_delegation(state->inode); + case -NFS4ERR_OPENMODE: + nfs4_schedule_stateid_recovery(mds_server, state); + goto wait_on_recovery; + case -NFS4ERR_EXPIRED: + nfs4_schedule_stateid_recovery(mds_server, state); + nfs4_schedule_lease_recovery(mds_client); + goto wait_on_recovery; + /* DS session errors */ case -NFS4ERR_BADSESSION: case -NFS4ERR_BADSLOT: case -NFS4ERR_BAD_HIGH_SLOT: @@ -115,8 +133,14 @@ static int filelayout_async_handle_error(struct rpc_task *task, *reset = 1; break; } +out: task->tk_status = 0; return -EAGAIN; +wait_on_recovery: + rpc_sleep_on(&mds_client->cl_rpcwaitq, task, NULL); + if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0) + rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task); + goto out; } /* NFS_PROTO call done callback routines */ @@ -173,7 +197,7 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) if (nfs41_setup_sequence(rdata->ds_clp->cl_session, &rdata->args.seq_args, &rdata->res.seq_res, - 0, task)) + task)) return; rpc_call_start(task); @@ -189,10 +213,18 @@ static void filelayout_read_call_done(struct rpc_task *task, void *data) rdata->mds_ops->rpc_call_done(task, data); } +static void filelayout_read_count_stats(struct rpc_task *task, void *data) +{ + struct nfs_read_data *rdata = (struct nfs_read_data *)data; + + rpc_count_iostats(task, NFS_SERVER(rdata->inode)->client->cl_metrics); +} + static void filelayout_read_release(void *data) { struct nfs_read_data *rdata = (struct nfs_read_data *)data; + put_lseg(rdata->lseg); rdata->mds_ops->rpc_release(data); } @@ -254,7 +286,7 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data) if (nfs41_setup_sequence(wdata->ds_clp->cl_session, &wdata->args.seq_args, &wdata->res.seq_res, - 0, task)) + task)) return; rpc_call_start(task); @@ -268,10 +300,18 @@ static void filelayout_write_call_done(struct rpc_task *task, void *data) wdata->mds_ops->rpc_call_done(task, data); } +static void filelayout_write_count_stats(struct rpc_task *task, void *data) +{ + struct nfs_write_data *wdata = (struct nfs_write_data *)data; + + rpc_count_iostats(task, NFS_SERVER(wdata->inode)->client->cl_metrics); +} + static void filelayout_write_release(void *data) { struct nfs_write_data *wdata = (struct nfs_write_data *)data; + put_lseg(wdata->lseg); wdata->mds_ops->rpc_release(data); } @@ -282,24 +322,28 @@ static void filelayout_commit_release(void *data) nfs_commit_release_pages(wdata); if (atomic_dec_and_test(&NFS_I(wdata->inode)->commits_outstanding)) nfs_commit_clear_lock(NFS_I(wdata->inode)); + put_lseg(wdata->lseg); nfs_commitdata_release(wdata); } -struct rpc_call_ops filelayout_read_call_ops = { +static const struct rpc_call_ops filelayout_read_call_ops = { .rpc_call_prepare = filelayout_read_prepare, .rpc_call_done = filelayout_read_call_done, + .rpc_count_stats = filelayout_read_count_stats, .rpc_release = filelayout_read_release, }; -struct rpc_call_ops filelayout_write_call_ops = { +static const struct rpc_call_ops filelayout_write_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, + .rpc_count_stats = filelayout_write_count_stats, .rpc_release = filelayout_write_release, }; -struct rpc_call_ops filelayout_commit_call_ops = { +static const struct rpc_call_ops filelayout_commit_call_ops = { .rpc_call_prepare = filelayout_write_prepare, .rpc_call_done = filelayout_write_call_done, + .rpc_count_stats = filelayout_write_count_stats, .rpc_release = filelayout_commit_release, }; @@ -367,7 +411,8 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync) idx = nfs4_fl_calc_ds_index(lseg, j); ds = nfs4_fl_prepare_ds(lseg, idx); if (!ds) { - printk(KERN_ERR "%s: prepare_ds failed, use MDS\n", __func__); + printk(KERN_ERR "NFS: %s: prepare_ds failed, use MDS\n", + __func__); set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags); set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags); return PNFS_NOT_ATTEMPTED; @@ -575,7 +620,7 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo, goto out_err_free; fl->fh_array[i]->size = be32_to_cpup(p++); if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) { - printk(KERN_ERR "Too big fh %d received %d\n", + printk(KERN_ERR "NFS: Too big fh %d received %d\n", i, fl->fh_array[i]->size); goto out_err_free; } @@ -640,14 +685,16 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, int size = (fl->stripe_type == STRIPE_SPARSE) ? fl->dsaddr->ds_num : fl->dsaddr->stripe_count; - fl->commit_buckets = kcalloc(size, sizeof(struct list_head), gfp_flags); + fl->commit_buckets = kcalloc(size, sizeof(struct nfs4_fl_commit_bucket), gfp_flags); if (!fl->commit_buckets) { filelayout_free_lseg(&fl->generic_hdr); return NULL; } fl->number_of_buckets = size; - for (i = 0; i < size; i++) - INIT_LIST_HEAD(&fl->commit_buckets[i]); + for (i = 0; i < size; i++) { + INIT_LIST_HEAD(&fl->commit_buckets[i].written); + INIT_LIST_HEAD(&fl->commit_buckets[i].committing); + } } return &fl->generic_hdr; } @@ -679,7 +726,7 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, return (p_stripe == r_stripe); } -void +static void filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { @@ -696,7 +743,7 @@ filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, nfs_pageio_reset_read_mds(pgio); } -void +static void filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { @@ -725,11 +772,6 @@ static const struct nfs_pageio_ops filelayout_pg_write_ops = { .pg_doio = pnfs_generic_pg_writepages, }; -static bool filelayout_mark_pnfs_commit(struct pnfs_layout_segment *lseg) -{ - return !FILELAYOUT_LSEG(lseg)->commit_through_mds; -} - static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) { if (fl->stripe_type == STRIPE_SPARSE) @@ -738,13 +780,49 @@ static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) return j; } -struct list_head *filelayout_choose_commit_list(struct nfs_page *req) +/* The generic layer is about to remove the req from the commit list. + * If this will make the bucket empty, it will need to put the lseg reference. + */ +static void +filelayout_clear_request_commit(struct nfs_page *req) +{ + struct pnfs_layout_segment *freeme = NULL; + struct inode *inode = req->wb_context->dentry->d_inode; + + spin_lock(&inode->i_lock); + if (!test_and_clear_bit(PG_COMMIT_TO_DS, &req->wb_flags)) + goto out; + if (list_is_singular(&req->wb_list)) { + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layout_segment *lseg; + + /* From here we can find the bucket, but for the moment, + * since there is only one relevant lseg... + */ + list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) { + if (lseg->pls_range.iomode == IOMODE_RW) { + freeme = lseg; + break; + } + } + } +out: + nfs_request_remove_commit_list(req); + spin_unlock(&inode->i_lock); + put_lseg(freeme); +} + +static struct list_head * +filelayout_choose_commit_list(struct nfs_page *req, + struct pnfs_layout_segment *lseg) { - struct pnfs_layout_segment *lseg = req->wb_commit_lseg; struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); u32 i, j; struct list_head *list; + if (fl->commit_through_mds) + return &NFS_I(req->wb_context->dentry->d_inode)->commit_list; + /* Note that we are calling nfs4_fl_calc_j_index on each page * that ends up being committed to a data server. An attractive * alternative is to add a field to nfs_write_data and nfs_page @@ -754,14 +832,30 @@ struct list_head *filelayout_choose_commit_list(struct nfs_page *req) j = nfs4_fl_calc_j_index(lseg, (loff_t)req->wb_index << PAGE_CACHE_SHIFT); i = select_bucket_index(fl, j); - list = &fl->commit_buckets[i]; + list = &fl->commit_buckets[i].written; if (list_empty(list)) { - /* Non-empty buckets hold a reference on the lseg */ + /* Non-empty buckets hold a reference on the lseg. That ref + * is normally transferred to the COMMIT call and released + * there. It could also be released if the last req is pulled + * off due to a rewrite, in which case it will be done in + * filelayout_remove_commit_req + */ get_lseg(lseg); } + set_bit(PG_COMMIT_TO_DS, &req->wb_flags); return list; } +static void +filelayout_mark_request_commit(struct nfs_page *req, + struct pnfs_layout_segment *lseg) +{ + struct list_head *list; + + list = filelayout_choose_commit_list(req, lseg); + nfs_request_add_commit_list(req, list); +} + static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i) { struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg); @@ -797,11 +891,12 @@ static int filelayout_initiate_commit(struct nfs_write_data *data, int how) idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); ds = nfs4_fl_prepare_ds(lseg, idx); if (!ds) { - printk(KERN_ERR "%s: prepare_ds failed, use MDS\n", __func__); + printk(KERN_ERR "NFS: %s: prepare_ds failed, use MDS\n", + __func__); set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags); set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags); prepare_to_resend_writes(data); - data->mds_ops->rpc_release(data); + filelayout_commit_release(data); return -EAGAIN; } dprintk("%s ino %lu, how %d\n", __func__, data->inode->i_ino, how); @@ -817,24 +912,87 @@ static int filelayout_initiate_commit(struct nfs_write_data *data, int how) /* * This is only useful while we are using whole file layouts. */ -static struct pnfs_layout_segment *find_only_write_lseg(struct inode *inode) +static struct pnfs_layout_segment * +find_only_write_lseg_locked(struct inode *inode) { - struct pnfs_layout_segment *lseg, *rv = NULL; + struct pnfs_layout_segment *lseg; - spin_lock(&inode->i_lock); list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) if (lseg->pls_range.iomode == IOMODE_RW) - rv = get_lseg(lseg); + return lseg; + return NULL; +} + +static struct pnfs_layout_segment *find_only_write_lseg(struct inode *inode) +{ + struct pnfs_layout_segment *rv; + + spin_lock(&inode->i_lock); + rv = find_only_write_lseg_locked(inode); + if (rv) + get_lseg(rv); spin_unlock(&inode->i_lock); return rv; } -static int alloc_ds_commits(struct inode *inode, struct list_head *list) +static int +filelayout_scan_ds_commit_list(struct nfs4_fl_commit_bucket *bucket, int max, + spinlock_t *lock) +{ + struct list_head *src = &bucket->written; + struct list_head *dst = &bucket->committing; + struct nfs_page *req, *tmp; + int ret = 0; + + list_for_each_entry_safe(req, tmp, src, wb_list) { + if (!nfs_lock_request(req)) + continue; + if (cond_resched_lock(lock)) + list_safe_reset_next(req, tmp, wb_list); + nfs_request_remove_commit_list(req); + clear_bit(PG_COMMIT_TO_DS, &req->wb_flags); + nfs_list_add_request(req, dst); + ret++; + if (ret == max) + break; + } + return ret; +} + +/* Move reqs from written to committing lists, returning count of number moved. + * Note called with i_lock held. + */ +static int filelayout_scan_commit_lists(struct inode *inode, int max, + spinlock_t *lock) +{ + struct pnfs_layout_segment *lseg; + struct nfs4_filelayout_segment *fl; + int i, rv = 0, cnt; + + lseg = find_only_write_lseg_locked(inode); + if (!lseg) + goto out_done; + fl = FILELAYOUT_LSEG(lseg); + if (fl->commit_through_mds) + goto out_done; + for (i = 0; i < fl->number_of_buckets && max != 0; i++) { + cnt = filelayout_scan_ds_commit_list(&fl->commit_buckets[i], + max, lock); + max -= cnt; + rv += cnt; + } +out_done: + return rv; +} + +static unsigned int +alloc_ds_commits(struct inode *inode, struct list_head *list) { struct pnfs_layout_segment *lseg; struct nfs4_filelayout_segment *fl; struct nfs_write_data *data; int i, j; + unsigned int nreq = 0; /* Won't need this when non-whole file layout segments are supported * instead we will use a pnfs_layout_hdr structure */ @@ -843,28 +1001,27 @@ static int alloc_ds_commits(struct inode *inode, struct list_head *list) return 0; fl = FILELAYOUT_LSEG(lseg); for (i = 0; i < fl->number_of_buckets; i++) { - if (list_empty(&fl->commit_buckets[i])) + if (list_empty(&fl->commit_buckets[i].committing)) continue; data = nfs_commitdata_alloc(); if (!data) - goto out_bad; + break; data->ds_commit_index = i; data->lseg = lseg; list_add(&data->pages, list); + nreq++; } - put_lseg(lseg); - return 0; -out_bad: + /* Clean up on error */ for (j = i; j < fl->number_of_buckets; j++) { - if (list_empty(&fl->commit_buckets[i])) + if (list_empty(&fl->commit_buckets[i].committing)) continue; - nfs_retry_commit(&fl->commit_buckets[i], lseg); + nfs_retry_commit(&fl->commit_buckets[i].committing, lseg); put_lseg(lseg); /* associated with emptying bucket */ } put_lseg(lseg); /* Caller will clean up entries put on list */ - return -ENOMEM; + return nreq; } /* This follows nfs_commit_list pretty closely */ @@ -874,40 +1031,40 @@ filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, { struct nfs_write_data *data, *tmp; LIST_HEAD(list); + unsigned int nreq = 0; if (!list_empty(mds_pages)) { data = nfs_commitdata_alloc(); - if (!data) - goto out_bad; - data->lseg = NULL; - list_add(&data->pages, &list); + if (data != NULL) { + data->lseg = NULL; + list_add(&data->pages, &list); + nreq++; + } else + nfs_retry_commit(mds_pages, NULL); } - if (alloc_ds_commits(inode, &list)) - goto out_bad; + nreq += alloc_ds_commits(inode, &list); + + if (nreq == 0) { + nfs_commit_clear_lock(NFS_I(inode)); + goto out; + } + + atomic_add(nreq, &NFS_I(inode)->commits_outstanding); list_for_each_entry_safe(data, tmp, &list, pages) { list_del_init(&data->pages); - atomic_inc(&NFS_I(inode)->commits_outstanding); if (!data->lseg) { nfs_init_commit(data, mds_pages, NULL); nfs_initiate_commit(data, NFS_CLIENT(inode), data->mds_ops, how); } else { - nfs_init_commit(data, &FILELAYOUT_LSEG(data->lseg)->commit_buckets[data->ds_commit_index], data->lseg); + nfs_init_commit(data, &FILELAYOUT_LSEG(data->lseg)->commit_buckets[data->ds_commit_index].committing, data->lseg); filelayout_initiate_commit(data, how); } } - return 0; - out_bad: - list_for_each_entry_safe(data, tmp, &list, pages) { - nfs_retry_commit(&data->pages, data->lseg); - list_del_init(&data->pages); - nfs_commit_free(data); - } - nfs_retry_commit(mds_pages, NULL); - nfs_commit_clear_lock(NFS_I(inode)); - return -ENOMEM; +out: + return PNFS_ATTEMPTED; } static void @@ -924,8 +1081,9 @@ static struct pnfs_layoutdriver_type filelayout_type = { .free_lseg = filelayout_free_lseg, .pg_read_ops = &filelayout_pg_read_ops, .pg_write_ops = &filelayout_pg_write_ops, - .mark_pnfs_commit = filelayout_mark_pnfs_commit, - .choose_commit_list = filelayout_choose_commit_list, + .mark_request_commit = filelayout_mark_request_commit, + .clear_request_commit = filelayout_clear_request_commit, + .scan_commit_lists = filelayout_scan_commit_lists, .commit_pagelist = filelayout_commit_pagelist, .read_pagelist = filelayout_read_pagelist, .write_pagelist = filelayout_write_pagelist, diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h index 2e42284253f..21190bb1f5e 100644 --- a/fs/nfs/nfs4filelayout.h +++ b/fs/nfs/nfs4filelayout.h @@ -74,6 +74,11 @@ struct nfs4_file_layout_dsaddr { struct nfs4_pnfs_ds *ds_list[1]; }; +struct nfs4_fl_commit_bucket { + struct list_head written; + struct list_head committing; +}; + struct nfs4_filelayout_segment { struct pnfs_layout_segment generic_hdr; u32 stripe_type; @@ -84,7 +89,7 @@ struct nfs4_filelayout_segment { struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */ unsigned int num_fh; struct nfs_fh **fh_array; - struct list_head *commit_buckets; /* Sort commits to ds */ + struct nfs4_fl_commit_bucket *commit_buckets; /* Sort commits to ds */ int number_of_buckets; }; diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index 8ae91908f5a..a866bbd2890 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -45,7 +45,7 @@ * - incremented when a device id maps a data server already in the cache. * - decremented when deviceid is removed from the cache. */ -DEFINE_SPINLOCK(nfs4_ds_cache_lock); +static DEFINE_SPINLOCK(nfs4_ds_cache_lock); static LIST_HEAD(nfs4_data_server_cache); /* Debug routines */ @@ -108,58 +108,40 @@ same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) return false; } -/* - * Lookup DS by addresses. The first matching address returns true. - * nfs4_ds_cache_lock is held - */ -static struct nfs4_pnfs_ds * -_data_server_lookup_locked(struct list_head *dsaddrs) +static bool +_same_data_server_addrs_locked(const struct list_head *dsaddrs1, + const struct list_head *dsaddrs2) { - struct nfs4_pnfs_ds *ds; struct nfs4_pnfs_ds_addr *da1, *da2; - list_for_each_entry(da1, dsaddrs, da_node) { - list_for_each_entry(ds, &nfs4_data_server_cache, ds_node) { - list_for_each_entry(da2, &ds->ds_addrs, da_node) { - if (same_sockaddr( - (struct sockaddr *)&da1->da_addr, - (struct sockaddr *)&da2->da_addr)) - return ds; - } - } + /* step through both lists, comparing as we go */ + for (da1 = list_first_entry(dsaddrs1, typeof(*da1), da_node), + da2 = list_first_entry(dsaddrs2, typeof(*da2), da_node); + da1 != NULL && da2 != NULL; + da1 = list_entry(da1->da_node.next, typeof(*da1), da_node), + da2 = list_entry(da2->da_node.next, typeof(*da2), da_node)) { + if (!same_sockaddr((struct sockaddr *)&da1->da_addr, + (struct sockaddr *)&da2->da_addr)) + return false; } - return NULL; + if (da1 == NULL && da2 == NULL) + return true; + + return false; } /* - * Compare two lists of addresses. + * Lookup DS by addresses. nfs4_ds_cache_lock is held */ -static bool -_data_server_match_all_addrs_locked(struct list_head *dsaddrs1, - struct list_head *dsaddrs2) +static struct nfs4_pnfs_ds * +_data_server_lookup_locked(const struct list_head *dsaddrs) { - struct nfs4_pnfs_ds_addr *da1, *da2; - size_t count1 = 0, - count2 = 0; - - list_for_each_entry(da1, dsaddrs1, da_node) - count1++; - - list_for_each_entry(da2, dsaddrs2, da_node) { - bool found = false; - count2++; - list_for_each_entry(da1, dsaddrs1, da_node) { - if (same_sockaddr((struct sockaddr *)&da1->da_addr, - (struct sockaddr *)&da2->da_addr)) { - found = true; - break; - } - } - if (!found) - return false; - } + struct nfs4_pnfs_ds *ds; - return (count1 == count2); + list_for_each_entry(ds, &nfs4_data_server_cache, ds_node) + if (_same_data_server_addrs_locked(&ds->ds_addrs, dsaddrs)) + return ds; + return NULL; } /* @@ -356,11 +338,6 @@ nfs4_pnfs_ds_add(struct list_head *dsaddrs, gfp_t gfp_flags) dprintk("%s add new data server %s\n", __func__, ds->ds_remotestr); } else { - if (!_data_server_match_all_addrs_locked(&tmp_ds->ds_addrs, - dsaddrs)) { - dprintk("%s: multipath address mismatch: %s != %s", - __func__, tmp_ds->ds_remotestr, remotestr); - } kfree(remotestr); kfree(ds); atomic_inc(&tmp_ds->ds_count); @@ -378,7 +355,7 @@ out: * Currently only supports ipv4, ipv6 and one multi-path address. */ static struct nfs4_pnfs_ds_addr * -decode_ds_addr(struct xdr_stream *streamp, gfp_t gfp_flags) +decode_ds_addr(struct net *net, struct xdr_stream *streamp, gfp_t gfp_flags) { struct nfs4_pnfs_ds_addr *da = NULL; char *buf, *portstr; @@ -457,7 +434,7 @@ decode_ds_addr(struct xdr_stream *streamp, gfp_t gfp_flags) INIT_LIST_HEAD(&da->da_node); - if (!rpc_pton(buf, portstr-buf, (struct sockaddr *)&da->da_addr, + if (!rpc_pton(net, buf, portstr-buf, (struct sockaddr *)&da->da_addr, sizeof(da->da_addr))) { dprintk("%s: error parsing address %s\n", __func__, buf); goto out_free_da; @@ -554,7 +531,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) cnt = be32_to_cpup(p); dprintk("%s stripe count %d\n", __func__, cnt); if (cnt > NFS4_PNFS_MAX_STRIPE_CNT) { - printk(KERN_WARNING "%s: stripe count %d greater than " + printk(KERN_WARNING "NFS: %s: stripe count %d greater than " "supported maximum %d\n", __func__, cnt, NFS4_PNFS_MAX_STRIPE_CNT); goto out_err_free_scratch; @@ -585,7 +562,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) num = be32_to_cpup(p); dprintk("%s ds_num %u\n", __func__, num); if (num > NFS4_PNFS_MAX_MULTI_CNT) { - printk(KERN_WARNING "%s: multipath count %d greater than " + printk(KERN_WARNING "NFS: %s: multipath count %d greater than " "supported maximum %d\n", __func__, num, NFS4_PNFS_MAX_MULTI_CNT); goto out_err_free_stripe_indices; @@ -593,7 +570,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) /* validate stripe indices are all < num */ if (max_stripe_index >= num) { - printk(KERN_WARNING "%s: stripe index %u >= num ds %u\n", + printk(KERN_WARNING "NFS: %s: stripe index %u >= num ds %u\n", __func__, max_stripe_index, num); goto out_err_free_stripe_indices; } @@ -625,7 +602,8 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) mp_count = be32_to_cpup(p); /* multipath count */ for (j = 0; j < mp_count; j++) { - da = decode_ds_addr(&stream, gfp_flags); + da = decode_ds_addr(NFS_SERVER(ino)->nfs_client->net, + &stream, gfp_flags); if (da) list_add_tail(&da->da_node, &dsaddrs); } @@ -686,7 +664,7 @@ decode_and_add_device(struct inode *inode, struct pnfs_device *dev, gfp_t gfp_fl new = decode_device(inode, dev, gfp_flags); if (!new) { - printk(KERN_WARNING "%s: Could not decode or add device\n", + printk(KERN_WARNING "NFS: %s: Could not decode or add device\n", __func__); return NULL; } @@ -835,7 +813,7 @@ nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx]; if (ds == NULL) { - printk(KERN_ERR "%s: No data server for offset index %d\n", + printk(KERN_ERR "NFS: %s: No data server for offset index %d\n", __func__, ds_idx); return NULL; } diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index bb80c49b653..9c8eca315f4 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -94,13 +94,14 @@ static int nfs4_validate_fspath(struct dentry *dentry, } static size_t nfs_parse_server_name(char *string, size_t len, - struct sockaddr *sa, size_t salen) + struct sockaddr *sa, size_t salen, struct nfs_server *server) { + struct net *net = rpc_net_ns(server->client); ssize_t ret; - ret = rpc_pton(string, len, sa, salen); + ret = rpc_pton(net, string, len, sa, salen); if (ret == 0) { - ret = nfs_dns_resolve_name(string, len, sa, salen); + ret = nfs_dns_resolve_name(net, string, len, sa, salen); if (ret < 0) ret = 0; } @@ -137,7 +138,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, continue; mountdata->addrlen = nfs_parse_server_name(buf->data, buf->len, - mountdata->addr, addr_bufsize); + mountdata->addr, addr_bufsize, + NFS_SB(mountdata->sb)); if (mountdata->addrlen == 0) continue; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f0c849c98fe..e809d2305eb 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -72,18 +72,21 @@ #define NFS4_MAX_LOOP_ON_RECOVER (10) +static unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; + struct nfs4_opendata; static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); +static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_fattr *fattr, struct iattr *sattr, struct nfs4_state *state); #ifdef CONFIG_NFS_V4_1 -static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *); -static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *); +static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); +static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); #endif /* Prevent leaks of NFSv4 errors into userland */ static int nfs4_map_errors(int err) @@ -193,7 +196,7 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent * when talking to the server, we always send cookie 0 * instead of 1 or 2. */ - start = p = kmap_atomic(*readdir->pages, KM_USER0); + start = p = kmap_atomic(*readdir->pages); if (cookie == 0) { *p++ = xdr_one; /* next */ @@ -221,7 +224,7 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent readdir->pgbase = (char *)p - (char *)start; readdir->count -= readdir->pgbase; - kunmap_atomic(start, KM_USER0); + kunmap_atomic(start); } static int nfs4_wait_clnt_recover(struct nfs_client *clp) @@ -259,15 +262,28 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; + struct inode *inode = exception->inode; int ret = errorcode; exception->retry = 0; switch(errorcode) { case 0: return 0; + case -NFS4ERR_OPENMODE: + if (nfs_have_delegation(inode, FMODE_READ)) { + nfs_inode_return_delegation(inode); + exception->retry = 1; + return 0; + } + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(server, state); + goto wait_on_recovery; + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: - case -NFS4ERR_OPENMODE: + if (state != NULL) + nfs_remove_bad_delegation(state->inode); if (state == NULL) break; nfs4_schedule_stateid_recovery(server, state); @@ -360,16 +376,14 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp * When updating highest_used_slotid there may be "holes" in the bitmap * so we need to scan down from highest_used_slotid to 0 looking for the now * highest slotid in use. - * If none found, highest_used_slotid is set to -1. + * If none found, highest_used_slotid is set to NFS4_NO_SLOT. * * Must be called while holding tbl->slot_tbl_lock */ static void -nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) +nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) { - int slotid = free_slotid; - - BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); + BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); /* clear used bit in bitmap */ __clear_bit(slotid, tbl->used_slots); @@ -379,10 +393,16 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) if (slotid < tbl->max_slots) tbl->highest_used_slotid = slotid; else - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; } - dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, - free_slotid, tbl->highest_used_slotid); + dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, + slotid, tbl->highest_used_slotid); +} + +bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) +{ + rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); + return true; } /* @@ -390,16 +410,13 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) */ static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) { - struct rpc_task *task; - if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { - task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); - if (task) - rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); + rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, + nfs4_set_task_privileged, NULL); return; } - if (ses->fc_slot_table.highest_used_slotid != -1) + if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) return; dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); @@ -412,7 +429,7 @@ static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) void nfs4_check_drain_bc_complete(struct nfs4_session *ses) { if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || - ses->bc_slot_table.highest_used_slotid != -1) + ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) return; dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); complete(&ses->bc_slot_table.complete); @@ -507,25 +524,25 @@ static int nfs4_sequence_done(struct rpc_task *task, * nfs4_find_slot looks for an unset bit in the used_slots bitmap. * If found, we mark the slot as used, update the highest_used_slotid, * and respectively set up the sequence operation args. - * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. + * The slot number is returned if found, or NFS4_NO_SLOT otherwise. * * Note: must be called with under the slot_tbl_lock. */ -static u8 +static u32 nfs4_find_slot(struct nfs4_slot_table *tbl) { - int slotid; - u8 ret_id = NFS4_MAX_SLOT_TABLE; - BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); + u32 slotid; + u32 ret_id = NFS4_NO_SLOT; - dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", + dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", __func__, tbl->used_slots[0], tbl->highest_used_slotid, tbl->max_slots); slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); if (slotid >= tbl->max_slots) goto out; __set_bit(slotid, tbl->used_slots); - if (slotid > tbl->highest_used_slotid) + if (slotid > tbl->highest_used_slotid || + tbl->highest_used_slotid == NFS4_NO_SLOT) tbl->highest_used_slotid = slotid; ret_id = slotid; out: @@ -534,15 +551,25 @@ out: return ret_id; } +static void nfs41_init_sequence(struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, int cache_reply) +{ + args->sa_session = NULL; + args->sa_cache_this = 0; + if (cache_reply) + args->sa_cache_this = 1; + res->sr_session = NULL; + res->sr_slot = NULL; +} + int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) { struct nfs4_slot *slot; struct nfs4_slot_table *tbl; - u8 slotid; + u32 slotid; dprintk("--> %s\n", __func__); /* slot already allocated? */ @@ -570,7 +597,7 @@ int nfs41_setup_sequence(struct nfs4_session *session, } slotid = nfs4_find_slot(tbl); - if (slotid == NFS4_MAX_SLOT_TABLE) { + if (slotid == NFS4_NO_SLOT) { rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); spin_unlock(&tbl->slot_tbl_lock); dprintk("<-- %s: no free slots\n", __func__); @@ -582,7 +609,6 @@ int nfs41_setup_sequence(struct nfs4_session *session, slot = tbl->slots + slotid; args->sa_session = session; args->sa_slotid = slotid; - args->sa_cache_this = cache_reply; dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); @@ -602,24 +628,19 @@ EXPORT_SYMBOL_GPL(nfs41_setup_sequence); int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, struct rpc_task *task) { struct nfs4_session *session = nfs4_get_session(server); int ret = 0; - if (session == NULL) { - args->sa_session = NULL; - res->sr_session = NULL; + if (session == NULL) goto out; - } dprintk("--> %s clp %p session %p sr_slot %td\n", __func__, session->clp, session, res->sr_slot ? res->sr_slot - session->fc_slot_table.slots : -1); - ret = nfs41_setup_sequence(session, args, res, cache_reply, - task); + ret = nfs41_setup_sequence(session, args, res, task); out: dprintk("<-- %s status=%d\n", __func__, ret); return ret; @@ -629,7 +650,6 @@ struct nfs41_call_sync_data { const struct nfs_server *seq_server; struct nfs4_sequence_args *seq_args; struct nfs4_sequence_res *seq_res; - int cache_reply; }; static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) @@ -639,7 +659,7 @@ static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); if (nfs4_setup_sequence(data->seq_server, data->seq_args, - data->seq_res, data->cache_reply, task)) + data->seq_res, task)) return; rpc_call_start(task); } @@ -657,12 +677,12 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) nfs41_sequence_done(task, data->seq_res); } -struct rpc_call_ops nfs41_call_sync_ops = { +static const struct rpc_call_ops nfs41_call_sync_ops = { .rpc_call_prepare = nfs41_call_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; -struct rpc_call_ops nfs41_call_priv_sync_ops = { +static const struct rpc_call_ops nfs41_call_priv_sync_ops = { .rpc_call_prepare = nfs41_call_priv_sync_prepare, .rpc_call_done = nfs41_call_sync_done, }; @@ -672,7 +692,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, struct rpc_message *msg, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - int cache_reply, int privileged) { int ret; @@ -681,7 +700,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, .seq_server = server, .seq_args = args, .seq_res = res, - .cache_reply = cache_reply, }; struct rpc_task_setup task_setup = { .rpc_client = clnt, @@ -690,7 +708,6 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, .callback_data = &data }; - res->sr_slot = NULL; if (privileged) task_setup.callback_ops = &nfs41_call_priv_sync_ops; task = rpc_run_task(&task_setup); @@ -710,10 +727,17 @@ int _nfs4_call_sync_session(struct rpc_clnt *clnt, struct nfs4_sequence_res *res, int cache_reply) { - return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); + nfs41_init_sequence(args, res, cache_reply); + return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); } #else +static inline +void nfs41_init_sequence(struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, int cache_reply) +{ +} + static int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { @@ -728,7 +752,7 @@ int _nfs4_call_sync(struct rpc_clnt *clnt, struct nfs4_sequence_res *res, int cache_reply) { - args->sa_session = res->sr_session = NULL; + nfs41_init_sequence(args, res, cache_reply); return rpc_call_sync(clnt, msg, 0); } @@ -815,20 +839,22 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); p->o_arg.clientid = server->nfs_client->cl_clientid; - p->o_arg.id = sp->so_owner_id.id; + p->o_arg.id = sp->so_seqid.owner_id; p->o_arg.name = &dentry->d_name; p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; p->o_arg.dir_bitmask = server->cache_consistency_bitmask; p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; - if (flags & O_CREAT) { - u32 *s; + if (attrs != NULL && attrs->ia_valid != 0) { + __be32 verf[2]; p->o_arg.u.attrs = &p->attrs; memcpy(&p->attrs, attrs, sizeof(p->attrs)); - s = (u32 *) p->o_arg.u.verifier.data; - s[0] = jiffies; - s[1] = current->pid; + + verf[0] = jiffies; + verf[1] = current->pid; + memcpy(p->o_arg.u.verifier.data, verf, + sizeof(p->o_arg.u.verifier.data)); } p->c_arg.fh = &p->o_res.fh; p->c_arg.stateid = &p->o_res.stateid; @@ -878,7 +904,7 @@ static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode { int ret = 0; - if (open_mode & O_EXCL) + if (open_mode & (O_EXCL|O_TRUNC)) goto out; switch (mode & (FMODE_READ|FMODE_WRITE)) { case FMODE_READ: @@ -927,8 +953,8 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) { if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); - memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); + nfs4_stateid_copy(&state->stateid, stateid); + nfs4_stateid_copy(&state->open_stateid, stateid); switch (fmode) { case FMODE_READ: set_bit(NFS_O_RDONLY_STATE, &state->flags); @@ -956,7 +982,7 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s */ write_seqlock(&state->seqlock); if (deleg_stateid != NULL) { - memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); + nfs4_stateid_copy(&state->stateid, deleg_stateid); set_bit(NFS_DELEGATED_STATE, &state->flags); } if (open_stateid != NULL) @@ -987,7 +1013,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat if (delegation == NULL) delegation = &deleg_cur->stateid; - else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) + else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) goto no_delegation_unlock; nfs_mark_delegation_referenced(deleg_cur); @@ -1026,7 +1052,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) struct nfs4_state *state = opendata->state; struct nfs_inode *nfsi = NFS_I(state->inode); struct nfs_delegation *delegation; - int open_mode = opendata->o_arg.open_flags & O_EXCL; + int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); fmode_t fmode = opendata->o_arg.fmode; nfs4_stateid stateid; int ret = -EAGAIN; @@ -1048,7 +1074,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) break; } /* Save the delegation */ - memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); + nfs4_stateid_copy(&stateid, &delegation->stateid); rcu_read_unlock(); ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); if (ret != 0) @@ -1090,6 +1116,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data if (state == NULL) goto err_put_inode; if (data->o_res.delegation_type != 0) { + struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; int delegation_flags = 0; rcu_read_lock(); @@ -1101,7 +1128,7 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data pr_err_ratelimited("NFS: Broken NFSv4 server %s is " "returning a delegation for " "OPEN(CLAIM_DELEGATE_CUR)\n", - NFS_CLIENT(inode)->cl_server); + clp->cl_hostname); } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) nfs_inode_set_delegation(state->inode, data->owner->so_cred, @@ -1210,10 +1237,10 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * * Check if we need to update the current stateid. */ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && - memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { + !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { write_seqlock(&state->seqlock); if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); + nfs4_stateid_copy(&state->stateid, &state->open_stateid); write_sequnlock(&state->seqlock); } return 0; @@ -1282,8 +1309,7 @@ static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs if (IS_ERR(opendata)) return PTR_ERR(opendata); opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; - memcpy(opendata->o_arg.u.delegation.data, stateid->data, - sizeof(opendata->o_arg.u.delegation.data)); + nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); ret = nfs4_open_recover(opendata, state); nfs4_opendata_put(opendata); return ret; @@ -1319,8 +1345,11 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state * The show must go on: exit, but mark the * stateid as needing recovery. */ + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: + nfs_inode_find_state_and_recover(state->inode, + stateid); nfs4_schedule_stateid_recovery(server, state); case -EKEYEXPIRED: /* @@ -1345,8 +1374,7 @@ static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) data->rpc_status = task->tk_status; if (data->rpc_status == 0) { - memcpy(data->o_res.stateid.data, data->c_res.stateid.data, - sizeof(data->o_res.stateid.data)); + nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); nfs_confirm_seqid(&data->owner->so_seqid, 0); renew_lease(data->o_res.server, data->timestamp); data->rpc_done = 1; @@ -1440,7 +1468,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) rcu_read_unlock(); } /* Update sequence id. */ - data->o_arg.id = sp->so_owner_id.id; + data->o_arg.id = sp->so_seqid.owner_id; data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; @@ -1449,7 +1477,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) data->timestamp = jiffies; if (nfs4_setup_sequence(data->o_arg.server, &data->o_arg.seq_args, - &data->o_res.seq_res, 1, task)) + &data->o_res.seq_res, task)) return; rpc_call_start(task); return; @@ -1551,6 +1579,7 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) }; int status; + nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); kref_get(&data->kref); data->rpc_done = 0; data->rpc_status = 0; @@ -1712,15 +1741,32 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta } #if defined(CONFIG_NFS_V4_1) -static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) +static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) { - int status; + int status = NFS_OK; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, state); - if (status == NFS_OK) - return 0; - nfs41_free_stateid(server, state); + if (state->flags & flags) { + status = nfs41_test_stateid(server, stateid); + if (status != NFS_OK) { + nfs41_free_stateid(server, stateid); + state->flags &= ~flags; + } + } + return status; +} + +static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) +{ + int deleg_status, open_status; + int deleg_flags = 1 << NFS_DELEGATED_STATE; + int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); + + deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); + open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); + + if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) + return NFS_OK; return nfs4_open_expired(sp, state); } #endif @@ -1754,7 +1800,8 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode /* Protect against reboot recovery conflicts */ status = -ENOMEM; - if (!(sp = nfs4_get_state_owner(server, cred))) { + sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); + if (sp == NULL) { dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); goto out_err; } @@ -1829,7 +1876,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, * the user though... */ if (status == -NFS4ERR_BAD_SEQID) { - printk(KERN_WARNING "NFS: v4 server %s " + pr_warn_ratelimited("NFS: v4 server %s " " returned a bad sequence-id error!\n", NFS_SERVER(dir)->nfs_client->cl_hostname); exception.retry = 1; @@ -1882,12 +1929,14 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, nfs_fattr_init(fattr); - if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { + if (state != NULL) { + nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, + current->files, current->tgid); + } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, + FMODE_WRITE)) { /* Use that stateid */ - } else if (state != NULL) { - nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); } else - memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); + nfs4_stateid_copy(&arg.stateid, &zero_stateid); status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); if (status == 0 && state != NULL) @@ -1900,7 +1949,10 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(inode); - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .state = state, + .inode = inode, + }; int err; do { err = nfs4_handle_exception(server, @@ -1954,6 +2006,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) struct nfs4_state *state = calldata->state; struct nfs_server *server = NFS_SERVER(calldata->inode); + dprintk("%s: begin!\n", __func__); if (!nfs4_sequence_done(task, &calldata->res.seq_res)) return; /* hmm. we are done with the inode, and in the process of freeing @@ -1981,6 +2034,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) } nfs_release_seqid(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, calldata->res.fattr); + dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); } static void nfs4_close_prepare(struct rpc_task *task, void *data) @@ -1989,6 +2043,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) struct nfs4_state *state = calldata->state; int call_close = 0; + dprintk("%s: begin!\n", __func__); if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) return; @@ -2013,7 +2068,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) if (!call_close) { /* Note: exit _without_ calling nfs4_close_done */ task->tk_action = NULL; - return; + goto out; } if (calldata->arg.fmode == 0) { @@ -2022,17 +2077,20 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, task, NULL); - return; + goto out; } } nfs_fattr_init(calldata->res.fattr); calldata->timestamp = jiffies; if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), - &calldata->arg.seq_args, &calldata->res.seq_res, - 1, task)) - return; + &calldata->arg.seq_args, + &calldata->res.seq_res, + task)) + goto out; rpc_call_start(task); +out: + dprintk("%s: done!\n", __func__); } static const struct rpc_call_ops nfs4_close_ops = { @@ -2074,6 +2132,7 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) calldata = kzalloc(sizeof(*calldata), gfp_mask); if (calldata == NULL) goto out; + nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); calldata->inode = state->inode; calldata->state = state; calldata->arg.fh = NFS_FH(state->inode); @@ -2182,6 +2241,7 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; server->acl_bitmask = res.acl_bitmask; + server->fh_expire_type = res.fh_expire_type; } return status; @@ -2303,7 +2363,6 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, return nfs4_map_errors(status); } -static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); /* * Get locations and (maybe) other attributes of a referral. * Note that we'll actually follow the referral later when @@ -2420,6 +2479,10 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, } } + /* Deal with open(O_TRUNC) */ + if (sattr->ia_valid & ATTR_OPEN) + sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); + status = nfs4_do_setattr(inode, cred, fattr, sattr, state); if (status == 0) nfs_setattr_update_inode(inode, sattr); @@ -2494,7 +2557,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry struct nfs_server *server = NFS_SERVER(inode); struct nfs4_accessargs args = { .fh = NFS_FH(inode), - .bitmask = server->attr_bitmask, + .bitmask = server->cache_consistency_bitmask, }; struct nfs4_accessres res = { .server = server, @@ -2712,8 +2775,18 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) args->bitmask = server->cache_consistency_bitmask; res->server = server; - res->seq_res.sr_slot = NULL; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; + nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); +} + +static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->dir), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); } static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) @@ -2738,6 +2811,17 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; arg->bitmask = server->attr_bitmask; res->server = server; + nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); +} + +static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); } static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, @@ -3232,6 +3316,17 @@ static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message data->timestamp = jiffies; data->read_done_cb = nfs4_read_done_cb; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); +} + +static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->inode), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); } /* Reset the the nfs_read_data to send the read to the MDS. */ @@ -3305,6 +3400,17 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag data->timestamp = jiffies; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); +} + +static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + if (nfs4_setup_sequence(NFS_SERVER(data->inode), + &data->args.seq_args, + &data->res.seq_res, + task)) + return; + rpc_call_start(task); } static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) @@ -3339,6 +3445,7 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa data->write_done_cb = nfs4_commit_done_cb; data->res.server = server; msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); } struct nfs4_renewdata { @@ -3575,8 +3682,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu } if (npages > 1) { /* for decoding across pages */ - args.acl_scratch = alloc_page(GFP_KERNEL); - if (!args.acl_scratch) + res.acl_scratch = alloc_page(GFP_KERNEL); + if (!res.acl_scratch) goto out_free; } args.acl_len = npages * PAGE_SIZE; @@ -3612,8 +3719,8 @@ out_free: for (i = 0; i < npages; i++) if (pages[i]) __free_page(pages[i]); - if (args.acl_scratch) - __free_page(args.acl_scratch); + if (res.acl_scratch) + __free_page(res.acl_scratch); return ret; } @@ -3714,8 +3821,11 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, if (task->tk_status >= 0) return 0; switch(task->tk_status) { + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: + if (state != NULL) + nfs_remove_bad_delegation(state->inode); case -NFS4ERR_OPENMODE: if (state == NULL) break; @@ -3764,6 +3874,16 @@ wait_on_recovery: return -EAGAIN; } +static void nfs4_construct_boot_verifier(struct nfs_client *clp, + nfs4_verifier *bootverf) +{ + __be32 verf[2]; + + verf[0] = htonl((u32)clp->cl_boot_time.tv_sec); + verf[1] = htonl((u32)clp->cl_boot_time.tv_nsec); + memcpy(bootverf->data, verf, sizeof(bootverf->data)); +} + int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred, struct nfs4_setclientid_res *res) @@ -3780,15 +3900,13 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, .rpc_resp = res, .rpc_cred = cred, }; - __be32 *p; int loop = 0; int status; - p = (__be32*)sc_verifier.data; - *p++ = htonl((u32)clp->cl_boot_time.tv_sec); - *p = htonl((u32)clp->cl_boot_time.tv_nsec); + nfs4_construct_boot_verifier(clp, &sc_verifier); for(;;) { + rcu_read_lock(); setclientid.sc_name_len = scnprintf(setclientid.sc_name, sizeof(setclientid.sc_name), "%s/%s %s %s %u", clp->cl_ipaddr, @@ -3805,6 +3923,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); + rcu_read_unlock(); status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status != -NFS4ERR_CLID_INUSE) @@ -3891,7 +4010,7 @@ static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) if (nfs4_setup_sequence(d_data->res.server, &d_data->args.seq_args, - &d_data->res.seq_res, 1, task)) + &d_data->res.seq_res, task)) return; rpc_call_start(task); } @@ -3925,11 +4044,12 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co data = kzalloc(sizeof(*data), GFP_NOFS); if (data == NULL) return -ENOMEM; + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); data->args.fhandle = &data->fh; data->args.stateid = &data->stateid; data->args.bitmask = server->attr_bitmask; nfs_copy_fh(&data->fh, NFS_FH(inode)); - memcpy(&data->stateid, stateid, sizeof(data->stateid)); + nfs4_stateid_copy(&data->stateid, stateid); data->res.fattr = &data->fattr; data->res.server = server; nfs_fattr_init(data->res.fattr); @@ -4016,7 +4136,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock if (status != 0) goto out; lsp = request->fl_u.nfs4_fl.owner; - arg.lock_owner.id = lsp->ls_id.id; + arg.lock_owner.id = lsp->ls_seqid.owner_id; arg.lock_owner.s_dev = server->s_dev; status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); switch (status) { @@ -4112,9 +4232,8 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) return; switch (task->tk_status) { case 0: - memcpy(calldata->lsp->ls_stateid.data, - calldata->res.stateid.data, - sizeof(calldata->lsp->ls_stateid.data)); + nfs4_stateid_copy(&calldata->lsp->ls_stateid, + &calldata->res.stateid); renew_lease(calldata->server, calldata->timestamp); break; case -NFS4ERR_BAD_STATEID: @@ -4142,7 +4261,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data) calldata->timestamp = jiffies; if (nfs4_setup_sequence(calldata->server, &calldata->arg.seq_args, - &calldata->res.seq_res, 1, task)) + &calldata->res.seq_res, task)) return; rpc_call_start(task); } @@ -4182,6 +4301,7 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, return ERR_PTR(-ENOMEM); } + nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; @@ -4261,7 +4381,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, goto out_free_seqid; p->arg.lock_stateid = &lsp->ls_stateid; p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; - p->arg.lock_owner.id = lsp->ls_id.id; + p->arg.lock_owner.id = lsp->ls_seqid.owner_id; p->arg.lock_owner.s_dev = server->s_dev; p->res.lock_seqid = p->arg.lock_seqid; p->lsp = lsp; @@ -4297,7 +4417,7 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) data->timestamp = jiffies; if (nfs4_setup_sequence(data->server, &data->arg.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); @@ -4326,8 +4446,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) goto out; } if (data->rpc_status == 0) { - memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, - sizeof(data->lsp->ls_stateid.data)); + nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); } @@ -4415,6 +4534,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f data->arg.reclaim = NFS_LOCK_RECLAIM; task_setup_data.callback_ops = &nfs4_recover_lock_ops; } + nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); msg.rpc_argp = &data->arg; msg.rpc_resp = &data->res; task_setup_data.callback_data = data; @@ -4479,15 +4599,34 @@ out: } #if defined(CONFIG_NFS_V4_1) -static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) +static int nfs41_check_expired_locks(struct nfs4_state *state) { - int status; + int status, ret = NFS_OK; + struct nfs4_lock_state *lsp; struct nfs_server *server = NFS_SERVER(state->inode); - status = nfs41_test_stateid(server, state); + list_for_each_entry(lsp, &state->lock_states, ls_locks) { + if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { + status = nfs41_test_stateid(server, &lsp->ls_stateid); + if (status != NFS_OK) { + nfs41_free_stateid(server, &lsp->ls_stateid); + lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; + ret = status; + } + } + }; + + return ret; +} + +static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) +{ + int status = NFS_OK; + + if (test_bit(LK_STATE_IN_USE, &state->flags)) + status = nfs41_check_expired_locks(state); if (status == NFS_OK) - return 0; - nfs41_free_stateid(server, state); + return status; return nfs4_lock_expired(state, request); } #endif @@ -4523,7 +4662,8 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock /* Note: we always want to sleep here! */ request->fl_flags = fl_flags | FL_SLEEP; if (do_vfs_lock(request->fl_file, request) < 0) - printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); + printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " + "manager!\n", __func__); out_unlock: up_read(&nfsi->rwsem); out: @@ -4533,7 +4673,9 @@ out: static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) { - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .state = state, + }; int err; do { @@ -4603,8 +4745,8 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); switch (err) { default: - printk(KERN_ERR "%s: unhandled error %d.\n", - __func__, err); + printk(KERN_ERR "NFS: %s: unhandled error " + "%d.\n", __func__, err); case 0: case -ESTALE: goto out; @@ -4626,6 +4768,7 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) * The show must go on: exit, but mark the * stateid as needing recovery. */ + case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OPENMODE: @@ -4655,33 +4798,44 @@ out: return err; } +struct nfs_release_lockowner_data { + struct nfs4_lock_state *lsp; + struct nfs_server *server; + struct nfs_release_lockowner_args args; +}; + static void nfs4_release_lockowner_release(void *calldata) { + struct nfs_release_lockowner_data *data = calldata; + nfs4_free_lock_state(data->server, data->lsp); kfree(calldata); } -const struct rpc_call_ops nfs4_release_lockowner_ops = { +static const struct rpc_call_ops nfs4_release_lockowner_ops = { .rpc_release = nfs4_release_lockowner_release, }; -void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) +int nfs4_release_lockowner(struct nfs4_lock_state *lsp) { struct nfs_server *server = lsp->ls_state->owner->so_server; - struct nfs_release_lockowner_args *args; + struct nfs_release_lockowner_data *data; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], }; if (server->nfs_client->cl_mvops->minor_version != 0) - return; - args = kmalloc(sizeof(*args), GFP_NOFS); - if (!args) - return; - args->lock_owner.clientid = server->nfs_client->cl_clientid; - args->lock_owner.id = lsp->ls_id.id; - args->lock_owner.s_dev = server->s_dev; - msg.rpc_argp = args; - rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); + return -EINVAL; + data = kmalloc(sizeof(*data), GFP_NOFS); + if (!data) + return -ENOMEM; + data->lsp = lsp; + data->server = server; + data->args.lock_owner.clientid = server->nfs_client->cl_clientid; + data->args.lock_owner.id = lsp->ls_seqid.owner_id; + data->args.lock_owner.s_dev = server->s_dev; + msg.rpc_argp = &data->args; + rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); + return 0; } #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" @@ -4727,11 +4881,11 @@ static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || (fattr->valid & NFS_ATTR_FATTR_FILEID)) && (fattr->valid & NFS_ATTR_FATTR_FSID) && - (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) + (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) return; fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | - NFS_ATTR_FATTR_NLINK; + NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; fattr->nlink = 2; } @@ -4798,7 +4952,8 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct return status; } -int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) +static int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, + struct nfs4_secinfo_flavors *flavors) { struct nfs4_exception exception = { }; int err; @@ -4852,6 +5007,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) { nfs4_verifier verifier; struct nfs41_exchange_id_args args = { + .verifier = &verifier, .client = clp, .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, }; @@ -4865,15 +5021,11 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) .rpc_resp = &res, .rpc_cred = cred, }; - __be32 *p; dprintk("--> %s\n", __func__); BUG_ON(clp == NULL); - p = (u32 *)verifier.data; - *p++ = htonl((u32)clp->cl_boot_time.tv_sec); - *p = htonl((u32)clp->cl_boot_time.tv_nsec); - args.verifier = &verifier; + nfs4_construct_boot_verifier(clp, &verifier); args.id_len = scnprintf(args.id, sizeof(args.id), "%s/%s.%s/%u", @@ -4883,14 +5035,29 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) clp->cl_rpcclient->cl_auth->au_flavor); res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); - if (unlikely(!res.server_scope)) - return -ENOMEM; + if (unlikely(!res.server_scope)) { + status = -ENOMEM; + goto out; + } + + res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_KERNEL); + if (unlikely(!res.impl_id)) { + status = -ENOMEM; + goto out_server_scope; + } status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (!status) status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); if (!status) { + /* use the most recent implementation id */ + kfree(clp->impl_id); + clp->impl_id = res.impl_id; + } else + kfree(res.impl_id); + + if (!status) { if (clp->server_scope && !nfs41_same_server_scope(clp->server_scope, res.server_scope)) { @@ -4901,12 +5068,21 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) clp->server_scope = NULL; } - if (!clp->server_scope) + if (!clp->server_scope) { clp->server_scope = res.server_scope; - else - kfree(res.server_scope); + goto out; + } } +out_server_scope: + kfree(res.server_scope); +out: + if (clp->impl_id) + dprintk("%s: Server Implementation ID: " + "domain: %s, name: %s, date: %llu,%u\n", + __func__, clp->impl_id->domain, clp->impl_id->name, + clp->impl_id->date.seconds, + clp->impl_id->date.nseconds); dprintk("<-- %s status= %d\n", __func__, status); return status; } @@ -4930,7 +5106,7 @@ static void nfs4_get_lease_time_prepare(struct rpc_task *task, since we're invoked within one */ ret = nfs41_setup_sequence(data->clp->cl_session, &data->args->la_seq_args, - &data->res->lr_seq_res, 0, task); + &data->res->lr_seq_res, task); BUG_ON(ret == -EAGAIN); rpc_call_start(task); @@ -4963,7 +5139,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) dprintk("<-- %s\n", __func__); } -struct rpc_call_ops nfs4_get_lease_time_ops = { +static const struct rpc_call_ops nfs4_get_lease_time_ops = { .rpc_call_prepare = nfs4_get_lease_time_prepare, .rpc_call_done = nfs4_get_lease_time_done, }; @@ -4994,6 +5170,7 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) }; int status; + nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); dprintk("--> %s\n", __func__); task = rpc_run_task(&task_setup); @@ -5008,37 +5185,53 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) return status; } +static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) +{ + return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); +} + +static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, + struct nfs4_slot *new, + u32 max_slots, + u32 ivalue) +{ + struct nfs4_slot *old = NULL; + u32 i; + + spin_lock(&tbl->slot_tbl_lock); + if (new) { + old = tbl->slots; + tbl->slots = new; + tbl->max_slots = max_slots; + } + tbl->highest_used_slotid = -1; /* no slot is currently used */ + for (i = 0; i < tbl->max_slots; i++) + tbl->slots[i].seq_nr = ivalue; + spin_unlock(&tbl->slot_tbl_lock); + kfree(old); +} + /* - * Reset a slot table + * (re)Initialise a slot table */ -static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, - int ivalue) +static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, + u32 ivalue) { struct nfs4_slot *new = NULL; - int i; - int ret = 0; + int ret = -ENOMEM; dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, max_reqs, tbl->max_slots); /* Does the newly negotiated max_reqs match the existing slot table? */ if (max_reqs != tbl->max_slots) { - ret = -ENOMEM; - new = kmalloc(max_reqs * sizeof(struct nfs4_slot), - GFP_NOFS); + new = nfs4_alloc_slots(max_reqs, GFP_NOFS); if (!new) goto out; - ret = 0; - kfree(tbl->slots); - } - spin_lock(&tbl->slot_tbl_lock); - if (new) { - tbl->slots = new; - tbl->max_slots = max_reqs; } - for (i = 0; i < tbl->max_slots; ++i) - tbl->slots[i].seq_nr = ivalue; - spin_unlock(&tbl->slot_tbl_lock); + ret = 0; + + nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, tbl, tbl->slots, tbl->max_slots); out: @@ -5061,36 +5254,6 @@ static void nfs4_destroy_slot_tables(struct nfs4_session *session) } /* - * Initialize slot table - */ -static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, - int max_slots, int ivalue) -{ - struct nfs4_slot *slot; - int ret = -ENOMEM; - - BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); - - dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); - - slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); - if (!slot) - goto out; - ret = 0; - - spin_lock(&tbl->slot_tbl_lock); - tbl->max_slots = max_slots; - tbl->slots = slot; - tbl->highest_used_slotid = -1; /* no slot is currently used */ - spin_unlock(&tbl->slot_tbl_lock); - dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, - tbl, tbl->slots, tbl->max_slots); -out: - dprintk("<-- %s: return %d\n", __func__, ret); - return ret; -} - -/* * Initialize or reset the forechannel and backchannel tables */ static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) @@ -5101,25 +5264,16 @@ static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) dprintk("--> %s\n", __func__); /* Fore channel */ tbl = &ses->fc_slot_table; - if (tbl->slots == NULL) { - status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1); - if (status) /* -ENOMEM */ - return status; - } else { - status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1); - if (status) - return status; - } + status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); + if (status) /* -ENOMEM */ + return status; /* Back channel */ tbl = &ses->bc_slot_table; - if (tbl->slots == NULL) { - status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0); - if (status) - /* Fore and back channel share a connection so get - * both slot tables or neither */ - nfs4_destroy_slot_tables(ses); - } else - status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0); + status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); + if (status && tbl->slots == NULL) + /* Fore and back channel share a connection so get + * both slot tables or neither */ + nfs4_destroy_slot_tables(ses); return status; } @@ -5133,13 +5287,13 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) return NULL; tbl = &session->fc_slot_table; - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; spin_lock_init(&tbl->slot_tbl_lock); rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); init_completion(&tbl->complete); tbl = &session->bc_slot_table; - tbl->highest_used_slotid = -1; + tbl->highest_used_slotid = NFS4_NO_SLOT; spin_lock_init(&tbl->slot_tbl_lock); rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); init_completion(&tbl->complete); @@ -5152,11 +5306,16 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) void nfs4_destroy_session(struct nfs4_session *session) { + struct rpc_xprt *xprt; + nfs4_proc_destroy_session(session); + + rcu_read_lock(); + xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); + rcu_read_unlock(); dprintk("%s Destroy backchannel for xprt %p\n", - __func__, session->clp->cl_rpcclient->cl_xprt); - xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, - NFS41_BC_MIN_CALLBACKS); + __func__, xprt); + xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); nfs4_destroy_slot_tables(session); kfree(session); } @@ -5184,7 +5343,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) args->fc_attrs.max_rqst_sz = mxrqst_sz; args->fc_attrs.max_resp_sz = mxresp_sz; args->fc_attrs.max_ops = NFS4_MAX_OPS; - args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; + args->fc_attrs.max_reqs = max_session_slots; dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " "max_ops=%u max_reqs=%u\n", @@ -5224,6 +5383,8 @@ static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args return -EINVAL; if (rcvd->max_reqs == 0) return -EINVAL; + if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) + rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; return 0; } @@ -5239,9 +5400,9 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) return -EINVAL; /* These would render the backchannel useless: */ - if (rcvd->max_ops == 0) + if (rcvd->max_ops != sent->max_ops) return -EINVAL; - if (rcvd->max_reqs == 0) + if (rcvd->max_reqs != sent->max_reqs) return -EINVAL; return 0; } @@ -5344,7 +5505,7 @@ int nfs4_proc_destroy_session(struct nfs4_session *session) if (status) printk(KERN_WARNING - "Got error %d from the server on DESTROY_SESSION. " + "NFS: Got error %d from the server on DESTROY_SESSION. " "Session has been destroyed regardless...\n", status); dprintk("<-- nfs4_proc_destroy_session\n"); @@ -5467,7 +5628,7 @@ static void nfs41_sequence_prepare(struct rpc_task *task, void *data) args = task->tk_msg.rpc_argp; res = task->tk_msg.rpc_resp; - if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) + if (nfs41_setup_sequence(clp->cl_session, args, res, task)) return; rpc_call_start(task); } @@ -5499,6 +5660,7 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_ nfs_put_client(clp); return ERR_PTR(-ENOMEM); } + nfs41_init_sequence(&calldata->args, &calldata->res, 0); msg.rpc_argp = &calldata->args; msg.rpc_resp = &calldata->res; calldata->clp = clp; @@ -5560,7 +5722,7 @@ static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); if (nfs41_setup_sequence(calldata->clp->cl_session, &calldata->arg.seq_args, - &calldata->res.seq_res, 0, task)) + &calldata->res.seq_res, task)) return; rpc_call_start(task); @@ -5639,6 +5801,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp) calldata->clp = clp; calldata->arg.one_fs = 0; + nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); msg.rpc_argp = &calldata->arg; msg.rpc_resp = &calldata->res; task_setup_data.callback_data = calldata; @@ -5670,7 +5833,7 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) * to be no way to prevent it completely. */ if (nfs4_setup_sequence(server, &lgp->args.seq_args, - &lgp->res.seq_res, 0, task)) + &lgp->res.seq_res, task)) return; if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, NFS_I(lgp->args.inode)->layout, @@ -5745,6 +5908,7 @@ int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) lgp->res.layoutp = &lgp->args.layout; lgp->res.seq_res.sr_slot = NULL; + nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -5765,7 +5929,7 @@ nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) dprintk("--> %s\n", __func__); if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, - &lrp->res.seq_res, 0, task)) + &lrp->res.seq_res, task)) return; rpc_call_start(task); } @@ -5831,6 +5995,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) int status; dprintk("--> %s\n", __func__); + nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -5931,7 +6096,7 @@ static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) struct nfs_server *server = NFS_SERVER(data->args.inode); if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) + &data->res.seq_res, task)) return; rpc_call_start(task); } @@ -6018,6 +6183,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) data->args.lastbytewritten, data->args.inode->i_ino); + nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); @@ -6111,11 +6277,12 @@ out_freepage: out: return err; } -static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) + +static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) { int status; struct nfs41_test_stateid_args args = { - .stateid = &state->stateid, + .stateid = stateid, }; struct nfs41_test_stateid_res res; struct rpc_message msg = { @@ -6123,28 +6290,31 @@ static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *sta .rpc_argp = &args, .rpc_resp = &res, }; - args.seq_args.sa_session = res.seq_res.sr_session = NULL; - status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); + + nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); + status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); + + if (status == NFS_OK) + return res.status; return status; } -static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state) +static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(server, - _nfs41_test_stateid(server, state), + _nfs41_test_stateid(server, stateid), &exception); } while (exception.retry); return err; } -static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state) +static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) { - int status; struct nfs41_free_stateid_args args = { - .stateid = &state->stateid, + .stateid = stateid, }; struct nfs41_free_stateid_res res; struct rpc_message msg = { @@ -6153,25 +6323,46 @@ static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *stat .rpc_resp = &res, }; - args.seq_args.sa_session = res.seq_res.sr_session = NULL; - status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1); - return status; + nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); + return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); } -static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state) +static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(server, - _nfs4_free_stateid(server, state), + _nfs4_free_stateid(server, stateid), &exception); } while (exception.retry); return err; } + +static bool nfs41_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) + return false; + + if (s1->seqid == s2->seqid) + return true; + if (s1->seqid == 0 || s2->seqid == 0) + return true; + + return false; +} + #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { +static bool nfs4_match_stateid(const nfs4_stateid *s1, + const nfs4_stateid *s2) +{ + return nfs4_stateid_match(s1, s2); +} + + +static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6181,7 +6372,7 @@ struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, .recover_open = nfs4_open_reclaim, @@ -6192,7 +6383,7 @@ struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs4_open_expired, @@ -6202,7 +6393,7 @@ struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { +static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, .recover_open = nfs41_open_expired, @@ -6212,14 +6403,14 @@ struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { }; #endif /* CONFIG_NFS_V4_1 */ -struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { .sched_state_renewal = nfs4_proc_async_renew, .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, .renew_lease = nfs4_proc_renew, }; #if defined(CONFIG_NFS_V4_1) -struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { +static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { .sched_state_renewal = nfs41_proc_async_sequence, .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, .renew_lease = nfs4_proc_sequence, @@ -6229,7 +6420,7 @@ struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { .minor_version = 0, .call_sync = _nfs4_call_sync, - .validate_stateid = nfs4_validate_delegation_stateid, + .match_stateid = nfs4_match_stateid, .find_root_sec = nfs4_find_root_sec, .reboot_recovery_ops = &nfs40_reboot_recovery_ops, .nograce_recovery_ops = &nfs40_nograce_recovery_ops, @@ -6240,7 +6431,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .minor_version = 1, .call_sync = _nfs4_call_sync_session, - .validate_stateid = nfs41_validate_delegation_stateid, + .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, @@ -6280,9 +6471,11 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .create = nfs4_proc_create, .remove = nfs4_proc_remove, .unlink_setup = nfs4_proc_unlink_setup, + .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, .unlink_done = nfs4_proc_unlink_done, .rename = nfs4_proc_rename, .rename_setup = nfs4_proc_rename_setup, + .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, .rename_done = nfs4_proc_rename_done, .link = nfs4_proc_link, .symlink = nfs4_proc_symlink, @@ -6296,8 +6489,10 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .set_capabilities = nfs4_server_capabilities, .decode_dirent = nfs4_decode_dirent, .read_setup = nfs4_proc_read_setup, + .read_rpc_prepare = nfs4_proc_read_rpc_prepare, .read_done = nfs4_read_done, .write_setup = nfs4_proc_write_setup, + .write_rpc_prepare = nfs4_proc_write_rpc_prepare, .write_done = nfs4_write_done, .commit_setup = nfs4_proc_commit_setup, .commit_done = nfs4_commit_done, @@ -6321,6 +6516,10 @@ const struct xattr_handler *nfs4_xattr_handlers[] = { NULL }; +module_param(max_session_slots, ushort, 0644); +MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " + "requests the client will negotiate"); + /* * Local variables: * c-basic-offset: 8 diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a53f33b4ac3..0f43414eb25 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -146,6 +146,11 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp) struct rpc_cred *cred = NULL; struct nfs_server *server; + /* Use machine credentials if available */ + cred = nfs4_get_machine_cred_locked(clp); + if (cred != NULL) + goto out; + rcu_read_lock(); list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { cred = nfs4_get_renew_cred_server_locked(server); @@ -153,6 +158,8 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp) break; } rcu_read_unlock(); + +out: return cred; } @@ -190,30 +197,29 @@ static int nfs41_setup_state_renewal(struct nfs_client *clp) static void nfs4_end_drain_session(struct nfs_client *clp) { struct nfs4_session *ses = clp->cl_session; + struct nfs4_slot_table *tbl; int max_slots; if (ses == NULL) return; + tbl = &ses->fc_slot_table; if (test_and_clear_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { - spin_lock(&ses->fc_slot_table.slot_tbl_lock); - max_slots = ses->fc_slot_table.max_slots; + spin_lock(&tbl->slot_tbl_lock); + max_slots = tbl->max_slots; while (max_slots--) { - struct rpc_task *task; - - task = rpc_wake_up_next(&ses->fc_slot_table. - slot_tbl_waitq); - if (!task) + if (rpc_wake_up_first(&tbl->slot_tbl_waitq, + nfs4_set_task_privileged, + NULL) == NULL) break; - rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); } - spin_unlock(&ses->fc_slot_table.slot_tbl_lock); + spin_unlock(&tbl->slot_tbl_lock); } } static int nfs4_wait_on_slot_tbl(struct nfs4_slot_table *tbl) { spin_lock(&tbl->slot_tbl_lock); - if (tbl->highest_used_slotid != -1) { + if (tbl->highest_used_slotid != NFS4_NO_SLOT) { INIT_COMPLETION(tbl->complete); spin_unlock(&tbl->slot_tbl_lock); return wait_for_completion_interruptible(&tbl->complete); @@ -317,62 +323,6 @@ out: return cred; } -static void nfs_alloc_unique_id_locked(struct rb_root *root, - struct nfs_unique_id *new, - __u64 minval, int maxbits) -{ - struct rb_node **p, *parent; - struct nfs_unique_id *pos; - __u64 mask = ~0ULL; - - if (maxbits < 64) - mask = (1ULL << maxbits) - 1ULL; - - /* Ensure distribution is more or less flat */ - get_random_bytes(&new->id, sizeof(new->id)); - new->id &= mask; - if (new->id < minval) - new->id += minval; -retry: - p = &root->rb_node; - parent = NULL; - - while (*p != NULL) { - parent = *p; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - - if (new->id < pos->id) - p = &(*p)->rb_left; - else if (new->id > pos->id) - p = &(*p)->rb_right; - else - goto id_exists; - } - rb_link_node(&new->rb_node, parent, p); - rb_insert_color(&new->rb_node, root); - return; -id_exists: - for (;;) { - new->id++; - if (new->id < minval || (new->id & mask) != new->id) { - new->id = minval; - break; - } - parent = rb_next(parent); - if (parent == NULL) - break; - pos = rb_entry(parent, struct nfs_unique_id, rb_node); - if (new->id < pos->id) - break; - } - goto retry; -} - -static void nfs_free_unique_id(struct rb_root *root, struct nfs_unique_id *id) -{ - rb_erase(&id->rb_node, root); -} - static struct nfs4_state_owner * nfs4_find_state_owner_locked(struct nfs_server *server, struct rpc_cred *cred) { @@ -405,6 +355,7 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) struct rb_node **p = &server->state_owners.rb_node, *parent = NULL; struct nfs4_state_owner *sp; + int err; while (*p != NULL) { parent = *p; @@ -421,8 +372,9 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) return sp; } } - nfs_alloc_unique_id_locked(&server->openowner_id, - &new->so_owner_id, 1, 64); + err = ida_get_new(&server->openowner_id, &new->so_seqid.owner_id); + if (err) + return ERR_PTR(err); rb_link_node(&new->so_server_node, parent, p); rb_insert_color(&new->so_server_node, &server->state_owners); return new; @@ -435,7 +387,23 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) if (!RB_EMPTY_NODE(&sp->so_server_node)) rb_erase(&sp->so_server_node, &server->state_owners); - nfs_free_unique_id(&server->openowner_id, &sp->so_owner_id); + ida_remove(&server->openowner_id, sp->so_seqid.owner_id); +} + +static void +nfs4_init_seqid_counter(struct nfs_seqid_counter *sc) +{ + sc->flags = 0; + sc->counter = 0; + spin_lock_init(&sc->lock); + INIT_LIST_HEAD(&sc->list); + rpc_init_wait_queue(&sc->wait, "Seqid_waitqueue"); +} + +static void +nfs4_destroy_seqid_counter(struct nfs_seqid_counter *sc) +{ + rpc_destroy_wait_queue(&sc->wait); } /* @@ -444,19 +412,20 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) * */ static struct nfs4_state_owner * -nfs4_alloc_state_owner(void) +nfs4_alloc_state_owner(struct nfs_server *server, + struct rpc_cred *cred, + gfp_t gfp_flags) { struct nfs4_state_owner *sp; - sp = kzalloc(sizeof(*sp),GFP_NOFS); + sp = kzalloc(sizeof(*sp), gfp_flags); if (!sp) return NULL; + sp->so_server = server; + sp->so_cred = get_rpccred(cred); spin_lock_init(&sp->so_lock); INIT_LIST_HEAD(&sp->so_states); - rpc_init_wait_queue(&sp->so_sequence.wait, "Seqid_waitqueue"); - sp->so_seqid.sequence = &sp->so_sequence; - spin_lock_init(&sp->so_sequence.lock); - INIT_LIST_HEAD(&sp->so_sequence.list); + nfs4_init_seqid_counter(&sp->so_seqid); atomic_set(&sp->so_count, 1); INIT_LIST_HEAD(&sp->so_lru); return sp; @@ -478,7 +447,7 @@ nfs4_drop_state_owner(struct nfs4_state_owner *sp) static void nfs4_free_state_owner(struct nfs4_state_owner *sp) { - rpc_destroy_wait_queue(&sp->so_sequence.wait); + nfs4_destroy_seqid_counter(&sp->so_seqid); put_rpccred(sp->so_cred); kfree(sp); } @@ -516,7 +485,8 @@ static void nfs4_gc_state_owners(struct nfs_server *server) * Returns a pointer to an instantiated nfs4_state_owner struct, or NULL. */ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, - struct rpc_cred *cred) + struct rpc_cred *cred, + gfp_t gfp_flags) { struct nfs_client *clp = server->nfs_client; struct nfs4_state_owner *sp, *new; @@ -526,20 +496,18 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, spin_unlock(&clp->cl_lock); if (sp != NULL) goto out; - new = nfs4_alloc_state_owner(); + new = nfs4_alloc_state_owner(server, cred, gfp_flags); if (new == NULL) goto out; - new->so_server = server; - new->so_cred = cred; - spin_lock(&clp->cl_lock); - sp = nfs4_insert_state_owner_locked(new); - spin_unlock(&clp->cl_lock); - if (sp == new) - get_rpccred(cred); - else { - rpc_destroy_wait_queue(&new->so_sequence.wait); - kfree(new); - } + do { + if (ida_pre_get(&server->openowner_id, gfp_flags) == 0) + break; + spin_lock(&clp->cl_lock); + sp = nfs4_insert_state_owner_locked(new); + spin_unlock(&clp->cl_lock); + } while (sp == ERR_PTR(-EAGAIN)); + if (sp != new) + nfs4_free_state_owner(new); out: nfs4_gc_state_owners(server); return sp; @@ -795,15 +763,11 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f { struct nfs4_lock_state *lsp; struct nfs_server *server = state->owner->so_server; - struct nfs_client *clp = server->nfs_client; lsp = kzalloc(sizeof(*lsp), GFP_NOFS); if (lsp == NULL) return NULL; - rpc_init_wait_queue(&lsp->ls_sequence.wait, "lock_seqid_waitqueue"); - spin_lock_init(&lsp->ls_sequence.lock); - INIT_LIST_HEAD(&lsp->ls_sequence.list); - lsp->ls_seqid.sequence = &lsp->ls_sequence; + nfs4_init_seqid_counter(&lsp->ls_seqid); atomic_set(&lsp->ls_count, 1); lsp->ls_state = state; lsp->ls_owner.lo_type = type; @@ -815,25 +779,22 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f lsp->ls_owner.lo_u.posix_owner = fl_owner; break; default: - kfree(lsp); - return NULL; + goto out_free; } - spin_lock(&clp->cl_lock); - nfs_alloc_unique_id_locked(&server->lockowner_id, &lsp->ls_id, 1, 64); - spin_unlock(&clp->cl_lock); + lsp->ls_seqid.owner_id = ida_simple_get(&server->lockowner_id, 0, 0, GFP_NOFS); + if (lsp->ls_seqid.owner_id < 0) + goto out_free; INIT_LIST_HEAD(&lsp->ls_locks); return lsp; +out_free: + kfree(lsp); + return NULL; } -static void nfs4_free_lock_state(struct nfs4_lock_state *lsp) +void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) { - struct nfs_server *server = lsp->ls_state->owner->so_server; - struct nfs_client *clp = server->nfs_client; - - spin_lock(&clp->cl_lock); - nfs_free_unique_id(&server->lockowner_id, &lsp->ls_id); - spin_unlock(&clp->cl_lock); - rpc_destroy_wait_queue(&lsp->ls_sequence.wait); + ida_simple_remove(&server->lockowner_id, lsp->ls_seqid.owner_id); + nfs4_destroy_seqid_counter(&lsp->ls_seqid); kfree(lsp); } @@ -865,7 +826,7 @@ static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_ } spin_unlock(&state->state_lock); if (new != NULL) - nfs4_free_lock_state(new); + nfs4_free_lock_state(state->owner->so_server, new); return lsp; } @@ -886,9 +847,11 @@ void nfs4_put_lock_state(struct nfs4_lock_state *lsp) if (list_empty(&state->lock_states)) clear_bit(LK_STATE_IN_USE, &state->flags); spin_unlock(&state->state_lock); - if (lsp->ls_flags & NFS_LOCK_INITIALIZED) - nfs4_release_lockowner(lsp); - nfs4_free_lock_state(lsp); + if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { + if (nfs4_release_lockowner(lsp) == 0) + return; + } + nfs4_free_lock_state(lsp->ls_state->owner->so_server, lsp); } static void nfs4_fl_copy_lock(struct file_lock *dst, struct file_lock *src) @@ -918,7 +881,8 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) if (fl->fl_flags & FL_POSIX) lsp = nfs4_get_lock_state(state, fl->fl_owner, 0, NFS4_POSIX_LOCK_TYPE); else if (fl->fl_flags & FL_FLOCK) - lsp = nfs4_get_lock_state(state, 0, fl->fl_pid, NFS4_FLOCK_LOCK_TYPE); + lsp = nfs4_get_lock_state(state, NULL, fl->fl_pid, + NFS4_FLOCK_LOCK_TYPE); else return -EINVAL; if (lsp == NULL) @@ -928,28 +892,49 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl) return 0; } -/* - * Byte-range lock aware utility to initialize the stateid of read/write - * requests. - */ -void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid) +static bool nfs4_copy_lock_stateid(nfs4_stateid *dst, struct nfs4_state *state, + fl_owner_t fl_owner, pid_t fl_pid) { struct nfs4_lock_state *lsp; - int seq; + bool ret = false; - do { - seq = read_seqbegin(&state->seqlock); - memcpy(dst, &state->stateid, sizeof(*dst)); - } while (read_seqretry(&state->seqlock, seq)); if (test_bit(LK_STATE_IN_USE, &state->flags) == 0) - return; + goto out; spin_lock(&state->state_lock); lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE); - if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) - memcpy(dst, &lsp->ls_stateid, sizeof(*dst)); + if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) { + nfs4_stateid_copy(dst, &lsp->ls_stateid); + ret = true; + } spin_unlock(&state->state_lock); nfs4_put_lock_state(lsp); +out: + return ret; +} + +static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) +{ + int seq; + + do { + seq = read_seqbegin(&state->seqlock); + nfs4_stateid_copy(dst, &state->stateid); + } while (read_seqretry(&state->seqlock, seq)); +} + +/* + * Byte-range lock aware utility to initialize the stateid of read/write + * requests. + */ +void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, + fmode_t fmode, fl_owner_t fl_owner, pid_t fl_pid) +{ + if (nfs4_copy_delegation_stateid(dst, state->inode, fmode)) + return; + if (nfs4_copy_lock_stateid(dst, state, fl_owner, fl_pid)) + return; + nfs4_copy_open_stateid(dst, state); } struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask) @@ -960,20 +945,28 @@ struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_m if (new != NULL) { new->sequence = counter; INIT_LIST_HEAD(&new->list); + new->task = NULL; } return new; } void nfs_release_seqid(struct nfs_seqid *seqid) { - if (!list_empty(&seqid->list)) { - struct rpc_sequence *sequence = seqid->sequence->sequence; + struct nfs_seqid_counter *sequence; - spin_lock(&sequence->lock); - list_del_init(&seqid->list); - spin_unlock(&sequence->lock); - rpc_wake_up(&sequence->wait); + if (list_empty(&seqid->list)) + return; + sequence = seqid->sequence; + spin_lock(&sequence->lock); + list_del_init(&seqid->list); + if (!list_empty(&sequence->list)) { + struct nfs_seqid *next; + + next = list_first_entry(&sequence->list, + struct nfs_seqid, list); + rpc_wake_up_queued_task(&sequence->wait, next->task); } + spin_unlock(&sequence->lock); } void nfs_free_seqid(struct nfs_seqid *seqid) @@ -989,14 +982,14 @@ void nfs_free_seqid(struct nfs_seqid *seqid) */ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid) { - BUG_ON(list_first_entry(&seqid->sequence->sequence->list, struct nfs_seqid, list) != seqid); + BUG_ON(list_first_entry(&seqid->sequence->list, struct nfs_seqid, list) != seqid); switch (status) { case 0: break; case -NFS4ERR_BAD_SEQID: if (seqid->sequence->flags & NFS_SEQID_CONFIRMED) return; - printk(KERN_WARNING "NFS: v4 server returned a bad" + pr_warn_ratelimited("NFS: v4 server returned a bad" " sequence-id error on an" " unconfirmed sequence %p!\n", seqid->sequence); @@ -1040,10 +1033,11 @@ void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid) int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task) { - struct rpc_sequence *sequence = seqid->sequence->sequence; + struct nfs_seqid_counter *sequence = seqid->sequence; int status = 0; spin_lock(&sequence->lock); + seqid->task = task; if (list_empty(&seqid->list)) list_add_tail(&seqid->list, &sequence->list); if (list_first_entry(&sequence->list, struct nfs_seqid, list) == seqid) @@ -1072,19 +1066,28 @@ static void nfs4_clear_state_manager_bit(struct nfs_client *clp) void nfs4_schedule_state_manager(struct nfs_client *clp) { struct task_struct *task; + char buf[INET6_ADDRSTRLEN + sizeof("-manager") + 1]; if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0) return; __module_get(THIS_MODULE); atomic_inc(&clp->cl_count); - task = kthread_run(nfs4_run_state_manager, clp, "%s-manager", - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_ADDR)); - if (!IS_ERR(task)) - return; - nfs4_clear_state_manager_bit(clp); - nfs_put_client(clp); - module_put(THIS_MODULE); + + /* The rcu_read_lock() is not strictly necessary, as the state + * manager is the only thread that ever changes the rpc_xprt + * after it's initialized. At this point, we're single threaded. */ + rcu_read_lock(); + snprintf(buf, sizeof(buf), "%s-manager", + rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); + task = kthread_run(nfs4_run_state_manager, clp, buf); + if (IS_ERR(task)) { + printk(KERN_ERR "%s: kthread_run: %ld\n", + __func__, PTR_ERR(task)); + nfs4_clear_state_manager_bit(clp); + nfs_put_client(clp); + module_put(THIS_MODULE); + } } /* @@ -1098,10 +1101,25 @@ void nfs4_schedule_lease_recovery(struct nfs_client *clp) set_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state); nfs4_schedule_state_manager(clp); } +EXPORT_SYMBOL_GPL(nfs4_schedule_lease_recovery); + +/* + * nfs40_handle_cb_pathdown - return all delegations after NFS4ERR_CB_PATH_DOWN + * @clp: client to process + * + * Set the NFS4CLNT_LEASE_EXPIRED state in order to force a + * resend of the SETCLIENTID and hence re-establish the + * callback channel. Then return all existing delegations. + */ +static void nfs40_handle_cb_pathdown(struct nfs_client *clp) +{ + set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); + nfs_expire_all_delegations(clp); +} void nfs4_schedule_path_down_recovery(struct nfs_client *clp) { - nfs_handle_cb_pathdown(clp); + nfs40_handle_cb_pathdown(clp); nfs4_schedule_state_manager(clp); } @@ -1135,6 +1153,34 @@ void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4 nfs4_state_mark_reclaim_nograce(clp, state); nfs4_schedule_state_manager(clp); } +EXPORT_SYMBOL_GPL(nfs4_schedule_stateid_recovery); + +void nfs_inode_find_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid) +{ + struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; + struct nfs_inode *nfsi = NFS_I(inode); + struct nfs_open_context *ctx; + struct nfs4_state *state; + bool found = false; + + spin_lock(&inode->i_lock); + list_for_each_entry(ctx, &nfsi->open_files, list) { + state = ctx->state; + if (state == NULL) + continue; + if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) + continue; + if (!nfs4_stateid_match(&state->stateid, stateid)) + continue; + nfs4_state_mark_reclaim_nograce(clp, state); + found = true; + } + spin_unlock(&inode->i_lock); + if (found) + nfs4_schedule_state_manager(clp); +} + static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops) { @@ -1173,8 +1219,8 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: goto out; default: - printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __func__, status); + printk(KERN_ERR "NFS: %s: unhandled error %d. " + "Zeroing state\n", __func__, status); case -ENOMEM: case -NFS4ERR_DENIED: case -NFS4ERR_RECLAIM_BAD: @@ -1220,8 +1266,9 @@ restart: spin_lock(&state->state_lock); list_for_each_entry(lock, &state->lock_states, ls_locks) { if (!(lock->ls_flags & NFS_LOCK_INITIALIZED)) - printk("%s: Lock reclaim failed!\n", - __func__); + pr_warn_ratelimited("NFS: " + "%s: Lock reclaim " + "failed!\n", __func__); } spin_unlock(&state->state_lock); nfs4_put_open_state(state); @@ -1230,8 +1277,8 @@ restart: } switch (status) { default: - printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __func__, status); + printk(KERN_ERR "NFS: %s: unhandled error %d. " + "Zeroing state\n", __func__, status); case -ENOENT: case -ENOMEM: case -ESTALE: @@ -1239,8 +1286,8 @@ restart: * Open state on this file cannot be recovered * All we can do is revert to using the zero stateid. */ - memset(state->stateid.data, 0, - sizeof(state->stateid.data)); + memset(&state->stateid, 0, + sizeof(state->stateid)); /* Mark the file as being 'closed' */ state->state = 0; break; @@ -1418,7 +1465,7 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error) case 0: break; case -NFS4ERR_CB_PATH_DOWN: - nfs_handle_cb_pathdown(clp); + nfs40_handle_cb_pathdown(clp); break; case -NFS4ERR_NO_GRACE: nfs4_state_end_reclaim_reboot(clp); @@ -1799,7 +1846,7 @@ static void nfs4_state_manager(struct nfs_client *clp) } while (atomic_read(&clp->cl_count) > 1); return; out_error: - printk(KERN_WARNING "Error: state manager failed on NFSv4 server %s" + pr_warn_ratelimited("NFS: state manager failed on NFSv4 server %s" " with error %d\n", clp->cl_hostname, -status); nfs4_end_drain_session(clp); nfs4_clear_state_manager_bit(clp); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 95e92e43840..c74fdb114b4 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -44,6 +44,8 @@ #include <linux/pagemap.h> #include <linux/proc_fs.h> #include <linux/kdev_t.h> +#include <linux/module.h> +#include <linux/utsname.h> #include <linux/sunrpc/clnt.h> #include <linux/sunrpc/msg_prot.h> #include <linux/sunrpc/gss_api.h> @@ -271,7 +273,12 @@ static int nfs4_stat_to_errno(int); 1 /* flags */ + \ 1 /* spa_how */ + \ 0 /* SP4_NONE (for now) */ + \ - 1 /* zero implemetation id array */) + 1 /* implementation id array of size 1 */ + \ + 1 /* nii_domain */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 1 /* nii_name */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 3 /* nii_date */) #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 2 /* eir_clientid */ + \ 1 /* eir_sequenceid */ + \ @@ -284,7 +291,11 @@ static int nfs4_stat_to_errno(int); /* eir_server_scope<> */ \ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 1 /* eir_server_impl_id array length */ + \ - 0 /* ignored eir_server_impl_id contents */) + 1 /* nii_domain */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 1 /* nii_name */ + \ + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ + 3 /* nii_date */) #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) #define decode_channel_attrs_maxsz (6 + \ 1 /* ca_rdma_ird.len */ + \ @@ -838,6 +849,12 @@ const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + XDR_UNIT); #endif /* CONFIG_NFS_V4_1 */ +static unsigned short send_implementation_id = 1; + +module_param(send_implementation_id, ushort, 0644); +MODULE_PARM_DESC(send_implementation_id, + "Send implementation ID with NFSv4.1 exchange_id"); + static const umode_t nfs_type2fmt[] = { [NF4BAD] = 0, [NF4REG] = S_IFREG, @@ -868,15 +885,44 @@ static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) return p; } +static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) +{ + __be32 *p; + + p = xdr_reserve_space(xdr, len); + xdr_encode_opaque_fixed(p, buf, len); +} + static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) { __be32 *p; - p = xdr_reserve_space(xdr, 4 + len); - BUG_ON(p == NULL); + p = reserve_space(xdr, 4 + len); xdr_encode_opaque(p, str, len); } +static void encode_uint32(struct xdr_stream *xdr, u32 n) +{ + __be32 *p; + + p = reserve_space(xdr, 4); + *p = cpu_to_be32(n); +} + +static void encode_uint64(struct xdr_stream *xdr, u64 n) +{ + __be32 *p; + + p = reserve_space(xdr, 8); + xdr_encode_hyper(p, n); +} + +static void encode_nfs4_seqid(struct xdr_stream *xdr, + const struct nfs_seqid *seqid) +{ + encode_uint32(xdr, seqid->sequence->counter); +} + static void encode_compound_hdr(struct xdr_stream *xdr, struct rpc_rqst *req, struct compound_hdr *hdr) @@ -889,28 +935,37 @@ static void encode_compound_hdr(struct xdr_stream *xdr, * but this is not required as a MUST for the server to do so. */ hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; - dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); - p = reserve_space(xdr, 4 + hdr->taglen + 8); - p = xdr_encode_opaque(p, hdr->tag, hdr->taglen); + encode_string(xdr, hdr->taglen, hdr->tag); + p = reserve_space(xdr, 8); *p++ = cpu_to_be32(hdr->minorversion); hdr->nops_p = p; *p = cpu_to_be32(hdr->nops); } +static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, + uint32_t replen, + struct compound_hdr *hdr) +{ + encode_uint32(xdr, op); + hdr->nops++; + hdr->replen += replen; +} + static void encode_nops(struct compound_hdr *hdr) { BUG_ON(hdr->nops > NFS4_MAX_OPS); *hdr->nops_p = htonl(hdr->nops); } -static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) +static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) { - __be32 *p; + encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); +} - p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); - BUG_ON(p == NULL); - xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); +static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) +{ + encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); } static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) @@ -1023,7 +1078,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const * Now we backfill the bitmap and the attribute buffer length. */ if (len != ((char *)p - (char *)q) + 4) { - printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", + printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n", len, ((char *)p - (char *)q) + 4); BUG(); } @@ -1037,46 +1092,33 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(OP_ACCESS); - *p = cpu_to_be32(access); - hdr->nops++; - hdr->replen += decode_access_maxsz; + encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); + encode_uint32(xdr, access); } static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_CLOSE); - *p++ = cpu_to_be32(arg->seqid->sequence->counter); - xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); - hdr->nops++; - hdr->replen += decode_close_maxsz; + encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); + encode_nfs4_seqid(xdr, arg->seqid); + encode_nfs4_stateid(xdr, arg->stateid); } static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 16); - *p++ = cpu_to_be32(OP_COMMIT); + encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); + p = reserve_space(xdr, 12); p = xdr_encode_hyper(p, args->offset); *p = cpu_to_be32(args->count); - hdr->nops++; - hdr->replen += decode_commit_maxsz; } static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(OP_CREATE); - *p = cpu_to_be32(create->ftype); + encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); + encode_uint32(xdr, create->ftype); switch (create->ftype) { case NF4LNK: @@ -1096,9 +1138,6 @@ static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg * } encode_string(xdr, create->name->len, create->name->name); - hdr->nops++; - hdr->replen += decode_create_maxsz; - encode_attrs(xdr, create->attrs, create->server); } @@ -1106,25 +1145,21 @@ static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct c { __be32 *p; - p = reserve_space(xdr, 12); - *p++ = cpu_to_be32(OP_GETATTR); + encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); + p = reserve_space(xdr, 8); *p++ = cpu_to_be32(1); *p = cpu_to_be32(bitmap); - hdr->nops++; - hdr->replen += decode_getattr_maxsz; } static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 16); - *p++ = cpu_to_be32(OP_GETATTR); + encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); + p = reserve_space(xdr, 12); *p++ = cpu_to_be32(2); *p++ = cpu_to_be32(bm0); *p = cpu_to_be32(bm1); - hdr->nops++; - hdr->replen += decode_getattr_maxsz; } static void @@ -1134,8 +1169,7 @@ encode_getattr_three(struct xdr_stream *xdr, { __be32 *p; - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_GETATTR); + encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); if (bm2) { p = reserve_space(xdr, 16); *p++ = cpu_to_be32(3); @@ -1152,8 +1186,6 @@ encode_getattr_three(struct xdr_stream *xdr, *p++ = cpu_to_be32(1); *p = cpu_to_be32(bm0); } - hdr->nops++; - hdr->replen += decode_getattr_maxsz; } static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) @@ -1179,23 +1211,13 @@ static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, stru static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_GETFH); - hdr->nops++; - hdr->replen += decode_getfh_maxsz; + encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); } static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8 + name->len); - *p++ = cpu_to_be32(OP_LINK); - xdr_encode_opaque(p, name->name, name->len); - hdr->nops++; - hdr->replen += decode_link_maxsz; + encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); + encode_string(xdr, name->len, name->name); } static inline int nfs4_lock_type(struct file_lock *fl, int block) @@ -1232,79 +1254,60 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args { __be32 *p; - p = reserve_space(xdr, 32); - *p++ = cpu_to_be32(OP_LOCK); + encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); + p = reserve_space(xdr, 28); *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); *p++ = cpu_to_be32(args->reclaim); p = xdr_encode_hyper(p, args->fl->fl_start); p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); *p = cpu_to_be32(args->new_lock_owner); if (args->new_lock_owner){ - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); - *p++ = cpu_to_be32(args->open_seqid->sequence->counter); - p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); + encode_nfs4_seqid(xdr, args->open_seqid); + encode_nfs4_stateid(xdr, args->open_stateid); + encode_nfs4_seqid(xdr, args->lock_seqid); encode_lockowner(xdr, &args->lock_owner); } else { - p = reserve_space(xdr, NFS4_STATEID_SIZE+4); - p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); - *p = cpu_to_be32(args->lock_seqid->sequence->counter); + encode_nfs4_stateid(xdr, args->lock_stateid); + encode_nfs4_seqid(xdr, args->lock_seqid); } - hdr->nops++; - hdr->replen += decode_lock_maxsz; } static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 24); - *p++ = cpu_to_be32(OP_LOCKT); + encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); + p = reserve_space(xdr, 20); *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); p = xdr_encode_hyper(p, args->fl->fl_start); p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); encode_lockowner(xdr, &args->lock_owner); - hdr->nops++; - hdr->replen += decode_lockt_maxsz; } static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16); - *p++ = cpu_to_be32(OP_LOCKU); - *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); - *p++ = cpu_to_be32(args->seqid->sequence->counter); - p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); + encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); + encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); + encode_nfs4_seqid(xdr, args->seqid); + encode_nfs4_stateid(xdr, args->stateid); + p = reserve_space(xdr, 16); p = xdr_encode_hyper(p, args->fl->fl_start); xdr_encode_hyper(p, nfs4_lock_length(args->fl)); - hdr->nops++; - hdr->replen += decode_locku_maxsz; } static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_RELEASE_LOCKOWNER); + encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); encode_lockowner(xdr, lowner); - hdr->nops++; - hdr->replen += decode_release_lockowner_maxsz; } static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) { - int len = name->len; - __be32 *p; - - p = reserve_space(xdr, 8 + len); - *p++ = cpu_to_be32(OP_LOOKUP); - xdr_encode_opaque(p, name->name, len); - hdr->nops++; - hdr->replen += decode_lookup_maxsz; + encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); + encode_string(xdr, name->len, name->name); } static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) @@ -1335,9 +1338,7 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, * owner 4 = 32 */ - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(OP_OPEN); - *p = cpu_to_be32(arg->seqid->sequence->counter); + encode_nfs4_seqid(xdr, arg->seqid); encode_share_access(xdr, arg->fmode); p = reserve_space(xdr, 32); p = xdr_encode_hyper(p, arg->clientid); @@ -1437,14 +1438,15 @@ static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struc { __be32 *p; - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); - xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); + p = reserve_space(xdr, 4); + *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); + encode_nfs4_stateid(xdr, stateid); encode_string(xdr, name->len, name->name); } static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) { + encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); encode_openhdr(xdr, arg); encode_opentype(xdr, arg); switch (arg->claim) { @@ -1460,88 +1462,64 @@ static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, default: BUG(); } - hdr->nops++; - hdr->replen += decode_open_maxsz; } static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); - *p++ = cpu_to_be32(OP_OPEN_CONFIRM); - p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); - *p = cpu_to_be32(arg->seqid->sequence->counter); - hdr->nops++; - hdr->replen += decode_open_confirm_maxsz; + encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); + encode_nfs4_stateid(xdr, arg->stateid); + encode_nfs4_seqid(xdr, arg->seqid); } static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); - *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); - p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); - *p = cpu_to_be32(arg->seqid->sequence->counter); + encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); + encode_nfs4_stateid(xdr, arg->stateid); + encode_nfs4_seqid(xdr, arg->seqid); encode_share_access(xdr, arg->fmode); - hdr->nops++; - hdr->replen += decode_open_downgrade_maxsz; } static void encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) { - int len = fh->size; - __be32 *p; - - p = reserve_space(xdr, 8 + len); - *p++ = cpu_to_be32(OP_PUTFH); - xdr_encode_opaque(p, fh->data, len); - hdr->nops++; - hdr->replen += decode_putfh_maxsz; + encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); + encode_string(xdr, fh->size, fh->data); } static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_PUTROOTFH); - hdr->nops++; - hdr->replen += decode_putrootfh_maxsz; + encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); } -static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid) +static void encode_open_stateid(struct xdr_stream *xdr, + const struct nfs_open_context *ctx, + const struct nfs_lock_context *l_ctx, + fmode_t fmode, + int zero_seqid) { nfs4_stateid stateid; - __be32 *p; - p = reserve_space(xdr, NFS4_STATEID_SIZE); if (ctx->state != NULL) { - nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); + nfs4_select_rw_stateid(&stateid, ctx->state, + fmode, l_ctx->lockowner, l_ctx->pid); if (zero_seqid) - stateid.stateid.seqid = 0; - xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); + stateid.seqid = 0; + encode_nfs4_stateid(xdr, &stateid); } else - xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); + encode_nfs4_stateid(xdr, &zero_stateid); } static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_READ); - - encode_stateid(xdr, args->context, args->lock_context, - hdr->minorversion); + encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); + encode_open_stateid(xdr, args->context, args->lock_context, + FMODE_READ, hdr->minorversion); p = reserve_space(xdr, 12); p = xdr_encode_hyper(p, args->offset); *p = cpu_to_be32(args->count); - hdr->nops++; - hdr->replen += decode_read_maxsz; } static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) @@ -1551,7 +1529,7 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg FATTR4_WORD1_MOUNTED_ON_FILEID, }; uint32_t dircount = readdir->count >> 1; - __be32 *p; + __be32 *p, verf[2]; if (readdir->plus) { attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| @@ -1566,80 +1544,54 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) attrs[0] |= FATTR4_WORD0_FILEID; - p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); - *p++ = cpu_to_be32(OP_READDIR); - p = xdr_encode_hyper(p, readdir->cookie); - p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); + encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); + encode_uint64(xdr, readdir->cookie); + encode_nfs4_verifier(xdr, &readdir->verifier); + p = reserve_space(xdr, 20); *p++ = cpu_to_be32(dircount); *p++ = cpu_to_be32(readdir->count); *p++ = cpu_to_be32(2); *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); - hdr->nops++; - hdr->replen += decode_readdir_maxsz; + memcpy(verf, readdir->verifier.data, sizeof(verf)); dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", __func__, (unsigned long long)readdir->cookie, - ((u32 *)readdir->verifier.data)[0], - ((u32 *)readdir->verifier.data)[1], + verf[0], verf[1], attrs[0] & readdir->bitmask[0], attrs[1] & readdir->bitmask[1]); } static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_READLINK); - hdr->nops++; - hdr->replen += decode_readlink_maxsz; + encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); } static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8 + name->len); - *p++ = cpu_to_be32(OP_REMOVE); - xdr_encode_opaque(p, name->name, name->len); - hdr->nops++; - hdr->replen += decode_remove_maxsz; + encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); + encode_string(xdr, name->len, name->name); } static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_RENAME); + encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); encode_string(xdr, oldname->len, oldname->name); encode_string(xdr, newname->len, newname->name); - hdr->nops++; - hdr->replen += decode_rename_maxsz; } -static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr) +static void encode_renew(struct xdr_stream *xdr, clientid4 clid, + struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 12); - *p++ = cpu_to_be32(OP_RENEW); - xdr_encode_hyper(p, client_stateid->cl_clientid); - hdr->nops++; - hdr->replen += decode_renew_maxsz; + encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); + encode_uint64(xdr, clid); } static void encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_RESTOREFH); - hdr->nops++; - hdr->replen += decode_restorefh_maxsz; + encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); } static void @@ -1647,9 +1599,8 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun { __be32 *p; - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_SETATTR); - xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); + encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); + encode_nfs4_stateid(xdr, &zero_stateid); p = reserve_space(xdr, 2*4); *p++ = cpu_to_be32(1); *p = cpu_to_be32(FATTR4_WORD0_ACL); @@ -1657,30 +1608,18 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun p = reserve_space(xdr, 4); *p = cpu_to_be32(arg->acl_len); xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); - hdr->nops++; - hdr->replen += decode_setacl_maxsz; } static void encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_SAVEFH); - hdr->nops++; - hdr->replen += decode_savefh_maxsz; + encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); } static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_SETATTR); - xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); - hdr->nops++; - hdr->replen += decode_setattr_maxsz; + encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); + encode_nfs4_stateid(xdr, &arg->stateid); encode_attrs(xdr, arg->iap, server); } @@ -1688,9 +1627,8 @@ static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclie { __be32 *p; - p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); - *p++ = cpu_to_be32(OP_SETCLIENTID); - xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); + encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); + encode_nfs4_verifier(xdr, setclientid->sc_verifier); encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); p = reserve_space(xdr, 4); @@ -1699,31 +1637,23 @@ static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclie encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); p = reserve_space(xdr, 4); *p = cpu_to_be32(setclientid->sc_cb_ident); - hdr->nops++; - hdr->replen += decode_setclientid_maxsz; } static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); - *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); - p = xdr_encode_hyper(p, arg->clientid); - xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE); - hdr->nops++; - hdr->replen += decode_setclientid_confirm_maxsz; + encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, + decode_setclientid_confirm_maxsz, hdr); + encode_uint64(xdr, arg->clientid); + encode_nfs4_verifier(xdr, &arg->confirm); } static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) { __be32 *p; - p = reserve_space(xdr, 4); - *p = cpu_to_be32(OP_WRITE); - - encode_stateid(xdr, args->context, args->lock_context, - hdr->minorversion); + encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); + encode_open_stateid(xdr, args->context, args->lock_context, + FMODE_WRITE, hdr->minorversion); p = reserve_space(xdr, 16); p = xdr_encode_hyper(p, args->offset); @@ -1731,32 +1661,18 @@ static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *arg *p = cpu_to_be32(args->count); xdr_write_pages(xdr, args->pages, args->pgbase, args->count); - hdr->nops++; - hdr->replen += decode_write_maxsz; } static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); - - *p++ = cpu_to_be32(OP_DELEGRETURN); - xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); - hdr->nops++; - hdr->replen += decode_delegreturn_maxsz; + encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); + encode_nfs4_stateid(xdr, stateid); } static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) { - int len = name->len; - __be32 *p; - - p = reserve_space(xdr, 8 + len); - *p++ = cpu_to_be32(OP_SECINFO); - xdr_encode_opaque(p, name->name, len); - hdr->nops++; - hdr->replen += decode_secinfo_maxsz; + encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); + encode_string(xdr, name->len, name->name); } #if defined(CONFIG_NFS_V4_1) @@ -1766,19 +1682,39 @@ static void encode_exchange_id(struct xdr_stream *xdr, struct compound_hdr *hdr) { __be32 *p; + char impl_name[NFS4_OPAQUE_LIMIT]; + int len = 0; - p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); - *p++ = cpu_to_be32(OP_EXCHANGE_ID); - xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); + encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); + encode_nfs4_verifier(xdr, args->verifier); encode_string(xdr, args->id_len, args->id); p = reserve_space(xdr, 12); *p++ = cpu_to_be32(args->flags); *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ - *p = cpu_to_be32(0); /* zero length implementation id array */ - hdr->nops++; - hdr->replen += decode_exchange_id_maxsz; + + if (send_implementation_id && + sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && + sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) + <= NFS4_OPAQUE_LIMIT + 1) + len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", + utsname()->sysname, utsname()->release, + utsname()->version, utsname()->machine); + + if (len > 0) { + *p = cpu_to_be32(1); /* implementation id array length=1 */ + + encode_string(xdr, + sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, + CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); + encode_string(xdr, len, impl_name); + /* just send zeros for nii_date - the date is in nii_name */ + p = reserve_space(xdr, 12); + p = xdr_encode_hyper(p, 0); + *p = cpu_to_be32(0); + } else + *p = cpu_to_be32(0); /* implementation id array length=0 */ } static void encode_create_session(struct xdr_stream *xdr, @@ -1801,8 +1737,8 @@ static void encode_create_session(struct xdr_stream *xdr, len = scnprintf(machine_name, sizeof(machine_name), "%s", clp->cl_ipaddr); - p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12); - *p++ = cpu_to_be32(OP_CREATE_SESSION); + encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); + p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12); p = xdr_encode_hyper(p, clp->cl_clientid); *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ *p++ = cpu_to_be32(args->flags); /*flags */ @@ -1835,33 +1771,22 @@ static void encode_create_session(struct xdr_stream *xdr, *p++ = cpu_to_be32(0); /* UID */ *p++ = cpu_to_be32(0); /* GID */ *p = cpu_to_be32(0); /* No more gids */ - hdr->nops++; - hdr->replen += decode_create_session_maxsz; } static void encode_destroy_session(struct xdr_stream *xdr, struct nfs4_session *session, struct compound_hdr *hdr) { - __be32 *p; - p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN); - *p++ = cpu_to_be32(OP_DESTROY_SESSION); - xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); - hdr->nops++; - hdr->replen += decode_destroy_session_maxsz; + encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); + encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); } static void encode_reclaim_complete(struct xdr_stream *xdr, struct nfs41_reclaim_complete_args *args, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); - *p++ = cpu_to_be32(args->one_fs); - hdr->nops++; - hdr->replen += decode_reclaim_complete_maxsz; + encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); + encode_uint32(xdr, args->one_fs); } #endif /* CONFIG_NFS_V4_1 */ @@ -1883,8 +1808,7 @@ static void encode_sequence(struct xdr_stream *xdr, WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); slot = tp->slots + args->sa_slotid; - p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16); - *p++ = cpu_to_be32(OP_SEQUENCE); + encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); /* * Sessionid + seqid + slotid + max slotid + cache_this @@ -1898,13 +1822,12 @@ static void encode_sequence(struct xdr_stream *xdr, ((u32 *)session->sess_id.data)[3], slot->seq_nr, args->sa_slotid, tp->highest_used_slotid, args->sa_cache_this); + p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); *p++ = cpu_to_be32(slot->seq_nr); *p++ = cpu_to_be32(args->sa_slotid); *p++ = cpu_to_be32(tp->highest_used_slotid); *p = cpu_to_be32(args->sa_cache_this); - hdr->nops++; - hdr->replen += decode_sequence_maxsz; #endif /* CONFIG_NFS_V4_1 */ } @@ -1919,14 +1842,12 @@ encode_getdevicelist(struct xdr_stream *xdr, .data = "dummmmmy", }; - p = reserve_space(xdr, 20); - *p++ = cpu_to_be32(OP_GETDEVICELIST); + encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr); + p = reserve_space(xdr, 16); *p++ = cpu_to_be32(args->layoutclass); *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); xdr_encode_hyper(p, 0ULL); /* cookie */ encode_nfs4_verifier(xdr, &dummy); - hdr->nops++; - hdr->replen += decode_getdevicelist_maxsz; } static void @@ -1936,15 +1857,13 @@ encode_getdeviceinfo(struct xdr_stream *xdr, { __be32 *p; - p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE); - *p++ = cpu_to_be32(OP_GETDEVICEINFO); + encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); + p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE); p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, NFS4_DEVICEID4_SIZE); *p++ = cpu_to_be32(args->pdev->layout_type); *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ *p++ = cpu_to_be32(0); /* bitmap length 0 */ - hdr->nops++; - hdr->replen += decode_getdeviceinfo_maxsz; } static void @@ -1954,16 +1873,16 @@ encode_layoutget(struct xdr_stream *xdr, { __be32 *p; - p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_LAYOUTGET); + encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); + p = reserve_space(xdr, 36); *p++ = cpu_to_be32(0); /* Signal layout available */ *p++ = cpu_to_be32(args->type); *p++ = cpu_to_be32(args->range.iomode); p = xdr_encode_hyper(p, args->range.offset); p = xdr_encode_hyper(p, args->range.length); p = xdr_encode_hyper(p, args->minlength); - p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); - *p = cpu_to_be32(args->maxcount); + encode_nfs4_stateid(xdr, &args->stateid); + encode_uint32(xdr, args->maxcount); dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", __func__, @@ -1972,8 +1891,6 @@ encode_layoutget(struct xdr_stream *xdr, (unsigned long)args->range.offset, (unsigned long)args->range.length, args->maxcount); - hdr->nops++; - hdr->replen += decode_layoutget_maxsz; } static int @@ -1987,13 +1904,14 @@ encode_layoutcommit(struct xdr_stream *xdr, dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, NFS_SERVER(args->inode)->pnfs_curr_ld->id); - p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_LAYOUTCOMMIT); + encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); + p = reserve_space(xdr, 20); /* Only whole file layouts */ p = xdr_encode_hyper(p, 0); /* offset */ p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ - *p++ = cpu_to_be32(0); /* reclaim */ - p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE); + *p = cpu_to_be32(0); /* reclaim */ + encode_nfs4_stateid(xdr, &args->stateid); + p = reserve_space(xdr, 20); *p++ = cpu_to_be32(1); /* newoffset = TRUE */ p = xdr_encode_hyper(p, args->lastbytewritten); *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ @@ -2002,13 +1920,9 @@ encode_layoutcommit(struct xdr_stream *xdr, if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( NFS_I(inode)->layout, xdr, args); - else { - p = reserve_space(xdr, 4); - *p = cpu_to_be32(0); /* no layout-type payload */ - } + else + encode_uint32(xdr, 0); /* no layout-type payload */ - hdr->nops++; - hdr->replen += decode_layoutcommit_maxsz; return 0; } @@ -2019,27 +1933,23 @@ encode_layoutreturn(struct xdr_stream *xdr, { __be32 *p; - p = reserve_space(xdr, 20); - *p++ = cpu_to_be32(OP_LAYOUTRETURN); + encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); + p = reserve_space(xdr, 16); *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ *p++ = cpu_to_be32(args->layout_type); *p++ = cpu_to_be32(IOMODE_ANY); *p = cpu_to_be32(RETURN_FILE); - p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE); + p = reserve_space(xdr, 16); p = xdr_encode_hyper(p, 0); p = xdr_encode_hyper(p, NFS4_MAX_UINT64); spin_lock(&args->inode->i_lock); - xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); + encode_nfs4_stateid(xdr, &args->stateid); spin_unlock(&args->inode->i_lock); if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( NFS_I(args->inode)->layout, xdr, args); - } else { - p = reserve_space(xdr, 4); - *p = cpu_to_be32(0); - } - hdr->nops++; - hdr->replen += decode_layoutreturn_maxsz; + } else + encode_uint32(xdr, 0); } static int @@ -2047,12 +1957,8 @@ encode_secinfo_no_name(struct xdr_stream *xdr, const struct nfs41_secinfo_no_name_args *args, struct compound_hdr *hdr) { - __be32 *p; - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(OP_SECINFO_NO_NAME); - *p++ = cpu_to_be32(args->style); - hdr->nops++; - hdr->replen += decode_secinfo_no_name_maxsz; + encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); + encode_uint32(xdr, args->style); return 0; } @@ -2060,26 +1966,17 @@ static void encode_test_stateid(struct xdr_stream *xdr, struct nfs41_test_stateid_args *args, struct compound_hdr *hdr) { - __be32 *p; - - p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_TEST_STATEID); - *p++ = cpu_to_be32(1); - xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); - hdr->nops++; - hdr->replen += decode_test_stateid_maxsz; + encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); + encode_uint32(xdr, 1); + encode_nfs4_stateid(xdr, args->stateid); } static void encode_free_stateid(struct xdr_stream *xdr, struct nfs41_free_stateid_args *args, struct compound_hdr *hdr) { - __be32 *p; - p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE); - *p++ = cpu_to_be32(OP_FREE_STATEID); - xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); - hdr->nops++; - hdr->replen += decode_free_stateid_maxsz; + encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); + encode_nfs4_stateid(xdr, args->stateid); } #endif /* CONFIG_NFS_V4_1 */ @@ -2522,7 +2419,6 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, xdr_inline_pages(&req->rq_rcv_buf, replen << 2, args->acl_pages, args->acl_pgbase, args->acl_len); - xdr_set_scratch_buffer(xdr, page_address(args->acl_scratch), PAGE_SIZE); encode_nops(&hdr); } @@ -2634,6 +2530,7 @@ static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fhandle, &hdr); encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| + FATTR4_WORD0_FH_EXPIRE_TYPE| FATTR4_WORD0_LINK_SUPPORT| FATTR4_WORD0_SYMLINK_SUPPORT| FATTR4_WORD0_ACLSUPPORT, &hdr); @@ -2651,7 +2548,7 @@ static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, }; encode_compound_hdr(xdr, req, &hdr); - encode_renew(xdr, clp, &hdr); + encode_renew(xdr, clp->cl_clientid, &hdr); encode_nops(&hdr); } @@ -3181,6 +3078,28 @@ out_overflow: return -EIO; } +static int decode_attr_fh_expire_type(struct xdr_stream *xdr, + uint32_t *bitmap, uint32_t *type) +{ + __be32 *p; + + *type = 0; + if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) + return -EIO; + if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + *type = be32_to_cpup(p); + bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; + } + dprintk("%s: expire type=0x%x\n", __func__, *type); + return 0; +out_overflow: + print_overflow_msg(__func__, xdr); + return -EIO; +} + static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) { __be32 *p; @@ -3514,16 +3433,17 @@ static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) n = be32_to_cpup(p); if (n == 0) goto root_path; - dprintk("path "); + dprintk("pathname4: "); path->ncomponents = 0; while (path->ncomponents < n) { struct nfs4_string *component = &path->components[path->ncomponents]; status = decode_opaque_inline(xdr, &component->len, &component->data); if (unlikely(status != 0)) goto out_eio; - if (path->ncomponents != n) - dprintk("/"); - dprintk("%s", component->data); + ifdebug (XDR) + pr_cont("%s%.*s ", + (path->ncomponents != n ? "/ " : ""), + component->len, component->data); if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) path->ncomponents++; else { @@ -3532,14 +3452,13 @@ static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) } } out: - dprintk("\n"); return status; root_path: /* a root pathname is sent as a zero component4 */ path->ncomponents = 1; path->components[0].len=0; path->components[0].data=NULL; - dprintk("path /\n"); + dprintk("pathname4: /\n"); goto out; out_eio: dprintk(" status %d", status); @@ -3561,7 +3480,11 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st status = 0; if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) goto out; - dprintk("%s: fsroot ", __func__); + status = -EIO; + /* Ignore borken servers that return unrequested attrs */ + if (unlikely(res == NULL)) + goto out; + dprintk("%s: fsroot:\n", __func__); status = decode_pathname(xdr, &res->fs_path); if (unlikely(status != 0)) goto out; @@ -3582,7 +3505,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st m = be32_to_cpup(p); loc->nservers = 0; - dprintk("%s: servers ", __func__); + dprintk("%s: servers:\n", __func__); while (loc->nservers < m) { struct nfs4_string *server = &loc->servers[loc->nservers]; status = decode_opaque_inline(xdr, &server->len, &server->data); @@ -3614,7 +3537,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st res->nlocations++; } if (res->nlocations != 0) - status = NFS_ATTR_FATTR_V4_REFERRAL; + status = NFS_ATTR_FATTR_V4_LOCATIONS; out: dprintk("%s: fs_locations done, error = %d\n", __func__, status); return status; @@ -4158,7 +4081,7 @@ static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { - return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); + return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); } static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) @@ -4175,7 +4098,7 @@ static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) static int decode_verifier(struct xdr_stream *xdr, void *verifier) { - return decode_opaque_fixed(xdr, verifier, 8); + return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); } static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) @@ -4225,6 +4148,9 @@ static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_re goto xdr_error; if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) goto xdr_error; + if ((status = decode_attr_fh_expire_type(xdr, bitmap, + &res->fh_expire_type)) != 0) + goto xdr_error; if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) goto xdr_error; if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) @@ -4295,6 +4221,7 @@ xdr_error: static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fattr *fattr, struct nfs_fh *fh, + struct nfs4_fs_locations *fs_loc, const struct nfs_server *server) { int status; @@ -4342,9 +4269,7 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, goto xdr_error; fattr->valid |= status; - status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr, - struct nfs4_fs_locations, - fattr)); + status = decode_attr_fs_locations(xdr, bitmap, fs_loc); if (status < 0) goto xdr_error; fattr->valid |= status; @@ -4408,7 +4333,8 @@ xdr_error: } static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, - struct nfs_fh *fh, const struct nfs_server *server) + struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, + const struct nfs_server *server) { __be32 *savep; uint32_t attrlen, @@ -4427,7 +4353,7 @@ static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fat if (status < 0) goto xdr_error; - status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server); + status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); if (status < 0) goto xdr_error; @@ -4440,7 +4366,7 @@ xdr_error: static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server) { - return decode_getfattr_generic(xdr, fattr, NULL, server); + return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); } /* @@ -4464,8 +4390,8 @@ static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, return 0; } if (num > 1) - printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers " - "per filesystem not supported\n", __func__); + printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " + "drivers per filesystem not supported\n", __func__); /* Decode and set first layout type, move xdr->p past unused types */ p = xdr_inline_decode(xdr, num * 4); @@ -4864,17 +4790,16 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n size_t hdrlen; u32 recvd, pglen = rcvbuf->page_len; int status; + __be32 verf[2]; status = decode_op_hdr(xdr, OP_READDIR); if (!status) status = decode_verifier(xdr, readdir->verifier.data); if (unlikely(status)) return status; + memcpy(verf, readdir->verifier.data, sizeof(verf)); dprintk("%s: verifier = %08x:%08x\n", - __func__, - ((u32 *)readdir->verifier.data)[0], - ((u32 *)readdir->verifier.data)[1]); - + __func__, verf[0], verf[1]); hdrlen = (char *) xdr->p - (char *) iov->iov_base; recvd = rcvbuf->len - hdrlen; @@ -5121,7 +5046,7 @@ static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) goto out_overflow; res->count = be32_to_cpup(p++); res->verf->committed = be32_to_cpup(p++); - memcpy(res->verf->verifier, p, 8); + memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE); return 0; out_overflow: print_overflow_msg(__func__, xdr); @@ -5215,6 +5140,7 @@ static int decode_exchange_id(struct xdr_stream *xdr, char *dummy_str; int status; struct nfs_client *clp = res->client; + uint32_t impl_id_count; status = decode_op_hdr(xdr, OP_EXCHANGE_ID); if (status) @@ -5256,11 +5182,38 @@ static int decode_exchange_id(struct xdr_stream *xdr, memcpy(res->server_scope->server_scope, dummy_str, dummy); res->server_scope->server_scope_sz = dummy; - /* Throw away Implementation id array */ - status = decode_opaque_inline(xdr, &dummy, &dummy_str); - if (unlikely(status)) - return status; + /* Implementation Id */ + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + impl_id_count = be32_to_cpup(p++); + if (impl_id_count) { + /* nii_domain */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->domain, dummy_str, dummy); + + /* nii_name */ + status = decode_opaque_inline(xdr, &dummy, &dummy_str); + if (unlikely(status)) + return status; + if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) + return -EIO; + memcpy(res->impl_id->name, dummy_str, dummy); + + /* nii_date */ + p = xdr_inline_decode(xdr, 12); + if (unlikely(!p)) + goto out_overflow; + p = xdr_decode_hyper(p, &res->impl_id->date.seconds); + res->impl_id->date.nseconds = be32_to_cpup(p); + + /* if there's more than one entry, ignore the rest */ + } return 0; out_overflow: print_overflow_msg(__func__, xdr); @@ -5286,8 +5239,8 @@ static int decode_chan_attrs(struct xdr_stream *xdr, attrs->max_reqs = be32_to_cpup(p++); nr_attrs = be32_to_cpup(p); if (unlikely(nr_attrs > 1)) { - printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", - __func__, nr_attrs); + printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " + "count %u\n", __func__, nr_attrs); return -EINVAL; } if (nr_attrs == 1) { @@ -5437,14 +5390,14 @@ static int decode_getdevicelist(struct xdr_stream *xdr, p += 2; /* Read verifier */ - p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8); + p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE); res->num_devs = be32_to_cpup(p); dprintk("%s: num_dev %d\n", __func__, res->num_devs); if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { - printk(KERN_ERR "%s too many result dev_num %u\n", + printk(KERN_ERR "NFS: %s too many result dev_num %u\n", __func__, res->num_devs); return -EIO; } @@ -5538,11 +5491,14 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, status = decode_op_hdr(xdr, OP_LAYOUTGET); if (status) return status; - p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE); + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) + goto out_overflow; + res->return_on_close = be32_to_cpup(p); + decode_stateid(xdr, &res->stateid); + p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; - res->return_on_close = be32_to_cpup(p++); - p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE); layout_count = be32_to_cpup(p); if (!layout_count) { dprintk("%s: server responded with empty layout array\n", @@ -5667,7 +5623,8 @@ static int decode_test_stateid(struct xdr_stream *xdr, if (unlikely(!p)) goto out_overflow; res->status = be32_to_cpup(p++); - return res->status; + + return status; out_overflow: print_overflow_msg(__func__, xdr); out: @@ -6032,6 +5989,10 @@ nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, struct compound_hdr hdr; int status; + if (res->acl_scratch != NULL) { + void *p = page_address(res->acl_scratch); + xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); + } status = decode_compound_hdr(xdr, &hdr); if (status) goto out; @@ -6580,8 +6541,9 @@ static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, if (status) goto out; xdr_enter_page(xdr, PAGE_SIZE); - status = decode_getfattr(xdr, &res->fs_locations->fattr, - res->fs_locations->server); + status = decode_getfattr_generic(xdr, &res->fs_locations->fattr, + NULL, res->fs_locations, + res->fs_locations->server); out: return status; } @@ -6961,7 +6923,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, goto out_overflow; if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, - entry->server) < 0) + NULL, entry->server) < 0) goto out_overflow; if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) entry->ino = entry->fattr->mounted_on_fileid; @@ -7109,7 +7071,7 @@ struct rpc_procinfo nfs4_procedures[] = { #endif /* CONFIG_NFS_V4_1 */ }; -struct rpc_version nfs_version4 = { +const struct rpc_version nfs_version4 = { .number = 4, .nrprocs = ARRAY_SIZE(nfs4_procedures), .procs = nfs4_procedures diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c index c4744e1d513..cd3c910d2d1 100644 --- a/fs/nfs/nfsroot.c +++ b/fs/nfs/nfsroot.c @@ -104,7 +104,7 @@ static char nfs_export_path[NFS_MAXPATHLEN + 1] __initdata = ""; /* server:export path string passed to super.c */ static char nfs_root_device[NFS_MAXPATHLEN + 1] __initdata = ""; -#ifdef RPC_DEBUG +#ifdef NFS_DEBUG /* * When the "nfsrootdebug" kernel command line option is specified, * enable debugging messages for NFSROOT. diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 55d01280a60..4bff4a3dab4 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -137,6 +137,7 @@ static int objio_devices_lookup(struct pnfs_layout_hdr *pnfslay, struct objio_dev_ent *ode; struct osd_dev *od; struct osd_dev_info odi; + bool retry_flag = true; int err; ode = _dev_list_find(NFS_SERVER(pnfslay->plh_inode), d_id); @@ -171,10 +172,18 @@ static int objio_devices_lookup(struct pnfs_layout_hdr *pnfslay, goto out; } +retry_lookup: od = osduld_info_lookup(&odi); if (unlikely(IS_ERR(od))) { err = PTR_ERR(od); dprintk("%s: osduld_info_lookup => %d\n", __func__, err); + if (err == -ENODEV && retry_flag) { + err = objlayout_autologin(deviceaddr); + if (likely(!err)) { + retry_flag = false; + goto retry_lookup; + } + } goto out; } @@ -205,25 +214,36 @@ static void copy_single_comp(struct ore_components *oc, unsigned c, int __alloc_objio_seg(unsigned numdevs, gfp_t gfp_flags, struct objio_segment **pseg) { - struct __alloc_objio_segment { - struct objio_segment olseg; - struct ore_dev *ods[numdevs]; - struct ore_comp comps[numdevs]; - } *aolseg; +/* This is the in memory structure of the objio_segment + * + * struct __alloc_objio_segment { + * struct objio_segment olseg; + * struct ore_dev *ods[numdevs]; + * struct ore_comp comps[numdevs]; + * } *aolseg; + * NOTE: The code as above compiles and runs perfectly. It is elegant, + * type safe and compact. At some Past time Linus has decided he does not + * like variable length arrays, For the sake of this principal we uglify + * the code as below. + */ + struct objio_segment *lseg; + size_t lseg_size = sizeof(*lseg) + + numdevs * sizeof(lseg->oc.ods[0]) + + numdevs * sizeof(*lseg->oc.comps); - aolseg = kzalloc(sizeof(*aolseg), gfp_flags); - if (unlikely(!aolseg)) { + lseg = kzalloc(lseg_size, gfp_flags); + if (unlikely(!lseg)) { dprintk("%s: Faild allocation numdevs=%d size=%zd\n", __func__, - numdevs, sizeof(*aolseg)); + numdevs, lseg_size); return -ENOMEM; } - aolseg->olseg.oc.numdevs = numdevs; - aolseg->olseg.oc.single_comp = EC_MULTPLE_COMPS; - aolseg->olseg.oc.comps = aolseg->comps; - aolseg->olseg.oc.ods = aolseg->ods; + lseg->oc.numdevs = numdevs; + lseg->oc.single_comp = EC_MULTPLE_COMPS; + lseg->oc.ods = (void *)(lseg + 1); + lseg->oc.comps = (void *)(lseg->oc.ods + numdevs); - *pseg = &aolseg->olseg; + *pseg = lseg; return 0; } @@ -582,10 +602,10 @@ objlayout_init(void) if (ret) printk(KERN_INFO - "%s: Registering OSD pNFS Layout Driver failed: error=%d\n", + "NFS: %s: Registering OSD pNFS Layout Driver failed: error=%d\n", __func__, ret); else - printk(KERN_INFO "%s: Registered OSD pNFS Layout Driver\n", + printk(KERN_INFO "NFS: %s: Registered OSD pNFS Layout Driver\n", __func__); return ret; } @@ -594,7 +614,7 @@ static void __exit objlayout_exit(void) { pnfs_unregister_layoutdriver(&objlayout_type); - printk(KERN_INFO "%s: Unregistered OSD pNFS Layout Driver\n", + printk(KERN_INFO "NFS: %s: Unregistered OSD pNFS Layout Driver\n", __func__); } diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index b3c29039f5b..8d45f1c318c 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -37,6 +37,9 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <linux/kmod.h> +#include <linux/moduleparam.h> +#include <linux/ratelimit.h> #include <scsi/osd_initiator.h> #include "objlayout.h" @@ -156,7 +159,7 @@ last_byte_offset(u64 start, u64 len) return end > start ? end - 1 : NFS4_MAX_UINT64; } -void _fix_verify_io_params(struct pnfs_layout_segment *lseg, +static void _fix_verify_io_params(struct pnfs_layout_segment *lseg, struct page ***p_pages, unsigned *p_pgbase, u64 offset, unsigned long count) { @@ -490,9 +493,9 @@ encode_accumulated_error(struct objlayout *objlay, __be32 *p) if (!ioerr->oer_errno) continue; - printk(KERN_ERR "%s: err[%d]: errno=%d is_write=%d " - "dev(%llx:%llx) par=0x%llx obj=0x%llx " - "offset=0x%llx length=0x%llx\n", + printk(KERN_ERR "NFS: %s: err[%d]: errno=%d " + "is_write=%d dev(%llx:%llx) par=0x%llx " + "obj=0x%llx offset=0x%llx length=0x%llx\n", __func__, i, ioerr->oer_errno, ioerr->oer_iswrite, _DEVID_LO(&ioerr->oer_component.oid_device_id), @@ -651,3 +654,134 @@ void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr) __free_page(odi->page); kfree(odi); } + +enum { + OBJLAYOUT_MAX_URI_LEN = 256, OBJLAYOUT_MAX_OSDNAME_LEN = 64, + OBJLAYOUT_MAX_SYSID_HEX_LEN = OSD_SYSTEMID_LEN * 2 + 1, + OSD_LOGIN_UPCALL_PATHLEN = 256 +}; + +static char osd_login_prog[OSD_LOGIN_UPCALL_PATHLEN] = "/sbin/osd_login"; + +module_param_string(osd_login_prog, osd_login_prog, sizeof(osd_login_prog), + 0600); +MODULE_PARM_DESC(osd_login_prog, "Path to the osd_login upcall program"); + +struct __auto_login { + char uri[OBJLAYOUT_MAX_URI_LEN]; + char osdname[OBJLAYOUT_MAX_OSDNAME_LEN]; + char systemid_hex[OBJLAYOUT_MAX_SYSID_HEX_LEN]; +}; + +static int __objlayout_upcall(struct __auto_login *login) +{ + static char *envp[] = { "HOME=/", + "TERM=linux", + "PATH=/sbin:/usr/sbin:/bin:/usr/bin", + NULL + }; + char *argv[8]; + int ret; + + if (unlikely(!osd_login_prog[0])) { + dprintk("%s: osd_login_prog is disabled\n", __func__); + return -EACCES; + } + + dprintk("%s uri: %s\n", __func__, login->uri); + dprintk("%s osdname %s\n", __func__, login->osdname); + dprintk("%s systemid_hex %s\n", __func__, login->systemid_hex); + + argv[0] = (char *)osd_login_prog; + argv[1] = "-u"; + argv[2] = login->uri; + argv[3] = "-o"; + argv[4] = login->osdname; + argv[5] = "-s"; + argv[6] = login->systemid_hex; + argv[7] = NULL; + + ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC); + /* + * Disable the upcall mechanism if we're getting an ENOENT or + * EACCES error. The admin can re-enable it on the fly by using + * sysfs to set the objlayoutdriver.osd_login_prog module parameter once + * the problem has been fixed. + */ + if (ret == -ENOENT || ret == -EACCES) { + printk(KERN_ERR "PNFS-OBJ: %s was not found please set " + "objlayoutdriver.osd_login_prog kernel parameter!\n", + osd_login_prog); + osd_login_prog[0] = '\0'; + } + dprintk("%s %s return value: %d\n", __func__, osd_login_prog, ret); + + return ret; +} + +/* Assume dest is all zeros */ +static void __copy_nfsS_and_zero_terminate(struct nfs4_string s, + char *dest, int max_len, + const char *var_name) +{ + if (!s.len) + return; + + if (s.len >= max_len) { + pr_warn_ratelimited( + "objlayout_autologin: %s: s.len(%d) >= max_len(%d)", + var_name, s.len, max_len); + s.len = max_len - 1; /* space for null terminator */ + } + + memcpy(dest, s.data, s.len); +} + +/* Assume sysid is all zeros */ +static void _sysid_2_hex(struct nfs4_string s, + char sysid[OBJLAYOUT_MAX_SYSID_HEX_LEN]) +{ + int i; + char *cur; + + if (!s.len) + return; + + if (s.len != OSD_SYSTEMID_LEN) { + pr_warn_ratelimited( + "objlayout_autologin: systemid_len(%d) != OSD_SYSTEMID_LEN", + s.len); + if (s.len > OSD_SYSTEMID_LEN) + s.len = OSD_SYSTEMID_LEN; + } + + cur = sysid; + for (i = 0; i < s.len; i++) + cur = hex_byte_pack(cur, s.data[i]); +} + +int objlayout_autologin(struct pnfs_osd_deviceaddr *deviceaddr) +{ + int rc; + struct __auto_login login; + + if (!deviceaddr->oda_targetaddr.ota_netaddr.r_addr.len) + return -ENODEV; + + memset(&login, 0, sizeof(login)); + __copy_nfsS_and_zero_terminate( + deviceaddr->oda_targetaddr.ota_netaddr.r_addr, + login.uri, sizeof(login.uri), "URI"); + + __copy_nfsS_and_zero_terminate( + deviceaddr->oda_osdname, + login.osdname, sizeof(login.osdname), "OSDNAME"); + + _sysid_2_hex(deviceaddr->oda_systemid, login.systemid_hex); + + rc = __objlayout_upcall(&login); + if (rc > 0) /* script returns positive values */ + rc = -ENODEV; + + return rc; +} diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h index 8ec34727ed2..880ba086be9 100644 --- a/fs/nfs/objlayout/objlayout.h +++ b/fs/nfs/objlayout/objlayout.h @@ -184,4 +184,6 @@ extern void objlayout_encode_layoutreturn( struct xdr_stream *, const struct nfs4_layoutreturn_args *); +extern int objlayout_autologin(struct pnfs_osd_deviceaddr *deviceaddr); + #endif /* _OBJLAYOUT_H */ diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 5668f7c54c4..d21fceaa9f6 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -13,6 +13,7 @@ #include <linux/file.h> #include <linux/sched.h> #include <linux/sunrpc/clnt.h> +#include <linux/nfs.h> #include <linux/nfs3.h> #include <linux/nfs4.h> #include <linux/nfs_page.h> @@ -106,36 +107,6 @@ void nfs_unlock_request(struct nfs_page *req) nfs_release_request(req); } -/** - * nfs_set_page_tag_locked - Tag a request as locked - * @req: - */ -int nfs_set_page_tag_locked(struct nfs_page *req) -{ - if (!nfs_lock_request_dontget(req)) - return 0; - if (test_bit(PG_MAPPED, &req->wb_flags)) - radix_tree_tag_set(&NFS_I(req->wb_context->dentry->d_inode)->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); - return 1; -} - -/** - * nfs_clear_page_tag_locked - Clear request tag and wake up sleepers - */ -void nfs_clear_page_tag_locked(struct nfs_page *req) -{ - if (test_bit(PG_MAPPED, &req->wb_flags)) { - struct inode *inode = req->wb_context->dentry->d_inode; - struct nfs_inode *nfsi = NFS_I(inode); - - spin_lock(&inode->i_lock); - radix_tree_tag_clear(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); - nfs_unlock_request(req); - spin_unlock(&inode->i_lock); - } else - nfs_unlock_request(req); -} - /* * nfs_clear_request - Free up all resources allocated to the request * @req: @@ -425,67 +396,6 @@ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index) } } -#define NFS_SCAN_MAXENTRIES 16 -/** - * nfs_scan_list - Scan a list for matching requests - * @nfsi: NFS inode - * @dst: Destination list - * @idx_start: lower bound of page->index to scan - * @npages: idx_start + npages sets the upper bound to scan. - * @tag: tag to scan for - * - * Moves elements from one of the inode request lists. - * If the number of requests is set to 0, the entire address_space - * starting at index idx_start, is scanned. - * The requests are *not* checked to ensure that they form a contiguous set. - * You must be holding the inode's i_lock when calling this function - */ -int nfs_scan_list(struct nfs_inode *nfsi, - struct list_head *dst, pgoff_t idx_start, - unsigned int npages, int tag) -{ - struct nfs_page *pgvec[NFS_SCAN_MAXENTRIES]; - struct nfs_page *req; - pgoff_t idx_end; - int found, i; - int res; - struct list_head *list; - - res = 0; - if (npages == 0) - idx_end = ~0; - else - idx_end = idx_start + npages - 1; - - for (;;) { - found = radix_tree_gang_lookup_tag(&nfsi->nfs_page_tree, - (void **)&pgvec[0], idx_start, - NFS_SCAN_MAXENTRIES, tag); - if (found <= 0) - break; - for (i = 0; i < found; i++) { - req = pgvec[i]; - if (req->wb_index > idx_end) - goto out; - idx_start = req->wb_index + 1; - if (nfs_set_page_tag_locked(req)) { - kref_get(&req->wb_kref); - radix_tree_tag_clear(&nfsi->nfs_page_tree, - req->wb_index, tag); - list = pnfs_choose_commit_list(req, dst); - nfs_list_add_request(req, list); - res++; - if (res == INT_MAX) - goto out; - } - } - /* for latency reduction */ - cond_resched_lock(&nfsi->vfs_inode.i_lock); - } -out: - return res; -} - int __init nfs_init_nfspagecache(void) { nfs_page_cachep = kmem_cache_create("nfs_page", diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 17149a49006..b5d45158694 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -101,8 +101,8 @@ set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh, goto out_no_driver; if (!(server->nfs_client->cl_exchange_flags & (EXCHGID4_FLAG_USE_NON_PNFS | EXCHGID4_FLAG_USE_PNFS_MDS))) { - printk(KERN_ERR "%s: id %u cl_exchange_flags 0x%x\n", __func__, - id, server->nfs_client->cl_exchange_flags); + printk(KERN_ERR "NFS: %s: id %u cl_exchange_flags 0x%x\n", + __func__, id, server->nfs_client->cl_exchange_flags); goto out_no_driver; } ld_type = find_pnfs_driver(id); @@ -122,8 +122,8 @@ set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh, server->pnfs_curr_ld = ld_type; if (ld_type->set_layoutdriver && ld_type->set_layoutdriver(server, mntfh)) { - printk(KERN_ERR "%s: Error initializing pNFS layout driver %u.\n", - __func__, id); + printk(KERN_ERR "NFS: %s: Error initializing pNFS layout " + "driver %u.\n", __func__, id); module_put(ld_type->owner); goto out_no_driver; } @@ -143,11 +143,11 @@ pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *ld_type) struct pnfs_layoutdriver_type *tmp; if (ld_type->id == 0) { - printk(KERN_ERR "%s id 0 is reserved\n", __func__); + printk(KERN_ERR "NFS: %s id 0 is reserved\n", __func__); return status; } if (!ld_type->alloc_lseg || !ld_type->free_lseg) { - printk(KERN_ERR "%s Layout driver must provide " + printk(KERN_ERR "NFS: %s Layout driver must provide " "alloc_lseg and free_lseg.\n", __func__); return status; } @@ -160,7 +160,7 @@ pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *ld_type) dprintk("%s Registering id:%u name:%s\n", __func__, ld_type->id, ld_type->name); } else { - printk(KERN_ERR "%s Module with id %d already loaded!\n", + printk(KERN_ERR "NFS: %s Module with id %d already loaded!\n", __func__, ld_type->id); } spin_unlock(&pnfs_spinlock); @@ -496,12 +496,12 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, { u32 oldseq, newseq; - oldseq = be32_to_cpu(lo->plh_stateid.stateid.seqid); - newseq = be32_to_cpu(new->stateid.seqid); + oldseq = be32_to_cpu(lo->plh_stateid.seqid); + newseq = be32_to_cpu(new->seqid); if ((int)(newseq - oldseq) > 0) { - memcpy(&lo->plh_stateid, &new->stateid, sizeof(new->stateid)); + nfs4_stateid_copy(&lo->plh_stateid, new); if (update_barrier) { - u32 new_barrier = be32_to_cpu(new->stateid.seqid); + u32 new_barrier = be32_to_cpu(new->seqid); if ((int)(new_barrier - lo->plh_barrier)) lo->plh_barrier = new_barrier; @@ -525,7 +525,7 @@ pnfs_layoutgets_blocked(struct pnfs_layout_hdr *lo, nfs4_stateid *stateid, int lget) { if ((stateid) && - (int)(lo->plh_barrier - be32_to_cpu(stateid->stateid.seqid)) >= 0) + (int)(lo->plh_barrier - be32_to_cpu(stateid->seqid)) >= 0) return true; return lo->plh_block_lgets || test_bit(NFS_LAYOUT_DESTROYED, &lo->plh_flags) || @@ -549,11 +549,10 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, do { seq = read_seqbegin(&open_state->seqlock); - memcpy(dst->data, open_state->stateid.data, - sizeof(open_state->stateid.data)); + nfs4_stateid_copy(dst, &open_state->stateid); } while (read_seqretry(&open_state->seqlock, seq)); } else - memcpy(dst->data, lo->plh_stateid.data, sizeof(lo->plh_stateid.data)); + nfs4_stateid_copy(dst, &lo->plh_stateid); spin_unlock(&lo->plh_inode->i_lock); dprintk("<-- %s\n", __func__); return status; @@ -590,7 +589,7 @@ send_layoutget(struct pnfs_layout_hdr *lo, max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; max_pages = max_resp_sz >> PAGE_SHIFT; - pages = kzalloc(max_pages * sizeof(struct page *), gfp_flags); + pages = kcalloc(max_pages, sizeof(struct page *), gfp_flags); if (!pages) goto out_err_free; @@ -760,7 +759,7 @@ bool pnfs_roc_drain(struct inode *ino, u32 *barrier) } if (!found) { struct pnfs_layout_hdr *lo = nfsi->layout; - u32 current_seqid = be32_to_cpu(lo->plh_stateid.stateid.seqid); + u32 current_seqid = be32_to_cpu(lo->plh_stateid.seqid); /* Since close does not return a layout stateid for use as * a barrier, we choose the worst-case barrier. @@ -966,8 +965,7 @@ pnfs_update_layout(struct inode *ino, } /* Do we even need to bother with this? */ - if (test_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state) || - test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { + if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { dprintk("%s matches recall, use MDS\n", __func__); goto out_unlock; } @@ -1032,7 +1030,6 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) struct nfs4_layoutget_res *res = &lgp->res; struct pnfs_layout_segment *lseg; struct inode *ino = lo->plh_inode; - struct nfs_client *clp = NFS_SERVER(ino)->nfs_client; int status = 0; /* Inject layout blob into I/O device driver */ @@ -1048,8 +1045,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) } spin_lock(&ino->i_lock); - if (test_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state) || - test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { + if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { dprintk("%s forget reply due to recall\n", __func__); goto out_forget_reply; } @@ -1214,6 +1210,7 @@ void pnfs_ld_write_done(struct nfs_write_data *data) } data->task.tk_status = pnfs_write_done_resend_to_mds(data->inode, &data->pages); } + put_lseg(data->lseg); data->mds_ops->rpc_release(data); } EXPORT_SYMBOL_GPL(pnfs_ld_write_done); @@ -1227,6 +1224,7 @@ pnfs_write_through_mds(struct nfs_pageio_descriptor *desc, nfs_list_add_request(data->req, &desc->pg_list); nfs_pageio_reset_write_mds(desc); desc->pg_recoalesce = 1; + put_lseg(data->lseg); nfs_writedata_release(data); } @@ -1327,6 +1325,7 @@ void pnfs_ld_read_done(struct nfs_read_data *data) data->mds_ops->rpc_call_done(&data->task, data); } else pnfs_ld_handle_read_error(data); + put_lseg(data->lseg); data->mds_ops->rpc_release(data); } EXPORT_SYMBOL_GPL(pnfs_ld_read_done); @@ -1530,8 +1529,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) end_pos = nfsi->layout->plh_lwb; nfsi->layout->plh_lwb = 0; - memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data, - sizeof(nfsi->layout->plh_stateid.data)); + nfs4_stateid_copy(&data->args.stateid, &nfsi->layout->plh_stateid); spin_unlock(&inode->i_lock); data->args.inode = inode; diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 53d593a0a4f..442ebf68eee 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -94,11 +94,10 @@ struct pnfs_layoutdriver_type { const struct nfs_pageio_ops *pg_read_ops; const struct nfs_pageio_ops *pg_write_ops; - /* Returns true if layoutdriver wants to divert this request to - * driver's commit routine. - */ - bool (*mark_pnfs_commit)(struct pnfs_layout_segment *lseg); - struct list_head * (*choose_commit_list) (struct nfs_page *req); + void (*mark_request_commit) (struct nfs_page *req, + struct pnfs_layout_segment *lseg); + void (*clear_request_commit) (struct nfs_page *req); + int (*scan_commit_lists) (struct inode *inode, int max, spinlock_t *lock); int (*commit_pagelist)(struct inode *inode, struct list_head *mds_pages, int how); /* @@ -229,7 +228,6 @@ struct nfs4_deviceid_node { atomic_t ref; }; -void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, @@ -262,20 +260,6 @@ static inline int pnfs_enabled_sb(struct nfs_server *nfss) return nfss->pnfs_curr_ld != NULL; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ - if (lseg) { - struct pnfs_layoutdriver_type *ld; - - ld = NFS_SERVER(req->wb_page->mapping->host)->pnfs_curr_ld; - if (ld->mark_pnfs_commit && ld->mark_pnfs_commit(lseg)) { - set_bit(PG_PNFS_COMMIT, &req->wb_flags); - req->wb_commit_lseg = get_lseg(lseg); - } - } -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { @@ -284,27 +268,42 @@ pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how); } -static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +static inline bool +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { - struct list_head *rv; + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) { - struct inode *inode = req->wb_commit_lseg->pls_layout->plh_inode; + if (lseg == NULL || ld->mark_request_commit == NULL) + return false; + ld->mark_request_commit(req, lseg); + return true; +} - set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags); - rv = NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list(req); - /* matched by ref taken when PG_PNFS_COMMIT is set */ - put_lseg(req->wb_commit_lseg); - } else - rv = mds; - return rv; +static inline bool +pnfs_clear_request_commit(struct nfs_page *req) +{ + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; + + if (ld == NULL || ld->clear_request_commit == NULL) + return false; + ld->clear_request_commit(req); + return true; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max, spinlock_t *lock) { - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) - put_lseg(req->wb_commit_lseg); + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; + int ret; + + if (ld == NULL || ld->scan_commit_lists == NULL) + return 0; + ret = ld->scan_commit_lists(inode, max, lock); + if (ret != 0) + set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags); + return ret; } /* Should the pNFS client commit and return the layout upon a setattr */ @@ -328,6 +327,13 @@ static inline int pnfs_return_layout(struct inode *ino) return 0; } +#ifdef NFS_DEBUG +void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); +#else +static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) +{ +} +#endif /* NFS_DEBUG */ #else /* CONFIG_NFS_V4_1 */ static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) @@ -400,35 +406,35 @@ static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, st return false; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { return PNFS_NOT_ATTEMPTED; } -static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +static inline bool +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { - return mds; + return false; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline bool +pnfs_clear_request_commit(struct nfs_page *req) { + return false; } -static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max, spinlock_t *lock) { return 0; } -static inline void nfs4_deviceid_purge_client(struct nfs_client *ncl) +static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) { + return 0; } + #endif /* CONFIG_NFS_V4_1 */ #endif /* FS_NFS_PNFS_H */ diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 4f359d2a26e..73f701f1f4d 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -43,6 +43,7 @@ static struct hlist_head nfs4_deviceid_cache[NFS4_DEVICE_ID_HASH_SIZE]; static DEFINE_SPINLOCK(nfs4_deviceid_lock); +#ifdef NFS_DEBUG void nfs4_print_deviceid(const struct nfs4_deviceid *id) { @@ -52,6 +53,7 @@ nfs4_print_deviceid(const struct nfs4_deviceid *id) p[0], p[1], p[2], p[3]); } EXPORT_SYMBOL_GPL(nfs4_print_deviceid); +#endif static inline u32 nfs4_deviceid_hash(const struct nfs4_deviceid *id) @@ -92,7 +94,7 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, * @clp nfs_client associated with deviceid * @id deviceid to look up */ -struct nfs4_deviceid_node * +static struct nfs4_deviceid_node * _find_get_deviceid(const struct pnfs_layoutdriver_type *ld, const struct nfs_client *clp, const struct nfs4_deviceid *id, long hash) diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 0c672588fe5..b63b6f4d14f 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -358,6 +358,11 @@ nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; } +static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) +{ + rpc_call_start(task); +} + static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) { if (nfs_async_handle_expired_key(task)) @@ -372,6 +377,11 @@ nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir) msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; } +static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) +{ + rpc_call_start(task); +} + static int nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, struct inode *new_dir) @@ -651,6 +661,11 @@ static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message * msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; } +static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) +{ + rpc_call_start(task); +} + static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) { if (nfs_async_handle_expired_key(task)) @@ -668,6 +683,11 @@ static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; } +static void nfs_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) +{ + rpc_call_start(task); +} + static void nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) { @@ -721,9 +741,11 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .create = nfs_proc_create, .remove = nfs_proc_remove, .unlink_setup = nfs_proc_unlink_setup, + .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, .unlink_done = nfs_proc_unlink_done, .rename = nfs_proc_rename, .rename_setup = nfs_proc_rename_setup, + .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, .rename_done = nfs_proc_rename_done, .link = nfs_proc_link, .symlink = nfs_proc_symlink, @@ -736,8 +758,10 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .pathconf = nfs_proc_pathconf, .decode_dirent = nfs2_decode_dirent, .read_setup = nfs_proc_read_setup, + .read_rpc_prepare = nfs_proc_read_rpc_prepare, .read_done = nfs_read_done, .write_setup = nfs_proc_write_setup, + .write_rpc_prepare = nfs_proc_write_rpc_prepare, .write_done = nfs_write_done, .commit_setup = nfs_proc_commit_setup, .lock = nfs_proc_lock, diff --git a/fs/nfs/read.c b/fs/nfs/read.c index cfa175c223d..cc1f758a7ee 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -66,7 +66,6 @@ void nfs_readdata_free(struct nfs_read_data *p) void nfs_readdata_release(struct nfs_read_data *rdata) { - put_lseg(rdata->lseg); put_nfs_open_context(rdata->args.context); nfs_readdata_free(rdata); } @@ -465,23 +464,14 @@ static void nfs_readpage_release_partial(void *calldata) nfs_readdata_release(calldata); } -#if defined(CONFIG_NFS_V4_1) void nfs_read_prepare(struct rpc_task *task, void *calldata) { struct nfs_read_data *data = calldata; - - if (nfs4_setup_sequence(NFS_SERVER(data->inode), - &data->args.seq_args, &data->res.seq_res, - 0, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->inode)->read_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_read_partial_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_readpage_result_partial, .rpc_release = nfs_readpage_release_partial, }; @@ -545,9 +535,7 @@ static void nfs_readpage_release_full(void *calldata) } static const struct rpc_call_ops nfs_read_full_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_read_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_readpage_result_full, .rpc_release = nfs_readpage_release_full, }; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 3dfa4f112c0..ccc4cdb1efe 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -52,6 +52,8 @@ #include <linux/nfs_xdr.h> #include <linux/magic.h> #include <linux/parser.h> +#include <linux/nsproxy.h> +#include <linux/rcupdate.h> #include <asm/system.h> #include <asm/uaccess.h> @@ -79,7 +81,6 @@ enum { Opt_cto, Opt_nocto, Opt_ac, Opt_noac, Opt_lock, Opt_nolock, - Opt_v2, Opt_v3, Opt_v4, Opt_udp, Opt_tcp, Opt_rdma, Opt_acl, Opt_noacl, Opt_rdirplus, Opt_nordirplus, @@ -97,10 +98,10 @@ enum { Opt_namelen, Opt_mountport, Opt_mountvers, - Opt_nfsvers, Opt_minorversion, /* Mount options that take string arguments */ + Opt_nfsvers, Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost, Opt_addr, Opt_mountaddr, Opt_clientaddr, Opt_lookupcache, @@ -132,9 +133,6 @@ static const match_table_t nfs_mount_option_tokens = { { Opt_noac, "noac" }, { Opt_lock, "lock" }, { Opt_nolock, "nolock" }, - { Opt_v2, "v2" }, - { Opt_v3, "v3" }, - { Opt_v4, "v4" }, { Opt_udp, "udp" }, { Opt_tcp, "tcp" }, { Opt_rdma, "rdma" }, @@ -163,9 +161,10 @@ static const match_table_t nfs_mount_option_tokens = { { Opt_namelen, "namlen=%s" }, { Opt_mountport, "mountport=%s" }, { Opt_mountvers, "mountvers=%s" }, + { Opt_minorversion, "minorversion=%s" }, + { Opt_nfsvers, "nfsvers=%s" }, { Opt_nfsvers, "vers=%s" }, - { Opt_minorversion, "minorversion=%s" }, { Opt_sec, "sec=%s" }, { Opt_proto, "proto=%s" }, @@ -179,6 +178,9 @@ static const match_table_t nfs_mount_option_tokens = { { Opt_fscache_uniq, "fsc=%s" }, { Opt_local_lock, "local_lock=%s" }, + /* The following needs to be listed after all other options */ + { Opt_nfsvers, "v%s" }, + { Opt_err, NULL } }; @@ -259,6 +261,22 @@ static match_table_t nfs_local_lock_tokens = { { Opt_local_lock_err, NULL } }; +enum { + Opt_vers_2, Opt_vers_3, Opt_vers_4, Opt_vers_4_0, + Opt_vers_4_1, + + Opt_vers_err +}; + +static match_table_t nfs_vers_tokens = { + { Opt_vers_2, "2" }, + { Opt_vers_3, "3" }, + { Opt_vers_4, "4" }, + { Opt_vers_4_0, "4.0" }, + { Opt_vers_4_1, "4.1" }, + + { Opt_vers_err, NULL } +}; static void nfs_umount_begin(struct super_block *); static int nfs_statfs(struct dentry *, struct kstatfs *); @@ -620,7 +638,6 @@ static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss, struct nfs_client *clp = nfss->nfs_client; seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr); - seq_printf(m, ",minorversion=%u", clp->cl_minorversion); } #else static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss, @@ -629,6 +646,15 @@ static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss, } #endif +static void nfs_show_nfs_version(struct seq_file *m, + unsigned int version, + unsigned int minorversion) +{ + seq_printf(m, ",vers=%u", version); + if (version == 4) + seq_printf(m, ".%u", minorversion); +} + /* * Describe the mount options in force on this server representation */ @@ -656,7 +682,7 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, u32 version = clp->rpc_ops->version; int local_flock, local_fcntl; - seq_printf(m, ",vers=%u", version); + nfs_show_nfs_version(m, version, clp->cl_minorversion); seq_printf(m, ",rsize=%u", nfss->rsize); seq_printf(m, ",wsize=%u", nfss->wsize); if (nfss->bsize != 0) @@ -676,8 +702,10 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, else seq_puts(m, nfs_infop->nostr); } + rcu_read_lock(); seq_printf(m, ",proto=%s", rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID)); + rcu_read_unlock(); if (version == 4) { if (nfss->port != NFS_PORT) seq_printf(m, ",port=%u", nfss->port); @@ -726,9 +754,11 @@ static int nfs_show_options(struct seq_file *m, struct dentry *root) nfs_show_mount_options(m, nfss, 0); + rcu_read_lock(); seq_printf(m, ",addr=%s", rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient, RPC_DISPLAY_ADDR)); + rcu_read_unlock(); return 0; } @@ -745,7 +775,6 @@ static void show_sessions(struct seq_file *m, struct nfs_server *server) {} #endif #endif -#ifdef CONFIG_NFS_V4 #ifdef CONFIG_NFS_V4_1 static void show_pnfs(struct seq_file *m, struct nfs_server *server) { @@ -755,9 +784,26 @@ static void show_pnfs(struct seq_file *m, struct nfs_server *server) else seq_printf(m, "not configured"); } + +static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss) +{ + if (nfss->nfs_client && nfss->nfs_client->impl_id) { + struct nfs41_impl_id *impl_id = nfss->nfs_client->impl_id; + seq_printf(m, "\n\timpl_id:\tname='%s',domain='%s'," + "date='%llu,%u'", + impl_id->name, impl_id->domain, + impl_id->date.seconds, impl_id->date.nseconds); + } +} #else -static void show_pnfs(struct seq_file *m, struct nfs_server *server) {} +#ifdef CONFIG_NFS_V4 +static void show_pnfs(struct seq_file *m, struct nfs_server *server) +{ +} #endif +static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss) +{ +} #endif static int nfs_show_devname(struct seq_file *m, struct dentry *root) @@ -806,6 +852,8 @@ static int nfs_show_stats(struct seq_file *m, struct dentry *root) seq_printf(m, "\n\tage:\t%lu", (jiffies - nfss->mount_time) / HZ); + show_implementation_id(m, nfss); + seq_printf(m, "\n\tcaps:\t"); seq_printf(m, "caps=0x%x", nfss->caps); seq_printf(m, ",wtmult=%u", nfss->wtmult); @@ -908,6 +956,7 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(unsigned int ve data->auth_flavor_len = 1; data->version = version; data->minorversion = 0; + data->net = current->nsproxy->net_ns; security_init_mnt_opts(&data->lsm_opts); } return data; @@ -1052,6 +1101,40 @@ static int nfs_parse_security_flavors(char *value, return 1; } +static int nfs_parse_version_string(char *string, + struct nfs_parsed_mount_data *mnt, + substring_t *args) +{ + mnt->flags &= ~NFS_MOUNT_VER3; + switch (match_token(string, nfs_vers_tokens, args)) { + case Opt_vers_2: + mnt->version = 2; + break; + case Opt_vers_3: + mnt->flags |= NFS_MOUNT_VER3; + mnt->version = 3; + break; + case Opt_vers_4: + /* Backward compatibility option. In future, + * the mount program should always supply + * a NFSv4 minor version number. + */ + mnt->version = 4; + break; + case Opt_vers_4_0: + mnt->version = 4; + mnt->minorversion = 0; + break; + case Opt_vers_4_1: + mnt->version = 4; + mnt->minorversion = 1; + break; + default: + return 0; + } + return 1; +} + static int nfs_get_option_str(substring_t args[], char **option) { kfree(*option); @@ -1157,18 +1240,6 @@ static int nfs_parse_mount_options(char *raw, mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK | NFS_MOUNT_LOCAL_FCNTL); break; - case Opt_v2: - mnt->flags &= ~NFS_MOUNT_VER3; - mnt->version = 2; - break; - case Opt_v3: - mnt->flags |= NFS_MOUNT_VER3; - mnt->version = 3; - break; - case Opt_v4: - mnt->flags &= ~NFS_MOUNT_VER3; - mnt->version = 4; - break; case Opt_udp: mnt->flags &= ~NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP; @@ -1295,26 +1366,6 @@ static int nfs_parse_mount_options(char *raw, goto out_invalid_value; mnt->mount_server.version = option; break; - case Opt_nfsvers: - if (nfs_get_option_ul(args, &option)) - goto out_invalid_value; - switch (option) { - case NFS2_VERSION: - mnt->flags &= ~NFS_MOUNT_VER3; - mnt->version = 2; - break; - case NFS3_VERSION: - mnt->flags |= NFS_MOUNT_VER3; - mnt->version = 3; - break; - case NFS4_VERSION: - mnt->flags &= ~NFS_MOUNT_VER3; - mnt->version = 4; - break; - default: - goto out_invalid_value; - } - break; case Opt_minorversion: if (nfs_get_option_ul(args, &option)) goto out_invalid_value; @@ -1326,6 +1377,15 @@ static int nfs_parse_mount_options(char *raw, /* * options that take text values */ + case Opt_nfsvers: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + rc = nfs_parse_version_string(string, mnt, args); + kfree(string); + if (!rc) + goto out_invalid_value; + break; case Opt_sec: string = match_strdup(args); if (string == NULL) @@ -1405,7 +1465,7 @@ static int nfs_parse_mount_options(char *raw, if (string == NULL) goto out_nomem; mnt->nfs_server.addrlen = - rpc_pton(string, strlen(string), + rpc_pton(mnt->net, string, strlen(string), (struct sockaddr *) &mnt->nfs_server.address, sizeof(mnt->nfs_server.address)); @@ -1427,7 +1487,7 @@ static int nfs_parse_mount_options(char *raw, if (string == NULL) goto out_nomem; mnt->mount_server.addrlen = - rpc_pton(string, strlen(string), + rpc_pton(mnt->net, string, strlen(string), (struct sockaddr *) &mnt->mount_server.address, sizeof(mnt->mount_server.address)); @@ -1516,6 +1576,9 @@ static int nfs_parse_mount_options(char *raw, if (!sloppy && invalid_option) return 0; + if (mnt->minorversion && mnt->version != 4) + goto out_minorversion_mismatch; + /* * verify that any proto=/mountproto= options match the address * familiies in the addr=/mountaddr= options. @@ -1549,6 +1612,10 @@ out_invalid_address: out_invalid_value: printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p); return 0; +out_minorversion_mismatch: + printk(KERN_INFO "NFS: mount option vers=%u does not support " + "minorversion=%u\n", mnt->version, mnt->minorversion); + return 0; out_nomem: printk(KERN_INFO "NFS: not enough memory to parse option\n"); return 0; @@ -1622,6 +1689,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args, .noresvport = args->flags & NFS_MOUNT_NORESVPORT, .auth_flav_len = &server_authlist_len, .auth_flavs = server_authlist, + .net = args->net, }; int status; @@ -2047,7 +2115,7 @@ static inline void nfs_initialise_sb(struct super_block *sb) /* We probably want something more informative here */ snprintf(sb->s_id, sizeof(sb->s_id), - "%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev)); + "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev)); if (sb->s_blocksize == 0) sb->s_blocksize = nfs_block_bits(server->wsize, @@ -2499,12 +2567,6 @@ static int nfs4_validate_text_mount_data(void *options, return -EINVAL; } - if (args->client_address == NULL) { - dfprintk(MOUNT, - "NFS4: mount program didn't pass callback address\n"); - return -EINVAL; - } - return nfs_parse_devname(dev_name, &args->nfs_server.hostname, NFS4_MAXNAMLEN, @@ -2663,8 +2725,7 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags, if (!s->s_root) { /* initial superblock/root creation */ nfs4_fill_super(s); - nfs_fscache_get_super_cookie( - s, data ? data->fscache_uniq : NULL, NULL); + nfs_fscache_get_super_cookie(s, data->fscache_uniq, NULL); } mntroot = nfs4_get_root(s, mntfh, dev_name); diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c index 978aaeb8a09..ad4d2e787b2 100644 --- a/fs/nfs/sysctl.c +++ b/fs/nfs/sysctl.c @@ -32,7 +32,6 @@ static ctl_table nfs_cb_sysctls[] = { .extra1 = (int *)&nfs_set_port_min, .extra2 = (int *)&nfs_set_port_max, }, -#ifndef CONFIG_NFS_USE_NEW_IDMAPPER { .procname = "idmap_cache_timeout", .data = &nfs_idmap_cache_timeout, @@ -40,7 +39,6 @@ static ctl_table nfs_cb_sysctls[] = { .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, -#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */ #endif { .procname = "nfs_mountpoint_timeout", diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 4f9319a2e56..3210a03342f 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -20,15 +20,6 @@ #include "iostat.h" #include "delegation.h" -struct nfs_unlinkdata { - struct hlist_node list; - struct nfs_removeargs args; - struct nfs_removeres res; - struct inode *dir; - struct rpc_cred *cred; - struct nfs_fattr dir_attr; -}; - /** * nfs_free_unlinkdata - release data from a sillydelete operation. * @data: pointer to unlink structure. @@ -107,25 +98,16 @@ static void nfs_async_unlink_release(void *calldata) nfs_sb_deactive(sb); } -#if defined(CONFIG_NFS_V4_1) -void nfs_unlink_prepare(struct rpc_task *task, void *calldata) +static void nfs_unlink_prepare(struct rpc_task *task, void *calldata) { struct nfs_unlinkdata *data = calldata; - struct nfs_server *server = NFS_SERVER(data->dir); - - if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->dir)->unlink_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_unlink_ops = { .rpc_call_done = nfs_async_unlink_done, .rpc_release = nfs_async_unlink_release, -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_unlink_prepare, -#endif /* CONFIG_NFS_V4_1 */ }; static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct nfs_unlinkdata *data) @@ -341,18 +323,6 @@ nfs_cancel_async_unlink(struct dentry *dentry) spin_unlock(&dentry->d_lock); } -struct nfs_renamedata { - struct nfs_renameargs args; - struct nfs_renameres res; - struct rpc_cred *cred; - struct inode *old_dir; - struct dentry *old_dentry; - struct nfs_fattr old_fattr; - struct inode *new_dir; - struct dentry *new_dentry; - struct nfs_fattr new_fattr; -}; - /** * nfs_async_rename_done - Sillyrename post-processing * @task: rpc_task of the sillyrename @@ -403,25 +373,16 @@ static void nfs_async_rename_release(void *calldata) kfree(data); } -#if defined(CONFIG_NFS_V4_1) static void nfs_rename_prepare(struct rpc_task *task, void *calldata) { struct nfs_renamedata *data = calldata; - struct nfs_server *server = NFS_SERVER(data->old_dir); - - if (nfs4_setup_sequence(server, &data->args.seq_args, - &data->res.seq_res, 1, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->old_dir)->rename_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_rename_ops = { .rpc_call_done = nfs_async_rename_done, .rpc_release = nfs_async_rename_release, -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_rename_prepare, -#endif /* CONFIG_NFS_V4_1 */ }; /** diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 834f0fe96f8..2c68818f68a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -100,7 +100,6 @@ void nfs_writedata_free(struct nfs_write_data *p) void nfs_writedata_release(struct nfs_write_data *wdata) { - put_lseg(wdata->lseg); put_nfs_open_context(wdata->args.context); nfs_writedata_free(wdata); } @@ -236,10 +235,10 @@ static struct nfs_page *nfs_find_and_lock_request(struct page *page, bool nonblo req = nfs_page_find_request_locked(page); if (req == NULL) break; - if (nfs_set_page_tag_locked(req)) + if (nfs_lock_request_dontget(req)) break; /* Note: If we hold the page lock, as is the case in nfs_writepage, - * then the call to nfs_set_page_tag_locked() will always + * then the call to nfs_lock_request_dontget() will always * succeed provided that someone hasn't already marked the * request as dirty (in which case we don't care). */ @@ -375,21 +374,14 @@ out_err: /* * Insert a write request into an inode */ -static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) +static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) { struct nfs_inode *nfsi = NFS_I(inode); - int error; - - error = radix_tree_preload(GFP_NOFS); - if (error != 0) - goto out; /* Lock the request! */ nfs_lock_request_dontget(req); spin_lock(&inode->i_lock); - error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req); - BUG_ON(error); if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE)) inode->i_version++; set_bit(PG_MAPPED, &req->wb_flags); @@ -397,12 +389,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) set_page_private(req->wb_page, (unsigned long)req); nfsi->npages++; kref_get(&req->wb_kref); - radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, - NFS_PAGE_TAG_LOCKED); spin_unlock(&inode->i_lock); - radix_tree_preload_end(); -out: - return error; } /* @@ -419,7 +406,6 @@ static void nfs_inode_remove_request(struct nfs_page *req) set_page_private(req->wb_page, 0); ClearPagePrivate(req->wb_page); clear_bit(PG_MAPPED, &req->wb_flags); - radix_tree_delete(&nfsi->nfs_page_tree, req->wb_index); nfsi->npages--; spin_unlock(&inode->i_lock); nfs_release_request(req); @@ -432,39 +418,90 @@ nfs_mark_request_dirty(struct nfs_page *req) } #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) -/* - * Add a request to the inode's commit list. +/** + * nfs_request_add_commit_list - add request to a commit list + * @req: pointer to a struct nfs_page + * @head: commit list head + * + * This sets the PG_CLEAN bit, updates the inode global count of + * number of outstanding requests requiring a commit as well as + * the MM page stats. + * + * The caller must _not_ hold the inode->i_lock, but must be + * holding the nfs_page lock. */ -static void -nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) +void +nfs_request_add_commit_list(struct nfs_page *req, struct list_head *head) { struct inode *inode = req->wb_context->dentry->d_inode; - struct nfs_inode *nfsi = NFS_I(inode); - spin_lock(&inode->i_lock); set_bit(PG_CLEAN, &(req)->wb_flags); - radix_tree_tag_set(&nfsi->nfs_page_tree, - req->wb_index, - NFS_PAGE_TAG_COMMIT); - nfsi->ncommit++; + spin_lock(&inode->i_lock); + nfs_list_add_request(req, head); + NFS_I(inode)->ncommit++; spin_unlock(&inode->i_lock); - pnfs_mark_request_commit(req, lseg); inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE); __mark_inode_dirty(inode, I_DIRTY_DATASYNC); } +EXPORT_SYMBOL_GPL(nfs_request_add_commit_list); -static int +/** + * nfs_request_remove_commit_list - Remove request from a commit list + * @req: pointer to a nfs_page + * + * This clears the PG_CLEAN bit, and updates the inode global count of + * number of outstanding requests requiring a commit + * It does not update the MM page stats. + * + * The caller _must_ hold the inode->i_lock and the nfs_page lock. + */ +void +nfs_request_remove_commit_list(struct nfs_page *req) +{ + struct inode *inode = req->wb_context->dentry->d_inode; + + if (!test_and_clear_bit(PG_CLEAN, &(req)->wb_flags)) + return; + nfs_list_remove_request(req); + NFS_I(inode)->ncommit--; +} +EXPORT_SYMBOL_GPL(nfs_request_remove_commit_list); + + +/* + * Add a request to the inode's commit list. + */ +static void +nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) +{ + struct inode *inode = req->wb_context->dentry->d_inode; + + if (pnfs_mark_request_commit(req, lseg)) + return; + nfs_request_add_commit_list(req, &NFS_I(inode)->commit_list); +} + +static void +nfs_clear_page_commit(struct page *page) +{ + dec_zone_page_state(page, NR_UNSTABLE_NFS); + dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); +} + +static void nfs_clear_request_commit(struct nfs_page *req) { - struct page *page = req->wb_page; + if (test_bit(PG_CLEAN, &req->wb_flags)) { + struct inode *inode = req->wb_context->dentry->d_inode; - if (test_and_clear_bit(PG_CLEAN, &(req)->wb_flags)) { - dec_zone_page_state(page, NR_UNSTABLE_NFS); - dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); - return 1; + if (!pnfs_clear_request_commit(req)) { + spin_lock(&inode->i_lock); + nfs_request_remove_commit_list(req); + spin_unlock(&inode->i_lock); + } + nfs_clear_page_commit(req->wb_page); } - return 0; } static inline @@ -491,15 +528,14 @@ int nfs_reschedule_unstable_write(struct nfs_page *req, return 0; } #else -static inline void +static void nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { } -static inline int +static void nfs_clear_request_commit(struct nfs_page *req) { - return 0; } static inline @@ -520,46 +556,65 @@ int nfs_reschedule_unstable_write(struct nfs_page *req, static int nfs_need_commit(struct nfs_inode *nfsi) { - return radix_tree_tagged(&nfsi->nfs_page_tree, NFS_PAGE_TAG_COMMIT); + return nfsi->ncommit > 0; +} + +/* i_lock held by caller */ +static int +nfs_scan_commit_list(struct list_head *src, struct list_head *dst, int max, + spinlock_t *lock) +{ + struct nfs_page *req, *tmp; + int ret = 0; + + list_for_each_entry_safe(req, tmp, src, wb_list) { + if (!nfs_lock_request(req)) + continue; + if (cond_resched_lock(lock)) + list_safe_reset_next(req, tmp, wb_list); + nfs_request_remove_commit_list(req); + nfs_list_add_request(req, dst); + ret++; + if (ret == max) + break; + } + return ret; } /* * nfs_scan_commit - Scan an inode for commit requests * @inode: NFS inode to scan * @dst: destination list - * @idx_start: lower bound of page->index to scan. - * @npages: idx_start + npages sets the upper bound to scan. * * Moves requests from the inode's 'commit' request list. * The requests are *not* checked to ensure that they form a contiguous set. */ static int -nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages) +nfs_scan_commit(struct inode *inode, struct list_head *dst) { struct nfs_inode *nfsi = NFS_I(inode); - int ret; - - if (!nfs_need_commit(nfsi)) - return 0; + int ret = 0; spin_lock(&inode->i_lock); - ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT); - if (ret > 0) - nfsi->ncommit -= ret; - spin_unlock(&inode->i_lock); - - if (nfs_need_commit(NFS_I(inode))) - __mark_inode_dirty(inode, I_DIRTY_DATASYNC); + if (nfsi->ncommit > 0) { + const int max = INT_MAX; + ret = nfs_scan_commit_list(&nfsi->commit_list, dst, max, + &inode->i_lock); + ret += pnfs_scan_commit_lists(inode, max - ret, + &inode->i_lock); + } + spin_unlock(&inode->i_lock); return ret; } + #else static inline int nfs_need_commit(struct nfs_inode *nfsi) { return 0; } -static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages) +static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst) { return 0; } @@ -604,7 +659,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, || end < req->wb_offset) goto out_flushme; - if (nfs_set_page_tag_locked(req)) + if (nfs_lock_request_dontget(req)) break; /* The request is locked, so wait and then retry */ @@ -616,13 +671,6 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, spin_lock(&inode->i_lock); } - if (nfs_clear_request_commit(req) && - radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree, - req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL) { - NFS_I(inode)->ncommit--; - pnfs_clear_request_commit(req); - } - /* Okay, the request matches. Update the region */ if (offset < req->wb_offset) { req->wb_offset = offset; @@ -634,6 +682,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, req->wb_bytes = rqend - req->wb_offset; out_unlock: spin_unlock(&inode->i_lock); + nfs_clear_request_commit(req); return req; out_flushme: spin_unlock(&inode->i_lock); @@ -655,7 +704,6 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, { struct inode *inode = page->mapping->host; struct nfs_page *req; - int error; req = nfs_try_to_update_request(inode, page, offset, bytes); if (req != NULL) @@ -663,11 +711,7 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, req = nfs_create_request(ctx, inode, page, offset, bytes); if (IS_ERR(req)) goto out; - error = nfs_inode_add_request(inode, req); - if (error != 0) { - nfs_release_request(req); - req = ERR_PTR(error); - } + nfs_inode_add_request(inode, req); out: return req; } @@ -684,7 +728,7 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page, nfs_grow_file(page, offset, count); nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes); nfs_mark_request_dirty(req); - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); return 0; } @@ -777,7 +821,7 @@ static void nfs_writepage_release(struct nfs_page *req, if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req, data)) nfs_inode_remove_request(req); - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); nfs_end_page_writeback(page); } @@ -925,7 +969,7 @@ static void nfs_redirty_request(struct nfs_page *req) struct page *page = req->wb_page; nfs_mark_request_dirty(req); - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); nfs_end_page_writeback(page); } @@ -1128,23 +1172,14 @@ out: nfs_writedata_release(calldata); } -#if defined(CONFIG_NFS_V4_1) void nfs_write_prepare(struct rpc_task *task, void *calldata) { struct nfs_write_data *data = calldata; - - if (nfs4_setup_sequence(NFS_SERVER(data->inode), - &data->args.seq_args, - &data->res.seq_res, 1, task)) - return; - rpc_call_start(task); + NFS_PROTO(data->inode)->write_rpc_prepare(task, data); } -#endif /* CONFIG_NFS_V4_1 */ static const struct rpc_call_ops nfs_write_partial_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_writeback_done_partial, .rpc_release = nfs_writeback_release_partial, }; @@ -1199,16 +1234,14 @@ static void nfs_writeback_release_full(void *calldata) remove_request: nfs_inode_remove_request(req); next: - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); nfs_end_page_writeback(page); } nfs_writedata_release(calldata); } static const struct rpc_call_ops nfs_write_full_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_writeback_done_full, .rpc_release = nfs_writeback_release_full, }; @@ -1325,7 +1358,6 @@ void nfs_commitdata_release(void *data) { struct nfs_write_data *wdata = data; - put_lseg(wdata->lseg); put_nfs_open_context(wdata->args.context); nfs_commit_free(wdata); } @@ -1411,7 +1443,7 @@ void nfs_retry_commit(struct list_head *page_list, dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); dec_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE); - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); } } EXPORT_SYMBOL_GPL(nfs_retry_commit); @@ -1460,7 +1492,7 @@ void nfs_commit_release_pages(struct nfs_write_data *data) while (!list_empty(&data->pages)) { req = nfs_list_entry(data->pages.next); nfs_list_remove_request(req); - nfs_clear_request_commit(req); + nfs_clear_page_commit(req->wb_page); dprintk("NFS: commit (%s/%lld %d@%lld)", req->wb_context->dentry->d_sb->s_id, @@ -1486,7 +1518,7 @@ void nfs_commit_release_pages(struct nfs_write_data *data) dprintk(" mismatch\n"); nfs_mark_request_dirty(req); next: - nfs_clear_page_tag_locked(req); + nfs_unlock_request(req); } } EXPORT_SYMBOL_GPL(nfs_commit_release_pages); @@ -1501,9 +1533,7 @@ static void nfs_commit_release(void *calldata) } static const struct rpc_call_ops nfs_commit_ops = { -#if defined(CONFIG_NFS_V4_1) .rpc_call_prepare = nfs_write_prepare, -#endif /* CONFIG_NFS_V4_1 */ .rpc_call_done = nfs_commit_done, .rpc_release = nfs_commit_release, }; @@ -1517,7 +1547,7 @@ int nfs_commit_inode(struct inode *inode, int how) res = nfs_commit_set_lock(NFS_I(inode), may_wait); if (res <= 0) goto out_mark_dirty; - res = nfs_scan_commit(inode, &head, 0, 0); + res = nfs_scan_commit(inode, &head); if (res) { int error; @@ -1635,6 +1665,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page) if (req == NULL) break; if (nfs_lock_request_dontget(req)) { + nfs_clear_request_commit(req); nfs_inode_remove_request(req); /* * In case nfs_inode_remove_request has marked the diff --git a/fs/nfsd/fault_inject.c b/fs/nfsd/fault_inject.c index ce7f0758d84..9559ce46873 100644 --- a/fs/nfsd/fault_inject.c +++ b/fs/nfsd/fault_inject.c @@ -72,7 +72,7 @@ int nfsd_fault_inject_init(void) { unsigned int i; struct nfsd_fault_inject_op *op; - mode_t mode = S_IFREG | S_IRUSR | S_IWUSR; + umode_t mode = S_IFREG | S_IRUSR | S_IWUSR; debug_dir = debugfs_create_dir("nfsd", NULL); if (!debug_dir) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 6f3ebb48b12..0e262f32ac4 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -605,24 +605,24 @@ static struct rpc_version nfs_cb_version4 = { .procs = nfs4_cb_procedures }; -static struct rpc_version *nfs_cb_version[] = { +static const struct rpc_version *nfs_cb_version[] = { &nfs_cb_version4, }; -static struct rpc_program cb_program; +static const struct rpc_program cb_program; static struct rpc_stat cb_stats = { .program = &cb_program }; #define NFS4_CALLBACK 0x40000000 -static struct rpc_program cb_program = { +static const struct rpc_program cb_program = { .name = "nfs4_cb", .number = NFS4_CALLBACK, .nrvers = ARRAY_SIZE(nfs_cb_version), .version = nfs_cb_version, .stats = &cb_stats, - .pipe_dir_name = "/nfsd4_cb", + .pipe_dir_name = "nfsd4_cb", }; static int max_cb_time(void) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index e8c98f00967..c5cddd65942 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1308,7 +1308,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_r else goto out_err; - conn->cb_addrlen = rpc_uaddr2sockaddr(se->se_callback_addr_val, + conn->cb_addrlen = rpc_uaddr2sockaddr(&init_net, se->se_callback_addr_val, se->se_callback_addr_len, (struct sockaddr *)&conn->cb_addr, sizeof(conn->cb_addr)); diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 748eda93ce5..64c24af8d7e 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -223,7 +223,7 @@ static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) if (qword_get(&buf, fo_path, size) < 0) return -EINVAL; - if (rpc_pton(fo_path, size, sap, salen) == 0) + if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0) return -EINVAL; return nlmsvc_unlock_all_by_ip(sap); @@ -722,7 +722,7 @@ static ssize_t __write_ports_addxprt(char *buf) nfsd_serv->sv_nrthreads--; return 0; out_close: - xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port); + xprt = svc_find_xprt(nfsd_serv, transport, &init_net, PF_INET, port); if (xprt != NULL) { svc_close_xprt(xprt); svc_xprt_put(xprt); @@ -748,7 +748,7 @@ static ssize_t __write_ports_delxprt(char *buf) if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL) return -EINVAL; - xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port); + xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port); if (xprt == NULL) return -ENOTCONN; diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index eda7d7e55e0..fce472f5f39 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -251,13 +251,13 @@ static void nfsd_shutdown(void) nfsd_up = false; } -static void nfsd_last_thread(struct svc_serv *serv) +static void nfsd_last_thread(struct svc_serv *serv, struct net *net) { /* When last nfsd thread exits we need to do some clean-up */ nfsd_serv = NULL; nfsd_shutdown(); - svc_rpcb_cleanup(serv); + svc_rpcb_cleanup(serv, net); printk(KERN_WARNING "nfsd: last server has exited, flushing export " "cache\n"); diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c index a2e2402b2af..6d4521feb6e 100644 --- a/fs/nfsd/stats.c +++ b/fs/nfsd/stats.c @@ -25,6 +25,7 @@ #include <linux/module.h> #include <linux/sunrpc/stats.h> #include <linux/nfsd/stats.h> +#include <net/net_namespace.h> #include "nfsd.h" @@ -94,11 +95,11 @@ static const struct file_operations nfsd_proc_fops = { void nfsd_stat_init(void) { - svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops); + svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_fops); } void nfsd_stat_shutdown(void) { - svc_proc_unregister("nfsd"); + svc_proc_unregister(&init_net, "nfsd"); } diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index edf6d3ed877..e59f71d0cf7 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1541,30 +1541,31 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, __be32 nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) { - struct dentry *dentry; struct inode *inode; mm_segment_t oldfs; __be32 err; int host_err; + struct path path; err = fh_verify(rqstp, fhp, S_IFLNK, NFSD_MAY_NOP); if (err) goto out; - dentry = fhp->fh_dentry; - inode = dentry->d_inode; + path.mnt = fhp->fh_export->ex_path.mnt; + path.dentry = fhp->fh_dentry; + inode = path.dentry->d_inode; err = nfserr_inval; if (!inode->i_op->readlink) goto out; - touch_atime(fhp->fh_export->ex_path.mnt, dentry); + touch_atime(&path); /* N.B. Why does this call need a get_fs()?? * Remove the set_fs and watch the fireworks:-) --okir */ oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = inode->i_op->readlink(dentry, buf, *lenp); + host_err = inode->i_op->readlink(path.dentry, buf, *lenp); set_fs(oldfs); if (host_err < 0) diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c index c9b342c8b50..dab5c4c6dfa 100644 --- a/fs/nilfs2/cpfile.c +++ b/fs/nilfs2/cpfile.c @@ -218,11 +218,11 @@ int nilfs_cpfile_get_checkpoint(struct inode *cpfile, kaddr, 1); mark_buffer_dirty(cp_bh); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); le64_add_cpu(&header->ch_ncheckpoints, 1); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(header_bh); nilfs_mdt_mark_dirty(cpfile); } @@ -313,7 +313,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile, continue; } - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); + kaddr = kmap_atomic(cp_bh->b_page); cp = nilfs_cpfile_block_get_checkpoint( cpfile, cno, cp_bh, kaddr); nicps = 0; @@ -334,7 +334,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile, cpfile, cp_bh, kaddr, nicps); if (count == 0) { /* make hole */ - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(cp_bh); ret = nilfs_cpfile_delete_checkpoint_block( @@ -349,18 +349,18 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile, } } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(cp_bh); } if (tnicps > 0) { - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps); mark_buffer_dirty(header_bh); nilfs_mdt_mark_dirty(cpfile); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } brelse(header_bh); @@ -408,7 +408,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop, continue; /* skip hole */ } - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr); for (i = 0; i < ncps && n < nci; i++, cp = (void *)cp + cpsz) { if (!nilfs_checkpoint_invalid(cp)) { @@ -418,7 +418,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop, n++; } } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); } @@ -451,10 +451,10 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop, ret = nilfs_cpfile_get_header_block(cpfile, &bh); if (ret < 0) goto out; - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr); curr = le64_to_cpu(header->ch_snapshot_list.ssl_next); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); if (curr == 0) { ret = 0; @@ -472,7 +472,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop, ret = 0; /* No snapshots (started from a hole block) */ goto out; } - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); while (n < nci) { cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr); curr = ~(__u64)0; /* Terminator */ @@ -488,7 +488,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop, next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next); if (curr_blkoff != next_blkoff) { - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); ret = nilfs_cpfile_get_checkpoint_block(cpfile, next, 0, &bh); @@ -496,12 +496,12 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop, WARN_ON(ret == -ENOENT); goto out; } - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); } curr = next; curr_blkoff = next_blkoff; } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); *cnop = curr; ret = n; @@ -592,24 +592,24 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno) ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh); if (ret < 0) goto out_sem; - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); + kaddr = kmap_atomic(cp_bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); if (nilfs_checkpoint_invalid(cp)) { ret = -ENOENT; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); goto out_cp; } if (nilfs_checkpoint_snapshot(cp)) { ret = 0; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); goto out_cp; } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); ret = nilfs_cpfile_get_header_block(cpfile, &header_bh); if (ret < 0) goto out_cp; - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); list = &header->ch_snapshot_list; curr_bh = header_bh; @@ -621,13 +621,13 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno) prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev); curr = prev; if (curr_blkoff != prev_blkoff) { - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(curr_bh); ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr, 0, &curr_bh); if (ret < 0) goto out_header; - kaddr = kmap_atomic(curr_bh->b_page, KM_USER0); + kaddr = kmap_atomic(curr_bh->b_page); } curr_blkoff = prev_blkoff; cp = nilfs_cpfile_block_get_checkpoint( @@ -635,7 +635,7 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno) list = &cp->cp_snapshot_list; prev = le64_to_cpu(list->ssl_prev); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (prev != 0) { ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0, @@ -647,29 +647,29 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno) get_bh(prev_bh); } - kaddr = kmap_atomic(curr_bh->b_page, KM_USER0); + kaddr = kmap_atomic(curr_bh->b_page); list = nilfs_cpfile_block_get_snapshot_list( cpfile, curr, curr_bh, kaddr); list->ssl_prev = cpu_to_le64(cno); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); + kaddr = kmap_atomic(cp_bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); cp->cp_snapshot_list.ssl_next = cpu_to_le64(curr); cp->cp_snapshot_list.ssl_prev = cpu_to_le64(prev); nilfs_checkpoint_set_snapshot(cp); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(prev_bh->b_page, KM_USER0); + kaddr = kmap_atomic(prev_bh->b_page); list = nilfs_cpfile_block_get_snapshot_list( cpfile, prev, prev_bh, kaddr); list->ssl_next = cpu_to_le64(cno); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); le64_add_cpu(&header->ch_nsnapshots, 1); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(prev_bh); mark_buffer_dirty(curr_bh); @@ -710,23 +710,23 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno) ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh); if (ret < 0) goto out_sem; - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); + kaddr = kmap_atomic(cp_bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); if (nilfs_checkpoint_invalid(cp)) { ret = -ENOENT; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); goto out_cp; } if (!nilfs_checkpoint_snapshot(cp)) { ret = 0; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); goto out_cp; } list = &cp->cp_snapshot_list; next = le64_to_cpu(list->ssl_next); prev = le64_to_cpu(list->ssl_prev); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); ret = nilfs_cpfile_get_header_block(cpfile, &header_bh); if (ret < 0) @@ -750,29 +750,29 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno) get_bh(prev_bh); } - kaddr = kmap_atomic(next_bh->b_page, KM_USER0); + kaddr = kmap_atomic(next_bh->b_page); list = nilfs_cpfile_block_get_snapshot_list( cpfile, next, next_bh, kaddr); list->ssl_prev = cpu_to_le64(prev); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(prev_bh->b_page, KM_USER0); + kaddr = kmap_atomic(prev_bh->b_page); list = nilfs_cpfile_block_get_snapshot_list( cpfile, prev, prev_bh, kaddr); list->ssl_next = cpu_to_le64(next); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); + kaddr = kmap_atomic(cp_bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); cp->cp_snapshot_list.ssl_next = cpu_to_le64(0); cp->cp_snapshot_list.ssl_prev = cpu_to_le64(0); nilfs_checkpoint_clear_snapshot(cp); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); le64_add_cpu(&header->ch_nsnapshots, -1); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(next_bh); mark_buffer_dirty(prev_bh); @@ -829,13 +829,13 @@ int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno) ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh); if (ret < 0) goto out; - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr); if (nilfs_checkpoint_invalid(cp)) ret = -ENOENT; else ret = nilfs_checkpoint_snapshot(cp); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); out: @@ -912,12 +912,12 @@ int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat) ret = nilfs_cpfile_get_header_block(cpfile, &bh); if (ret < 0) goto out_sem; - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr); cpstat->cs_cno = nilfs_mdt_cno(cpfile); cpstat->cs_ncps = le64_to_cpu(header->ch_ncheckpoints); cpstat->cs_nsss = le64_to_cpu(header->ch_nsnapshots); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh); out_sem: diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c index fcc2f869af1..b5c13f3576b 100644 --- a/fs/nilfs2/dat.c +++ b/fs/nilfs2/dat.c @@ -85,13 +85,13 @@ void nilfs_dat_commit_alloc(struct inode *dat, struct nilfs_palloc_req *req) struct nilfs_dat_entry *entry; void *kaddr; - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); entry->de_start = cpu_to_le64(NILFS_CNO_MIN); entry->de_end = cpu_to_le64(NILFS_CNO_MAX); entry->de_blocknr = cpu_to_le64(0); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_palloc_commit_alloc_entry(dat, req); nilfs_dat_commit_entry(dat, req); @@ -109,13 +109,13 @@ static void nilfs_dat_commit_free(struct inode *dat, struct nilfs_dat_entry *entry; void *kaddr; - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); entry->de_start = cpu_to_le64(NILFS_CNO_MIN); entry->de_end = cpu_to_le64(NILFS_CNO_MIN); entry->de_blocknr = cpu_to_le64(0); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_dat_commit_entry(dat, req); nilfs_palloc_commit_free_entry(dat, req); @@ -136,12 +136,12 @@ void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req, struct nilfs_dat_entry *entry; void *kaddr; - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); entry->de_start = cpu_to_le64(nilfs_mdt_cno(dat)); entry->de_blocknr = cpu_to_le64(blocknr); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_dat_commit_entry(dat, req); } @@ -160,12 +160,12 @@ int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req) return ret; } - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); start = le64_to_cpu(entry->de_start); blocknr = le64_to_cpu(entry->de_blocknr); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (blocknr == 0) { ret = nilfs_palloc_prepare_free_entry(dat, req); @@ -186,7 +186,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req, sector_t blocknr; void *kaddr; - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); end = start = le64_to_cpu(entry->de_start); @@ -196,7 +196,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req, } entry->de_end = cpu_to_le64(end); blocknr = le64_to_cpu(entry->de_blocknr); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (blocknr == 0) nilfs_dat_commit_free(dat, req); @@ -211,12 +211,12 @@ void nilfs_dat_abort_end(struct inode *dat, struct nilfs_palloc_req *req) sector_t blocknr; void *kaddr; - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req->pr_entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, req->pr_entry_bh, kaddr); start = le64_to_cpu(entry->de_start); blocknr = le64_to_cpu(entry->de_blocknr); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (start == nilfs_mdt_cno(dat) && blocknr == 0) nilfs_palloc_abort_free_entry(dat, req); @@ -346,20 +346,20 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr) } } - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); if (unlikely(entry->de_blocknr == cpu_to_le64(0))) { printk(KERN_CRIT "%s: vbn = %llu, [%llu, %llu)\n", __func__, (unsigned long long)vblocknr, (unsigned long long)le64_to_cpu(entry->de_start), (unsigned long long)le64_to_cpu(entry->de_end)); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(entry_bh); return -EINVAL; } WARN_ON(blocknr == 0); entry->de_blocknr = cpu_to_le64(blocknr); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(entry_bh); nilfs_mdt_mark_dirty(dat); @@ -409,7 +409,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp) } } - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(entry_bh->b_page); entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); blocknr = le64_to_cpu(entry->de_blocknr); if (blocknr == 0) { @@ -419,7 +419,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp) *blocknrp = blocknr; out: - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(entry_bh); return ret; } @@ -440,7 +440,7 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz, 0, &entry_bh); if (ret < 0) return ret; - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(entry_bh->b_page); /* last virtual block number in this block */ first = vinfo->vi_vblocknr; do_div(first, entries_per_block); @@ -456,7 +456,7 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz, vinfo->vi_end = le64_to_cpu(entry->de_end); vinfo->vi_blocknr = le64_to_cpu(entry->de_blocknr); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(entry_bh); } diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c index ca35b3a46d1..df1a7fb238d 100644 --- a/fs/nilfs2/dir.c +++ b/fs/nilfs2/dir.c @@ -602,7 +602,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent) unlock_page(page); goto fail; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr, 0, chunk_size); de = (struct nilfs_dir_entry *)kaddr; de->name_len = 1; @@ -617,7 +617,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent) de->inode = cpu_to_le64(parent->i_ino); memcpy(de->name, "..\0", 4); nilfs_set_de_type(de, inode); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_commit_chunk(page, mapping, 0, chunk_size); fail: page_cache_release(page); diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c index 684d76300a8..5a48df79d67 100644 --- a/fs/nilfs2/ifile.c +++ b/fs/nilfs2/ifile.c @@ -122,11 +122,11 @@ int nilfs_ifile_delete_inode(struct inode *ifile, ino_t ino) return ret; } - kaddr = kmap_atomic(req.pr_entry_bh->b_page, KM_USER0); + kaddr = kmap_atomic(req.pr_entry_bh->b_page); raw_inode = nilfs_palloc_block_get_entry(ifile, req.pr_entry_nr, req.pr_entry_bh, kaddr); raw_inode->i_flags = 0; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(req.pr_entry_bh); brelse(req.pr_entry_bh); diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index 886649627c3..2a70fce70c6 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -603,6 +603,8 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp, nsegs = argv[4].v_nmembs; if (argv[4].v_size != argsz[4]) goto out; + if (nsegs > UINT_MAX / sizeof(__u64)) + goto out; /* * argv[4] points to segment numbers this ioctl cleans. We diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 800e8d78a83..f9897d09c69 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -58,12 +58,12 @@ nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block, set_buffer_mapped(bh); - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); memset(kaddr + bh_offset(bh), 0, 1 << inode->i_blkbits); if (init_block) init_block(inode, bh, kaddr); flush_dcache_page(bh->b_page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); set_buffer_uptodate(bh); mark_buffer_dirty(bh); diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index 1cd3f624dff..fce2bbee66d 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -193,9 +193,6 @@ static int nilfs_link(struct dentry *old_dentry, struct inode *dir, struct nilfs_transaction_info ti; int err; - if (inode->i_nlink >= NILFS_LINK_MAX) - return -EMLINK; - err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; @@ -219,9 +216,6 @@ static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct nilfs_transaction_info ti; int err; - if (dir->i_nlink >= NILFS_LINK_MAX) - return -EMLINK; - err = nilfs_transaction_begin(dir->i_sb, &ti, 1); if (err) return err; @@ -400,11 +394,6 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry, drop_nlink(new_inode); nilfs_mark_inode_dirty(new_inode); } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= NILFS_LINK_MAX) - goto out_dir; - } err = nilfs_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 65221a04c6f..3e7b2a0dc0c 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -119,11 +119,11 @@ void nilfs_copy_buffer(struct buffer_head *dbh, struct buffer_head *sbh) struct page *spage = sbh->b_page, *dpage = dbh->b_page; struct buffer_head *bh; - kaddr0 = kmap_atomic(spage, KM_USER0); - kaddr1 = kmap_atomic(dpage, KM_USER1); + kaddr0 = kmap_atomic(spage); + kaddr1 = kmap_atomic(dpage); memcpy(kaddr1 + bh_offset(dbh), kaddr0 + bh_offset(sbh), sbh->b_size); - kunmap_atomic(kaddr1, KM_USER1); - kunmap_atomic(kaddr0, KM_USER0); + kunmap_atomic(kaddr1); + kunmap_atomic(kaddr0); dbh->b_state = sbh->b_state & NILFS_BUFFER_INHERENT_BITS; dbh->b_blocknr = sbh->b_blocknr; diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index a604ac0331b..f1626f5011c 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -493,9 +493,9 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs, if (unlikely(!bh_org)) return -EIO; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(kaddr + bh_offset(bh_org), bh_org->b_data, bh_org->b_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(bh_org); return 0; } diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 850a7c0228f..dc9a913784a 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -227,9 +227,9 @@ static void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf, crc = crc32_le(crc, bh->b_data, bh->b_size); } list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); crc = crc32_le(crc, kaddr + bh_offset(bh), bh->b_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } raw_sum->ss_datasum = cpu_to_le32(crc); } diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 0a0aba617d8..c5b7653a439 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -111,11 +111,11 @@ static void nilfs_sufile_mod_counter(struct buffer_head *header_bh, struct nilfs_sufile_header *header; void *kaddr; - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); le64_add_cpu(&header->sh_ncleansegs, ncleanadd); le64_add_cpu(&header->sh_ndirtysegs, ndirtyadd); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(header_bh); } @@ -319,11 +319,11 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump) ret = nilfs_sufile_get_header_block(sufile, &header_bh); if (ret < 0) goto out_sem; - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); ncleansegs = le64_to_cpu(header->sh_ncleansegs); last_alloc = le64_to_cpu(header->sh_last_alloc); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nsegments = nilfs_sufile_get_nsegments(sufile); maxsegnum = sui->allocmax; @@ -356,7 +356,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump) &su_bh); if (ret < 0) goto out_header; - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage( sufile, segnum, su_bh, kaddr); @@ -367,14 +367,14 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump) continue; /* found a clean segment */ nilfs_segment_usage_set_dirty(su); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); le64_add_cpu(&header->sh_ncleansegs, -1); le64_add_cpu(&header->sh_ndirtysegs, 1); header->sh_last_alloc = cpu_to_le64(segnum); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); sui->ncleansegs--; mark_buffer_dirty(header_bh); @@ -385,7 +385,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump) goto out_header; } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(su_bh); } @@ -407,16 +407,16 @@ void nilfs_sufile_do_cancel_free(struct inode *sufile, __u64 segnum, struct nilfs_segment_usage *su; void *kaddr; - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr); if (unlikely(!nilfs_segment_usage_clean(su))) { printk(KERN_WARNING "%s: segment %llu must be clean\n", __func__, (unsigned long long)segnum); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return; } nilfs_segment_usage_set_dirty(su); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_sufile_mod_counter(header_bh, -1, 1); NILFS_SUI(sufile)->ncleansegs--; @@ -433,11 +433,11 @@ void nilfs_sufile_do_scrap(struct inode *sufile, __u64 segnum, void *kaddr; int clean, dirty; - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr); if (su->su_flags == cpu_to_le32(1UL << NILFS_SEGMENT_USAGE_DIRTY) && su->su_nblocks == cpu_to_le32(0)) { - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return; } clean = nilfs_segment_usage_clean(su); @@ -447,7 +447,7 @@ void nilfs_sufile_do_scrap(struct inode *sufile, __u64 segnum, su->su_lastmod = cpu_to_le64(0); su->su_nblocks = cpu_to_le32(0); su->su_flags = cpu_to_le32(1UL << NILFS_SEGMENT_USAGE_DIRTY); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1); NILFS_SUI(sufile)->ncleansegs -= clean; @@ -464,12 +464,12 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum, void *kaddr; int sudirty; - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr); if (nilfs_segment_usage_clean(su)) { printk(KERN_WARNING "%s: segment %llu is already clean\n", __func__, (unsigned long long)segnum); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return; } WARN_ON(nilfs_segment_usage_error(su)); @@ -477,7 +477,7 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum, sudirty = nilfs_segment_usage_dirty(su); nilfs_segment_usage_set_clean(su); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(su_bh); nilfs_sufile_mod_counter(header_bh, 1, sudirty ? (u64)-1 : 0); @@ -525,13 +525,13 @@ int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, if (ret < 0) goto out_sem; - kaddr = kmap_atomic(bh->b_page, KM_USER0); + kaddr = kmap_atomic(bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, bh, kaddr); WARN_ON(nilfs_segment_usage_error(su)); if (modtime) su->su_lastmod = cpu_to_le64(modtime); su->su_nblocks = cpu_to_le32(nblocks); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(bh); nilfs_mdt_mark_dirty(sufile); @@ -572,7 +572,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat) if (ret < 0) goto out_sem; - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); sustat->ss_nsegs = nilfs_sufile_get_nsegments(sufile); sustat->ss_ncleansegs = le64_to_cpu(header->sh_ncleansegs); @@ -582,7 +582,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat) spin_lock(&nilfs->ns_last_segment_lock); sustat->ss_prot_seq = nilfs->ns_prot_seq; spin_unlock(&nilfs->ns_last_segment_lock); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(header_bh); out_sem: @@ -598,15 +598,15 @@ void nilfs_sufile_do_set_error(struct inode *sufile, __u64 segnum, void *kaddr; int suclean; - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr); if (nilfs_segment_usage_error(su)) { - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return; } suclean = nilfs_segment_usage_clean(su); nilfs_segment_usage_set_error(su); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (suclean) { nilfs_sufile_mod_counter(header_bh, -1, 0); @@ -675,7 +675,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile, /* hole */ continue; } - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage( sufile, segnum, su_bh, kaddr); su2 = su; @@ -684,7 +684,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile, ~(1UL << NILFS_SEGMENT_USAGE_ERROR)) || nilfs_segment_is_active(nilfs, segnum + j)) { ret = -EBUSY; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(su_bh); goto out_header; } @@ -696,7 +696,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile, nc++; } } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (nc > 0) { mark_buffer_dirty(su_bh); ncleaned += nc; @@ -772,10 +772,10 @@ int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs) sui->ncleansegs -= nsegs - newnsegs; } - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); header->sh_ncleansegs = cpu_to_le64(sui->ncleansegs); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); mark_buffer_dirty(header_bh); nilfs_mdt_mark_dirty(sufile); @@ -840,7 +840,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf, continue; } - kaddr = kmap_atomic(su_bh->b_page, KM_USER0); + kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage( sufile, segnum, su_bh, kaddr); for (j = 0; j < n; @@ -853,7 +853,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf, si->sui_flags |= (1UL << NILFS_SEGMENT_USAGE_ACTIVE); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(su_bh); } ret = nsegs; @@ -902,10 +902,10 @@ int nilfs_sufile_read(struct super_block *sb, size_t susize, goto failed; sui = NILFS_SUI(sufile); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + kaddr = kmap_atomic(header_bh->b_page); header = kaddr + bh_offset(header_bh); sui->ncleansegs = le64_to_cpu(header->sh_ncleansegs); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); brelse(header_bh); sui->allocmax = nilfs_sufile_get_nsegments(sufile) - 1; diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 08e3d4f9df1..1099a76cee5 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -917,9 +917,8 @@ static int nilfs_get_root_dentry(struct super_block *sb, if (root->cno == NILFS_CPTREE_CURRENT_CNO) { dentry = d_find_alias(inode); if (!dentry) { - dentry = d_alloc_root(inode); + dentry = d_make_root(inode); if (!dentry) { - iput(inode); ret = -ENOMEM; goto failed_dentry; } @@ -1059,6 +1058,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_export_op = &nilfs_export_ops; sb->s_root = NULL; sb->s_time_gran = 1; + sb->s_max_links = NILFS_LINK_MAX; bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info; sb->s_bdi = bdi ? : &default_backing_dev_info; diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index d3271409437..501b7f8b739 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -409,6 +409,12 @@ static int nilfs_store_disk_layout(struct the_nilfs *nilfs, nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block); nilfs->ns_r_segments_percentage = le32_to_cpu(sbp->s_r_segments_percentage); + if (nilfs->ns_r_segments_percentage < 1 || + nilfs->ns_r_segments_percentage > 99) { + printk(KERN_ERR "NILFS: invalid reserved segments percentage.\n"); + return -EINVAL; + } + nilfs_set_nsegments(nilfs, le64_to_cpu(sbp->s_nsegments)); nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed); return 0; @@ -515,6 +521,7 @@ static int nilfs_load_super_block(struct the_nilfs *nilfs, brelse(sbh[1]); sbh[1] = NULL; sbp[1] = NULL; + valid[1] = 0; swp = 0; } if (!valid[swp]) { diff --git a/fs/notify/notification.c b/fs/notify/notification.c index ee188158a22..c887b1378f7 100644 --- a/fs/notify/notification.c +++ b/fs/notify/notification.c @@ -447,7 +447,7 @@ struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, return event; } -__init int fsnotify_notification_init(void) +static __init int fsnotify_notification_init(void) { fsnotify_event_cachep = KMEM_CACHE(fsnotify_event, SLAB_PANIC); fsnotify_event_holder_cachep = KMEM_CACHE(fsnotify_event_holder, SLAB_PANIC); @@ -461,4 +461,3 @@ __init int fsnotify_notification_init(void) return 0; } subsys_initcall(fsnotify_notification_init); - diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index 0b1e885b8cf..fa9c05f97af 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -94,11 +94,11 @@ static void ntfs_end_buffer_async_read(struct buffer_head *bh, int uptodate) if (file_ofs < init_size) ofs = init_size - file_ofs; local_irq_save(flags); - kaddr = kmap_atomic(page, KM_BIO_SRC_IRQ); + kaddr = kmap_atomic(page); memset(kaddr + bh_offset(bh) + ofs, 0, bh->b_size - ofs); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_BIO_SRC_IRQ); + kunmap_atomic(kaddr); local_irq_restore(flags); } } else { @@ -147,11 +147,11 @@ static void ntfs_end_buffer_async_read(struct buffer_head *bh, int uptodate) /* Should have been verified before we got here... */ BUG_ON(!recs); local_irq_save(flags); - kaddr = kmap_atomic(page, KM_BIO_SRC_IRQ); + kaddr = kmap_atomic(page); for (i = 0; i < recs; i++) post_read_mst_fixup((NTFS_RECORD*)(kaddr + i * rec_size), rec_size); - kunmap_atomic(kaddr, KM_BIO_SRC_IRQ); + kunmap_atomic(kaddr); local_irq_restore(flags); flush_dcache_page(page); if (likely(page_uptodate && !PageError(page))) @@ -504,7 +504,7 @@ retry_readpage: /* Race with shrinking truncate. */ attr_len = i_size; } - addr = kmap_atomic(page, KM_USER0); + addr = kmap_atomic(page); /* Copy the data to the page. */ memcpy(addr, (u8*)ctx->attr + le16_to_cpu(ctx->attr->data.resident.value_offset), @@ -512,7 +512,7 @@ retry_readpage: /* Zero the remainder of the page. */ memset(addr + attr_len, 0, PAGE_CACHE_SIZE - attr_len); flush_dcache_page(page); - kunmap_atomic(addr, KM_USER0); + kunmap_atomic(addr); put_unm_err_out: ntfs_attr_put_search_ctx(ctx); unm_err_out: @@ -746,14 +746,14 @@ lock_retry_remap: unsigned long *bpos, *bend; /* Check if the buffer is zero. */ - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); bpos = (unsigned long *)(kaddr + bh_offset(bh)); bend = (unsigned long *)((u8*)bpos + blocksize); do { if (unlikely(*bpos)) break; } while (likely(++bpos < bend)); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (bpos == bend) { /* * Buffer is zero and sparse, no need to write @@ -1495,14 +1495,14 @@ retry_writepage: /* Shrinking cannot fail. */ BUG_ON(err); } - addr = kmap_atomic(page, KM_USER0); + addr = kmap_atomic(page); /* Copy the data from the page to the mft record. */ memcpy((u8*)ctx->attr + le16_to_cpu(ctx->attr->data.resident.value_offset), addr, attr_len); /* Zero out of bounds area in the page cache page. */ memset(addr + attr_len, 0, PAGE_CACHE_SIZE - attr_len); - kunmap_atomic(addr, KM_USER0); + kunmap_atomic(addr); flush_dcache_page(page); flush_dcache_mft_record_page(ctx->ntfs_ino); /* We are done with the page. */ diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c index f14fde2b03d..a27e3fecefa 100644 --- a/fs/ntfs/attrib.c +++ b/fs/ntfs/attrib.c @@ -1,7 +1,7 @@ /** * attrib.c - NTFS attribute operations. Part of the Linux-NTFS project. * - * Copyright (c) 2001-2007 Anton Altaparmakov + * Copyright (c) 2001-2012 Anton Altaparmakov and Tuxera Inc. * Copyright (c) 2002 Richard Russon * * This program/include file is free software; you can redistribute it and/or @@ -345,10 +345,10 @@ LCN ntfs_attr_vcn_to_lcn_nolock(ntfs_inode *ni, const VCN vcn, unsigned long flags; bool is_retry = false; + BUG_ON(!ni); ntfs_debug("Entering for i_ino 0x%lx, vcn 0x%llx, %s_locked.", ni->mft_no, (unsigned long long)vcn, write_locked ? "write" : "read"); - BUG_ON(!ni); BUG_ON(!NInoNonResident(ni)); BUG_ON(vcn < 0); if (!ni->runlist.rl) { @@ -469,9 +469,9 @@ runlist_element *ntfs_attr_find_vcn_nolock(ntfs_inode *ni, const VCN vcn, int err = 0; bool is_retry = false; + BUG_ON(!ni); ntfs_debug("Entering for i_ino 0x%lx, vcn 0x%llx, with%s ctx.", ni->mft_no, (unsigned long long)vcn, ctx ? "" : "out"); - BUG_ON(!ni); BUG_ON(!NInoNonResident(ni)); BUG_ON(vcn < 0); if (!ni->runlist.rl) { @@ -1656,12 +1656,12 @@ int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size) attr_size = le32_to_cpu(a->data.resident.value_length); BUG_ON(attr_size != data_size); if (page && !PageUptodate(page)) { - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(kaddr, (u8*)a + le16_to_cpu(a->data.resident.value_offset), attr_size); memset(kaddr + attr_size, 0, PAGE_CACHE_SIZE - attr_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); flush_dcache_page(page); SetPageUptodate(page); } @@ -1806,9 +1806,9 @@ undo_err_out: sizeof(a->data.resident.reserved)); /* Copy the data from the page back to the attribute value. */ if (page) { - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy((u8*)a + mp_ofs, kaddr, attr_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } /* Setup the allocated size in the ntfs inode in case it changed. */ write_lock_irqsave(&ni->size_lock, flags); @@ -2540,10 +2540,10 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val) size = PAGE_CACHE_SIZE; if (idx == end) size = end_ofs; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr + start_ofs, val, size - start_ofs); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); set_page_dirty(page); page_cache_release(page); balance_dirty_pages_ratelimited(mapping); @@ -2561,10 +2561,10 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val) "page (index 0x%lx).", idx); return -ENOMEM; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr, val, PAGE_CACHE_SIZE); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); /* * If the page has buffers, mark them uptodate since buffer * state and not page state is definitive in 2.6 kernels. @@ -2598,10 +2598,10 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val) "(error, index 0x%lx).", idx); return PTR_ERR(page); } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr, val, end_ofs); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); set_page_dirty(page); page_cache_release(page); balance_dirty_pages_ratelimited(mapping); diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index c587e2d2718..8639169221c 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -704,7 +704,7 @@ map_buffer_cached: u8 *kaddr; unsigned pofs; - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (bh_pos < pos) { pofs = bh_pos & ~PAGE_CACHE_MASK; memset(kaddr + pofs, 0, pos - bh_pos); @@ -713,7 +713,7 @@ map_buffer_cached: pofs = end & ~PAGE_CACHE_MASK; memset(kaddr + pofs, 0, bh_end - end); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); flush_dcache_page(page); } continue; @@ -1287,9 +1287,9 @@ static inline size_t ntfs_copy_from_user(struct page **pages, len = PAGE_CACHE_SIZE - ofs; if (len > bytes) len = bytes; - addr = kmap_atomic(*pages, KM_USER0); + addr = kmap_atomic(*pages); left = __copy_from_user_inatomic(addr + ofs, buf, len); - kunmap_atomic(addr, KM_USER0); + kunmap_atomic(addr); if (unlikely(left)) { /* Do it the slow way. */ addr = kmap(*pages); @@ -1401,10 +1401,10 @@ static inline size_t ntfs_copy_from_user_iovec(struct page **pages, len = PAGE_CACHE_SIZE - ofs; if (len > bytes) len = bytes; - addr = kmap_atomic(*pages, KM_USER0); + addr = kmap_atomic(*pages); copied = __ntfs_copy_from_user_iovec_inatomic(addr + ofs, *iov, *iov_ofs, len); - kunmap_atomic(addr, KM_USER0); + kunmap_atomic(addr); if (unlikely(copied != len)) { /* Do it the slow way. */ addr = kmap(*pages); @@ -1691,7 +1691,7 @@ static int ntfs_commit_pages_after_write(struct page **pages, BUG_ON(end > le32_to_cpu(a->length) - le16_to_cpu(a->data.resident.value_offset)); kattr = (u8*)a + le16_to_cpu(a->data.resident.value_offset); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); /* Copy the received data from the page to the mft record. */ memcpy(kattr + pos, kaddr + pos, bytes); /* Update the attribute length if necessary. */ @@ -1713,7 +1713,7 @@ static int ntfs_commit_pages_after_write(struct page **pages, flush_dcache_page(page); SetPageUptodate(page); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); /* Update initialized_size/i_size if necessary. */ read_lock_irqsave(&ni->size_lock, flags); initialized_size = ni->initialized_size; diff --git a/fs/ntfs/layout.h b/fs/ntfs/layout.h index faece719086..809c0e6d8e0 100644 --- a/fs/ntfs/layout.h +++ b/fs/ntfs/layout.h @@ -2008,14 +2008,14 @@ typedef struct { * * When a directory is small enough to fit inside the index root then this * is the only attribute describing the directory. When the directory is too - * large to fit in the index root, on the other hand, two aditional attributes + * large to fit in the index root, on the other hand, two additional attributes * are present: an index allocation attribute, containing sub-nodes of the B+ * directory tree (see below), and a bitmap attribute, describing which virtual * cluster numbers (vcns) in the index allocation attribute are in use by an * index block. * * NOTE: The root directory (FILE_root) contains an entry for itself. Other - * dircetories do not contain entries for themselves, though. + * directories do not contain entries for themselves, though. */ typedef struct { ATTR_TYPE type; /* Type of the indexed attribute. Is diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c index 382857f9c7d..3014a36a255 100644 --- a/fs/ntfs/mft.c +++ b/fs/ntfs/mft.c @@ -1,7 +1,7 @@ /** * mft.c - NTFS kernel mft record operations. Part of the Linux-NTFS project. * - * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc. + * Copyright (c) 2001-2012 Anton Altaparmakov and Tuxera Inc. * Copyright (c) 2002 Richard Russon * * This program/include file is free software; you can redistribute it and/or @@ -1367,7 +1367,7 @@ static int ntfs_mft_bitmap_extend_allocation_nolock(ntfs_volume *vol) ntfs_error(vol->sb, "Failed to merge runlists for mft " "bitmap."); if (ntfs_cluster_free_from_rl(vol, rl2)) { - ntfs_error(vol->sb, "Failed to dealocate " + ntfs_error(vol->sb, "Failed to deallocate " "allocated cluster.%s", es); NVolSetErrors(vol); } @@ -1805,7 +1805,7 @@ static int ntfs_mft_data_extend_allocation_nolock(ntfs_volume *vol) ntfs_error(vol->sb, "Failed to merge runlists for mft data " "attribute."); if (ntfs_cluster_free_from_rl(vol, rl2)) { - ntfs_error(vol->sb, "Failed to dealocate clusters " + ntfs_error(vol->sb, "Failed to deallocate clusters " "from the mft data attribute.%s", es); NVolSetErrors(vol); } diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 5a4a8af5c40..b341492542c 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -1,7 +1,7 @@ /* * super.c - NTFS kernel super block handling. Part of the Linux-NTFS project. * - * Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc. + * Copyright (c) 2001-2012 Anton Altaparmakov and Tuxera Inc. * Copyright (c) 2001,2002 Richard Russon * * This program/include file is free software; you can redistribute it and/or @@ -1239,7 +1239,6 @@ static int check_windows_hibernation_status(ntfs_volume *vol) { MFT_REF mref; struct inode *vi; - ntfs_inode *ni; struct page *page; u32 *kaddr, *kend; ntfs_name *name = NULL; @@ -1290,7 +1289,6 @@ static int check_windows_hibernation_status(ntfs_volume *vol) "is not the system volume.", i_size_read(vi)); goto iput_out; } - ni = NTFS_I(vi); page = ntfs_map_page(vi->i_mapping, 0); if (IS_ERR(page)) { ntfs_error(vol->sb, "Failed to read from hiberfil.sys."); @@ -2475,7 +2473,7 @@ static s64 get_nr_free_clusters(ntfs_volume *vol) nr_free -= PAGE_CACHE_SIZE * 8; continue; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); /* * Subtract the number of set bits. If this * is the last page and it is partial we don't really care as @@ -2485,7 +2483,7 @@ static s64 get_nr_free_clusters(ntfs_volume *vol) */ nr_free -= bitmap_weight(kaddr, PAGE_CACHE_SIZE * BITS_PER_BYTE); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); page_cache_release(page); } ntfs_debug("Finished reading $Bitmap, last index = 0x%lx.", index - 1); @@ -2546,7 +2544,7 @@ static unsigned long __get_nr_free_mft_records(ntfs_volume *vol, nr_free -= PAGE_CACHE_SIZE * 8; continue; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); /* * Subtract the number of set bits. If this * is the last page and it is partial we don't really care as @@ -2556,7 +2554,7 @@ static unsigned long __get_nr_free_mft_records(ntfs_volume *vol, */ nr_free -= bitmap_weight(kaddr, PAGE_CACHE_SIZE * BITS_PER_BYTE); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); page_cache_release(page); } ntfs_debug("Finished reading $MFT/$BITMAP, last index = 0x%lx.", @@ -2910,9 +2908,10 @@ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent) ntfs_error(sb, "Failed to load system files."); goto unl_upcase_iput_tmp_ino_err_out_now; } - if ((sb->s_root = d_alloc_root(vol->root_ino))) { - /* We grab a reference, simulating an ntfs_iget(). */ - ihold(vol->root_ino); + + /* We grab a reference, simulating an ntfs_iget(). */ + ihold(vol->root_ino); + if ((sb->s_root = d_make_root(vol->root_ino))) { ntfs_debug("Exiting, status successful."); /* Release the default upcase if it has no users. */ mutex_lock(&ntfs_lock); @@ -3160,6 +3159,8 @@ static int __init init_ntfs_fs(void) } printk(KERN_CRIT "NTFS: Failed to register NTFS filesystem driver!\n"); + /* Unregister the ntfs sysctls. */ + ntfs_sysctl(0); sysctl_err_out: kmem_cache_destroy(ntfs_big_inode_cache); big_inode_err_out: diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 78b68af3b0e..657743254eb 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -102,7 +102,7 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock, * copy, the data is still good. */ if (buffer_jbd(buffer_cache_bh) && ocfs2_inode_is_new(inode)) { - kaddr = kmap_atomic(bh_result->b_page, KM_USER0); + kaddr = kmap_atomic(bh_result->b_page); if (!kaddr) { mlog(ML_ERROR, "couldn't kmap!\n"); goto bail; @@ -110,7 +110,7 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock, memcpy(kaddr + (bh_result->b_size * iblock), buffer_cache_bh->b_data, bh_result->b_size); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); set_buffer_uptodate(bh_result); } brelse(buffer_cache_bh); @@ -236,13 +236,13 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page, return -EROFS; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (size) memcpy(kaddr, di->id2.i_data.id_data, size); /* Clear the remaining part of the page */ memset(kaddr + size, 0, PAGE_CACHE_SIZE - size); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); SetPageUptodate(page); @@ -689,7 +689,7 @@ static void ocfs2_clear_page_regions(struct page *page, ocfs2_figure_cluster_boundaries(osb, cpos, &cluster_start, &cluster_end); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); if (from || to) { if (from > cluster_start) @@ -700,7 +700,7 @@ static void ocfs2_clear_page_regions(struct page *page, memset(kaddr + cluster_start, 0, cluster_end - cluster_start); } - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } /* @@ -1981,9 +1981,9 @@ static void ocfs2_write_end_inline(struct inode *inode, loff_t pos, } } - kaddr = kmap_atomic(wc->w_target_page, KM_USER0); + kaddr = kmap_atomic(wc->w_target_page); memcpy(di->id2.i_data.id_data + pos, kaddr + pos, *copied); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); trace_ocfs2_write_end_inline( (unsigned long long)OCFS2_I(inode)->ip_blkno, diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index abfac0d7ae9..3b5825ef319 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -582,24 +582,14 @@ static int dlmfs_fill_super(struct super_block * sb, void * data, int silent) { - struct inode * inode; - struct dentry * root; - sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; sb->s_magic = DLMFS_MAGIC; sb->s_op = &dlmfs_ops; - inode = dlmfs_get_root_inode(sb); - if (!inode) - return -ENOMEM; - - root = d_alloc_root(inode); - if (!root) { - iput(inode); + sb->s_root = d_make_root(dlmfs_get_root_inode(sb)); + if (!sb->s_root) return -ENOMEM; - } - sb->s_root = root; return 0; } diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index be244692550..a9856e3eaaf 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -1053,7 +1053,7 @@ static int ocfs2_rename(struct inode *old_dir, handle_t *handle = NULL; struct buffer_head *old_dir_bh = NULL; struct buffer_head *new_dir_bh = NULL; - nlink_t old_dir_nlink = old_dir->i_nlink; + u32 old_dir_nlink = old_dir->i_nlink; struct ocfs2_dinode *old_di; struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 604e12c4e97..68f4541c2db 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1154,19 +1154,19 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) } status = ocfs2_mount_volume(sb); - if (osb->root_inode) - inode = igrab(osb->root_inode); - if (status < 0) goto read_super_error; + if (osb->root_inode) + inode = igrab(osb->root_inode); + if (!inode) { status = -EIO; mlog_errno(status); goto read_super_error; } - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { status = -ENOMEM; mlog_errno(status); @@ -1220,9 +1220,6 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) read_super_error: brelse(bh); - if (inode) - iput(inode); - if (osb) { atomic_set(&osb->vol_state, VOLUME_DISABLED); wake_up(&osb->osb_mount_event); @@ -1627,21 +1624,17 @@ static int __init ocfs2_init(void) init_waitqueue_head(&ocfs2__ioend_wq[i]); status = init_ocfs2_uptodate_cache(); - if (status < 0) { - mlog_errno(status); - goto leave; - } + if (status < 0) + goto out1; status = ocfs2_initialize_mem_caches(); - if (status < 0) { - mlog_errno(status); - goto leave; - } + if (status < 0) + goto out2; ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); if (!ocfs2_wq) { status = -ENOMEM; - goto leave; + goto out3; } ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); @@ -1653,17 +1646,23 @@ static int __init ocfs2_init(void) ocfs2_set_locking_protocol(); status = register_quota_format(&ocfs2_quota_format); -leave: - if (status < 0) { - ocfs2_free_mem_caches(); - exit_ocfs2_uptodate_cache(); - mlog_errno(status); - } + if (status < 0) + goto out4; + status = register_filesystem(&ocfs2_fs_type); + if (!status) + return 0; - if (status >= 0) { - return register_filesystem(&ocfs2_fs_type); - } else - return -1; + unregister_quota_format(&ocfs2_quota_format); +out4: + destroy_workqueue(ocfs2_wq); + debugfs_remove(ocfs2_debugfs_root); +out3: + ocfs2_free_mem_caches(); +out2: + exit_ocfs2_uptodate_cache(); +out1: + mlog_errno(status); + return status; } static void __exit ocfs2_exit(void) diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index 6065bb0ba20..dbc84222258 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -539,11 +539,9 @@ static int omfs_fill_super(struct super_block *sb, void *data, int silent) goto out_brelse_bh2; } - sb->s_root = d_alloc_root(root); - if (!sb->s_root) { - iput(root); + sb->s_root = d_make_root(root); + if (!sb->s_root) goto out_brelse_bh2; - } printk(KERN_DEBUG "omfs: Mounted volume %s\n", omfs_rb->r_name); ret = 0; diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c index a88c03bc749..bc49c975d50 100644 --- a/fs/openpromfs/inode.c +++ b/fs/openpromfs/inode.c @@ -408,13 +408,12 @@ static int openprom_fill_super(struct super_block *s, void *data, int silent) oi->type = op_inode_node; oi->u.node = of_find_node_by_path("/"); - s->s_root = d_alloc_root(root_inode); + s->s_root = d_make_root(root_inode); if (!s->s_root) goto out_no_root_dentry; return 0; out_no_root_dentry: - iput(root_inode); ret = -ENOMEM; out_no_root: printk("openprom_fill_super: get root inode failed\n"); diff --git a/fs/pipe.c b/fs/pipe.c index a932ced92a1..25feaa3faac 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -13,6 +13,7 @@ #include <linux/fs.h> #include <linux/log2.h> #include <linux/mount.h> +#include <linux/magic.h> #include <linux/pipe_fs_i.h> #include <linux/uio.h> #include <linux/highmem.h> @@ -230,7 +231,7 @@ void *generic_pipe_buf_map(struct pipe_inode_info *pipe, { if (atomic) { buf->flags |= PIPE_BUF_FLAG_ATOMIC; - return kmap_atomic(buf->page, KM_USER0); + return kmap_atomic(buf->page); } return kmap(buf->page); @@ -251,7 +252,7 @@ void generic_pipe_buf_unmap(struct pipe_inode_info *pipe, { if (buf->flags & PIPE_BUF_FLAG_ATOMIC) { buf->flags &= ~PIPE_BUF_FLAG_ATOMIC; - kunmap_atomic(map_data, KM_USER0); + kunmap_atomic(map_data); } else kunmap(buf->page); } @@ -565,14 +566,14 @@ redo1: iov_fault_in_pages_read(iov, chars); redo2: if (atomic) - src = kmap_atomic(page, KM_USER0); + src = kmap_atomic(page); else src = kmap(page); error = pipe_iov_copy_from_user(src, iov, chars, atomic); if (atomic) - kunmap_atomic(src, KM_USER0); + kunmap_atomic(src); else kunmap(page); diff --git a/fs/posix_acl.c b/fs/posix_acl.c index cea4623f1ed..5e325a42e33 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -18,7 +18,7 @@ #include <linux/fs.h> #include <linux/sched.h> #include <linux/posix_acl.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/errno.h> diff --git a/fs/proc/array.c b/fs/proc/array.c index c602b8d20f0..fbb53c24908 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -462,59 +462,56 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, /* convert nsec -> ticks */ start_time = nsec_to_clock_t(start_time); - seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \ -%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \ -%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld %lu %lu %lu\n", - pid_nr_ns(pid, ns), - tcomm, - state, - ppid, - pgid, - sid, - tty_nr, - tty_pgrp, - task->flags, - min_flt, - cmin_flt, - maj_flt, - cmaj_flt, - cputime_to_clock_t(utime), - cputime_to_clock_t(stime), - cputime_to_clock_t(cutime), - cputime_to_clock_t(cstime), - priority, - nice, - num_threads, - start_time, - vsize, - mm ? get_mm_rss(mm) : 0, - rsslim, - mm ? (permitted ? mm->start_code : 1) : 0, - mm ? (permitted ? mm->end_code : 1) : 0, - (permitted && mm) ? mm->start_stack : 0, - esp, - eip, - /* The signal information here is obsolete. - * It must be decimal for Linux 2.0 compatibility. - * Use /proc/#/status for real-time signals. - */ - task->pending.signal.sig[0] & 0x7fffffffUL, - task->blocked.sig[0] & 0x7fffffffUL, - sigign .sig[0] & 0x7fffffffUL, - sigcatch .sig[0] & 0x7fffffffUL, - wchan, - 0UL, - 0UL, - task->exit_signal, - task_cpu(task), - task->rt_priority, - task->policy, - (unsigned long long)delayacct_blkio_ticks(task), - cputime_to_clock_t(gtime), - cputime_to_clock_t(cgtime), - (mm && permitted) ? mm->start_data : 0, - (mm && permitted) ? mm->end_data : 0, - (mm && permitted) ? mm->start_brk : 0); + seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state); + seq_put_decimal_ll(m, ' ', ppid); + seq_put_decimal_ll(m, ' ', pgid); + seq_put_decimal_ll(m, ' ', sid); + seq_put_decimal_ll(m, ' ', tty_nr); + seq_put_decimal_ll(m, ' ', tty_pgrp); + seq_put_decimal_ull(m, ' ', task->flags); + seq_put_decimal_ull(m, ' ', min_flt); + seq_put_decimal_ull(m, ' ', cmin_flt); + seq_put_decimal_ull(m, ' ', maj_flt); + seq_put_decimal_ull(m, ' ', cmaj_flt); + seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime)); + seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime)); + seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime)); + seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime)); + seq_put_decimal_ll(m, ' ', priority); + seq_put_decimal_ll(m, ' ', nice); + seq_put_decimal_ll(m, ' ', num_threads); + seq_put_decimal_ull(m, ' ', 0); + seq_put_decimal_ull(m, ' ', start_time); + seq_put_decimal_ull(m, ' ', vsize); + seq_put_decimal_ll(m, ' ', mm ? get_mm_rss(mm) : 0); + seq_put_decimal_ull(m, ' ', rsslim); + seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0); + seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0); + seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0); + seq_put_decimal_ull(m, ' ', esp); + seq_put_decimal_ull(m, ' ', eip); + /* The signal information here is obsolete. + * It must be decimal for Linux 2.0 compatibility. + * Use /proc/#/status for real-time signals. + */ + seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL); + seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL); + seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL); + seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL); + seq_put_decimal_ull(m, ' ', wchan); + seq_put_decimal_ull(m, ' ', 0); + seq_put_decimal_ull(m, ' ', 0); + seq_put_decimal_ll(m, ' ', task->exit_signal); + seq_put_decimal_ll(m, ' ', task_cpu(task)); + seq_put_decimal_ull(m, ' ', task->rt_priority); + seq_put_decimal_ull(m, ' ', task->policy); + seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task)); + seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime)); + seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime)); + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_data : 0); + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->end_data : 0); + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_brk : 0); + seq_putc(m, '\n'); if (mm) mmput(mm); return 0; @@ -542,8 +539,20 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, size = task_statm(mm, &shared, &text, &data, &resident); mmput(mm); } - seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n", - size, resident, shared, text, data); + /* + * For quick read, open code by putting numbers directly + * expected format is + * seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n", + * size, resident, shared, text, data); + */ + seq_put_decimal_ull(m, 0, size); + seq_put_decimal_ull(m, ' ', resident); + seq_put_decimal_ull(m, ' ', shared); + seq_put_decimal_ull(m, ' ', text); + seq_put_decimal_ull(m, ' ', 0); + seq_put_decimal_ull(m, ' ', text); + seq_put_decimal_ull(m, ' ', 0); + seq_putc(m, '\n'); return 0; } diff --git a/fs/proc/base.c b/fs/proc/base.c index 9cde9edf9c4..3b42c1418f3 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -198,26 +198,6 @@ static int proc_root_link(struct dentry *dentry, struct path *path) return result; } -static struct mm_struct *mm_access(struct task_struct *task, unsigned int mode) -{ - struct mm_struct *mm; - int err; - - err = mutex_lock_killable(&task->signal->cred_guard_mutex); - if (err) - return ERR_PTR(err); - - mm = get_task_mm(task); - if (mm && mm != current->mm && - !ptrace_may_access(task, mode)) { - mmput(mm); - mm = ERR_PTR(-EACCES); - } - mutex_unlock(&task->signal->cred_guard_mutex); - - return mm; -} - struct mm_struct *mm_for_maps(struct task_struct *task) { return mm_access(task, PTRACE_MODE_READ); @@ -711,6 +691,13 @@ static int mem_open(struct inode* inode, struct file* file) if (IS_ERR(mm)) return PTR_ERR(mm); + if (mm) { + /* ensure this mm_struct can't be freed */ + atomic_inc(&mm->mm_count); + /* but do not pin its memory */ + mmput(mm); + } + /* OK to pass negative loff_t, we can catch out-of-range */ file->f_mode |= FMODE_UNSIGNED_OFFSET; file->private_data = mm; @@ -718,57 +705,13 @@ static int mem_open(struct inode* inode, struct file* file) return 0; } -static ssize_t mem_read(struct file * file, char __user * buf, - size_t count, loff_t *ppos) +static ssize_t mem_rw(struct file *file, char __user *buf, + size_t count, loff_t *ppos, int write) { - int ret; - char *page; - unsigned long src = *ppos; struct mm_struct *mm = file->private_data; - - if (!mm) - return 0; - - page = (char *)__get_free_page(GFP_TEMPORARY); - if (!page) - return -ENOMEM; - - ret = 0; - - while (count > 0) { - int this_len, retval; - - this_len = (count > PAGE_SIZE) ? PAGE_SIZE : count; - retval = access_remote_vm(mm, src, page, this_len, 0); - if (!retval) { - if (!ret) - ret = -EIO; - break; - } - - if (copy_to_user(buf, page, retval)) { - ret = -EFAULT; - break; - } - - ret += retval; - src += retval; - buf += retval; - count -= retval; - } - *ppos = src; - - free_page((unsigned long) page); - return ret; -} - -static ssize_t mem_write(struct file * file, const char __user *buf, - size_t count, loff_t *ppos) -{ - int copied; + unsigned long addr = *ppos; + ssize_t copied; char *page; - unsigned long dst = *ppos; - struct mm_struct *mm = file->private_data; if (!mm) return 0; @@ -778,31 +721,54 @@ static ssize_t mem_write(struct file * file, const char __user *buf, return -ENOMEM; copied = 0; + if (!atomic_inc_not_zero(&mm->mm_users)) + goto free; + while (count > 0) { - int this_len, retval; + int this_len = min_t(int, count, PAGE_SIZE); - this_len = (count > PAGE_SIZE) ? PAGE_SIZE : count; - if (copy_from_user(page, buf, this_len)) { + if (write && copy_from_user(page, buf, this_len)) { copied = -EFAULT; break; } - retval = access_remote_vm(mm, dst, page, this_len, 1); - if (!retval) { + + this_len = access_remote_vm(mm, addr, page, this_len, write); + if (!this_len) { if (!copied) copied = -EIO; break; } - copied += retval; - buf += retval; - dst += retval; - count -= retval; + + if (!write && copy_to_user(buf, page, this_len)) { + copied = -EFAULT; + break; + } + + buf += this_len; + addr += this_len; + copied += this_len; + count -= this_len; } - *ppos = dst; + *ppos = addr; + mmput(mm); +free: free_page((unsigned long) page); return copied; } +static ssize_t mem_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + return mem_rw(file, buf, count, ppos, 0); +} + +static ssize_t mem_write(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + return mem_rw(file, (char __user*)buf, count, ppos, 1); +} + loff_t mem_lseek(struct file *file, loff_t offset, int orig) { switch (orig) { @@ -822,8 +788,8 @@ loff_t mem_lseek(struct file *file, loff_t offset, int orig) static int mem_release(struct inode *inode, struct file *file) { struct mm_struct *mm = file->private_data; - - mmput(mm); + if (mm) + mmdrop(mm); return 0; } @@ -1344,8 +1310,7 @@ sched_autogroup_write(struct file *file, const char __user *buf, if (!p) return -ESRCH; - err = nice; - err = proc_sched_autogroup_set_nice(p, &err); + err = proc_sched_autogroup_set_nice(p, nice); if (err) count = err; @@ -3024,9 +2989,9 @@ static const struct pid_entry tgid_base_stuff[] = { INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tgid_stat), ONE("statm", S_IRUGO, proc_pid_statm), - REG("maps", S_IRUGO, proc_maps_operations), + REG("maps", S_IRUGO, proc_pid_maps_operations), #ifdef CONFIG_NUMA - REG("numa_maps", S_IRUGO, proc_numa_maps_operations), + REG("numa_maps", S_IRUGO, proc_pid_numa_maps_operations), #endif REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations), LNK("cwd", proc_cwd_link), @@ -3037,7 +3002,7 @@ static const struct pid_entry tgid_base_stuff[] = { REG("mountstats", S_IRUSR, proc_mountstats_operations), #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), - REG("smaps", S_IRUGO, proc_smaps_operations), + REG("smaps", S_IRUGO, proc_pid_smaps_operations), REG("pagemap", S_IRUGO, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY @@ -3383,9 +3348,9 @@ static const struct pid_entry tid_base_stuff[] = { INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tid_stat), ONE("statm", S_IRUGO, proc_pid_statm), - REG("maps", S_IRUGO, proc_maps_operations), + REG("maps", S_IRUGO, proc_tid_maps_operations), #ifdef CONFIG_NUMA - REG("numa_maps", S_IRUGO, proc_numa_maps_operations), + REG("numa_maps", S_IRUGO, proc_tid_numa_maps_operations), #endif REG("mem", S_IRUSR|S_IWUSR, proc_mem_operations), LNK("cwd", proc_cwd_link), @@ -3395,7 +3360,7 @@ static const struct pid_entry tid_base_stuff[] = { REG("mountinfo", S_IRUGO, proc_mountinfo_operations), #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), - REG("smaps", S_IRUGO, proc_smaps_operations), + REG("smaps", S_IRUGO, proc_tid_smaps_operations), REG("pagemap", S_IRUGO, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 84fd3235a59..8461a7b82fd 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -486,8 +486,6 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) int proc_fill_super(struct super_block *s) { - struct inode * root_inode; - s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC; s->s_blocksize = 1024; s->s_blocksize_bits = 10; @@ -496,19 +494,11 @@ int proc_fill_super(struct super_block *s) s->s_time_gran = 1; pde_get(&proc_root); - root_inode = proc_get_inode(s, &proc_root); - if (!root_inode) - goto out_no_root; - root_inode->i_uid = 0; - root_inode->i_gid = 0; - s->s_root = d_alloc_root(root_inode); - if (!s->s_root) - goto out_no_root; - return 0; + s->s_root = d_make_root(proc_get_inode(s, &proc_root)); + if (s->s_root) + return 0; -out_no_root: printk("proc_read_super: get root inode failed\n"); - iput(root_inode); pde_put(&proc_root); return -ENOMEM; } diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 292577531ad..5f79bb8b4c6 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -10,12 +10,15 @@ */ #include <linux/proc_fs.h> +struct ctl_table_header; extern struct proc_dir_entry proc_root; #ifdef CONFIG_PROC_SYSCTL extern int proc_sys_init(void); +extern void sysctl_head_put(struct ctl_table_header *head); #else static inline void proc_sys_init(void) { } +static inline void sysctl_head_put(struct ctl_table_header *head) { } #endif #ifdef CONFIG_NET extern int proc_net_init(void); @@ -53,9 +56,12 @@ extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task); extern loff_t mem_lseek(struct file *file, loff_t offset, int orig); -extern const struct file_operations proc_maps_operations; -extern const struct file_operations proc_numa_maps_operations; -extern const struct file_operations proc_smaps_operations; +extern const struct file_operations proc_pid_maps_operations; +extern const struct file_operations proc_tid_maps_operations; +extern const struct file_operations proc_pid_numa_maps_operations; +extern const struct file_operations proc_tid_numa_maps_operations; +extern const struct file_operations proc_pid_smaps_operations; +extern const struct file_operations proc_tid_smaps_operations; extern const struct file_operations proc_clear_refs_operations; extern const struct file_operations proc_pagemap_operations; extern const struct file_operations proc_net_operations; diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index d245cb23dd7..86c67eee439 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -157,7 +157,8 @@ static int kcore_update_ram(void) #ifdef CONFIG_SPARSEMEM_VMEMMAP /* calculate vmemmap's address from given system ram pfn and register it */ -int get_sparsemem_vmemmap_info(struct kcore_list *ent, struct list_head *head) +static int +get_sparsemem_vmemmap_info(struct kcore_list *ent, struct list_head *head) { unsigned long pfn = __pa(ent->addr) >> PAGE_SHIFT; unsigned long nr_pages = ent->size >> PAGE_SHIFT; @@ -189,7 +190,8 @@ int get_sparsemem_vmemmap_info(struct kcore_list *ent, struct list_head *head) } #else -int get_sparsemem_vmemmap_info(struct kcore_list *ent, struct list_head *head) +static int +get_sparsemem_vmemmap_info(struct kcore_list *ent, struct list_head *head) { return 1; } @@ -513,7 +515,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) n = copy_to_user(buffer, (char *)start, tsz); /* - * We cannot distingush between fault on source + * We cannot distinguish between fault on source * and fault on destination. When this happens * we clear too and hope it will trigger the * EFAULT again. diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c index 27da860115c..3551f1f839e 100644 --- a/fs/proc/namespaces.c +++ b/fs/proc/namespaces.c @@ -53,7 +53,7 @@ static struct dentry *proc_ns_instantiate(struct inode *dir, ei->ns_ops = ns_ops; ei->ns = ns; - dentry->d_op = &pid_dentry_operations; + d_set_d_op(dentry, &pid_dentry_operations); d_add(dentry, inode); /* Close the race of the process dying before we return the dentry */ if (pid_revalidate(dentry, NULL)) diff --git a/fs/proc/page.c b/fs/proc/page.c index 6d8e6a9e93a..7fcd0d60a96 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -115,6 +115,8 @@ u64 stable_page_flags(struct page *page) u |= 1 << KPF_COMPOUND_TAIL; if (PageHuge(page)) u |= 1 << KPF_HUGE; + else if (PageTransCompound(page)) + u |= 1 << KPF_THP; /* * Caveats on high order pages: page->_count will only be set diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index a6b62173d4c..21d836f4029 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -6,7 +6,10 @@ #include <linux/poll.h> #include <linux/proc_fs.h> #include <linux/security.h> +#include <linux/sched.h> #include <linux/namei.h> +#include <linux/mm.h> +#include <linux/module.h> #include "internal.h" static const struct dentry_operations proc_sys_dentry_operations; @@ -24,6 +27,371 @@ void proc_sys_poll_notify(struct ctl_table_poll *poll) wake_up_interruptible(&poll->wait); } +static struct ctl_table root_table[] = { + { + .procname = "", + .mode = S_IFDIR|S_IRUGO|S_IXUGO, + }, + { } +}; +static struct ctl_table_root sysctl_table_root = { + .default_set.dir.header = { + {{.count = 1, + .nreg = 1, + .ctl_table = root_table }}, + .ctl_table_arg = root_table, + .root = &sysctl_table_root, + .set = &sysctl_table_root.default_set, + }, +}; + +static DEFINE_SPINLOCK(sysctl_lock); + +static void drop_sysctl_table(struct ctl_table_header *header); +static int sysctl_follow_link(struct ctl_table_header **phead, + struct ctl_table **pentry, struct nsproxy *namespaces); +static int insert_links(struct ctl_table_header *head); +static void put_links(struct ctl_table_header *header); + +static void sysctl_print_dir(struct ctl_dir *dir) +{ + if (dir->header.parent) + sysctl_print_dir(dir->header.parent); + printk(KERN_CONT "%s/", dir->header.ctl_table[0].procname); +} + +static int namecmp(const char *name1, int len1, const char *name2, int len2) +{ + int minlen; + int cmp; + + minlen = len1; + if (minlen > len2) + minlen = len2; + + cmp = memcmp(name1, name2, minlen); + if (cmp == 0) + cmp = len1 - len2; + return cmp; +} + +/* Called under sysctl_lock */ +static struct ctl_table *find_entry(struct ctl_table_header **phead, + struct ctl_dir *dir, const char *name, int namelen) +{ + struct ctl_table_header *head; + struct ctl_table *entry; + struct rb_node *node = dir->root.rb_node; + + while (node) + { + struct ctl_node *ctl_node; + const char *procname; + int cmp; + + ctl_node = rb_entry(node, struct ctl_node, node); + head = ctl_node->header; + entry = &head->ctl_table[ctl_node - head->node]; + procname = entry->procname; + + cmp = namecmp(name, namelen, procname, strlen(procname)); + if (cmp < 0) + node = node->rb_left; + else if (cmp > 0) + node = node->rb_right; + else { + *phead = head; + return entry; + } + } + return NULL; +} + +static int insert_entry(struct ctl_table_header *head, struct ctl_table *entry) +{ + struct rb_node *node = &head->node[entry - head->ctl_table].node; + struct rb_node **p = &head->parent->root.rb_node; + struct rb_node *parent = NULL; + const char *name = entry->procname; + int namelen = strlen(name); + + while (*p) { + struct ctl_table_header *parent_head; + struct ctl_table *parent_entry; + struct ctl_node *parent_node; + const char *parent_name; + int cmp; + + parent = *p; + parent_node = rb_entry(parent, struct ctl_node, node); + parent_head = parent_node->header; + parent_entry = &parent_head->ctl_table[parent_node - parent_head->node]; + parent_name = parent_entry->procname; + + cmp = namecmp(name, namelen, parent_name, strlen(parent_name)); + if (cmp < 0) + p = &(*p)->rb_left; + else if (cmp > 0) + p = &(*p)->rb_right; + else { + printk(KERN_ERR "sysctl duplicate entry: "); + sysctl_print_dir(head->parent); + printk(KERN_CONT "/%s\n", entry->procname); + return -EEXIST; + } + } + + rb_link_node(node, parent, p); + return 0; +} + +static void erase_entry(struct ctl_table_header *head, struct ctl_table *entry) +{ + struct rb_node *node = &head->node[entry - head->ctl_table].node; + + rb_erase(node, &head->parent->root); +} + +static void init_header(struct ctl_table_header *head, + struct ctl_table_root *root, struct ctl_table_set *set, + struct ctl_node *node, struct ctl_table *table) +{ + head->ctl_table = table; + head->ctl_table_arg = table; + head->used = 0; + head->count = 1; + head->nreg = 1; + head->unregistering = NULL; + head->root = root; + head->set = set; + head->parent = NULL; + head->node = node; + if (node) { + struct ctl_table *entry; + for (entry = table; entry->procname; entry++, node++) { + rb_init_node(&node->node); + node->header = head; + } + } +} + +static void erase_header(struct ctl_table_header *head) +{ + struct ctl_table *entry; + for (entry = head->ctl_table; entry->procname; entry++) + erase_entry(head, entry); +} + +static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header) +{ + struct ctl_table *entry; + int err; + + dir->header.nreg++; + header->parent = dir; + err = insert_links(header); + if (err) + goto fail_links; + for (entry = header->ctl_table; entry->procname; entry++) { + err = insert_entry(header, entry); + if (err) + goto fail; + } + return 0; +fail: + erase_header(header); + put_links(header); +fail_links: + header->parent = NULL; + drop_sysctl_table(&dir->header); + return err; +} + +/* called under sysctl_lock */ +static int use_table(struct ctl_table_header *p) +{ + if (unlikely(p->unregistering)) + return 0; + p->used++; + return 1; +} + +/* called under sysctl_lock */ +static void unuse_table(struct ctl_table_header *p) +{ + if (!--p->used) + if (unlikely(p->unregistering)) + complete(p->unregistering); +} + +/* called under sysctl_lock, will reacquire if has to wait */ +static void start_unregistering(struct ctl_table_header *p) +{ + /* + * if p->used is 0, nobody will ever touch that entry again; + * we'll eliminate all paths to it before dropping sysctl_lock + */ + if (unlikely(p->used)) { + struct completion wait; + init_completion(&wait); + p->unregistering = &wait; + spin_unlock(&sysctl_lock); + wait_for_completion(&wait); + spin_lock(&sysctl_lock); + } else { + /* anything non-NULL; we'll never dereference it */ + p->unregistering = ERR_PTR(-EINVAL); + } + /* + * do not remove from the list until nobody holds it; walking the + * list in do_sysctl() relies on that. + */ + erase_header(p); +} + +static void sysctl_head_get(struct ctl_table_header *head) +{ + spin_lock(&sysctl_lock); + head->count++; + spin_unlock(&sysctl_lock); +} + +void sysctl_head_put(struct ctl_table_header *head) +{ + spin_lock(&sysctl_lock); + if (!--head->count) + kfree_rcu(head, rcu); + spin_unlock(&sysctl_lock); +} + +static struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *head) +{ + if (!head) + BUG(); + spin_lock(&sysctl_lock); + if (!use_table(head)) + head = ERR_PTR(-ENOENT); + spin_unlock(&sysctl_lock); + return head; +} + +static void sysctl_head_finish(struct ctl_table_header *head) +{ + if (!head) + return; + spin_lock(&sysctl_lock); + unuse_table(head); + spin_unlock(&sysctl_lock); +} + +static struct ctl_table_set * +lookup_header_set(struct ctl_table_root *root, struct nsproxy *namespaces) +{ + struct ctl_table_set *set = &root->default_set; + if (root->lookup) + set = root->lookup(root, namespaces); + return set; +} + +static struct ctl_table *lookup_entry(struct ctl_table_header **phead, + struct ctl_dir *dir, + const char *name, int namelen) +{ + struct ctl_table_header *head; + struct ctl_table *entry; + + spin_lock(&sysctl_lock); + entry = find_entry(&head, dir, name, namelen); + if (entry && use_table(head)) + *phead = head; + else + entry = NULL; + spin_unlock(&sysctl_lock); + return entry; +} + +static struct ctl_node *first_usable_entry(struct rb_node *node) +{ + struct ctl_node *ctl_node; + + for (;node; node = rb_next(node)) { + ctl_node = rb_entry(node, struct ctl_node, node); + if (use_table(ctl_node->header)) + return ctl_node; + } + return NULL; +} + +static void first_entry(struct ctl_dir *dir, + struct ctl_table_header **phead, struct ctl_table **pentry) +{ + struct ctl_table_header *head = NULL; + struct ctl_table *entry = NULL; + struct ctl_node *ctl_node; + + spin_lock(&sysctl_lock); + ctl_node = first_usable_entry(rb_first(&dir->root)); + spin_unlock(&sysctl_lock); + if (ctl_node) { + head = ctl_node->header; + entry = &head->ctl_table[ctl_node - head->node]; + } + *phead = head; + *pentry = entry; +} + +static void next_entry(struct ctl_table_header **phead, struct ctl_table **pentry) +{ + struct ctl_table_header *head = *phead; + struct ctl_table *entry = *pentry; + struct ctl_node *ctl_node = &head->node[entry - head->ctl_table]; + + spin_lock(&sysctl_lock); + unuse_table(head); + + ctl_node = first_usable_entry(rb_next(&ctl_node->node)); + spin_unlock(&sysctl_lock); + head = NULL; + if (ctl_node) { + head = ctl_node->header; + entry = &head->ctl_table[ctl_node - head->node]; + } + *phead = head; + *pentry = entry; +} + +void register_sysctl_root(struct ctl_table_root *root) +{ +} + +/* + * sysctl_perm does NOT grant the superuser all rights automatically, because + * some sysctl variables are readonly even to root. + */ + +static int test_perm(int mode, int op) +{ + if (!current_euid()) + mode >>= 6; + else if (in_egroup_p(0)) + mode >>= 3; + if ((op & ~mode & (MAY_READ|MAY_WRITE|MAY_EXEC)) == 0) + return 0; + return -EACCES; +} + +static int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op) +{ + int mode; + + if (root->permissions) + mode = root->permissions(root, current->nsproxy, table); + else + mode = table->mode; + + return test_perm(mode, op); +} + static struct inode *proc_sys_make_inode(struct super_block *sb, struct ctl_table_header *head, struct ctl_table *table) { @@ -43,13 +411,12 @@ static struct inode *proc_sys_make_inode(struct super_block *sb, inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_mode = table->mode; - if (!table->child) { + if (!S_ISDIR(table->mode)) { inode->i_mode |= S_IFREG; inode->i_op = &proc_sys_inode_operations; inode->i_fop = &proc_sys_file_operations; } else { inode->i_mode |= S_IFDIR; - clear_nlink(inode); inode->i_op = &proc_sys_dir_operations; inode->i_fop = &proc_sys_dir_file_operations; } @@ -57,70 +424,42 @@ out: return inode; } -static struct ctl_table *find_in_table(struct ctl_table *p, struct qstr *name) -{ - int len; - for ( ; p->procname; p++) { - - if (!p->procname) - continue; - - len = strlen(p->procname); - if (len != name->len) - continue; - - if (memcmp(p->procname, name->name, len) != 0) - continue; - - /* I have a match */ - return p; - } - return NULL; -} - static struct ctl_table_header *grab_header(struct inode *inode) { - if (PROC_I(inode)->sysctl) - return sysctl_head_grab(PROC_I(inode)->sysctl); - else - return sysctl_head_next(NULL); + struct ctl_table_header *head = PROC_I(inode)->sysctl; + if (!head) + head = &sysctl_table_root.default_set.dir.header; + return sysctl_head_grab(head); } static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) { struct ctl_table_header *head = grab_header(dir); - struct ctl_table *table = PROC_I(dir)->sysctl_entry; struct ctl_table_header *h = NULL; struct qstr *name = &dentry->d_name; struct ctl_table *p; struct inode *inode; struct dentry *err = ERR_PTR(-ENOENT); + struct ctl_dir *ctl_dir; + int ret; if (IS_ERR(head)) return ERR_CAST(head); - if (table && !table->child) { - WARN_ON(1); - goto out; - } - - table = table ? table->child : head->ctl_table; - - p = find_in_table(table, name); - if (!p) { - for (h = sysctl_head_next(NULL); h; h = sysctl_head_next(h)) { - if (h->attached_to != table) - continue; - p = find_in_table(h->attached_by, name); - if (p) - break; - } - } + ctl_dir = container_of(head, struct ctl_dir, header); + p = lookup_entry(&h, ctl_dir, name->name, name->len); if (!p) goto out; + if (S_ISLNK(p->mode)) { + ret = sysctl_follow_link(&h, &p, current->nsproxy); + err = ERR_PTR(ret); + if (ret) + goto out; + } + err = ERR_PTR(-ENOMEM); inode = proc_sys_make_inode(dir->i_sb, h ? h : head, p); if (h) @@ -188,20 +527,32 @@ static ssize_t proc_sys_write(struct file *filp, const char __user *buf, static int proc_sys_open(struct inode *inode, struct file *filp) { + struct ctl_table_header *head = grab_header(inode); struct ctl_table *table = PROC_I(inode)->sysctl_entry; + /* sysctl was unregistered */ + if (IS_ERR(head)) + return PTR_ERR(head); + if (table->poll) filp->private_data = proc_sys_poll_event(table->poll); + sysctl_head_finish(head); + return 0; } static unsigned int proc_sys_poll(struct file *filp, poll_table *wait) { struct inode *inode = filp->f_path.dentry->d_inode; + struct ctl_table_header *head = grab_header(inode); struct ctl_table *table = PROC_I(inode)->sysctl_entry; - unsigned long event = (unsigned long)filp->private_data; unsigned int ret = DEFAULT_POLLMASK; + unsigned long event; + + /* sysctl was unregistered */ + if (IS_ERR(head)) + return POLLERR | POLLHUP; if (!table->proc_handler) goto out; @@ -209,6 +560,7 @@ static unsigned int proc_sys_poll(struct file *filp, poll_table *wait) if (!table->poll) goto out; + event = (unsigned long)filp->private_data; poll_wait(filp, &table->poll->wait, wait); if (event != atomic_read(&table->poll->event)) { @@ -217,6 +569,8 @@ static unsigned int proc_sys_poll(struct file *filp, poll_table *wait) } out: + sysctl_head_finish(head); + return ret; } @@ -258,28 +612,45 @@ static int proc_sys_fill_cache(struct file *filp, void *dirent, return !!filldir(dirent, qname.name, qname.len, filp->f_pos, ino, type); } +static int proc_sys_link_fill_cache(struct file *filp, void *dirent, + filldir_t filldir, + struct ctl_table_header *head, + struct ctl_table *table) +{ + int err, ret = 0; + head = sysctl_head_grab(head); + + if (S_ISLNK(table->mode)) { + /* It is not an error if we can not follow the link ignore it */ + err = sysctl_follow_link(&head, &table, current->nsproxy); + if (err) + goto out; + } + + ret = proc_sys_fill_cache(filp, dirent, filldir, head, table); +out: + sysctl_head_finish(head); + return ret; +} + static int scan(struct ctl_table_header *head, ctl_table *table, unsigned long *pos, struct file *file, void *dirent, filldir_t filldir) { + int res; - for (; table->procname; table++, (*pos)++) { - int res; - - /* Can't do anything without a proc name */ - if (!table->procname) - continue; - - if (*pos < file->f_pos) - continue; + if ((*pos)++ < file->f_pos) + return 0; + if (unlikely(S_ISLNK(table->mode))) + res = proc_sys_link_fill_cache(file, dirent, filldir, head, table); + else res = proc_sys_fill_cache(file, dirent, filldir, head, table); - if (res) - return res; - file->f_pos = *pos + 1; - } - return 0; + if (res == 0) + file->f_pos = *pos; + + return res; } static int proc_sys_readdir(struct file *filp, void *dirent, filldir_t filldir) @@ -287,20 +658,16 @@ static int proc_sys_readdir(struct file *filp, void *dirent, filldir_t filldir) struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; struct ctl_table_header *head = grab_header(inode); - struct ctl_table *table = PROC_I(inode)->sysctl_entry; struct ctl_table_header *h = NULL; + struct ctl_table *entry; + struct ctl_dir *ctl_dir; unsigned long pos; int ret = -EINVAL; if (IS_ERR(head)) return PTR_ERR(head); - if (table && !table->child) { - WARN_ON(1); - goto out; - } - - table = table ? table->child : head->ctl_table; + ctl_dir = container_of(head, struct ctl_dir, header); ret = 0; /* Avoid a switch here: arm builds fail with missing __cmpdi2 */ @@ -318,14 +685,8 @@ static int proc_sys_readdir(struct file *filp, void *dirent, filldir_t filldir) } pos = 2; - ret = scan(head, table, &pos, filp, dirent, filldir); - if (ret) - goto out; - - for (h = sysctl_head_next(NULL); h; h = sysctl_head_next(h)) { - if (h->attached_to != table) - continue; - ret = scan(h, h->attached_by, &pos, filp, dirent, filldir); + for (first_entry(ctl_dir, &h, &entry); h; next_entry(&h, &entry)) { + ret = scan(h, entry, &pos, filp, dirent, filldir); if (ret) { sysctl_head_finish(h); break; @@ -445,6 +806,21 @@ static int proc_sys_delete(const struct dentry *dentry) return !!PROC_I(dentry->d_inode)->sysctl->unregistering; } +static int sysctl_is_seen(struct ctl_table_header *p) +{ + struct ctl_table_set *set = p->set; + int res; + spin_lock(&sysctl_lock); + if (p->unregistering) + res = 0; + else if (!set->is_seen) + res = 1; + else + res = set->is_seen(set); + spin_unlock(&sysctl_lock); + return res; +} + static int proc_sys_compare(const struct dentry *parent, const struct inode *pinode, const struct dentry *dentry, const struct inode *inode, @@ -470,6 +846,753 @@ static const struct dentry_operations proc_sys_dentry_operations = { .d_compare = proc_sys_compare, }; +static struct ctl_dir *find_subdir(struct ctl_dir *dir, + const char *name, int namelen) +{ + struct ctl_table_header *head; + struct ctl_table *entry; + + entry = find_entry(&head, dir, name, namelen); + if (!entry) + return ERR_PTR(-ENOENT); + if (!S_ISDIR(entry->mode)) + return ERR_PTR(-ENOTDIR); + return container_of(head, struct ctl_dir, header); +} + +static struct ctl_dir *new_dir(struct ctl_table_set *set, + const char *name, int namelen) +{ + struct ctl_table *table; + struct ctl_dir *new; + struct ctl_node *node; + char *new_name; + + new = kzalloc(sizeof(*new) + sizeof(struct ctl_node) + + sizeof(struct ctl_table)*2 + namelen + 1, + GFP_KERNEL); + if (!new) + return NULL; + + node = (struct ctl_node *)(new + 1); + table = (struct ctl_table *)(node + 1); + new_name = (char *)(table + 2); + memcpy(new_name, name, namelen); + new_name[namelen] = '\0'; + table[0].procname = new_name; + table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO; + init_header(&new->header, set->dir.header.root, set, node, table); + + return new; +} + +/** + * get_subdir - find or create a subdir with the specified name. + * @dir: Directory to create the subdirectory in + * @name: The name of the subdirectory to find or create + * @namelen: The length of name + * + * Takes a directory with an elevated reference count so we know that + * if we drop the lock the directory will not go away. Upon success + * the reference is moved from @dir to the returned subdirectory. + * Upon error an error code is returned and the reference on @dir is + * simply dropped. + */ +static struct ctl_dir *get_subdir(struct ctl_dir *dir, + const char *name, int namelen) +{ + struct ctl_table_set *set = dir->header.set; + struct ctl_dir *subdir, *new = NULL; + int err; + + spin_lock(&sysctl_lock); + subdir = find_subdir(dir, name, namelen); + if (!IS_ERR(subdir)) + goto found; + if (PTR_ERR(subdir) != -ENOENT) + goto failed; + + spin_unlock(&sysctl_lock); + new = new_dir(set, name, namelen); + spin_lock(&sysctl_lock); + subdir = ERR_PTR(-ENOMEM); + if (!new) + goto failed; + + /* Was the subdir added while we dropped the lock? */ + subdir = find_subdir(dir, name, namelen); + if (!IS_ERR(subdir)) + goto found; + if (PTR_ERR(subdir) != -ENOENT) + goto failed; + + /* Nope. Use the our freshly made directory entry. */ + err = insert_header(dir, &new->header); + subdir = ERR_PTR(err); + if (err) + goto failed; + subdir = new; +found: + subdir->header.nreg++; +failed: + if (unlikely(IS_ERR(subdir))) { + printk(KERN_ERR "sysctl could not get directory: "); + sysctl_print_dir(dir); + printk(KERN_CONT "/%*.*s %ld\n", + namelen, namelen, name, PTR_ERR(subdir)); + } + drop_sysctl_table(&dir->header); + if (new) + drop_sysctl_table(&new->header); + spin_unlock(&sysctl_lock); + return subdir; +} + +static struct ctl_dir *xlate_dir(struct ctl_table_set *set, struct ctl_dir *dir) +{ + struct ctl_dir *parent; + const char *procname; + if (!dir->header.parent) + return &set->dir; + parent = xlate_dir(set, dir->header.parent); + if (IS_ERR(parent)) + return parent; + procname = dir->header.ctl_table[0].procname; + return find_subdir(parent, procname, strlen(procname)); +} + +static int sysctl_follow_link(struct ctl_table_header **phead, + struct ctl_table **pentry, struct nsproxy *namespaces) +{ + struct ctl_table_header *head; + struct ctl_table_root *root; + struct ctl_table_set *set; + struct ctl_table *entry; + struct ctl_dir *dir; + int ret; + + ret = 0; + spin_lock(&sysctl_lock); + root = (*pentry)->data; + set = lookup_header_set(root, namespaces); + dir = xlate_dir(set, (*phead)->parent); + if (IS_ERR(dir)) + ret = PTR_ERR(dir); + else { + const char *procname = (*pentry)->procname; + head = NULL; + entry = find_entry(&head, dir, procname, strlen(procname)); + ret = -ENOENT; + if (entry && use_table(head)) { + unuse_table(*phead); + *phead = head; + *pentry = entry; + ret = 0; + } + } + + spin_unlock(&sysctl_lock); + return ret; +} + +static int sysctl_err(const char *path, struct ctl_table *table, char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + + printk(KERN_ERR "sysctl table check failed: %s/%s %pV\n", + path, table->procname, &vaf); + + va_end(args); + return -EINVAL; +} + +static int sysctl_check_table(const char *path, struct ctl_table *table) +{ + int err = 0; + for (; table->procname; table++) { + if (table->child) + err = sysctl_err(path, table, "Not a file"); + + if ((table->proc_handler == proc_dostring) || + (table->proc_handler == proc_dointvec) || + (table->proc_handler == proc_dointvec_minmax) || + (table->proc_handler == proc_dointvec_jiffies) || + (table->proc_handler == proc_dointvec_userhz_jiffies) || + (table->proc_handler == proc_dointvec_ms_jiffies) || + (table->proc_handler == proc_doulongvec_minmax) || + (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) { + if (!table->data) + err = sysctl_err(path, table, "No data"); + if (!table->maxlen) + err = sysctl_err(path, table, "No maxlen"); + } + if (!table->proc_handler) + err = sysctl_err(path, table, "No proc_handler"); + + if ((table->mode & (S_IRUGO|S_IWUGO)) != table->mode) + err = sysctl_err(path, table, "bogus .mode 0%o", + table->mode); + } + return err; +} + +static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table, + struct ctl_table_root *link_root) +{ + struct ctl_table *link_table, *entry, *link; + struct ctl_table_header *links; + struct ctl_node *node; + char *link_name; + int nr_entries, name_bytes; + + name_bytes = 0; + nr_entries = 0; + for (entry = table; entry->procname; entry++) { + nr_entries++; + name_bytes += strlen(entry->procname) + 1; + } + + links = kzalloc(sizeof(struct ctl_table_header) + + sizeof(struct ctl_node)*nr_entries + + sizeof(struct ctl_table)*(nr_entries + 1) + + name_bytes, + GFP_KERNEL); + + if (!links) + return NULL; + + node = (struct ctl_node *)(links + 1); + link_table = (struct ctl_table *)(node + nr_entries); + link_name = (char *)&link_table[nr_entries + 1]; + + for (link = link_table, entry = table; entry->procname; link++, entry++) { + int len = strlen(entry->procname) + 1; + memcpy(link_name, entry->procname, len); + link->procname = link_name; + link->mode = S_IFLNK|S_IRWXUGO; + link->data = link_root; + link_name += len; + } + init_header(links, dir->header.root, dir->header.set, node, link_table); + links->nreg = nr_entries; + + return links; +} + +static bool get_links(struct ctl_dir *dir, + struct ctl_table *table, struct ctl_table_root *link_root) +{ + struct ctl_table_header *head; + struct ctl_table *entry, *link; + + /* Are there links available for every entry in table? */ + for (entry = table; entry->procname; entry++) { + const char *procname = entry->procname; + link = find_entry(&head, dir, procname, strlen(procname)); + if (!link) + return false; + if (S_ISDIR(link->mode) && S_ISDIR(entry->mode)) + continue; + if (S_ISLNK(link->mode) && (link->data == link_root)) + continue; + return false; + } + + /* The checks passed. Increase the registration count on the links */ + for (entry = table; entry->procname; entry++) { + const char *procname = entry->procname; + link = find_entry(&head, dir, procname, strlen(procname)); + head->nreg++; + } + return true; +} + +static int insert_links(struct ctl_table_header *head) +{ + struct ctl_table_set *root_set = &sysctl_table_root.default_set; + struct ctl_dir *core_parent = NULL; + struct ctl_table_header *links; + int err; + + if (head->set == root_set) + return 0; + + core_parent = xlate_dir(root_set, head->parent); + if (IS_ERR(core_parent)) + return 0; + + if (get_links(core_parent, head->ctl_table, head->root)) + return 0; + + core_parent->header.nreg++; + spin_unlock(&sysctl_lock); + + links = new_links(core_parent, head->ctl_table, head->root); + + spin_lock(&sysctl_lock); + err = -ENOMEM; + if (!links) + goto out; + + err = 0; + if (get_links(core_parent, head->ctl_table, head->root)) { + kfree(links); + goto out; + } + + err = insert_header(core_parent, links); + if (err) + kfree(links); +out: + drop_sysctl_table(&core_parent->header); + return err; +} + +/** + * __register_sysctl_table - register a leaf sysctl table + * @set: Sysctl tree to register on + * @path: The path to the directory the sysctl table is in. + * @table: the top-level table structure + * + * Register a sysctl table hierarchy. @table should be a filled in ctl_table + * array. A completely 0 filled entry terminates the table. + * + * The members of the &struct ctl_table structure are used as follows: + * + * procname - the name of the sysctl file under /proc/sys. Set to %NULL to not + * enter a sysctl file + * + * data - a pointer to data for use by proc_handler + * + * maxlen - the maximum size in bytes of the data + * + * mode - the file permissions for the /proc/sys file + * + * child - must be %NULL. + * + * proc_handler - the text handler routine (described below) + * + * extra1, extra2 - extra pointers usable by the proc handler routines + * + * Leaf nodes in the sysctl tree will be represented by a single file + * under /proc; non-leaf nodes will be represented by directories. + * + * There must be a proc_handler routine for any terminal nodes. + * Several default handlers are available to cover common cases - + * + * proc_dostring(), proc_dointvec(), proc_dointvec_jiffies(), + * proc_dointvec_userhz_jiffies(), proc_dointvec_minmax(), + * proc_doulongvec_ms_jiffies_minmax(), proc_doulongvec_minmax() + * + * It is the handler's job to read the input buffer from user memory + * and process it. The handler should return 0 on success. + * + * This routine returns %NULL on a failure to register, and a pointer + * to the table header on success. + */ +struct ctl_table_header *__register_sysctl_table( + struct ctl_table_set *set, + const char *path, struct ctl_table *table) +{ + struct ctl_table_root *root = set->dir.header.root; + struct ctl_table_header *header; + const char *name, *nextname; + struct ctl_dir *dir; + struct ctl_table *entry; + struct ctl_node *node; + int nr_entries = 0; + + for (entry = table; entry->procname; entry++) + nr_entries++; + + header = kzalloc(sizeof(struct ctl_table_header) + + sizeof(struct ctl_node)*nr_entries, GFP_KERNEL); + if (!header) + return NULL; + + node = (struct ctl_node *)(header + 1); + init_header(header, root, set, node, table); + if (sysctl_check_table(path, table)) + goto fail; + + spin_lock(&sysctl_lock); + dir = &set->dir; + /* Reference moved down the diretory tree get_subdir */ + dir->header.nreg++; + spin_unlock(&sysctl_lock); + + /* Find the directory for the ctl_table */ + for (name = path; name; name = nextname) { + int namelen; + nextname = strchr(name, '/'); + if (nextname) { + namelen = nextname - name; + nextname++; + } else { + namelen = strlen(name); + } + if (namelen == 0) + continue; + + dir = get_subdir(dir, name, namelen); + if (IS_ERR(dir)) + goto fail; + } + + spin_lock(&sysctl_lock); + if (insert_header(dir, header)) + goto fail_put_dir_locked; + + drop_sysctl_table(&dir->header); + spin_unlock(&sysctl_lock); + + return header; + +fail_put_dir_locked: + drop_sysctl_table(&dir->header); + spin_unlock(&sysctl_lock); +fail: + kfree(header); + dump_stack(); + return NULL; +} + +/** + * register_sysctl - register a sysctl table + * @path: The path to the directory the sysctl table is in. + * @table: the table structure + * + * Register a sysctl table. @table should be a filled in ctl_table + * array. A completely 0 filled entry terminates the table. + * + * See __register_sysctl_table for more details. + */ +struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table) +{ + return __register_sysctl_table(&sysctl_table_root.default_set, + path, table); +} +EXPORT_SYMBOL(register_sysctl); + +static char *append_path(const char *path, char *pos, const char *name) +{ + int namelen; + namelen = strlen(name); + if (((pos - path) + namelen + 2) >= PATH_MAX) + return NULL; + memcpy(pos, name, namelen); + pos[namelen] = '/'; + pos[namelen + 1] = '\0'; + pos += namelen + 1; + return pos; +} + +static int count_subheaders(struct ctl_table *table) +{ + int has_files = 0; + int nr_subheaders = 0; + struct ctl_table *entry; + + /* special case: no directory and empty directory */ + if (!table || !table->procname) + return 1; + + for (entry = table; entry->procname; entry++) { + if (entry->child) + nr_subheaders += count_subheaders(entry->child); + else + has_files = 1; + } + return nr_subheaders + has_files; +} + +static int register_leaf_sysctl_tables(const char *path, char *pos, + struct ctl_table_header ***subheader, struct ctl_table_set *set, + struct ctl_table *table) +{ + struct ctl_table *ctl_table_arg = NULL; + struct ctl_table *entry, *files; + int nr_files = 0; + int nr_dirs = 0; + int err = -ENOMEM; + + for (entry = table; entry->procname; entry++) { + if (entry->child) + nr_dirs++; + else + nr_files++; + } + + files = table; + /* If there are mixed files and directories we need a new table */ + if (nr_dirs && nr_files) { + struct ctl_table *new; + files = kzalloc(sizeof(struct ctl_table) * (nr_files + 1), + GFP_KERNEL); + if (!files) + goto out; + + ctl_table_arg = files; + for (new = files, entry = table; entry->procname; entry++) { + if (entry->child) + continue; + *new = *entry; + new++; + } + } + + /* Register everything except a directory full of subdirectories */ + if (nr_files || !nr_dirs) { + struct ctl_table_header *header; + header = __register_sysctl_table(set, path, files); + if (!header) { + kfree(ctl_table_arg); + goto out; + } + + /* Remember if we need to free the file table */ + header->ctl_table_arg = ctl_table_arg; + **subheader = header; + (*subheader)++; + } + + /* Recurse into the subdirectories. */ + for (entry = table; entry->procname; entry++) { + char *child_pos; + + if (!entry->child) + continue; + + err = -ENAMETOOLONG; + child_pos = append_path(path, pos, entry->procname); + if (!child_pos) + goto out; + + err = register_leaf_sysctl_tables(path, child_pos, subheader, + set, entry->child); + pos[0] = '\0'; + if (err) + goto out; + } + err = 0; +out: + /* On failure our caller will unregister all registered subheaders */ + return err; +} + +/** + * __register_sysctl_paths - register a sysctl table hierarchy + * @set: Sysctl tree to register on + * @path: The path to the directory the sysctl table is in. + * @table: the top-level table structure + * + * Register a sysctl table hierarchy. @table should be a filled in ctl_table + * array. A completely 0 filled entry terminates the table. + * + * See __register_sysctl_table for more details. + */ +struct ctl_table_header *__register_sysctl_paths( + struct ctl_table_set *set, + const struct ctl_path *path, struct ctl_table *table) +{ + struct ctl_table *ctl_table_arg = table; + int nr_subheaders = count_subheaders(table); + struct ctl_table_header *header = NULL, **subheaders, **subheader; + const struct ctl_path *component; + char *new_path, *pos; + + pos = new_path = kmalloc(PATH_MAX, GFP_KERNEL); + if (!new_path) + return NULL; + + pos[0] = '\0'; + for (component = path; component->procname; component++) { + pos = append_path(new_path, pos, component->procname); + if (!pos) + goto out; + } + while (table->procname && table->child && !table[1].procname) { + pos = append_path(new_path, pos, table->procname); + if (!pos) + goto out; + table = table->child; + } + if (nr_subheaders == 1) { + header = __register_sysctl_table(set, new_path, table); + if (header) + header->ctl_table_arg = ctl_table_arg; + } else { + header = kzalloc(sizeof(*header) + + sizeof(*subheaders)*nr_subheaders, GFP_KERNEL); + if (!header) + goto out; + + subheaders = (struct ctl_table_header **) (header + 1); + subheader = subheaders; + header->ctl_table_arg = ctl_table_arg; + + if (register_leaf_sysctl_tables(new_path, pos, &subheader, + set, table)) + goto err_register_leaves; + } + +out: + kfree(new_path); + return header; + +err_register_leaves: + while (subheader > subheaders) { + struct ctl_table_header *subh = *(--subheader); + struct ctl_table *table = subh->ctl_table_arg; + unregister_sysctl_table(subh); + kfree(table); + } + kfree(header); + header = NULL; + goto out; +} + +/** + * register_sysctl_table_path - register a sysctl table hierarchy + * @path: The path to the directory the sysctl table is in. + * @table: the top-level table structure + * + * Register a sysctl table hierarchy. @table should be a filled in ctl_table + * array. A completely 0 filled entry terminates the table. + * + * See __register_sysctl_paths for more details. + */ +struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, + struct ctl_table *table) +{ + return __register_sysctl_paths(&sysctl_table_root.default_set, + path, table); +} +EXPORT_SYMBOL(register_sysctl_paths); + +/** + * register_sysctl_table - register a sysctl table hierarchy + * @table: the top-level table structure + * + * Register a sysctl table hierarchy. @table should be a filled in ctl_table + * array. A completely 0 filled entry terminates the table. + * + * See register_sysctl_paths for more details. + */ +struct ctl_table_header *register_sysctl_table(struct ctl_table *table) +{ + static const struct ctl_path null_path[] = { {} }; + + return register_sysctl_paths(null_path, table); +} +EXPORT_SYMBOL(register_sysctl_table); + +static void put_links(struct ctl_table_header *header) +{ + struct ctl_table_set *root_set = &sysctl_table_root.default_set; + struct ctl_table_root *root = header->root; + struct ctl_dir *parent = header->parent; + struct ctl_dir *core_parent; + struct ctl_table *entry; + + if (header->set == root_set) + return; + + core_parent = xlate_dir(root_set, parent); + if (IS_ERR(core_parent)) + return; + + for (entry = header->ctl_table; entry->procname; entry++) { + struct ctl_table_header *link_head; + struct ctl_table *link; + const char *name = entry->procname; + + link = find_entry(&link_head, core_parent, name, strlen(name)); + if (link && + ((S_ISDIR(link->mode) && S_ISDIR(entry->mode)) || + (S_ISLNK(link->mode) && (link->data == root)))) { + drop_sysctl_table(link_head); + } + else { + printk(KERN_ERR "sysctl link missing during unregister: "); + sysctl_print_dir(parent); + printk(KERN_CONT "/%s\n", name); + } + } +} + +static void drop_sysctl_table(struct ctl_table_header *header) +{ + struct ctl_dir *parent = header->parent; + + if (--header->nreg) + return; + + put_links(header); + start_unregistering(header); + if (!--header->count) + kfree_rcu(header, rcu); + + if (parent) + drop_sysctl_table(&parent->header); +} + +/** + * unregister_sysctl_table - unregister a sysctl table hierarchy + * @header: the header returned from register_sysctl_table + * + * Unregisters the sysctl table and all children. proc entries may not + * actually be removed until they are no longer used by anyone. + */ +void unregister_sysctl_table(struct ctl_table_header * header) +{ + int nr_subheaders; + might_sleep(); + + if (header == NULL) + return; + + nr_subheaders = count_subheaders(header->ctl_table_arg); + if (unlikely(nr_subheaders > 1)) { + struct ctl_table_header **subheaders; + int i; + + subheaders = (struct ctl_table_header **)(header + 1); + for (i = nr_subheaders -1; i >= 0; i--) { + struct ctl_table_header *subh = subheaders[i]; + struct ctl_table *table = subh->ctl_table_arg; + unregister_sysctl_table(subh); + kfree(table); + } + kfree(header); + return; + } + + spin_lock(&sysctl_lock); + drop_sysctl_table(header); + spin_unlock(&sysctl_lock); +} +EXPORT_SYMBOL(unregister_sysctl_table); + +void setup_sysctl_set(struct ctl_table_set *set, + struct ctl_table_root *root, + int (*is_seen)(struct ctl_table_set *)) +{ + memset(set, 0, sizeof(*set)); + set->is_seen = is_seen; + init_header(&set->dir.header, root, set, NULL, root_table); +} + +void retire_sysctl_set(struct ctl_table_set *set) +{ + WARN_ON(!RB_EMPTY_ROOT(&set->dir.root)); +} + int __init proc_sys_init(void) { struct proc_dir_entry *proc_sys_root; @@ -478,5 +1601,6 @@ int __init proc_sys_init(void) proc_sys_root->proc_iops = &proc_sys_dir_operations; proc_sys_root->proc_fops = &proc_sys_dir_file_operations; proc_sys_root->nlink = 0; - return 0; + + return sysctl_init(); } diff --git a/fs/proc/stat.c b/fs/proc/stat.c index 121f77cfef7..6a0c62d6e44 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -89,18 +89,19 @@ static int show_stat(struct seq_file *p, void *v) } sum += arch_irq_stat(); - seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu " - "%llu\n", - (unsigned long long)cputime64_to_clock_t(user), - (unsigned long long)cputime64_to_clock_t(nice), - (unsigned long long)cputime64_to_clock_t(system), - (unsigned long long)cputime64_to_clock_t(idle), - (unsigned long long)cputime64_to_clock_t(iowait), - (unsigned long long)cputime64_to_clock_t(irq), - (unsigned long long)cputime64_to_clock_t(softirq), - (unsigned long long)cputime64_to_clock_t(steal), - (unsigned long long)cputime64_to_clock_t(guest), - (unsigned long long)cputime64_to_clock_t(guest_nice)); + seq_puts(p, "cpu "); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice)); + seq_putc(p, '\n'); + for_each_online_cpu(i) { /* Copy values here to work around gcc-2.95.3, gcc-2.96 */ user = kcpustat_cpu(i).cpustat[CPUTIME_USER]; @@ -113,26 +114,24 @@ static int show_stat(struct seq_file *p, void *v) steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL]; guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST]; guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE]; - seq_printf(p, - "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu " - "%llu\n", - i, - (unsigned long long)cputime64_to_clock_t(user), - (unsigned long long)cputime64_to_clock_t(nice), - (unsigned long long)cputime64_to_clock_t(system), - (unsigned long long)cputime64_to_clock_t(idle), - (unsigned long long)cputime64_to_clock_t(iowait), - (unsigned long long)cputime64_to_clock_t(irq), - (unsigned long long)cputime64_to_clock_t(softirq), - (unsigned long long)cputime64_to_clock_t(steal), - (unsigned long long)cputime64_to_clock_t(guest), - (unsigned long long)cputime64_to_clock_t(guest_nice)); + seq_printf(p, "cpu%d", i); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest)); + seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice)); + seq_putc(p, '\n'); } seq_printf(p, "intr %llu", (unsigned long long)sum); /* sum again ? it could be updated? */ for_each_irq_nr(j) - seq_printf(p, " %u", kstat_irqs(j)); + seq_put_decimal_ull(p, ' ', kstat_irqs(j)); seq_printf(p, "\nctxt %llu\n" @@ -149,7 +148,7 @@ static int show_stat(struct seq_file *p, void *v) seq_printf(p, "softirq %llu", (unsigned long long)sum_softirq); for (i = 0; i < NR_SOFTIRQS; i++) - seq_printf(p, " %u", per_softirq_sums[i]); + seq_put_decimal_ull(p, ' ', per_softirq_sums[i]); seq_putc(p, '\n'); return 0; @@ -157,11 +156,14 @@ static int show_stat(struct seq_file *p, void *v) static int stat_open(struct inode *inode, struct file *file) { - unsigned size = 4096 * (1 + num_possible_cpus() / 32); + unsigned size = 1024 + 128 * num_possible_cpus(); char *buf; struct seq_file *m; int res; + /* minimum size to display an interrupt count : 2 bytes */ + size += 2 * nr_irqs; + /* don't ask for more than the kmalloc() max size */ if (size > KMALLOC_MAX_SIZE) size = KMALLOC_MAX_SIZE; @@ -173,7 +175,7 @@ static int stat_open(struct inode *inode, struct file *file) if (!res) { m = file->private_data; m->buf = buf; - m->size = size; + m->size = ksize(buf); } else kfree(buf); return res; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index e418c5abdb0..9694cc28351 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -209,16 +209,20 @@ static int do_maps_open(struct inode *inode, struct file *file, return ret; } -static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma) +static void +show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) { struct mm_struct *mm = vma->vm_mm; struct file *file = vma->vm_file; + struct proc_maps_private *priv = m->private; + struct task_struct *task = priv->task; vm_flags_t flags = vma->vm_flags; unsigned long ino = 0; unsigned long long pgoff = 0; unsigned long start, end; dev_t dev = 0; int len; + const char *name = NULL; if (file) { struct inode *inode = vma->vm_file->f_path.dentry->d_inode; @@ -252,36 +256,57 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma) if (file) { pad_len_spaces(m, len); seq_path(m, &file->f_path, "\n"); - } else { - const char *name = arch_vma_name(vma); - if (!name) { - if (mm) { - if (vma->vm_start <= mm->brk && - vma->vm_end >= mm->start_brk) { - name = "[heap]"; - } else if (vma->vm_start <= mm->start_stack && - vma->vm_end >= mm->start_stack) { - name = "[stack]"; - } + goto done; + } + + name = arch_vma_name(vma); + if (!name) { + pid_t tid; + + if (!mm) { + name = "[vdso]"; + goto done; + } + + if (vma->vm_start <= mm->brk && + vma->vm_end >= mm->start_brk) { + name = "[heap]"; + goto done; + } + + tid = vm_is_stack(task, vma, is_pid); + + if (tid != 0) { + /* + * Thread stack in /proc/PID/task/TID/maps or + * the main process stack. + */ + if (!is_pid || (vma->vm_start <= mm->start_stack && + vma->vm_end >= mm->start_stack)) { + name = "[stack]"; } else { - name = "[vdso]"; + /* Thread stack in /proc/PID/maps */ + pad_len_spaces(m, len); + seq_printf(m, "[stack:%d]", tid); } } - if (name) { - pad_len_spaces(m, len); - seq_puts(m, name); - } + } + +done: + if (name) { + pad_len_spaces(m, len); + seq_puts(m, name); } seq_putc(m, '\n'); } -static int show_map(struct seq_file *m, void *v) +static int show_map(struct seq_file *m, void *v, int is_pid) { struct vm_area_struct *vma = v; struct proc_maps_private *priv = m->private; struct task_struct *task = priv->task; - show_map_vma(m, vma); + show_map_vma(m, vma, is_pid); if (m->count < m->size) /* vma is copied successfully */ m->version = (vma != get_gate_vma(task->mm)) @@ -289,20 +314,49 @@ static int show_map(struct seq_file *m, void *v) return 0; } +static int show_pid_map(struct seq_file *m, void *v) +{ + return show_map(m, v, 1); +} + +static int show_tid_map(struct seq_file *m, void *v) +{ + return show_map(m, v, 0); +} + static const struct seq_operations proc_pid_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, - .show = show_map + .show = show_pid_map }; -static int maps_open(struct inode *inode, struct file *file) +static const struct seq_operations proc_tid_maps_op = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_tid_map +}; + +static int pid_maps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_pid_maps_op); } -const struct file_operations proc_maps_operations = { - .open = maps_open, +static int tid_maps_open(struct inode *inode, struct file *file) +{ + return do_maps_open(inode, file, &proc_tid_maps_op); +} + +const struct file_operations proc_pid_maps_operations = { + .open = pid_maps_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +const struct file_operations proc_tid_maps_operations = { + .open = tid_maps_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, @@ -394,21 +448,15 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, pte_t *pte; spinlock_t *ptl; - spin_lock(&walk->mm->page_table_lock); - if (pmd_trans_huge(*pmd)) { - if (pmd_trans_splitting(*pmd)) { - spin_unlock(&walk->mm->page_table_lock); - wait_split_huge_page(vma->anon_vma, pmd); - } else { - smaps_pte_entry(*(pte_t *)pmd, addr, - HPAGE_PMD_SIZE, walk); - spin_unlock(&walk->mm->page_table_lock); - mss->anonymous_thp += HPAGE_PMD_SIZE; - return 0; - } - } else { + if (pmd_trans_huge_lock(pmd, vma) == 1) { + smaps_pte_entry(*(pte_t *)pmd, addr, HPAGE_PMD_SIZE, walk); spin_unlock(&walk->mm->page_table_lock); + mss->anonymous_thp += HPAGE_PMD_SIZE; + return 0; } + + if (pmd_trans_unstable(pmd)) + return 0; /* * The mmap_sem held all the way back in m_start() is what * keeps khugepaged out of here and from collapsing things @@ -422,7 +470,7 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, return 0; } -static int show_smap(struct seq_file *m, void *v) +static int show_smap(struct seq_file *m, void *v, int is_pid) { struct proc_maps_private *priv = m->private; struct task_struct *task = priv->task; @@ -440,7 +488,7 @@ static int show_smap(struct seq_file *m, void *v) if (vma->vm_mm && !is_vm_hugetlb_page(vma)) walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk); - show_map_vma(m, vma); + show_map_vma(m, vma, is_pid); seq_printf(m, "Size: %8lu kB\n" @@ -479,20 +527,49 @@ static int show_smap(struct seq_file *m, void *v) return 0; } +static int show_pid_smap(struct seq_file *m, void *v) +{ + return show_smap(m, v, 1); +} + +static int show_tid_smap(struct seq_file *m, void *v) +{ + return show_smap(m, v, 0); +} + static const struct seq_operations proc_pid_smaps_op = { .start = m_start, .next = m_next, .stop = m_stop, - .show = show_smap + .show = show_pid_smap +}; + +static const struct seq_operations proc_tid_smaps_op = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_tid_smap }; -static int smaps_open(struct inode *inode, struct file *file) +static int pid_smaps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_pid_smaps_op); } -const struct file_operations proc_smaps_operations = { - .open = smaps_open, +static int tid_smaps_open(struct inode *inode, struct file *file) +{ + return do_maps_open(inode, file, &proc_tid_smaps_op); +} + +const struct file_operations proc_pid_smaps_operations = { + .open = pid_smaps_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +const struct file_operations proc_tid_smaps_operations = { + .open = tid_smaps_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, @@ -507,6 +584,8 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, struct page *page; split_huge_page_pmd(walk->mm, pmd); + if (pmd_trans_unstable(pmd)) + return 0; pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); for (; addr != end; pte++, addr += PAGE_SIZE) { @@ -518,6 +597,9 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, if (!page) continue; + if (PageReserved(page)) + continue; + /* Clear accessed and referenced bits. */ ptep_test_and_clear_young(vma, addr, pte); ClearPageReferenced(page); @@ -595,11 +677,18 @@ const struct file_operations proc_clear_refs_operations = { .llseek = noop_llseek, }; +typedef struct { + u64 pme; +} pagemap_entry_t; + struct pagemapread { int pos, len; - u64 *buffer; + pagemap_entry_t *buffer; }; +#define PAGEMAP_WALK_SIZE (PMD_SIZE) +#define PAGEMAP_WALK_MASK (PMD_MASK) + #define PM_ENTRY_BYTES sizeof(u64) #define PM_STATUS_BITS 3 #define PM_STATUS_OFFSET (64 - PM_STATUS_BITS) @@ -617,10 +706,15 @@ struct pagemapread { #define PM_NOT_PRESENT PM_PSHIFT(PAGE_SHIFT) #define PM_END_OF_BUFFER 1 -static int add_to_pagemap(unsigned long addr, u64 pfn, +static inline pagemap_entry_t make_pme(u64 val) +{ + return (pagemap_entry_t) { .pme = val }; +} + +static int add_to_pagemap(unsigned long addr, pagemap_entry_t *pme, struct pagemapread *pm) { - pm->buffer[pm->pos++] = pfn; + pm->buffer[pm->pos++] = *pme; if (pm->pos >= pm->len) return PM_END_OF_BUFFER; return 0; @@ -632,8 +726,10 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end, struct pagemapread *pm = walk->private; unsigned long addr; int err = 0; + pagemap_entry_t pme = make_pme(PM_NOT_PRESENT); + for (addr = start; addr < end; addr += PAGE_SIZE) { - err = add_to_pagemap(addr, PM_NOT_PRESENT, pm); + err = add_to_pagemap(addr, &pme, pm); if (err) break; } @@ -646,18 +742,36 @@ static u64 swap_pte_to_pagemap_entry(pte_t pte) return swp_type(e) | (swp_offset(e) << MAX_SWAPFILES_SHIFT); } -static u64 pte_to_pagemap_entry(pte_t pte) +static void pte_to_pagemap_entry(pagemap_entry_t *pme, pte_t pte) { - u64 pme = 0; if (is_swap_pte(pte)) - pme = PM_PFRAME(swap_pte_to_pagemap_entry(pte)) - | PM_PSHIFT(PAGE_SHIFT) | PM_SWAP; + *pme = make_pme(PM_PFRAME(swap_pte_to_pagemap_entry(pte)) + | PM_PSHIFT(PAGE_SHIFT) | PM_SWAP); else if (pte_present(pte)) - pme = PM_PFRAME(pte_pfn(pte)) - | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT; - return pme; + *pme = make_pme(PM_PFRAME(pte_pfn(pte)) + | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, + pmd_t pmd, int offset) +{ + /* + * Currently pmd for thp is always present because thp can not be + * swapped-out, migrated, or HWPOISONed (split in such cases instead.) + * This if-check is just to prepare for future implementation. + */ + if (pmd_present(pmd)) + *pme = make_pme(PM_PFRAME(pmd_pfn(pmd) + offset) + | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); +} +#else +static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, + pmd_t pmd, int offset) +{ +} +#endif + static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { @@ -665,13 +779,30 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct pagemapread *pm = walk->private; pte_t *pte; int err = 0; + pagemap_entry_t pme = make_pme(PM_NOT_PRESENT); - split_huge_page_pmd(walk->mm, pmd); + if (pmd_trans_unstable(pmd)) + return 0; /* find the first VMA at or above 'addr' */ vma = find_vma(walk->mm, addr); + spin_lock(&walk->mm->page_table_lock); + if (pmd_trans_huge_lock(pmd, vma) == 1) { + for (; addr != end; addr += PAGE_SIZE) { + unsigned long offset; + + offset = (addr & ~PAGEMAP_WALK_MASK) >> + PAGE_SHIFT; + thp_pmd_to_pagemap_entry(&pme, *pmd, offset); + err = add_to_pagemap(addr, &pme, pm); + if (err) + break; + } + spin_unlock(&walk->mm->page_table_lock); + return err; + } + for (; addr != end; addr += PAGE_SIZE) { - u64 pfn = PM_NOT_PRESENT; /* check to see if we've left 'vma' behind * and need a new, higher one */ @@ -683,11 +814,11 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, if (vma && (vma->vm_start <= addr) && !is_vm_hugetlb_page(vma)) { pte = pte_offset_map(pmd, addr); - pfn = pte_to_pagemap_entry(*pte); + pte_to_pagemap_entry(&pme, *pte); /* unmap before userspace copy */ pte_unmap(pte); } - err = add_to_pagemap(addr, pfn, pm); + err = add_to_pagemap(addr, &pme, pm); if (err) return err; } @@ -698,13 +829,12 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, } #ifdef CONFIG_HUGETLB_PAGE -static u64 huge_pte_to_pagemap_entry(pte_t pte, int offset) +static void huge_pte_to_pagemap_entry(pagemap_entry_t *pme, + pte_t pte, int offset) { - u64 pme = 0; if (pte_present(pte)) - pme = PM_PFRAME(pte_pfn(pte) + offset) - | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT; - return pme; + *pme = make_pme(PM_PFRAME(pte_pfn(pte) + offset) + | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); } /* This function walks within one hugetlb entry in the single call */ @@ -714,12 +844,12 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask, { struct pagemapread *pm = walk->private; int err = 0; - u64 pfn; + pagemap_entry_t pme = make_pme(PM_NOT_PRESENT); for (; addr != end; addr += PAGE_SIZE) { int offset = (addr & ~hmask) >> PAGE_SHIFT; - pfn = huge_pte_to_pagemap_entry(*pte, offset); - err = add_to_pagemap(addr, pfn, pm); + huge_pte_to_pagemap_entry(&pme, *pte, offset); + err = add_to_pagemap(addr, &pme, pm); if (err) return err; } @@ -754,8 +884,6 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask, * determine which areas of memory are actually mapped and llseek to * skip over unmapped regions. */ -#define PAGEMAP_WALK_SIZE (PMD_SIZE) -#define PAGEMAP_WALK_MASK (PMD_MASK) static ssize_t pagemap_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { @@ -938,26 +1066,21 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr, pte_t *pte; md = walk->private; - spin_lock(&walk->mm->page_table_lock); - if (pmd_trans_huge(*pmd)) { - if (pmd_trans_splitting(*pmd)) { - spin_unlock(&walk->mm->page_table_lock); - wait_split_huge_page(md->vma->anon_vma, pmd); - } else { - pte_t huge_pte = *(pte_t *)pmd; - struct page *page; - page = can_gather_numa_stats(huge_pte, md->vma, addr); - if (page) - gather_stats(page, md, pte_dirty(huge_pte), - HPAGE_PMD_SIZE/PAGE_SIZE); - spin_unlock(&walk->mm->page_table_lock); - return 0; - } - } else { + if (pmd_trans_huge_lock(pmd, md->vma) == 1) { + pte_t huge_pte = *(pte_t *)pmd; + struct page *page; + + page = can_gather_numa_stats(huge_pte, md->vma, addr); + if (page) + gather_stats(page, md, pte_dirty(huge_pte), + HPAGE_PMD_SIZE/PAGE_SIZE); spin_unlock(&walk->mm->page_table_lock); + return 0; } + if (pmd_trans_unstable(pmd)) + return 0; orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); do { struct page *page = can_gather_numa_stats(*pte, md->vma, addr); @@ -999,7 +1122,7 @@ static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, /* * Display pages allocated per node and memory policy via /proc. */ -static int show_numa_map(struct seq_file *m, void *v) +static int show_numa_map(struct seq_file *m, void *v, int is_pid) { struct numa_maps_private *numa_priv = m->private; struct proc_maps_private *proc_priv = &numa_priv->proc_maps; @@ -1036,9 +1159,19 @@ static int show_numa_map(struct seq_file *m, void *v) seq_path(m, &file->f_path, "\n\t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { seq_printf(m, " heap"); - } else if (vma->vm_start <= mm->start_stack && - vma->vm_end >= mm->start_stack) { - seq_printf(m, " stack"); + } else { + pid_t tid = vm_is_stack(proc_priv->task, vma, is_pid); + if (tid != 0) { + /* + * Thread stack in /proc/PID/task/TID/maps or + * the main process stack. + */ + if (!is_pid || (vma->vm_start <= mm->start_stack && + vma->vm_end >= mm->start_stack)) + seq_printf(m, " stack"); + else + seq_printf(m, " stack:%d", tid); + } } if (is_vm_hugetlb_page(vma)) @@ -1081,21 +1214,39 @@ out: return 0; } +static int show_pid_numa_map(struct seq_file *m, void *v) +{ + return show_numa_map(m, v, 1); +} + +static int show_tid_numa_map(struct seq_file *m, void *v) +{ + return show_numa_map(m, v, 0); +} + static const struct seq_operations proc_pid_numa_maps_op = { - .start = m_start, - .next = m_next, - .stop = m_stop, - .show = show_numa_map, + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_pid_numa_map, +}; + +static const struct seq_operations proc_tid_numa_maps_op = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_tid_numa_map, }; -static int numa_maps_open(struct inode *inode, struct file *file) +static int numa_maps_open(struct inode *inode, struct file *file, + const struct seq_operations *ops) { struct numa_maps_private *priv; int ret = -ENOMEM; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (priv) { priv->proc_maps.pid = proc_pid(inode); - ret = seq_open(file, &proc_pid_numa_maps_op); + ret = seq_open(file, ops); if (!ret) { struct seq_file *m = file->private_data; m->private = priv; @@ -1106,8 +1257,25 @@ static int numa_maps_open(struct inode *inode, struct file *file) return ret; } -const struct file_operations proc_numa_maps_operations = { - .open = numa_maps_open, +static int pid_numa_maps_open(struct inode *inode, struct file *file) +{ + return numa_maps_open(inode, file, &proc_pid_numa_maps_op); +} + +static int tid_numa_maps_open(struct inode *inode, struct file *file) +{ + return numa_maps_open(inode, file, &proc_tid_numa_maps_op); +} + +const struct file_operations proc_pid_numa_maps_operations = { + .open = pid_numa_maps_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +const struct file_operations proc_tid_numa_maps_operations = { + .open = tid_numa_maps_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c index 980de547c07..74fe164d1b2 100644 --- a/fs/proc/task_nommu.c +++ b/fs/proc/task_nommu.c @@ -134,9 +134,11 @@ static void pad_len_spaces(struct seq_file *m, int len) /* * display a single VMA to a sequenced file */ -static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) +static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma, + int is_pid) { struct mm_struct *mm = vma->vm_mm; + struct proc_maps_private *priv = m->private; unsigned long ino = 0; struct file *file; dev_t dev = 0; @@ -168,10 +170,19 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) pad_len_spaces(m, len); seq_path(m, &file->f_path, ""); } else if (mm) { - if (vma->vm_start <= mm->start_stack && - vma->vm_end >= mm->start_stack) { + pid_t tid = vm_is_stack(priv->task, vma, is_pid); + + if (tid != 0) { pad_len_spaces(m, len); - seq_puts(m, "[stack]"); + /* + * Thread stack in /proc/PID/task/TID/maps or + * the main process stack. + */ + if (!is_pid || (vma->vm_start <= mm->start_stack && + vma->vm_end >= mm->start_stack)) + seq_printf(m, "[stack]"); + else + seq_printf(m, "[stack:%d]", tid); } } @@ -182,11 +193,22 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) /* * display mapping lines for a particular process's /proc/pid/maps */ -static int show_map(struct seq_file *m, void *_p) +static int show_map(struct seq_file *m, void *_p, int is_pid) { struct rb_node *p = _p; - return nommu_vma_show(m, rb_entry(p, struct vm_area_struct, vm_rb)); + return nommu_vma_show(m, rb_entry(p, struct vm_area_struct, vm_rb), + is_pid); +} + +static int show_pid_map(struct seq_file *m, void *_p) +{ + return show_map(m, _p, 1); +} + +static int show_tid_map(struct seq_file *m, void *_p) +{ + return show_map(m, _p, 0); } static void *m_start(struct seq_file *m, loff_t *pos) @@ -240,10 +262,18 @@ static const struct seq_operations proc_pid_maps_ops = { .start = m_start, .next = m_next, .stop = m_stop, - .show = show_map + .show = show_pid_map +}; + +static const struct seq_operations proc_tid_maps_ops = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_tid_map }; -static int maps_open(struct inode *inode, struct file *file) +static int maps_open(struct inode *inode, struct file *file, + const struct seq_operations *ops) { struct proc_maps_private *priv; int ret = -ENOMEM; @@ -251,7 +281,7 @@ static int maps_open(struct inode *inode, struct file *file) priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (priv) { priv->pid = proc_pid(inode); - ret = seq_open(file, &proc_pid_maps_ops); + ret = seq_open(file, ops); if (!ret) { struct seq_file *m = file->private_data; m->private = priv; @@ -262,8 +292,25 @@ static int maps_open(struct inode *inode, struct file *file) return ret; } -const struct file_operations proc_maps_operations = { - .open = maps_open, +static int pid_maps_open(struct inode *inode, struct file *file) +{ + return maps_open(inode, file, &proc_pid_maps_ops); +} + +static int tid_maps_open(struct inode *inode, struct file *file) +{ + return maps_open(inode, file, &proc_tid_maps_ops); +} + +const struct file_operations proc_pid_maps_operations = { + .open = pid_maps_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +const struct file_operations proc_tid_maps_operations = { + .open = tid_maps_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index b0f450a2bb7..0d5071d2998 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -700,3 +700,26 @@ static int __init vmcore_init(void) return 0; } module_init(vmcore_init) + +/* Cleanup function for vmcore module. */ +void vmcore_cleanup(void) +{ + struct list_head *pos, *next; + + if (proc_vmcore) { + remove_proc_entry(proc_vmcore->name, proc_vmcore->parent); + proc_vmcore = NULL; + } + + /* clear the vmcore list. */ + list_for_each_safe(pos, next, &vmcore_list) { + struct vmcore *m; + + m = list_entry(pos, struct vmcore, list); + list_del(&m->list); + kfree(m); + } + kfree(elfcorebuf); + elfcorebuf = NULL; +} +EXPORT_SYMBOL_GPL(vmcore_cleanup); diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index b3b426edb2f..f37c32b9452 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -278,9 +278,7 @@ fail: int pstore_fill_super(struct super_block *sb, void *data, int silent) { - struct inode *inode = NULL; - struct dentry *root; - int err; + struct inode *inode; save_mount_options(sb, data); @@ -296,26 +294,17 @@ int pstore_fill_super(struct super_block *sb, void *data, int silent) parse_options(data); inode = pstore_get_inode(sb, NULL, S_IFDIR | 0755, 0); - if (!inode) { - err = -ENOMEM; - goto fail; - } - /* override ramfs "dir" options so we catch unlink(2) */ - inode->i_op = &pstore_dir_inode_operations; - - root = d_alloc_root(inode); - sb->s_root = root; - if (!root) { - err = -ENOMEM; - goto fail; + if (inode) { + /* override ramfs "dir" options so we catch unlink(2) */ + inode->i_op = &pstore_dir_inode_operations; } + sb->s_root = d_make_root(inode); + if (!sb->s_root) + return -ENOMEM; pstore_get_records(0); return 0; -fail: - iput(inode); - return err; } static struct dentry *pstore_mount(struct file_system_type *fs_type, diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 9ec22d3b429..82c585f715e 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -68,9 +68,25 @@ void pstore_set_kmsg_bytes(int bytes) /* Tag each group of saved records with a sequence number */ static int oopscount; -static char *reason_str[] = { - "Oops", "Panic", "Kexec", "Restart", "Halt", "Poweroff", "Emergency" -}; +static const char *get_reason_str(enum kmsg_dump_reason reason) +{ + switch (reason) { + case KMSG_DUMP_PANIC: + return "Panic"; + case KMSG_DUMP_OOPS: + return "Oops"; + case KMSG_DUMP_EMERG: + return "Emergency"; + case KMSG_DUMP_RESTART: + return "Restart"; + case KMSG_DUMP_HALT: + return "Halt"; + case KMSG_DUMP_POWEROFF: + return "Poweroff"; + default: + return "Unknown"; + } +} /* * callback from kmsg_dump. (s2,l2) has the most recently @@ -85,17 +101,15 @@ static void pstore_dump(struct kmsg_dumper *dumper, unsigned long s1_start, s2_start; unsigned long l1_cpy, l2_cpy; unsigned long size, total = 0; - char *dst, *why; + char *dst; + const char *why; u64 id; int hsize, ret; unsigned int part = 1; unsigned long flags = 0; int is_locked = 0; - if (reason < ARRAY_SIZE(reason_str)) - why = reason_str[reason]; - else - why = "Unknown"; + why = get_reason_str(reason); if (in_nmi()) { is_locked = spin_trylock(&psinfo->buf_lock); diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 6b009548d2e..552e994e3aa 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -52,38 +52,6 @@ static int qnx4_remount(struct super_block *sb, int *flags, char *data) return 0; } -static struct buffer_head *qnx4_getblk(struct inode *inode, int nr, - int create) -{ - struct buffer_head *result = NULL; - - if ( nr >= 0 ) - nr = qnx4_block_map( inode, nr ); - if (nr) { - result = sb_getblk(inode->i_sb, nr); - return result; - } - return NULL; -} - -struct buffer_head *qnx4_bread(struct inode *inode, int block, int create) -{ - struct buffer_head *bh; - - bh = qnx4_getblk(inode, block, create); - if (!bh || buffer_uptodate(bh)) { - return bh; - } - ll_rw_block(READ, 1, &bh); - wait_on_buffer(bh); - if (buffer_uptodate(bh)) { - return bh; - } - brelse(bh); - - return NULL; -} - static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_head *bh, int create ) { unsigned long phys; @@ -98,23 +66,31 @@ static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_h return 0; } +static inline u32 try_extent(qnx4_xtnt_t *extent, u32 *offset) +{ + u32 size = le32_to_cpu(extent->xtnt_size); + if (*offset < size) + return le32_to_cpu(extent->xtnt_blk) + *offset - 1; + *offset -= size; + return 0; +} + unsigned long qnx4_block_map( struct inode *inode, long iblock ) { int ix; - long offset, i_xblk; - unsigned long block = 0; + long i_xblk; struct buffer_head *bh = NULL; struct qnx4_xblk *xblk = NULL; struct qnx4_inode_entry *qnx4_inode = qnx4_raw_inode(inode); u16 nxtnt = le16_to_cpu(qnx4_inode->di_num_xtnts); + u32 offset = iblock; + u32 block = try_extent(&qnx4_inode->di_first_xtnt, &offset); - if ( iblock < le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_size) ) { + if (block) { // iblock is in the first extent. This is easy. - block = le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_blk) + iblock - 1; } else { // iblock is beyond first extent. We have to follow the extent chain. i_xblk = le32_to_cpu(qnx4_inode->di_xblk); - offset = iblock - le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_size); ix = 0; while ( --nxtnt > 0 ) { if ( ix == 0 ) { @@ -130,12 +106,11 @@ unsigned long qnx4_block_map( struct inode *inode, long iblock ) return -EIO; } } - if ( offset < le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_size) ) { + block = try_extent(&xblk->xblk_xtnts[ix], &offset); + if (block) { // got it! - block = le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_blk) + offset - 1; break; } - offset -= le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_size); if ( ++ix >= xblk->xblk_num_xtnts ) { i_xblk = le32_to_cpu(xblk->xblk_next_xblk); ix = 0; @@ -260,15 +235,13 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) } ret = -ENOMEM; - s->s_root = d_alloc_root(root); + s->s_root = d_make_root(root); if (s->s_root == NULL) - goto outi; + goto outb; brelse(bh); return 0; - outi: - iput(root); outb: kfree(qs->BitMap); out: @@ -288,44 +261,17 @@ static void qnx4_put_super(struct super_block *sb) return; } -static int qnx4_writepage(struct page *page, struct writeback_control *wbc) -{ - return block_write_full_page(page,qnx4_get_block, wbc); -} - static int qnx4_readpage(struct file *file, struct page *page) { return block_read_full_page(page,qnx4_get_block); } -static int qnx4_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata) -{ - struct qnx4_inode_info *qnx4_inode = qnx4_i(mapping->host); - int ret; - - *pagep = NULL; - ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, - qnx4_get_block, - &qnx4_inode->mmu_private); - if (unlikely(ret)) { - loff_t isize = mapping->host->i_size; - if (pos + len > isize) - vmtruncate(mapping->host, isize); - } - - return ret; -} static sector_t qnx4_bmap(struct address_space *mapping, sector_t block) { return generic_block_bmap(mapping,block,qnx4_get_block); } static const struct address_space_operations qnx4_aops = { .readpage = qnx4_readpage, - .writepage = qnx4_writepage, - .write_begin = qnx4_write_begin, - .write_end = generic_write_end, .bmap = qnx4_bmap }; diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c index 275327b5615..a512c0b30e8 100644 --- a/fs/qnx4/namei.c +++ b/fs/qnx4/namei.c @@ -39,10 +39,6 @@ static int qnx4_match(int len, const char *name, } else { namelen = QNX4_SHORT_NAME_MAX; } - /* "" means "." ---> so paths like "/usr/lib//libc.a" work */ - if (!len && (de->di_fname[0] == '.') && (de->di_fname[1] == '\0')) { - return 1; - } thislen = strlen( de->di_fname ); if ( thislen > namelen ) thislen = namelen; @@ -72,7 +68,9 @@ static struct buffer_head *qnx4_find_entry(int len, struct inode *dir, block = offset = blkofs = 0; while (blkofs * QNX4_BLOCK_SIZE + offset < dir->i_size) { if (!bh) { - bh = qnx4_bread(dir, blkofs, 0); + block = qnx4_block_map(dir, blkofs); + if (block) + bh = sb_bread(dir->i_sb, block); if (!bh) { blkofs++; continue; @@ -80,7 +78,6 @@ static struct buffer_head *qnx4_find_entry(int len, struct inode *dir, } *res_dir = (struct qnx4_inode_entry *) (bh->b_data + offset); if (qnx4_match(len, name, bh, &offset)) { - block = qnx4_block_map( dir, blkofs ); *ino = block * QNX4_INODES_PER_BLOCK + (offset / QNX4_DIR_ENTRY_SIZE) - 1; return bh; diff --git a/fs/qnx4/qnx4.h b/fs/qnx4/qnx4.h index 33a60858203..244d4620189 100644 --- a/fs/qnx4/qnx4.h +++ b/fs/qnx4/qnx4.h @@ -27,8 +27,6 @@ extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, stru extern unsigned long qnx4_count_free_blocks(struct super_block *sb); extern unsigned long qnx4_block_map(struct inode *inode, long iblock); -extern struct buffer_head *qnx4_bread(struct inode *, int, int); - extern const struct inode_operations qnx4_dir_inode_operations; extern const struct file_operations qnx4_dir_operations; extern int qnx4_is_free(struct super_block *sb, long block); diff --git a/fs/qnx6/Kconfig b/fs/qnx6/Kconfig new file mode 100644 index 00000000000..edbba5c17cc --- /dev/null +++ b/fs/qnx6/Kconfig @@ -0,0 +1,26 @@ +config QNX6FS_FS + tristate "QNX6 file system support (read only)" + depends on BLOCK && CRC32 + help + This is the file system used by the real-time operating systems + QNX 6 (also called QNX RTP). + Further information is available at <http://www.qnx.com/>. + Say Y if you intend to mount QNX hard disks or floppies formatted + with a mkqnx6fs. + However, keep in mind that this currently is a readonly driver! + + To compile this file system support as a module, choose M here: the + module will be called qnx6. + + If you don't know whether you need it, then you don't need it: + answer N. + +config QNX6FS_DEBUG + bool "QNX6 debugging information" + depends on QNX6FS_FS + help + Turns on extended debugging output. + + If you are not a developer working on the QNX6FS, you probably don't + want this: + answer N. diff --git a/fs/qnx6/Makefile b/fs/qnx6/Makefile new file mode 100644 index 00000000000..9dd06199afc --- /dev/null +++ b/fs/qnx6/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the linux qnx4-filesystem routines. +# + +obj-$(CONFIG_QNX6FS_FS) += qnx6.o + +qnx6-objs := inode.o dir.o namei.o super_mmi.o diff --git a/fs/qnx6/README b/fs/qnx6/README new file mode 100644 index 00000000000..116d622026c --- /dev/null +++ b/fs/qnx6/README @@ -0,0 +1,8 @@ + + This is a snapshot of the QNX6 filesystem for Linux. + Please send diffs and remarks to <chaosman@ontika.net> . + +Credits : + +Al Viro <viro@ZenIV.linux.org.uk> (endless patience with me & support ;)) +Kai Bankett <chaosman@ontika.net> (Maintainer) diff --git a/fs/qnx6/dir.c b/fs/qnx6/dir.c new file mode 100644 index 00000000000..dc597353db3 --- /dev/null +++ b/fs/qnx6/dir.c @@ -0,0 +1,291 @@ +/* + * QNX6 file system, Linux implementation. + * + * Version : 1.0.0 + * + * History : + * + * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release. + * 16-02-2012 pagemap extension by Al Viro + * + */ + +#include "qnx6.h" + +static unsigned qnx6_lfile_checksum(char *name, unsigned size) +{ + unsigned crc = 0; + char *end = name + size; + while (name < end) { + crc = ((crc >> 1) + *(name++)) ^ + ((crc & 0x00000001) ? 0x80000000 : 0); + } + return crc; +} + +static struct page *qnx6_get_page(struct inode *dir, unsigned long n) +{ + struct address_space *mapping = dir->i_mapping; + struct page *page = read_mapping_page(mapping, n, NULL); + if (!IS_ERR(page)) + kmap(page); + return page; +} + +static inline unsigned long dir_pages(struct inode *inode) +{ + return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT; +} + +static unsigned last_entry(struct inode *inode, unsigned long page_nr) +{ + unsigned long last_byte = inode->i_size; + last_byte -= page_nr << PAGE_CACHE_SHIFT; + if (last_byte > PAGE_CACHE_SIZE) + last_byte = PAGE_CACHE_SIZE; + return last_byte / QNX6_DIR_ENTRY_SIZE; +} + +static struct qnx6_long_filename *qnx6_longname(struct super_block *sb, + struct qnx6_long_dir_entry *de, + struct page **p) +{ + struct qnx6_sb_info *sbi = QNX6_SB(sb); + u32 s = fs32_to_cpu(sbi, de->de_long_inode); /* in block units */ + u32 n = s >> (PAGE_CACHE_SHIFT - sb->s_blocksize_bits); /* in pages */ + /* within page */ + u32 offs = (s << sb->s_blocksize_bits) & ~PAGE_CACHE_MASK; + struct address_space *mapping = sbi->longfile->i_mapping; + struct page *page = read_mapping_page(mapping, n, NULL); + if (IS_ERR(page)) + return ERR_CAST(page); + kmap(*p = page); + return (struct qnx6_long_filename *)(page_address(page) + offs); +} + +static int qnx6_dir_longfilename(struct inode *inode, + struct qnx6_long_dir_entry *de, + void *dirent, loff_t pos, + unsigned de_inode, filldir_t filldir) +{ + struct qnx6_long_filename *lf; + struct super_block *s = inode->i_sb; + struct qnx6_sb_info *sbi = QNX6_SB(s); + struct page *page; + int lf_size; + + if (de->de_size != 0xff) { + /* error - long filename entries always have size 0xff + in direntry */ + printk(KERN_ERR "qnx6: invalid direntry size (%i).\n", + de->de_size); + return 0; + } + lf = qnx6_longname(s, de, &page); + if (IS_ERR(lf)) { + printk(KERN_ERR "qnx6:Error reading longname\n"); + return 0; + } + + lf_size = fs16_to_cpu(sbi, lf->lf_size); + + if (lf_size > QNX6_LONG_NAME_MAX) { + QNX6DEBUG((KERN_INFO "file %s\n", lf->lf_fname)); + printk(KERN_ERR "qnx6:Filename too long (%i)\n", lf_size); + qnx6_put_page(page); + return 0; + } + + /* calc & validate longfilename checksum + mmi 3g filesystem does not have that checksum */ + if (!test_opt(s, MMI_FS) && fs32_to_cpu(sbi, de->de_checksum) != + qnx6_lfile_checksum(lf->lf_fname, lf_size)) + printk(KERN_INFO "qnx6: long filename checksum error.\n"); + + QNX6DEBUG((KERN_INFO "qnx6_readdir:%.*s inode:%u\n", + lf_size, lf->lf_fname, de_inode)); + if (filldir(dirent, lf->lf_fname, lf_size, pos, de_inode, + DT_UNKNOWN) < 0) { + qnx6_put_page(page); + return 0; + } + + qnx6_put_page(page); + /* success */ + return 1; +} + +static int qnx6_readdir(struct file *filp, void *dirent, filldir_t filldir) +{ + struct inode *inode = filp->f_path.dentry->d_inode; + struct super_block *s = inode->i_sb; + struct qnx6_sb_info *sbi = QNX6_SB(s); + loff_t pos = filp->f_pos & (QNX6_DIR_ENTRY_SIZE - 1); + unsigned long npages = dir_pages(inode); + unsigned long n = pos >> PAGE_CACHE_SHIFT; + unsigned start = (pos & ~PAGE_CACHE_MASK) / QNX6_DIR_ENTRY_SIZE; + bool done = false; + + if (filp->f_pos >= inode->i_size) + return 0; + + for ( ; !done && n < npages; n++, start = 0) { + struct page *page = qnx6_get_page(inode, n); + int limit = last_entry(inode, n); + struct qnx6_dir_entry *de; + int i = start; + + if (IS_ERR(page)) { + printk(KERN_ERR "qnx6_readdir: read failed\n"); + filp->f_pos = (n + 1) << PAGE_CACHE_SHIFT; + return PTR_ERR(page); + } + de = ((struct qnx6_dir_entry *)page_address(page)) + start; + for (; i < limit; i++, de++, pos += QNX6_DIR_ENTRY_SIZE) { + int size = de->de_size; + u32 no_inode = fs32_to_cpu(sbi, de->de_inode); + + if (!no_inode || !size) + continue; + + if (size > QNX6_SHORT_NAME_MAX) { + /* long filename detected + get the filename from long filename + structure / block */ + if (!qnx6_dir_longfilename(inode, + (struct qnx6_long_dir_entry *)de, + dirent, pos, no_inode, + filldir)) { + done = true; + break; + } + } else { + QNX6DEBUG((KERN_INFO "qnx6_readdir:%.*s" + " inode:%u\n", size, de->de_fname, + no_inode)); + if (filldir(dirent, de->de_fname, size, + pos, no_inode, DT_UNKNOWN) + < 0) { + done = true; + break; + } + } + } + qnx6_put_page(page); + } + filp->f_pos = pos; + return 0; +} + +/* + * check if the long filename is correct. + */ +static unsigned qnx6_long_match(int len, const char *name, + struct qnx6_long_dir_entry *de, struct inode *dir) +{ + struct super_block *s = dir->i_sb; + struct qnx6_sb_info *sbi = QNX6_SB(s); + struct page *page; + int thislen; + struct qnx6_long_filename *lf = qnx6_longname(s, de, &page); + + if (IS_ERR(lf)) + return 0; + + thislen = fs16_to_cpu(sbi, lf->lf_size); + if (len != thislen) { + qnx6_put_page(page); + return 0; + } + if (memcmp(name, lf->lf_fname, len) == 0) { + qnx6_put_page(page); + return fs32_to_cpu(sbi, de->de_inode); + } + qnx6_put_page(page); + return 0; +} + +/* + * check if the filename is correct. + */ +static unsigned qnx6_match(struct super_block *s, int len, const char *name, + struct qnx6_dir_entry *de) +{ + struct qnx6_sb_info *sbi = QNX6_SB(s); + if (memcmp(name, de->de_fname, len) == 0) + return fs32_to_cpu(sbi, de->de_inode); + return 0; +} + + +unsigned qnx6_find_entry(int len, struct inode *dir, const char *name, + struct page **res_page) +{ + struct super_block *s = dir->i_sb; + struct qnx6_inode_info *ei = QNX6_I(dir); + struct page *page = NULL; + unsigned long start, n; + unsigned long npages = dir_pages(dir); + unsigned ino; + struct qnx6_dir_entry *de; + struct qnx6_long_dir_entry *lde; + + *res_page = NULL; + + if (npages == 0) + return 0; + start = ei->i_dir_start_lookup; + if (start >= npages) + start = 0; + n = start; + + do { + page = qnx6_get_page(dir, n); + if (!IS_ERR(page)) { + int limit = last_entry(dir, n); + int i; + + de = (struct qnx6_dir_entry *)page_address(page); + for (i = 0; i < limit; i++, de++) { + if (len <= QNX6_SHORT_NAME_MAX) { + /* short filename */ + if (len != de->de_size) + continue; + ino = qnx6_match(s, len, name, de); + if (ino) + goto found; + } else if (de->de_size == 0xff) { + /* deal with long filename */ + lde = (struct qnx6_long_dir_entry *)de; + ino = qnx6_long_match(len, + name, lde, dir); + if (ino) + goto found; + } else + printk(KERN_ERR "qnx6: undefined " + "filename size in inode.\n"); + } + qnx6_put_page(page); + } + + if (++n >= npages) + n = 0; + } while (n != start); + return 0; + +found: + *res_page = page; + ei->i_dir_start_lookup = n; + return ino; +} + +const struct file_operations qnx6_dir_operations = { + .llseek = generic_file_llseek, + .read = generic_read_dir, + .readdir = qnx6_readdir, + .fsync = generic_file_fsync, +}; + +const struct inode_operations qnx6_dir_inode_operations = { + .lookup = qnx6_lookup, +}; diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c new file mode 100644 index 00000000000..e44012dc564 --- /dev/null +++ b/fs/qnx6/inode.c @@ -0,0 +1,698 @@ +/* + * QNX6 file system, Linux implementation. + * + * Version : 1.0.0 + * + * History : + * + * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release. + * 16-02-2012 pagemap extension by Al Viro + * + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/highuid.h> +#include <linux/pagemap.h> +#include <linux/buffer_head.h> +#include <linux/writeback.h> +#include <linux/statfs.h> +#include <linux/parser.h> +#include <linux/seq_file.h> +#include <linux/mount.h> +#include <linux/crc32.h> +#include <linux/mpage.h> +#include "qnx6.h" + +static const struct super_operations qnx6_sops; + +static void qnx6_put_super(struct super_block *sb); +static struct inode *qnx6_alloc_inode(struct super_block *sb); +static void qnx6_destroy_inode(struct inode *inode); +static int qnx6_remount(struct super_block *sb, int *flags, char *data); +static int qnx6_statfs(struct dentry *dentry, struct kstatfs *buf); +static int qnx6_show_options(struct seq_file *seq, struct dentry *root); + +static const struct super_operations qnx6_sops = { + .alloc_inode = qnx6_alloc_inode, + .destroy_inode = qnx6_destroy_inode, + .put_super = qnx6_put_super, + .statfs = qnx6_statfs, + .remount_fs = qnx6_remount, + .show_options = qnx6_show_options, +}; + +static int qnx6_show_options(struct seq_file *seq, struct dentry *root) +{ + struct super_block *sb = root->d_sb; + struct qnx6_sb_info *sbi = QNX6_SB(sb); + + if (sbi->s_mount_opt & QNX6_MOUNT_MMI_FS) + seq_puts(seq, ",mmi_fs"); + return 0; +} + +static int qnx6_remount(struct super_block *sb, int *flags, char *data) +{ + *flags |= MS_RDONLY; + return 0; +} + +static unsigned qnx6_get_devblock(struct super_block *sb, __fs32 block) +{ + struct qnx6_sb_info *sbi = QNX6_SB(sb); + return fs32_to_cpu(sbi, block) + sbi->s_blks_off; +} + +static unsigned qnx6_block_map(struct inode *inode, unsigned iblock); + +static int qnx6_get_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh, int create) +{ + unsigned phys; + + QNX6DEBUG((KERN_INFO "qnx6: qnx6_get_block inode=[%ld] iblock=[%ld]\n", + inode->i_ino, (unsigned long)iblock)); + + phys = qnx6_block_map(inode, iblock); + if (phys) { + /* logical block is before EOF */ + map_bh(bh, inode->i_sb, phys); + } + return 0; +} + +static int qnx6_check_blockptr(__fs32 ptr) +{ + if (ptr == ~(__fs32)0) { + printk(KERN_ERR "qnx6: hit unused blockpointer.\n"); + return 0; + } + return 1; +} + +static int qnx6_readpage(struct file *file, struct page *page) +{ + return mpage_readpage(page, qnx6_get_block); +} + +static int qnx6_readpages(struct file *file, struct address_space *mapping, + struct list_head *pages, unsigned nr_pages) +{ + return mpage_readpages(mapping, pages, nr_pages, qnx6_get_block); +} + +/* + * returns the block number for the no-th element in the tree + * inodebits requred as there are multiple inodes in one inode block + */ +static unsigned qnx6_block_map(struct inode *inode, unsigned no) +{ + struct super_block *s = inode->i_sb; + struct qnx6_sb_info *sbi = QNX6_SB(s); + struct qnx6_inode_info *ei = QNX6_I(inode); + unsigned block = 0; + struct buffer_head *bh; + __fs32 ptr; + int levelptr; + int ptrbits = sbi->s_ptrbits; + int bitdelta; + u32 mask = (1 << ptrbits) - 1; + int depth = ei->di_filelevels; + int i; + + bitdelta = ptrbits * depth; + levelptr = no >> bitdelta; + + if (levelptr > QNX6_NO_DIRECT_POINTERS - 1) { + printk(KERN_ERR "qnx6:Requested file block number (%u) too big.", + no); + return 0; + } + + block = qnx6_get_devblock(s, ei->di_block_ptr[levelptr]); + + for (i = 0; i < depth; i++) { + bh = sb_bread(s, block); + if (!bh) { + printk(KERN_ERR "qnx6:Error reading block (%u)\n", + block); + return 0; + } + bitdelta -= ptrbits; + levelptr = (no >> bitdelta) & mask; + ptr = ((__fs32 *)bh->b_data)[levelptr]; + + if (!qnx6_check_blockptr(ptr)) + return 0; + + block = qnx6_get_devblock(s, ptr); + brelse(bh); + } + return block; +} + +static int qnx6_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct super_block *sb = dentry->d_sb; + struct qnx6_sb_info *sbi = QNX6_SB(sb); + u64 id = huge_encode_dev(sb->s_bdev->bd_dev); + + buf->f_type = sb->s_magic; + buf->f_bsize = sb->s_blocksize; + buf->f_blocks = fs32_to_cpu(sbi, sbi->sb->sb_num_blocks); + buf->f_bfree = fs32_to_cpu(sbi, sbi->sb->sb_free_blocks); + buf->f_files = fs32_to_cpu(sbi, sbi->sb->sb_num_inodes); + buf->f_ffree = fs32_to_cpu(sbi, sbi->sb->sb_free_inodes); + buf->f_bavail = buf->f_bfree; + buf->f_namelen = QNX6_LONG_NAME_MAX; + buf->f_fsid.val[0] = (u32)id; + buf->f_fsid.val[1] = (u32)(id >> 32); + + return 0; +} + +/* + * Check the root directory of the filesystem to make sure + * it really _is_ a qnx6 filesystem, and to check the size + * of the directory entry. + */ +static const char *qnx6_checkroot(struct super_block *s) +{ + static char match_root[2][3] = {".\0\0", "..\0"}; + int i, error = 0; + struct qnx6_dir_entry *dir_entry; + struct inode *root = s->s_root->d_inode; + struct address_space *mapping = root->i_mapping; + struct page *page = read_mapping_page(mapping, 0, NULL); + if (IS_ERR(page)) + return "error reading root directory"; + kmap(page); + dir_entry = page_address(page); + for (i = 0; i < 2; i++) { + /* maximum 3 bytes - due to match_root limitation */ + if (strncmp(dir_entry[i].de_fname, match_root[i], 3)) + error = 1; + } + qnx6_put_page(page); + if (error) + return "error reading root directory."; + return NULL; +} + +#ifdef CONFIG_QNX6FS_DEBUG +void qnx6_superblock_debug(struct qnx6_super_block *sb, struct super_block *s) +{ + struct qnx6_sb_info *sbi = QNX6_SB(s); + + QNX6DEBUG((KERN_INFO "magic: %08x\n", + fs32_to_cpu(sbi, sb->sb_magic))); + QNX6DEBUG((KERN_INFO "checksum: %08x\n", + fs32_to_cpu(sbi, sb->sb_checksum))); + QNX6DEBUG((KERN_INFO "serial: %llx\n", + fs64_to_cpu(sbi, sb->sb_serial))); + QNX6DEBUG((KERN_INFO "flags: %08x\n", + fs32_to_cpu(sbi, sb->sb_flags))); + QNX6DEBUG((KERN_INFO "blocksize: %08x\n", + fs32_to_cpu(sbi, sb->sb_blocksize))); + QNX6DEBUG((KERN_INFO "num_inodes: %08x\n", + fs32_to_cpu(sbi, sb->sb_num_inodes))); + QNX6DEBUG((KERN_INFO "free_inodes: %08x\n", + fs32_to_cpu(sbi, sb->sb_free_inodes))); + QNX6DEBUG((KERN_INFO "num_blocks: %08x\n", + fs32_to_cpu(sbi, sb->sb_num_blocks))); + QNX6DEBUG((KERN_INFO "free_blocks: %08x\n", + fs32_to_cpu(sbi, sb->sb_free_blocks))); + QNX6DEBUG((KERN_INFO "inode_levels: %02x\n", + sb->Inode.levels)); +} +#endif + +enum { + Opt_mmifs, + Opt_err +}; + +static const match_table_t tokens = { + {Opt_mmifs, "mmi_fs"}, + {Opt_err, NULL} +}; + +static int qnx6_parse_options(char *options, struct super_block *sb) +{ + char *p; + struct qnx6_sb_info *sbi = QNX6_SB(sb); + substring_t args[MAX_OPT_ARGS]; + + if (!options) + return 1; + + while ((p = strsep(&options, ",")) != NULL) { + int token; + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_mmifs: + set_opt(sbi->s_mount_opt, MMI_FS); + break; + default: + return 0; + } + } + return 1; +} + +static struct buffer_head *qnx6_check_first_superblock(struct super_block *s, + int offset, int silent) +{ + struct qnx6_sb_info *sbi = QNX6_SB(s); + struct buffer_head *bh; + struct qnx6_super_block *sb; + + /* Check the superblock signatures + start with the first superblock */ + bh = sb_bread(s, offset); + if (!bh) { + printk(KERN_ERR "qnx6: unable to read the first superblock\n"); + return NULL; + } + sb = (struct qnx6_super_block *)bh->b_data; + if (fs32_to_cpu(sbi, sb->sb_magic) != QNX6_SUPER_MAGIC) { + sbi->s_bytesex = BYTESEX_BE; + if (fs32_to_cpu(sbi, sb->sb_magic) == QNX6_SUPER_MAGIC) { + /* we got a big endian fs */ + QNX6DEBUG((KERN_INFO "qnx6: fs got different" + " endianess.\n")); + return bh; + } else + sbi->s_bytesex = BYTESEX_LE; + if (!silent) { + if (offset == 0) { + printk(KERN_ERR "qnx6: wrong signature (magic)" + " in superblock #1.\n"); + } else { + printk(KERN_INFO "qnx6: wrong signature (magic)" + " at position (0x%lx) - will try" + " alternative position (0x0000).\n", + offset * s->s_blocksize); + } + } + brelse(bh); + return NULL; + } + return bh; +} + +static struct inode *qnx6_private_inode(struct super_block *s, + struct qnx6_root_node *p); + +static int qnx6_fill_super(struct super_block *s, void *data, int silent) +{ + struct buffer_head *bh1 = NULL, *bh2 = NULL; + struct qnx6_super_block *sb1 = NULL, *sb2 = NULL; + struct qnx6_sb_info *sbi; + struct inode *root; + const char *errmsg; + struct qnx6_sb_info *qs; + int ret = -EINVAL; + u64 offset; + int bootblock_offset = QNX6_BOOTBLOCK_SIZE; + + qs = kzalloc(sizeof(struct qnx6_sb_info), GFP_KERNEL); + if (!qs) + return -ENOMEM; + s->s_fs_info = qs; + + /* Superblock always is 512 Byte long */ + if (!sb_set_blocksize(s, QNX6_SUPERBLOCK_SIZE)) { + printk(KERN_ERR "qnx6: unable to set blocksize\n"); + goto outnobh; + } + + /* parse the mount-options */ + if (!qnx6_parse_options((char *) data, s)) { + printk(KERN_ERR "qnx6: invalid mount options.\n"); + goto outnobh; + } + if (test_opt(s, MMI_FS)) { + sb1 = qnx6_mmi_fill_super(s, silent); + if (sb1) + goto mmi_success; + else + goto outnobh; + } + sbi = QNX6_SB(s); + sbi->s_bytesex = BYTESEX_LE; + /* Check the superblock signatures + start with the first superblock */ + bh1 = qnx6_check_first_superblock(s, + bootblock_offset / QNX6_SUPERBLOCK_SIZE, silent); + if (!bh1) { + /* try again without bootblock offset */ + bh1 = qnx6_check_first_superblock(s, 0, silent); + if (!bh1) { + printk(KERN_ERR "qnx6: unable to read the first superblock\n"); + goto outnobh; + } + /* seems that no bootblock at partition start */ + bootblock_offset = 0; + } + sb1 = (struct qnx6_super_block *)bh1->b_data; + +#ifdef CONFIG_QNX6FS_DEBUG + qnx6_superblock_debug(sb1, s); +#endif + + /* checksum check - start at byte 8 and end at byte 512 */ + if (fs32_to_cpu(sbi, sb1->sb_checksum) != + crc32_be(0, (char *)(bh1->b_data + 8), 504)) { + printk(KERN_ERR "qnx6: superblock #1 checksum error\n"); + goto out; + } + + /* set new blocksize */ + if (!sb_set_blocksize(s, fs32_to_cpu(sbi, sb1->sb_blocksize))) { + printk(KERN_ERR "qnx6: unable to set blocksize\n"); + goto out; + } + /* blocksize invalidates bh - pull it back in */ + brelse(bh1); + bh1 = sb_bread(s, bootblock_offset >> s->s_blocksize_bits); + if (!bh1) + goto outnobh; + sb1 = (struct qnx6_super_block *)bh1->b_data; + + /* calculate second superblock blocknumber */ + offset = fs32_to_cpu(sbi, sb1->sb_num_blocks) + + (bootblock_offset >> s->s_blocksize_bits) + + (QNX6_SUPERBLOCK_AREA >> s->s_blocksize_bits); + + /* set bootblock offset */ + sbi->s_blks_off = (bootblock_offset >> s->s_blocksize_bits) + + (QNX6_SUPERBLOCK_AREA >> s->s_blocksize_bits); + + /* next the second superblock */ + bh2 = sb_bread(s, offset); + if (!bh2) { + printk(KERN_ERR "qnx6: unable to read the second superblock\n"); + goto out; + } + sb2 = (struct qnx6_super_block *)bh2->b_data; + if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) { + if (!silent) + printk(KERN_ERR "qnx6: wrong signature (magic)" + " in superblock #2.\n"); + goto out; + } + + /* checksum check - start at byte 8 and end at byte 512 */ + if (fs32_to_cpu(sbi, sb2->sb_checksum) != + crc32_be(0, (char *)(bh2->b_data + 8), 504)) { + printk(KERN_ERR "qnx6: superblock #2 checksum error\n"); + goto out; + } + + if (fs64_to_cpu(sbi, sb1->sb_serial) >= + fs64_to_cpu(sbi, sb2->sb_serial)) { + /* superblock #1 active */ + sbi->sb_buf = bh1; + sbi->sb = (struct qnx6_super_block *)bh1->b_data; + brelse(bh2); + printk(KERN_INFO "qnx6: superblock #1 active\n"); + } else { + /* superblock #2 active */ + sbi->sb_buf = bh2; + sbi->sb = (struct qnx6_super_block *)bh2->b_data; + brelse(bh1); + printk(KERN_INFO "qnx6: superblock #2 active\n"); + } +mmi_success: + /* sanity check - limit maximum indirect pointer levels */ + if (sb1->Inode.levels > QNX6_PTR_MAX_LEVELS) { + printk(KERN_ERR "qnx6: too many inode levels (max %i, sb %i)\n", + QNX6_PTR_MAX_LEVELS, sb1->Inode.levels); + goto out; + } + if (sb1->Longfile.levels > QNX6_PTR_MAX_LEVELS) { + printk(KERN_ERR "qnx6: too many longfilename levels" + " (max %i, sb %i)\n", + QNX6_PTR_MAX_LEVELS, sb1->Longfile.levels); + goto out; + } + s->s_op = &qnx6_sops; + s->s_magic = QNX6_SUPER_MAGIC; + s->s_flags |= MS_RDONLY; /* Yup, read-only yet */ + + /* ease the later tree level calculations */ + sbi = QNX6_SB(s); + sbi->s_ptrbits = ilog2(s->s_blocksize / 4); + sbi->inodes = qnx6_private_inode(s, &sb1->Inode); + if (!sbi->inodes) + goto out; + sbi->longfile = qnx6_private_inode(s, &sb1->Longfile); + if (!sbi->longfile) + goto out1; + + /* prefetch root inode */ + root = qnx6_iget(s, QNX6_ROOT_INO); + if (IS_ERR(root)) { + printk(KERN_ERR "qnx6: get inode failed\n"); + ret = PTR_ERR(root); + goto out2; + } + + ret = -ENOMEM; + s->s_root = d_make_root(root); + if (!s->s_root) + goto out2; + + ret = -EINVAL; + errmsg = qnx6_checkroot(s); + if (errmsg != NULL) { + if (!silent) + printk(KERN_ERR "qnx6: %s\n", errmsg); + goto out3; + } + return 0; + +out3: + dput(s->s_root); + s->s_root = NULL; +out2: + iput(sbi->longfile); +out1: + iput(sbi->inodes); +out: + if (bh1) + brelse(bh1); + if (bh2) + brelse(bh2); +outnobh: + kfree(qs); + s->s_fs_info = NULL; + return ret; +} + +static void qnx6_put_super(struct super_block *sb) +{ + struct qnx6_sb_info *qs = QNX6_SB(sb); + brelse(qs->sb_buf); + iput(qs->longfile); + iput(qs->inodes); + kfree(qs); + sb->s_fs_info = NULL; + return; +} + +static sector_t qnx6_bmap(struct address_space *mapping, sector_t block) +{ + return generic_block_bmap(mapping, block, qnx6_get_block); +} +static const struct address_space_operations qnx6_aops = { + .readpage = qnx6_readpage, + .readpages = qnx6_readpages, + .bmap = qnx6_bmap +}; + +static struct inode *qnx6_private_inode(struct super_block *s, + struct qnx6_root_node *p) +{ + struct inode *inode = new_inode(s); + if (inode) { + struct qnx6_inode_info *ei = QNX6_I(inode); + struct qnx6_sb_info *sbi = QNX6_SB(s); + inode->i_size = fs64_to_cpu(sbi, p->size); + memcpy(ei->di_block_ptr, p->ptr, sizeof(p->ptr)); + ei->di_filelevels = p->levels; + inode->i_mode = S_IFREG | S_IRUSR; /* probably wrong */ + inode->i_mapping->a_ops = &qnx6_aops; + } + return inode; +} + +struct inode *qnx6_iget(struct super_block *sb, unsigned ino) +{ + struct qnx6_sb_info *sbi = QNX6_SB(sb); + struct qnx6_inode_entry *raw_inode; + struct inode *inode; + struct qnx6_inode_info *ei; + struct address_space *mapping; + struct page *page; + u32 n, offs; + + inode = iget_locked(sb, ino); + if (!inode) + return ERR_PTR(-ENOMEM); + if (!(inode->i_state & I_NEW)) + return inode; + + ei = QNX6_I(inode); + + inode->i_mode = 0; + + if (ino == 0) { + printk(KERN_ERR "qnx6: bad inode number on dev %s: %u is " + "out of range\n", + sb->s_id, ino); + iget_failed(inode); + return ERR_PTR(-EIO); + } + n = (ino - 1) >> (PAGE_CACHE_SHIFT - QNX6_INODE_SIZE_BITS); + offs = (ino - 1) & (~PAGE_CACHE_MASK >> QNX6_INODE_SIZE_BITS); + mapping = sbi->inodes->i_mapping; + page = read_mapping_page(mapping, n, NULL); + if (IS_ERR(page)) { + printk(KERN_ERR "qnx6: major problem: unable to read inode from " + "dev %s\n", sb->s_id); + iget_failed(inode); + return ERR_CAST(page); + } + kmap(page); + raw_inode = ((struct qnx6_inode_entry *)page_address(page)) + offs; + + inode->i_mode = fs16_to_cpu(sbi, raw_inode->di_mode); + inode->i_uid = (uid_t)fs32_to_cpu(sbi, raw_inode->di_uid); + inode->i_gid = (gid_t)fs32_to_cpu(sbi, raw_inode->di_gid); + inode->i_size = fs64_to_cpu(sbi, raw_inode->di_size); + inode->i_mtime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_mtime); + inode->i_mtime.tv_nsec = 0; + inode->i_atime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_atime); + inode->i_atime.tv_nsec = 0; + inode->i_ctime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_ctime); + inode->i_ctime.tv_nsec = 0; + + /* calc blocks based on 512 byte blocksize */ + inode->i_blocks = (inode->i_size + 511) >> 9; + + memcpy(&ei->di_block_ptr, &raw_inode->di_block_ptr, + sizeof(raw_inode->di_block_ptr)); + ei->di_filelevels = raw_inode->di_filelevels; + + if (S_ISREG(inode->i_mode)) { + inode->i_fop = &generic_ro_fops; + inode->i_mapping->a_ops = &qnx6_aops; + } else if (S_ISDIR(inode->i_mode)) { + inode->i_op = &qnx6_dir_inode_operations; + inode->i_fop = &qnx6_dir_operations; + inode->i_mapping->a_ops = &qnx6_aops; + } else if (S_ISLNK(inode->i_mode)) { + inode->i_op = &page_symlink_inode_operations; + inode->i_mapping->a_ops = &qnx6_aops; + } else + init_special_inode(inode, inode->i_mode, 0); + qnx6_put_page(page); + unlock_new_inode(inode); + return inode; +} + +static struct kmem_cache *qnx6_inode_cachep; + +static struct inode *qnx6_alloc_inode(struct super_block *sb) +{ + struct qnx6_inode_info *ei; + ei = kmem_cache_alloc(qnx6_inode_cachep, GFP_KERNEL); + if (!ei) + return NULL; + return &ei->vfs_inode; +} + +static void qnx6_i_callback(struct rcu_head *head) +{ + struct inode *inode = container_of(head, struct inode, i_rcu); + INIT_LIST_HEAD(&inode->i_dentry); + kmem_cache_free(qnx6_inode_cachep, QNX6_I(inode)); +} + +static void qnx6_destroy_inode(struct inode *inode) +{ + call_rcu(&inode->i_rcu, qnx6_i_callback); +} + +static void init_once(void *foo) +{ + struct qnx6_inode_info *ei = (struct qnx6_inode_info *) foo; + + inode_init_once(&ei->vfs_inode); +} + +static int init_inodecache(void) +{ + qnx6_inode_cachep = kmem_cache_create("qnx6_inode_cache", + sizeof(struct qnx6_inode_info), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD), + init_once); + if (!qnx6_inode_cachep) + return -ENOMEM; + return 0; +} + +static void destroy_inodecache(void) +{ + kmem_cache_destroy(qnx6_inode_cachep); +} + +static struct dentry *qnx6_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + return mount_bdev(fs_type, flags, dev_name, data, qnx6_fill_super); +} + +static struct file_system_type qnx6_fs_type = { + .owner = THIS_MODULE, + .name = "qnx6", + .mount = qnx6_mount, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; + +static int __init init_qnx6_fs(void) +{ + int err; + + err = init_inodecache(); + if (err) + return err; + + err = register_filesystem(&qnx6_fs_type); + if (err) { + destroy_inodecache(); + return err; + } + + printk(KERN_INFO "QNX6 filesystem 1.0.0 registered.\n"); + return 0; +} + +static void __exit exit_qnx6_fs(void) +{ + unregister_filesystem(&qnx6_fs_type); + destroy_inodecache(); +} + +module_init(init_qnx6_fs) +module_exit(exit_qnx6_fs) +MODULE_LICENSE("GPL"); diff --git a/fs/qnx6/namei.c b/fs/qnx6/namei.c new file mode 100644 index 00000000000..8a97289e04a --- /dev/null +++ b/fs/qnx6/namei.c @@ -0,0 +1,42 @@ +/* + * QNX6 file system, Linux implementation. + * + * Version : 1.0.0 + * + * History : + * + * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release. + * 16-02-2012 pagemap extension by Al Viro + * + */ + +#include "qnx6.h" + +struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *nd) +{ + unsigned ino; + struct page *page; + struct inode *foundinode = NULL; + const char *name = dentry->d_name.name; + int len = dentry->d_name.len; + + if (len > QNX6_LONG_NAME_MAX) + return ERR_PTR(-ENAMETOOLONG); + + ino = qnx6_find_entry(len, dir, name, &page); + if (ino) { + foundinode = qnx6_iget(dir->i_sb, ino); + qnx6_put_page(page); + if (IS_ERR(foundinode)) { + QNX6DEBUG((KERN_ERR "qnx6: lookup->iget -> " + " error %ld\n", PTR_ERR(foundinode))); + return ERR_CAST(foundinode); + } + } else { + QNX6DEBUG((KERN_INFO "qnx6_lookup: not found %s\n", name)); + return NULL; + } + d_add(dentry, foundinode); + return NULL; +} diff --git a/fs/qnx6/qnx6.h b/fs/qnx6/qnx6.h new file mode 100644 index 00000000000..6c5e02a0b6a --- /dev/null +++ b/fs/qnx6/qnx6.h @@ -0,0 +1,135 @@ +/* + * QNX6 file system, Linux implementation. + * + * Version : 1.0.0 + * + * History : + * + * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release. + * 16-02-2012 page map extension by Al Viro + * + */ + +#include <linux/fs.h> +#include <linux/pagemap.h> + +typedef __u16 __bitwise __fs16; +typedef __u32 __bitwise __fs32; +typedef __u64 __bitwise __fs64; + +#include <linux/qnx6_fs.h> + +#ifdef CONFIG_QNX6FS_DEBUG +#define QNX6DEBUG(X) printk X +#else +#define QNX6DEBUG(X) (void) 0 +#endif + +struct qnx6_sb_info { + struct buffer_head *sb_buf; /* superblock buffer */ + struct qnx6_super_block *sb; /* our superblock */ + int s_blks_off; /* blkoffset fs-startpoint */ + int s_ptrbits; /* indirect pointer bitfield */ + unsigned long s_mount_opt; /* all mount options */ + int s_bytesex; /* holds endianess info */ + struct inode * inodes; + struct inode * longfile; +}; + +struct qnx6_inode_info { + __fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS]; + __u8 di_filelevels; + __u32 i_dir_start_lookup; + struct inode vfs_inode; +}; + +extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino); +extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *nd); + +#ifdef CONFIG_QNX6FS_DEBUG +extern void qnx6_superblock_debug(struct qnx6_super_block *, + struct super_block *); +#endif + +extern const struct inode_operations qnx6_dir_inode_operations; +extern const struct file_operations qnx6_dir_operations; + +static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + +static inline struct qnx6_inode_info *QNX6_I(struct inode *inode) +{ + return container_of(inode, struct qnx6_inode_info, vfs_inode); +} + +#define clear_opt(o, opt) (o &= ~(QNX6_MOUNT_##opt)) +#define set_opt(o, opt) (o |= (QNX6_MOUNT_##opt)) +#define test_opt(sb, opt) (QNX6_SB(sb)->s_mount_opt & \ + QNX6_MOUNT_##opt) +enum { + BYTESEX_LE, + BYTESEX_BE, +}; + +static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return le64_to_cpu((__force __le64)n); + else + return be64_to_cpu((__force __be64)n); +} + +static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return (__force __fs64)cpu_to_le64(n); + else + return (__force __fs64)cpu_to_be64(n); +} + +static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return le32_to_cpu((__force __le32)n); + else + return be32_to_cpu((__force __be32)n); +} + +static inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return (__force __fs32)cpu_to_le32(n); + else + return (__force __fs32)cpu_to_be32(n); +} + +static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return le16_to_cpu((__force __le16)n); + else + return be16_to_cpu((__force __be16)n); +} + +static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n) +{ + if (sbi->s_bytesex == BYTESEX_LE) + return (__force __fs16)cpu_to_le16(n); + else + return (__force __fs16)cpu_to_be16(n); +} + +extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, + int silent); + +static inline void qnx6_put_page(struct page *page) +{ + kunmap(page); + page_cache_release(page); +} + +extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name, + struct page **res_page); diff --git a/fs/qnx6/super_mmi.c b/fs/qnx6/super_mmi.c new file mode 100644 index 00000000000..29c32cba62d --- /dev/null +++ b/fs/qnx6/super_mmi.c @@ -0,0 +1,150 @@ +/* + * QNX6 file system, Linux implementation. + * + * Version : 1.0.0 + * + * History : + * + * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release. + * + */ + +#include <linux/buffer_head.h> +#include <linux/slab.h> +#include <linux/crc32.h> +#include "qnx6.h" + +static void qnx6_mmi_copy_sb(struct qnx6_super_block *qsb, + struct qnx6_mmi_super_block *sb) +{ + qsb->sb_magic = sb->sb_magic; + qsb->sb_checksum = sb->sb_checksum; + qsb->sb_serial = sb->sb_serial; + qsb->sb_blocksize = sb->sb_blocksize; + qsb->sb_num_inodes = sb->sb_num_inodes; + qsb->sb_free_inodes = sb->sb_free_inodes; + qsb->sb_num_blocks = sb->sb_num_blocks; + qsb->sb_free_blocks = sb->sb_free_blocks; + + /* the rest of the superblock is the same */ + memcpy(&qsb->Inode, &sb->Inode, sizeof(sb->Inode)); + memcpy(&qsb->Bitmap, &sb->Bitmap, sizeof(sb->Bitmap)); + memcpy(&qsb->Longfile, &sb->Longfile, sizeof(sb->Longfile)); +} + +struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, int silent) +{ + struct buffer_head *bh1, *bh2 = NULL; + struct qnx6_mmi_super_block *sb1, *sb2; + struct qnx6_super_block *qsb = NULL; + struct qnx6_sb_info *sbi; + __u64 offset; + + /* Check the superblock signatures + start with the first superblock */ + bh1 = sb_bread(s, 0); + if (!bh1) { + printk(KERN_ERR "qnx6: Unable to read first mmi superblock\n"); + return NULL; + } + sb1 = (struct qnx6_mmi_super_block *)bh1->b_data; + sbi = QNX6_SB(s); + if (fs32_to_cpu(sbi, sb1->sb_magic) != QNX6_SUPER_MAGIC) { + if (!silent) { + printk(KERN_ERR "qnx6: wrong signature (magic) in" + " superblock #1.\n"); + goto out; + } + } + + /* checksum check - start at byte 8 and end at byte 512 */ + if (fs32_to_cpu(sbi, sb1->sb_checksum) != + crc32_be(0, (char *)(bh1->b_data + 8), 504)) { + printk(KERN_ERR "qnx6: superblock #1 checksum error\n"); + goto out; + } + + /* calculate second superblock blocknumber */ + offset = fs32_to_cpu(sbi, sb1->sb_num_blocks) + QNX6_SUPERBLOCK_AREA / + fs32_to_cpu(sbi, sb1->sb_blocksize); + + /* set new blocksize */ + if (!sb_set_blocksize(s, fs32_to_cpu(sbi, sb1->sb_blocksize))) { + printk(KERN_ERR "qnx6: unable to set blocksize\n"); + goto out; + } + /* blocksize invalidates bh - pull it back in */ + brelse(bh1); + bh1 = sb_bread(s, 0); + if (!bh1) + goto out; + sb1 = (struct qnx6_mmi_super_block *)bh1->b_data; + + /* read second superblock */ + bh2 = sb_bread(s, offset); + if (!bh2) { + printk(KERN_ERR "qnx6: unable to read the second superblock\n"); + goto out; + } + sb2 = (struct qnx6_mmi_super_block *)bh2->b_data; + if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) { + if (!silent) + printk(KERN_ERR "qnx6: wrong signature (magic) in" + " superblock #2.\n"); + goto out; + } + + /* checksum check - start at byte 8 and end at byte 512 */ + if (fs32_to_cpu(sbi, sb2->sb_checksum) + != crc32_be(0, (char *)(bh2->b_data + 8), 504)) { + printk(KERN_ERR "qnx6: superblock #1 checksum error\n"); + goto out; + } + + qsb = kmalloc(sizeof(*qsb), GFP_KERNEL); + if (!qsb) { + printk(KERN_ERR "qnx6: unable to allocate memory.\n"); + goto out; + } + + if (fs64_to_cpu(sbi, sb1->sb_serial) > + fs64_to_cpu(sbi, sb2->sb_serial)) { + /* superblock #1 active */ + qnx6_mmi_copy_sb(qsb, sb1); +#ifdef CONFIG_QNX6FS_DEBUG + qnx6_superblock_debug(qsb, s); +#endif + memcpy(bh1->b_data, qsb, sizeof(struct qnx6_super_block)); + + sbi->sb_buf = bh1; + sbi->sb = (struct qnx6_super_block *)bh1->b_data; + brelse(bh2); + printk(KERN_INFO "qnx6: superblock #1 active\n"); + } else { + /* superblock #2 active */ + qnx6_mmi_copy_sb(qsb, sb2); +#ifdef CONFIG_QNX6FS_DEBUG + qnx6_superblock_debug(qsb, s); +#endif + memcpy(bh2->b_data, qsb, sizeof(struct qnx6_super_block)); + + sbi->sb_buf = bh2; + sbi->sb = (struct qnx6_super_block *)bh2->b_data; + brelse(bh1); + printk(KERN_INFO "qnx6: superblock #2 active\n"); + } + kfree(qsb); + + /* offset for mmi_fs is just SUPERBLOCK_AREA bytes */ + sbi->s_blks_off = QNX6_SUPERBLOCK_AREA / s->s_blocksize; + + /* success */ + return sbi->sb; + +out: + if (bh1 != NULL) + brelse(bh1); + if (bh2 != NULL) + brelse(bh2); + return NULL; +} diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 5ec59b20cf7..d69a1d1d7e1 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -71,6 +71,7 @@ #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/security.h> +#include <linux/sched.h> #include <linux/kmod.h> #include <linux/namei.h> #include <linux/capability.h> @@ -1109,6 +1110,13 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number) clear_bit(DQ_BLKS_B, &dquot->dq_flags); } +struct dquot_warn { + struct super_block *w_sb; + qid_t w_dq_id; + short w_dq_type; + short w_type; +}; + static int warning_issued(struct dquot *dquot, const int warntype) { int flag = (warntype == QUOTA_NL_BHARDWARN || @@ -1124,41 +1132,42 @@ static int warning_issued(struct dquot *dquot, const int warntype) #ifdef CONFIG_PRINT_QUOTA_WARNING static int flag_print_warnings = 1; -static int need_print_warning(struct dquot *dquot) +static int need_print_warning(struct dquot_warn *warn) { if (!flag_print_warnings) return 0; - switch (dquot->dq_type) { + switch (warn->w_dq_type) { case USRQUOTA: - return current_fsuid() == dquot->dq_id; + return current_fsuid() == warn->w_dq_id; case GRPQUOTA: - return in_group_p(dquot->dq_id); + return in_group_p(warn->w_dq_id); } return 0; } /* Print warning to user which exceeded quota */ -static void print_warning(struct dquot *dquot, const int warntype) +static void print_warning(struct dquot_warn *warn) { char *msg = NULL; struct tty_struct *tty; + int warntype = warn->w_type; if (warntype == QUOTA_NL_IHARDBELOW || warntype == QUOTA_NL_ISOFTBELOW || warntype == QUOTA_NL_BHARDBELOW || - warntype == QUOTA_NL_BSOFTBELOW || !need_print_warning(dquot)) + warntype == QUOTA_NL_BSOFTBELOW || !need_print_warning(warn)) return; tty = get_current_tty(); if (!tty) return; - tty_write_message(tty, dquot->dq_sb->s_id); + tty_write_message(tty, warn->w_sb->s_id); if (warntype == QUOTA_NL_ISOFTWARN || warntype == QUOTA_NL_BSOFTWARN) tty_write_message(tty, ": warning, "); else tty_write_message(tty, ": write failed, "); - tty_write_message(tty, quotatypes[dquot->dq_type]); + tty_write_message(tty, quotatypes[warn->w_dq_type]); switch (warntype) { case QUOTA_NL_IHARDWARN: msg = " file limit reached.\r\n"; @@ -1184,26 +1193,34 @@ static void print_warning(struct dquot *dquot, const int warntype) } #endif +static void prepare_warning(struct dquot_warn *warn, struct dquot *dquot, + int warntype) +{ + if (warning_issued(dquot, warntype)) + return; + warn->w_type = warntype; + warn->w_sb = dquot->dq_sb; + warn->w_dq_id = dquot->dq_id; + warn->w_dq_type = dquot->dq_type; +} + /* * Write warnings to the console and send warning messages over netlink. * - * Note that this function can sleep. + * Note that this function can call into tty and networking code. */ -static void flush_warnings(struct dquot *const *dquots, char *warntype) +static void flush_warnings(struct dquot_warn *warn) { - struct dquot *dq; int i; for (i = 0; i < MAXQUOTAS; i++) { - dq = dquots[i]; - if (dq && warntype[i] != QUOTA_NL_NOWARN && - !warning_issued(dq, warntype[i])) { + if (warn[i].w_type == QUOTA_NL_NOWARN) + continue; #ifdef CONFIG_PRINT_QUOTA_WARNING - print_warning(dq, warntype[i]); + print_warning(&warn[i]); #endif - quota_send_warning(dq->dq_type, dq->dq_id, - dq->dq_sb->s_dev, warntype[i]); - } + quota_send_warning(warn[i].w_dq_type, warn[i].w_dq_id, + warn[i].w_sb->s_dev, warn[i].w_type); } } @@ -1217,11 +1234,11 @@ static int ignore_hardlimit(struct dquot *dquot) } /* needs dq_data_lock */ -static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype) +static int check_idq(struct dquot *dquot, qsize_t inodes, + struct dquot_warn *warn) { qsize_t newinodes = dquot->dq_dqb.dqb_curinodes + inodes; - *warntype = QUOTA_NL_NOWARN; if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) || test_bit(DQ_FAKE_B, &dquot->dq_flags)) return 0; @@ -1229,7 +1246,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype) if (dquot->dq_dqb.dqb_ihardlimit && newinodes > dquot->dq_dqb.dqb_ihardlimit && !ignore_hardlimit(dquot)) { - *warntype = QUOTA_NL_IHARDWARN; + prepare_warning(warn, dquot, QUOTA_NL_IHARDWARN); return -EDQUOT; } @@ -1238,14 +1255,14 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype) dquot->dq_dqb.dqb_itime && get_seconds() >= dquot->dq_dqb.dqb_itime && !ignore_hardlimit(dquot)) { - *warntype = QUOTA_NL_ISOFTLONGWARN; + prepare_warning(warn, dquot, QUOTA_NL_ISOFTLONGWARN); return -EDQUOT; } if (dquot->dq_dqb.dqb_isoftlimit && newinodes > dquot->dq_dqb.dqb_isoftlimit && dquot->dq_dqb.dqb_itime == 0) { - *warntype = QUOTA_NL_ISOFTWARN; + prepare_warning(warn, dquot, QUOTA_NL_ISOFTWARN); dquot->dq_dqb.dqb_itime = get_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace; } @@ -1254,12 +1271,12 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype) } /* needs dq_data_lock */ -static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *warntype) +static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, + struct dquot_warn *warn) { qsize_t tspace; struct super_block *sb = dquot->dq_sb; - *warntype = QUOTA_NL_NOWARN; if (!sb_has_quota_limits_enabled(sb, dquot->dq_type) || test_bit(DQ_FAKE_B, &dquot->dq_flags)) return 0; @@ -1271,7 +1288,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war tspace > dquot->dq_dqb.dqb_bhardlimit && !ignore_hardlimit(dquot)) { if (!prealloc) - *warntype = QUOTA_NL_BHARDWARN; + prepare_warning(warn, dquot, QUOTA_NL_BHARDWARN); return -EDQUOT; } @@ -1281,7 +1298,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war get_seconds() >= dquot->dq_dqb.dqb_btime && !ignore_hardlimit(dquot)) { if (!prealloc) - *warntype = QUOTA_NL_BSOFTLONGWARN; + prepare_warning(warn, dquot, QUOTA_NL_BSOFTLONGWARN); return -EDQUOT; } @@ -1289,7 +1306,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war tspace > dquot->dq_dqb.dqb_bsoftlimit && dquot->dq_dqb.dqb_btime == 0) { if (!prealloc) { - *warntype = QUOTA_NL_BSOFTWARN; + prepare_warning(warn, dquot, QUOTA_NL_BSOFTWARN); dquot->dq_dqb.dqb_btime = get_seconds() + sb_dqopt(sb)->info[dquot->dq_type].dqi_bgrace; } @@ -1542,10 +1559,9 @@ static void inode_decr_space(struct inode *inode, qsize_t number, int reserve) int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags) { int cnt, ret = 0; - char warntype[MAXQUOTAS]; - int warn = flags & DQUOT_SPACE_WARN; + struct dquot_warn warn[MAXQUOTAS]; + struct dquot **dquots = inode->i_dquot; int reserve = flags & DQUOT_SPACE_RESERVE; - int nofail = flags & DQUOT_SPACE_NOFAIL; /* * First test before acquiring mutex - solves deadlocks when we @@ -1558,36 +1574,36 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags) down_read(&sb_dqopt(inode->i_sb)->dqptr_sem); for (cnt = 0; cnt < MAXQUOTAS; cnt++) - warntype[cnt] = QUOTA_NL_NOWARN; + warn[cnt].w_type = QUOTA_NL_NOWARN; spin_lock(&dq_data_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + if (!dquots[cnt]) continue; - ret = check_bdq(inode->i_dquot[cnt], number, !warn, - warntype+cnt); - if (ret && !nofail) { + ret = check_bdq(dquots[cnt], number, + !(flags & DQUOT_SPACE_WARN), &warn[cnt]); + if (ret && !(flags & DQUOT_SPACE_NOFAIL)) { spin_unlock(&dq_data_lock); goto out_flush_warn; } } for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + if (!dquots[cnt]) continue; if (reserve) - dquot_resv_space(inode->i_dquot[cnt], number); + dquot_resv_space(dquots[cnt], number); else - dquot_incr_space(inode->i_dquot[cnt], number); + dquot_incr_space(dquots[cnt], number); } inode_incr_space(inode, number, reserve); spin_unlock(&dq_data_lock); if (reserve) goto out_flush_warn; - mark_all_dquot_dirty(inode->i_dquot); + mark_all_dquot_dirty(dquots); out_flush_warn: - flush_warnings(inode->i_dquot, warntype); up_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + flush_warnings(warn); out: return ret; } @@ -1599,36 +1615,37 @@ EXPORT_SYMBOL(__dquot_alloc_space); int dquot_alloc_inode(const struct inode *inode) { int cnt, ret = 0; - char warntype[MAXQUOTAS]; + struct dquot_warn warn[MAXQUOTAS]; + struct dquot * const *dquots = inode->i_dquot; /* First test before acquiring mutex - solves deadlocks when we * re-enter the quota code and are already holding the mutex */ if (!dquot_active(inode)) return 0; for (cnt = 0; cnt < MAXQUOTAS; cnt++) - warntype[cnt] = QUOTA_NL_NOWARN; + warn[cnt].w_type = QUOTA_NL_NOWARN; down_read(&sb_dqopt(inode->i_sb)->dqptr_sem); spin_lock(&dq_data_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + if (!dquots[cnt]) continue; - ret = check_idq(inode->i_dquot[cnt], 1, warntype + cnt); + ret = check_idq(dquots[cnt], 1, &warn[cnt]); if (ret) goto warn_put_all; } for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + if (!dquots[cnt]) continue; - dquot_incr_inodes(inode->i_dquot[cnt], 1); + dquot_incr_inodes(dquots[cnt], 1); } warn_put_all: spin_unlock(&dq_data_lock); if (ret == 0) - mark_all_dquot_dirty(inode->i_dquot); - flush_warnings(inode->i_dquot, warntype); + mark_all_dquot_dirty(dquots); up_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + flush_warnings(warn); return ret; } EXPORT_SYMBOL(dquot_alloc_inode); @@ -1668,7 +1685,8 @@ EXPORT_SYMBOL(dquot_claim_space_nodirty); void __dquot_free_space(struct inode *inode, qsize_t number, int flags) { unsigned int cnt; - char warntype[MAXQUOTAS]; + struct dquot_warn warn[MAXQUOTAS]; + struct dquot **dquots = inode->i_dquot; int reserve = flags & DQUOT_SPACE_RESERVE; /* First test before acquiring mutex - solves deadlocks when we @@ -1681,23 +1699,28 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags) down_read(&sb_dqopt(inode->i_sb)->dqptr_sem); spin_lock(&dq_data_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + int wtype; + + warn[cnt].w_type = QUOTA_NL_NOWARN; + if (!dquots[cnt]) continue; - warntype[cnt] = info_bdq_free(inode->i_dquot[cnt], number); + wtype = info_bdq_free(dquots[cnt], number); + if (wtype != QUOTA_NL_NOWARN) + prepare_warning(&warn[cnt], dquots[cnt], wtype); if (reserve) - dquot_free_reserved_space(inode->i_dquot[cnt], number); + dquot_free_reserved_space(dquots[cnt], number); else - dquot_decr_space(inode->i_dquot[cnt], number); + dquot_decr_space(dquots[cnt], number); } inode_decr_space(inode, number, reserve); spin_unlock(&dq_data_lock); if (reserve) goto out_unlock; - mark_all_dquot_dirty(inode->i_dquot); + mark_all_dquot_dirty(dquots); out_unlock: - flush_warnings(inode->i_dquot, warntype); up_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + flush_warnings(warn); } EXPORT_SYMBOL(__dquot_free_space); @@ -1707,7 +1730,8 @@ EXPORT_SYMBOL(__dquot_free_space); void dquot_free_inode(const struct inode *inode) { unsigned int cnt; - char warntype[MAXQUOTAS]; + struct dquot_warn warn[MAXQUOTAS]; + struct dquot * const *dquots = inode->i_dquot; /* First test before acquiring mutex - solves deadlocks when we * re-enter the quota code and are already holding the mutex */ @@ -1717,15 +1741,20 @@ void dquot_free_inode(const struct inode *inode) down_read(&sb_dqopt(inode->i_sb)->dqptr_sem); spin_lock(&dq_data_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!inode->i_dquot[cnt]) + int wtype; + + warn[cnt].w_type = QUOTA_NL_NOWARN; + if (!dquots[cnt]) continue; - warntype[cnt] = info_idq_free(inode->i_dquot[cnt], 1); - dquot_decr_inodes(inode->i_dquot[cnt], 1); + wtype = info_idq_free(dquots[cnt], 1); + if (wtype != QUOTA_NL_NOWARN) + prepare_warning(&warn[cnt], dquots[cnt], wtype); + dquot_decr_inodes(dquots[cnt], 1); } spin_unlock(&dq_data_lock); - mark_all_dquot_dirty(inode->i_dquot); - flush_warnings(inode->i_dquot, warntype); + mark_all_dquot_dirty(dquots); up_read(&sb_dqopt(inode->i_sb)->dqptr_sem); + flush_warnings(warn); } EXPORT_SYMBOL(dquot_free_inode); @@ -1746,16 +1775,20 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) struct dquot *transfer_from[MAXQUOTAS] = {}; int cnt, ret = 0; char is_valid[MAXQUOTAS] = {}; - char warntype_to[MAXQUOTAS]; - char warntype_from_inodes[MAXQUOTAS], warntype_from_space[MAXQUOTAS]; + struct dquot_warn warn_to[MAXQUOTAS]; + struct dquot_warn warn_from_inodes[MAXQUOTAS]; + struct dquot_warn warn_from_space[MAXQUOTAS]; /* First test before acquiring mutex - solves deadlocks when we * re-enter the quota code and are already holding the mutex */ if (IS_NOQUOTA(inode)) return 0; /* Initialize the arrays */ - for (cnt = 0; cnt < MAXQUOTAS; cnt++) - warntype_to[cnt] = QUOTA_NL_NOWARN; + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { + warn_to[cnt].w_type = QUOTA_NL_NOWARN; + warn_from_inodes[cnt].w_type = QUOTA_NL_NOWARN; + warn_from_space[cnt].w_type = QUOTA_NL_NOWARN; + } down_write(&sb_dqopt(inode->i_sb)->dqptr_sem); if (IS_NOQUOTA(inode)) { /* File without quota accounting? */ up_write(&sb_dqopt(inode->i_sb)->dqptr_sem); @@ -1777,10 +1810,10 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) continue; is_valid[cnt] = 1; transfer_from[cnt] = inode->i_dquot[cnt]; - ret = check_idq(transfer_to[cnt], 1, warntype_to + cnt); + ret = check_idq(transfer_to[cnt], 1, &warn_to[cnt]); if (ret) goto over_quota; - ret = check_bdq(transfer_to[cnt], space, 0, warntype_to + cnt); + ret = check_bdq(transfer_to[cnt], space, 0, &warn_to[cnt]); if (ret) goto over_quota; } @@ -1793,10 +1826,15 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) continue; /* Due to IO error we might not have transfer_from[] structure */ if (transfer_from[cnt]) { - warntype_from_inodes[cnt] = - info_idq_free(transfer_from[cnt], 1); - warntype_from_space[cnt] = - info_bdq_free(transfer_from[cnt], space); + int wtype; + wtype = info_idq_free(transfer_from[cnt], 1); + if (wtype != QUOTA_NL_NOWARN) + prepare_warning(&warn_from_inodes[cnt], + transfer_from[cnt], wtype); + wtype = info_bdq_free(transfer_from[cnt], space); + if (wtype != QUOTA_NL_NOWARN) + prepare_warning(&warn_from_space[cnt], + transfer_from[cnt], wtype); dquot_decr_inodes(transfer_from[cnt], 1); dquot_decr_space(transfer_from[cnt], cur_space); dquot_free_reserved_space(transfer_from[cnt], @@ -1814,9 +1852,9 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) mark_all_dquot_dirty(transfer_from); mark_all_dquot_dirty(transfer_to); - flush_warnings(transfer_to, warntype_to); - flush_warnings(transfer_from, warntype_from_inodes); - flush_warnings(transfer_from, warntype_from_space); + flush_warnings(warn_to); + flush_warnings(warn_from_inodes); + flush_warnings(warn_from_space); /* Pass back references to put */ for (cnt = 0; cnt < MAXQUOTAS; cnt++) if (is_valid[cnt]) @@ -1825,7 +1863,7 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) over_quota: spin_unlock(&dq_data_lock); up_write(&sb_dqopt(inode->i_sb)->dqptr_sem); - flush_warnings(transfer_to, warntype_to); + flush_warnings(warn_to); return ret; } EXPORT_SYMBOL(__dquot_transfer); @@ -2125,6 +2163,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id, mutex_unlock(&dqopt->dqio_mutex); goto out_file_init; } + if (dqopt->flags & DQUOT_QUOTA_SYS_FILE) + dqopt->info[type].dqi_flags |= DQF_SYS_FILE; mutex_unlock(&dqopt->dqio_mutex); spin_lock(&dq_state_lock); dqopt->flags |= dquot_state_flag(flags, type); @@ -2464,7 +2504,7 @@ int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii) spin_lock(&dq_data_lock); ii->dqi_bgrace = mi->dqi_bgrace; ii->dqi_igrace = mi->dqi_igrace; - ii->dqi_flags = mi->dqi_flags & DQF_MASK; + ii->dqi_flags = mi->dqi_flags & DQF_GETINFO_MASK; ii->dqi_valid = IIF_ALL; spin_unlock(&dq_data_lock); mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex); @@ -2490,8 +2530,8 @@ int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii) if (ii->dqi_valid & IIF_IGRACE) mi->dqi_igrace = ii->dqi_igrace; if (ii->dqi_valid & IIF_FLAGS) - mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) | - (ii->dqi_flags & DQF_MASK); + mi->dqi_flags = (mi->dqi_flags & ~DQF_SETINFO_MASK) | + (ii->dqi_flags & DQF_SETINFO_MASK); spin_unlock(&dq_data_lock); mark_info_dirty(sb, type); /* Force write to disk */ diff --git a/fs/quota/quota.c b/fs/quota/quota.c index 7a9bedeb1d5..9a391204ca2 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -291,11 +291,26 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, } } +/* Return 1 if 'cmd' will block on frozen filesystem */ +static int quotactl_cmd_write(int cmd) +{ + switch (cmd) { + case Q_GETFMT: + case Q_GETINFO: + case Q_SYNC: + case Q_XGETQSTAT: + case Q_XGETQUOTA: + case Q_XQUOTASYNC: + return 0; + } + return 1; +} + /* * look up a superblock on which quota ops will be performed * - use the name of a block device to find the superblock thereon */ -static struct super_block *quotactl_block(const char __user *special) +static struct super_block *quotactl_block(const char __user *special, int cmd) { #ifdef CONFIG_BLOCK struct block_device *bdev; @@ -308,7 +323,10 @@ static struct super_block *quotactl_block(const char __user *special) putname(tmp); if (IS_ERR(bdev)) return ERR_CAST(bdev); - sb = get_super(bdev); + if (quotactl_cmd_write(cmd)) + sb = get_super_thawed(bdev); + else + sb = get_super(bdev); bdput(bdev); if (!sb) return ERR_PTR(-ENODEV); @@ -360,7 +378,7 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special, pathp = &path; } - sb = quotactl_block(special); + sb = quotactl_block(special, cmds); if (IS_ERR(sb)) { ret = PTR_ERR(sb); goto out; diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index aec766abe3a..a1fdabe21de 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -209,22 +209,19 @@ static int ramfs_parse_options(char *data, struct ramfs_mount_opts *opts) int ramfs_fill_super(struct super_block *sb, void *data, int silent) { struct ramfs_fs_info *fsi; - struct inode *inode = NULL; - struct dentry *root; + struct inode *inode; int err; save_mount_options(sb, data); fsi = kzalloc(sizeof(struct ramfs_fs_info), GFP_KERNEL); sb->s_fs_info = fsi; - if (!fsi) { - err = -ENOMEM; - goto fail; - } + if (!fsi) + return -ENOMEM; err = ramfs_parse_options(data, &fsi->mount_opts); if (err) - goto fail; + return err; sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_CACHE_SIZE; @@ -234,24 +231,11 @@ int ramfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_time_gran = 1; inode = ramfs_get_inode(sb, NULL, S_IFDIR | fsi->mount_opts.mode, 0); - if (!inode) { - err = -ENOMEM; - goto fail; - } - - root = d_alloc_root(inode); - sb->s_root = root; - if (!root) { - err = -ENOMEM; - goto fail; - } + sb->s_root = d_make_root(inode); + if (!sb->s_root) + return -ENOMEM; return 0; -fail: - kfree(fsi); - sb->s_fs_info = NULL; - iput(inode); - return err; } struct dentry *ramfs_mount(struct file_system_type *fs_type, diff --git a/fs/read_write.c b/fs/read_write.c index 5ad4248b0cd..ffc99d22e0a 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -11,7 +11,7 @@ #include <linux/uio.h> #include <linux/fsnotify.h> #include <linux/security.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/syscalls.h> #include <linux/pagemap.h> #include <linux/splice.h> diff --git a/fs/readdir.c b/fs/readdir.c index 356f71528ad..cc0a8227cdd 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -6,7 +6,7 @@ #include <linux/stddef.h> #include <linux/kernel.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/time.h> #include <linux/mm.h> #include <linux/errno.h> diff --git a/fs/reiserfs/acl.h b/fs/reiserfs/acl.h new file mode 100644 index 00000000000..f096b80e73d --- /dev/null +++ b/fs/reiserfs/acl.h @@ -0,0 +1,76 @@ +#include <linux/init.h> +#include <linux/posix_acl.h> + +#define REISERFS_ACL_VERSION 0x0001 + +typedef struct { + __le16 e_tag; + __le16 e_perm; + __le32 e_id; +} reiserfs_acl_entry; + +typedef struct { + __le16 e_tag; + __le16 e_perm; +} reiserfs_acl_entry_short; + +typedef struct { + __le32 a_version; +} reiserfs_acl_header; + +static inline size_t reiserfs_acl_size(int count) +{ + if (count <= 4) { + return sizeof(reiserfs_acl_header) + + count * sizeof(reiserfs_acl_entry_short); + } else { + return sizeof(reiserfs_acl_header) + + 4 * sizeof(reiserfs_acl_entry_short) + + (count - 4) * sizeof(reiserfs_acl_entry); + } +} + +static inline int reiserfs_acl_count(size_t size) +{ + ssize_t s; + size -= sizeof(reiserfs_acl_header); + s = size - 4 * sizeof(reiserfs_acl_entry_short); + if (s < 0) { + if (size % sizeof(reiserfs_acl_entry_short)) + return -1; + return size / sizeof(reiserfs_acl_entry_short); + } else { + if (s % sizeof(reiserfs_acl_entry)) + return -1; + return s / sizeof(reiserfs_acl_entry) + 4; + } +} + +#ifdef CONFIG_REISERFS_FS_POSIX_ACL +struct posix_acl *reiserfs_get_acl(struct inode *inode, int type); +int reiserfs_acl_chmod(struct inode *inode); +int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, + struct inode *dir, struct dentry *dentry, + struct inode *inode); +int reiserfs_cache_default_acl(struct inode *dir); +extern const struct xattr_handler reiserfs_posix_acl_default_handler; +extern const struct xattr_handler reiserfs_posix_acl_access_handler; + +#else + +#define reiserfs_cache_default_acl(inode) 0 +#define reiserfs_get_acl NULL + +static inline int reiserfs_acl_chmod(struct inode *inode) +{ + return 0; +} + +static inline int +reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, + const struct inode *dir, struct dentry *dentry, + struct inode *inode) +{ + return 0; +} +#endif diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c index 70de42f09f1..4c0c7d163d1 100644 --- a/fs/reiserfs/bitmap.c +++ b/fs/reiserfs/bitmap.c @@ -4,14 +4,12 @@ /* Reiserfs block (de)allocator, bitmap-based. */ #include <linux/time.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/errno.h> #include <linux/buffer_head.h> #include <linux/kernel.h> #include <linux/pagemap.h> #include <linux/vmalloc.h> -#include <linux/reiserfs_fs_sb.h> -#include <linux/reiserfs_fs_i.h> #include <linux/quotaops.h> #include <linux/seq_file.h> diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c index 133e9355dc6..66c53b642a8 100644 --- a/fs/reiserfs/dir.c +++ b/fs/reiserfs/dir.c @@ -5,7 +5,7 @@ #include <linux/string.h> #include <linux/errno.h> #include <linux/fs.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/stat.h> #include <linux/buffer_head.h> #include <linux/slab.h> diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c index 60c08044066..2b7882b508d 100644 --- a/fs/reiserfs/do_balan.c +++ b/fs/reiserfs/do_balan.c @@ -17,7 +17,7 @@ #include <asm/uaccess.h> #include <linux/time.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/buffer_head.h> #include <linux/kernel.h> diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index ace635053a3..8375c922c0d 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -3,9 +3,9 @@ */ #include <linux/time.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_acl.h> -#include <linux/reiserfs_xattr.h> +#include "reiserfs.h" +#include "acl.h" +#include "xattr.h" #include <asm/uaccess.h> #include <linux/pagemap.h> #include <linux/swap.h> diff --git a/fs/reiserfs/fix_node.c b/fs/reiserfs/fix_node.c index 1e4250bc3a6..430e0658704 100644 --- a/fs/reiserfs/fix_node.c +++ b/fs/reiserfs/fix_node.c @@ -37,7 +37,7 @@ #include <linux/time.h> #include <linux/slab.h> #include <linux/string.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/buffer_head.h> /* To make any changes in the tree we find a node, that contains item diff --git a/fs/reiserfs/hashes.c b/fs/reiserfs/hashes.c index 6471c670743..91b0cc1242a 100644 --- a/fs/reiserfs/hashes.c +++ b/fs/reiserfs/hashes.c @@ -19,7 +19,7 @@ // #include <linux/kernel.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <asm/types.h> #define DELTA 0x9E3779B9 diff --git a/fs/reiserfs/ibalance.c b/fs/reiserfs/ibalance.c index 2074fd95046..e1978fd895f 100644 --- a/fs/reiserfs/ibalance.c +++ b/fs/reiserfs/ibalance.c @@ -5,7 +5,7 @@ #include <asm/uaccess.h> #include <linux/string.h> #include <linux/time.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/buffer_head.h> /* this is one and only function that is used outside (do_balance.c) */ diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 9e8cd5acd79..494c315c741 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -4,9 +4,9 @@ #include <linux/time.h> #include <linux/fs.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_acl.h> -#include <linux/reiserfs_xattr.h> +#include "reiserfs.h" +#include "acl.h" +#include "xattr.h" #include <linux/exportfs.h> #include <linux/pagemap.h> #include <linux/highmem.h> diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c index 950e3d1b5c9..0c2185042d5 100644 --- a/fs/reiserfs/ioctl.c +++ b/fs/reiserfs/ioctl.c @@ -5,7 +5,7 @@ #include <linux/capability.h> #include <linux/fs.h> #include <linux/mount.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/time.h> #include <asm/uaccess.h> #include <linux/pagemap.h> diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c index 72cb1cc51b8..ee382ef3d30 100644 --- a/fs/reiserfs/item_ops.c +++ b/fs/reiserfs/item_ops.c @@ -3,7 +3,7 @@ */ #include <linux/time.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" // this contains item handlers for old item types: sd, direct, // indirect, directory diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index c3cf54fd4de..cf9f4de00a9 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -37,7 +37,7 @@ #include <linux/time.h> #include <linux/semaphore.h> #include <linux/vmalloc.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/kernel.h> #include <linux/errno.h> #include <linux/fcntl.h> diff --git a/fs/reiserfs/lbalance.c b/fs/reiserfs/lbalance.c index 03d85cbf90b..79e5a8b4c22 100644 --- a/fs/reiserfs/lbalance.c +++ b/fs/reiserfs/lbalance.c @@ -5,7 +5,7 @@ #include <asm/uaccess.h> #include <linux/string.h> #include <linux/time.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/buffer_head.h> /* these are used in do_balance.c */ @@ -975,7 +975,7 @@ static int leaf_cut_entries(struct buffer_head *bh, remove */ RFALSE(!is_direntry_le_ih(ih), "10180: item is not directory item"); RFALSE(I_ENTRY_COUNT(ih) < from + del_count, - "10185: item contains not enough entries: entry_cout = %d, from = %d, to delete = %d", + "10185: item contains not enough entries: entry_count = %d, from = %d, to delete = %d", I_ENTRY_COUNT(ih), from, del_count); if (del_count == 0) diff --git a/fs/reiserfs/lock.c b/fs/reiserfs/lock.c index 7df1ce48203..d735bc8470e 100644 --- a/fs/reiserfs/lock.c +++ b/fs/reiserfs/lock.c @@ -1,4 +1,4 @@ -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/mutex.h> /* diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 14637886523..84e8a69cee9 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -14,9 +14,9 @@ #include <linux/time.h> #include <linux/bitops.h> #include <linux/slab.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_acl.h> -#include <linux/reiserfs_xattr.h> +#include "reiserfs.h" +#include "acl.h" +#include "xattr.h" #include <linux/quotaops.h> #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) set_nlink(i, 1); } diff --git a/fs/reiserfs/objectid.c b/fs/reiserfs/objectid.c index 3a6de810bd6..f732d6a5251 100644 --- a/fs/reiserfs/objectid.c +++ b/fs/reiserfs/objectid.c @@ -5,8 +5,7 @@ #include <linux/string.h> #include <linux/random.h> #include <linux/time.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_fs_sb.h> +#include "reiserfs.h" // find where objectid map starts #define objectid_map(s,rs) (old_format_only (s) ? \ diff --git a/fs/reiserfs/prints.c b/fs/reiserfs/prints.c index 45de98b5946..c0b1112ab7e 100644 --- a/fs/reiserfs/prints.c +++ b/fs/reiserfs/prints.c @@ -4,7 +4,7 @@ #include <linux/time.h> #include <linux/fs.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/string.h> #include <linux/buffer_head.h> @@ -329,7 +329,7 @@ void reiserfs_debug(struct super_block *s, int level, const char *fmt, ...) Numbering scheme for panic used by Vladimir and Anatoly( Hans completely ignores this scheme, and considers it pointless complexity): - panics in reiserfs_fs.h have numbers from 1000 to 1999 + panics in reiserfs.h have numbers from 1000 to 1999 super.c 2000 to 2999 preserve.c (unused) 3000 to 3999 bitmap.c 4000 to 4999 diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c index 7a9981196c1..2c1ade692cc 100644 --- a/fs/reiserfs/procfs.c +++ b/fs/reiserfs/procfs.c @@ -12,8 +12,7 @@ #include <linux/time.h> #include <linux/seq_file.h> #include <asm/uaccess.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_fs_sb.h> +#include "reiserfs.h" #include <linux/init.h> #include <linux/proc_fs.h> diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h new file mode 100644 index 00000000000..a59d2712633 --- /dev/null +++ b/fs/reiserfs/reiserfs.h @@ -0,0 +1,2923 @@ +/* + * Copyright 1996, 1997, 1998 Hans Reiser, see reiserfs/README for licensing and copyright details + */ + +#include <linux/reiserfs_fs.h> + +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/bug.h> +#include <linux/workqueue.h> +#include <asm/unaligned.h> +#include <linux/bitops.h> +#include <linux/proc_fs.h> +#include <linux/buffer_head.h> + +/* the 32 bit compat definitions with int argument */ +#define REISERFS_IOC32_UNPACK _IOW(0xCD, 1, int) +#define REISERFS_IOC32_GETFLAGS FS_IOC32_GETFLAGS +#define REISERFS_IOC32_SETFLAGS FS_IOC32_SETFLAGS +#define REISERFS_IOC32_GETVERSION FS_IOC32_GETVERSION +#define REISERFS_IOC32_SETVERSION FS_IOC32_SETVERSION + +struct reiserfs_journal_list; + +/** bitmasks for i_flags field in reiserfs-specific part of inode */ +typedef enum { + /** this says what format of key do all items (but stat data) of + an object have. If this is set, that format is 3.6 otherwise + - 3.5 */ + i_item_key_version_mask = 0x0001, + /** If this is unset, object has 3.5 stat data, otherwise, it has + 3.6 stat data with 64bit size, 32bit nlink etc. */ + i_stat_data_version_mask = 0x0002, + /** file might need tail packing on close */ + i_pack_on_close_mask = 0x0004, + /** don't pack tail of file */ + i_nopack_mask = 0x0008, + /** If those is set, "safe link" was created for this file during + truncate or unlink. Safe link is used to avoid leakage of disk + space on crash with some files open, but unlinked. */ + i_link_saved_unlink_mask = 0x0010, + i_link_saved_truncate_mask = 0x0020, + i_has_xattr_dir = 0x0040, + i_data_log = 0x0080, +} reiserfs_inode_flags; + +struct reiserfs_inode_info { + __u32 i_key[4]; /* key is still 4 32 bit integers */ + /** transient inode flags that are never stored on disk. Bitmasks + for this field are defined above. */ + __u32 i_flags; + + __u32 i_first_direct_byte; // offset of first byte stored in direct item. + + /* copy of persistent inode flags read from sd_attrs. */ + __u32 i_attrs; + + int i_prealloc_block; /* first unused block of a sequence of unused blocks */ + int i_prealloc_count; /* length of that sequence */ + struct list_head i_prealloc_list; /* per-transaction list of inodes which + * have preallocated blocks */ + + unsigned new_packing_locality:1; /* new_packig_locality is created; new blocks + * for the contents of this directory should be + * displaced */ + + /* we use these for fsync or O_SYNC to decide which transaction + ** needs to be committed in order for this inode to be properly + ** flushed */ + unsigned int i_trans_id; + struct reiserfs_journal_list *i_jl; + atomic_t openers; + struct mutex tailpack; +#ifdef CONFIG_REISERFS_FS_XATTR + struct rw_semaphore i_xattr_sem; +#endif + struct inode vfs_inode; +}; + +typedef enum { + reiserfs_attrs_cleared = 0x00000001, +} reiserfs_super_block_flags; + +/* struct reiserfs_super_block accessors/mutators + * since this is a disk structure, it will always be in + * little endian format. */ +#define sb_block_count(sbp) (le32_to_cpu((sbp)->s_v1.s_block_count)) +#define set_sb_block_count(sbp,v) ((sbp)->s_v1.s_block_count = cpu_to_le32(v)) +#define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_v1.s_free_blocks)) +#define set_sb_free_blocks(sbp,v) ((sbp)->s_v1.s_free_blocks = cpu_to_le32(v)) +#define sb_root_block(sbp) (le32_to_cpu((sbp)->s_v1.s_root_block)) +#define set_sb_root_block(sbp,v) ((sbp)->s_v1.s_root_block = cpu_to_le32(v)) + +#define sb_jp_journal_1st_block(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_1st_block)) +#define set_sb_jp_journal_1st_block(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_1st_block = cpu_to_le32(v)) +#define sb_jp_journal_dev(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_dev)) +#define set_sb_jp_journal_dev(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_dev = cpu_to_le32(v)) +#define sb_jp_journal_size(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_size)) +#define set_sb_jp_journal_size(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_size = cpu_to_le32(v)) +#define sb_jp_journal_trans_max(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_trans_max)) +#define set_sb_jp_journal_trans_max(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_trans_max = cpu_to_le32(v)) +#define sb_jp_journal_magic(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_magic)) +#define set_sb_jp_journal_magic(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_magic = cpu_to_le32(v)) +#define sb_jp_journal_max_batch(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_batch)) +#define set_sb_jp_journal_max_batch(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_max_batch = cpu_to_le32(v)) +#define sb_jp_jourmal_max_commit_age(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_commit_age)) +#define set_sb_jp_journal_max_commit_age(sbp,v) \ + ((sbp)->s_v1.s_journal.jp_journal_max_commit_age = cpu_to_le32(v)) + +#define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_v1.s_blocksize)) +#define set_sb_blocksize(sbp,v) ((sbp)->s_v1.s_blocksize = cpu_to_le16(v)) +#define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_maxsize)) +#define set_sb_oid_maxsize(sbp,v) ((sbp)->s_v1.s_oid_maxsize = cpu_to_le16(v)) +#define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_cursize)) +#define set_sb_oid_cursize(sbp,v) ((sbp)->s_v1.s_oid_cursize = cpu_to_le16(v)) +#define sb_umount_state(sbp) (le16_to_cpu((sbp)->s_v1.s_umount_state)) +#define set_sb_umount_state(sbp,v) ((sbp)->s_v1.s_umount_state = cpu_to_le16(v)) +#define sb_fs_state(sbp) (le16_to_cpu((sbp)->s_v1.s_fs_state)) +#define set_sb_fs_state(sbp,v) ((sbp)->s_v1.s_fs_state = cpu_to_le16(v)) +#define sb_hash_function_code(sbp) \ + (le32_to_cpu((sbp)->s_v1.s_hash_function_code)) +#define set_sb_hash_function_code(sbp,v) \ + ((sbp)->s_v1.s_hash_function_code = cpu_to_le32(v)) +#define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_v1.s_tree_height)) +#define set_sb_tree_height(sbp,v) ((sbp)->s_v1.s_tree_height = cpu_to_le16(v)) +#define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_v1.s_bmap_nr)) +#define set_sb_bmap_nr(sbp,v) ((sbp)->s_v1.s_bmap_nr = cpu_to_le16(v)) +#define sb_version(sbp) (le16_to_cpu((sbp)->s_v1.s_version)) +#define set_sb_version(sbp,v) ((sbp)->s_v1.s_version = cpu_to_le16(v)) + +#define sb_mnt_count(sbp) (le16_to_cpu((sbp)->s_mnt_count)) +#define set_sb_mnt_count(sbp, v) ((sbp)->s_mnt_count = cpu_to_le16(v)) + +#define sb_reserved_for_journal(sbp) \ + (le16_to_cpu((sbp)->s_v1.s_reserved_for_journal)) +#define set_sb_reserved_for_journal(sbp,v) \ + ((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v)) + +/* LOGGING -- */ + +/* These all interelate for performance. +** +** If the journal block count is smaller than n transactions, you lose speed. +** I don't know what n is yet, I'm guessing 8-16. +** +** typical transaction size depends on the application, how often fsync is +** called, and how many metadata blocks you dirty in a 30 second period. +** The more small files (<16k) you use, the larger your transactions will +** be. +** +** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal +** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough +** to prevent wrapping before dirty meta blocks get to disk. +** +** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal +** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping. +** +** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash. +** +*/ + +/* don't mess with these for a while */ + /* we have a node size define somewhere in reiserfs_fs.h. -Hans */ +#define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */ +#define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */ +#define JOURNAL_HASH_SIZE 8192 +#define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */ + +/* One of these for every block in every transaction +** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a +** hash of all the in memory transactions. +** next and prev are used by the current transaction (journal_hash). +** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash +** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging +** to a given transaction. +*/ +struct reiserfs_journal_cnode { + struct buffer_head *bh; /* real buffer head */ + struct super_block *sb; /* dev of real buffer head */ + __u32 blocknr; /* block number of real buffer head, == 0 when buffer on disk */ + unsigned long state; + struct reiserfs_journal_list *jlist; /* journal list this cnode lives in */ + struct reiserfs_journal_cnode *next; /* next in transaction list */ + struct reiserfs_journal_cnode *prev; /* prev in transaction list */ + struct reiserfs_journal_cnode *hprev; /* prev in hash list */ + struct reiserfs_journal_cnode *hnext; /* next in hash list */ +}; + +struct reiserfs_bitmap_node { + int id; + char *data; + struct list_head list; +}; + +struct reiserfs_list_bitmap { + struct reiserfs_journal_list *journal_list; + struct reiserfs_bitmap_node **bitmaps; +}; + +/* +** one of these for each transaction. The most important part here is the j_realblock. +** this list of cnodes is used to hash all the blocks in all the commits, to mark all the +** real buffer heads dirty once all the commits hit the disk, +** and to make sure every real block in a transaction is on disk before allowing the log area +** to be overwritten */ +struct reiserfs_journal_list { + unsigned long j_start; + unsigned long j_state; + unsigned long j_len; + atomic_t j_nonzerolen; + atomic_t j_commit_left; + atomic_t j_older_commits_done; /* all commits older than this on disk */ + struct mutex j_commit_mutex; + unsigned int j_trans_id; + time_t j_timestamp; + struct reiserfs_list_bitmap *j_list_bitmap; + struct buffer_head *j_commit_bh; /* commit buffer head */ + struct reiserfs_journal_cnode *j_realblock; + struct reiserfs_journal_cnode *j_freedlist; /* list of buffers that were freed during this trans. free each of these on flush */ + /* time ordered list of all active transactions */ + struct list_head j_list; + + /* time ordered list of all transactions we haven't tried to flush yet */ + struct list_head j_working_list; + + /* list of tail conversion targets in need of flush before commit */ + struct list_head j_tail_bh_list; + /* list of data=ordered buffers in need of flush before commit */ + struct list_head j_bh_list; + int j_refcount; +}; + +struct reiserfs_journal { + struct buffer_head **j_ap_blocks; /* journal blocks on disk */ + struct reiserfs_journal_cnode *j_last; /* newest journal block */ + struct reiserfs_journal_cnode *j_first; /* oldest journal block. start here for traverse */ + + struct block_device *j_dev_bd; + fmode_t j_dev_mode; + int j_1st_reserved_block; /* first block on s_dev of reserved area journal */ + + unsigned long j_state; + unsigned int j_trans_id; + unsigned long j_mount_id; + unsigned long j_start; /* start of current waiting commit (index into j_ap_blocks) */ + unsigned long j_len; /* length of current waiting commit */ + unsigned long j_len_alloc; /* number of buffers requested by journal_begin() */ + atomic_t j_wcount; /* count of writers for current commit */ + unsigned long j_bcount; /* batch count. allows turning X transactions into 1 */ + unsigned long j_first_unflushed_offset; /* first unflushed transactions offset */ + unsigned j_last_flush_trans_id; /* last fully flushed journal timestamp */ + struct buffer_head *j_header_bh; + + time_t j_trans_start_time; /* time this transaction started */ + struct mutex j_mutex; + struct mutex j_flush_mutex; + wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */ + atomic_t j_jlock; /* lock for j_join_wait */ + int j_list_bitmap_index; /* number of next list bitmap to use */ + int j_must_wait; /* no more journal begins allowed. MUST sleep on j_join_wait */ + int j_next_full_flush; /* next journal_end will flush all journal list */ + int j_next_async_flush; /* next journal_end will flush all async commits */ + + int j_cnode_used; /* number of cnodes on the used list */ + int j_cnode_free; /* number of cnodes on the free list */ + + unsigned int j_trans_max; /* max number of blocks in a transaction. */ + unsigned int j_max_batch; /* max number of blocks to batch into a trans */ + unsigned int j_max_commit_age; /* in seconds, how old can an async commit be */ + unsigned int j_max_trans_age; /* in seconds, how old can a transaction be */ + unsigned int j_default_max_commit_age; /* the default for the max commit age */ + + struct reiserfs_journal_cnode *j_cnode_free_list; + struct reiserfs_journal_cnode *j_cnode_free_orig; /* orig pointer returned from vmalloc */ + + struct reiserfs_journal_list *j_current_jl; + int j_free_bitmap_nodes; + int j_used_bitmap_nodes; + + int j_num_lists; /* total number of active transactions */ + int j_num_work_lists; /* number that need attention from kreiserfsd */ + + /* debugging to make sure things are flushed in order */ + unsigned int j_last_flush_id; + + /* debugging to make sure things are committed in order */ + unsigned int j_last_commit_id; + + struct list_head j_bitmap_nodes; + struct list_head j_dirty_buffers; + spinlock_t j_dirty_buffers_lock; /* protects j_dirty_buffers */ + + /* list of all active transactions */ + struct list_head j_journal_list; + /* lists that haven't been touched by writeback attempts */ + struct list_head j_working_list; + + struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS]; /* array of bitmaps to record the deleted blocks */ + struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE]; /* hash table for real buffer heads in current trans */ + struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE]; /* hash table for all the real buffer heads in all + the transactions */ + struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */ + int j_persistent_trans; + unsigned long j_max_trans_size; + unsigned long j_max_batch_size; + + int j_errno; + + /* when flushing ordered buffers, throttle new ordered writers */ + struct delayed_work j_work; + struct super_block *j_work_sb; + atomic_t j_async_throttle; +}; + +enum journal_state_bits { + J_WRITERS_BLOCKED = 1, /* set when new writers not allowed */ + J_WRITERS_QUEUED, /* set when log is full due to too many writers */ + J_ABORTED, /* set when log is aborted */ +}; + +#define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */ + +typedef __u32(*hashf_t) (const signed char *, int); + +struct reiserfs_bitmap_info { + __u32 free_count; +}; + +struct proc_dir_entry; + +#if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO ) +typedef unsigned long int stat_cnt_t; +typedef struct reiserfs_proc_info_data { + spinlock_t lock; + int exiting; + int max_hash_collisions; + + stat_cnt_t breads; + stat_cnt_t bread_miss; + stat_cnt_t search_by_key; + stat_cnt_t search_by_key_fs_changed; + stat_cnt_t search_by_key_restarted; + + stat_cnt_t insert_item_restarted; + stat_cnt_t paste_into_item_restarted; + stat_cnt_t cut_from_item_restarted; + stat_cnt_t delete_solid_item_restarted; + stat_cnt_t delete_item_restarted; + + stat_cnt_t leaked_oid; + stat_cnt_t leaves_removable; + + /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */ + stat_cnt_t balance_at[5]; /* XXX */ + /* sbk == search_by_key */ + stat_cnt_t sbk_read_at[5]; /* XXX */ + stat_cnt_t sbk_fs_changed[5]; + stat_cnt_t sbk_restarted[5]; + stat_cnt_t items_at[5]; /* XXX */ + stat_cnt_t free_at[5]; /* XXX */ + stat_cnt_t can_node_be_removed[5]; /* XXX */ + long int lnum[5]; /* XXX */ + long int rnum[5]; /* XXX */ + long int lbytes[5]; /* XXX */ + long int rbytes[5]; /* XXX */ + stat_cnt_t get_neighbors[5]; + stat_cnt_t get_neighbors_restart[5]; + stat_cnt_t need_l_neighbor[5]; + stat_cnt_t need_r_neighbor[5]; + + stat_cnt_t free_block; + struct __scan_bitmap_stats { + stat_cnt_t call; + stat_cnt_t wait; + stat_cnt_t bmap; + stat_cnt_t retry; + stat_cnt_t in_journal_hint; + stat_cnt_t in_journal_nohint; + stat_cnt_t stolen; + } scan_bitmap; + struct __journal_stats { + stat_cnt_t in_journal; + stat_cnt_t in_journal_bitmap; + stat_cnt_t in_journal_reusable; + stat_cnt_t lock_journal; + stat_cnt_t lock_journal_wait; + stat_cnt_t journal_being; + stat_cnt_t journal_relock_writers; + stat_cnt_t journal_relock_wcount; + stat_cnt_t mark_dirty; + stat_cnt_t mark_dirty_already; + stat_cnt_t mark_dirty_notjournal; + stat_cnt_t restore_prepared; + stat_cnt_t prepare; + stat_cnt_t prepare_retry; + } journal; +} reiserfs_proc_info_data_t; +#else +typedef struct reiserfs_proc_info_data { +} reiserfs_proc_info_data_t; +#endif + +/* reiserfs union of in-core super block data */ +struct reiserfs_sb_info { + struct buffer_head *s_sbh; /* Buffer containing the super block */ + /* both the comment and the choice of + name are unclear for s_rs -Hans */ + struct reiserfs_super_block *s_rs; /* Pointer to the super block in the buffer */ + struct reiserfs_bitmap_info *s_ap_bitmap; + struct reiserfs_journal *s_journal; /* pointer to journal information */ + unsigned short s_mount_state; /* reiserfs state (valid, invalid) */ + + /* Serialize writers access, replace the old bkl */ + struct mutex lock; + /* Owner of the lock (can be recursive) */ + struct task_struct *lock_owner; + /* Depth of the lock, start from -1 like the bkl */ + int lock_depth; + + /* Comment? -Hans */ + void (*end_io_handler) (struct buffer_head *, int); + hashf_t s_hash_function; /* pointer to function which is used + to sort names in directory. Set on + mount */ + unsigned long s_mount_opt; /* reiserfs's mount options are set + here (currently - NOTAIL, NOLOG, + REPLAYONLY) */ + + struct { /* This is a structure that describes block allocator options */ + unsigned long bits; /* Bitfield for enable/disable kind of options */ + unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */ + int border; /* percentage of disk, border takes */ + int preallocmin; /* Minimal file size (in blocks) starting from which we do preallocations */ + int preallocsize; /* Number of blocks we try to prealloc when file + reaches preallocmin size (in blocks) or + prealloc_list is empty. */ + } s_alloc_options; + + /* Comment? -Hans */ + wait_queue_head_t s_wait; + /* To be obsoleted soon by per buffer seals.. -Hans */ + atomic_t s_generation_counter; // increased by one every time the + // tree gets re-balanced + unsigned long s_properties; /* File system properties. Currently holds + on-disk FS format */ + + /* session statistics */ + int s_disk_reads; + int s_disk_writes; + int s_fix_nodes; + int s_do_balance; + int s_unneeded_left_neighbor; + int s_good_search_by_key_reada; + int s_bmaps; + int s_bmaps_without_search; + int s_direct2indirect; + int s_indirect2direct; + /* set up when it's ok for reiserfs_read_inode2() to read from + disk inode with nlink==0. Currently this is only used during + finish_unfinished() processing at mount time */ + int s_is_unlinked_ok; + reiserfs_proc_info_data_t s_proc_info_data; + struct proc_dir_entry *procdir; + int reserved_blocks; /* amount of blocks reserved for further allocations */ + spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */ + struct dentry *priv_root; /* root of /.reiserfs_priv */ + struct dentry *xattr_root; /* root of /.reiserfs_priv/xattrs */ + int j_errno; +#ifdef CONFIG_QUOTA + char *s_qf_names[MAXQUOTAS]; + int s_jquota_fmt; +#endif + char *s_jdev; /* Stored jdev for mount option showing */ +#ifdef CONFIG_REISERFS_CHECK + + struct tree_balance *cur_tb; /* + * Detects whether more than one + * copy of tb exists per superblock + * as a means of checking whether + * do_balance is executing concurrently + * against another tree reader/writer + * on a same mount point. + */ +#endif +}; + +/* Definitions of reiserfs on-disk properties: */ +#define REISERFS_3_5 0 +#define REISERFS_3_6 1 +#define REISERFS_OLD_FORMAT 2 + +enum reiserfs_mount_options { +/* Mount options */ + REISERFS_LARGETAIL, /* large tails will be created in a session */ + REISERFS_SMALLTAIL, /* small (for files less than block size) tails will be created in a session */ + REPLAYONLY, /* replay journal and return 0. Use by fsck */ + REISERFS_CONVERT, /* -o conv: causes conversion of old + format super block to the new + format. If not specified - old + partition will be dealt with in a + manner of 3.5.x */ + +/* -o hash={tea, rupasov, r5, detect} is meant for properly mounting +** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option +** is not required. If the normal autodection code can't determine which +** hash to use (because both hashes had the same value for a file) +** use this option to force a specific hash. It won't allow you to override +** the existing hash on the FS, so if you have a tea hash disk, and mount +** with -o hash=rupasov, the mount will fail. +*/ + FORCE_TEA_HASH, /* try to force tea hash on mount */ + FORCE_RUPASOV_HASH, /* try to force rupasov hash on mount */ + FORCE_R5_HASH, /* try to force rupasov hash on mount */ + FORCE_HASH_DETECT, /* try to detect hash function on mount */ + + REISERFS_DATA_LOG, + REISERFS_DATA_ORDERED, + REISERFS_DATA_WRITEBACK, + +/* used for testing experimental features, makes benchmarking new + features with and without more convenient, should never be used by + users in any code shipped to users (ideally) */ + + REISERFS_NO_BORDER, + REISERFS_NO_UNHASHED_RELOCATION, + REISERFS_HASHED_RELOCATION, + REISERFS_ATTRS, + REISERFS_XATTRS_USER, + REISERFS_POSIXACL, + REISERFS_EXPOSE_PRIVROOT, + REISERFS_BARRIER_NONE, + REISERFS_BARRIER_FLUSH, + + /* Actions on error */ + REISERFS_ERROR_PANIC, + REISERFS_ERROR_RO, + REISERFS_ERROR_CONTINUE, + + REISERFS_USRQUOTA, /* User quota option specified */ + REISERFS_GRPQUOTA, /* Group quota option specified */ + + REISERFS_TEST1, + REISERFS_TEST2, + REISERFS_TEST3, + REISERFS_TEST4, + REISERFS_UNSUPPORTED_OPT, +}; + +#define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH)) +#define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH)) +#define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH)) +#define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT)) +#define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER)) +#define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION)) +#define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION)) +#define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4)) + +#define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL)) +#define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL)) +#define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY)) +#define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS)) +#define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5)) +#define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT)) +#define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG)) +#define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED)) +#define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK)) +#define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER)) +#define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL)) +#define reiserfs_expose_privroot(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_EXPOSE_PRIVROOT)) +#define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s)) +#define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE)) +#define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH)) + +#define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC)) +#define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO)) + +void reiserfs_file_buffer(struct buffer_head *bh, int list); +extern struct file_system_type reiserfs_fs_type; +int reiserfs_resize(struct super_block *, unsigned long); + +#define CARRY_ON 0 +#define SCHEDULE_OCCURRED 1 + +#define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh) +#define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal) +#define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block) +#define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free) +#define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap) + +#define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->) + +/* A safe version of the "bdevname", which returns the "s_id" field of + * a superblock or else "Null superblock" if the super block is NULL. + */ +static inline char *reiserfs_bdevname(struct super_block *s) +{ + return (s == NULL) ? "Null superblock" : s->s_id; +} + +#define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal))) +static inline int __reiserfs_is_journal_aborted(struct reiserfs_journal + *journal) +{ + return test_bit(J_ABORTED, &journal->j_state); +} + +/* + * Locking primitives. The write lock is a per superblock + * special mutex that has properties close to the Big Kernel Lock + * which was used in the previous locking scheme. + */ +void reiserfs_write_lock(struct super_block *s); +void reiserfs_write_unlock(struct super_block *s); +int reiserfs_write_lock_once(struct super_block *s); +void reiserfs_write_unlock_once(struct super_block *s, int lock_depth); + +#ifdef CONFIG_REISERFS_CHECK +void reiserfs_lock_check_recursive(struct super_block *s); +#else +static inline void reiserfs_lock_check_recursive(struct super_block *s) { } +#endif + +/* + * Several mutexes depend on the write lock. + * However sometimes we want to relax the write lock while we hold + * these mutexes, according to the release/reacquire on schedule() + * properties of the Bkl that were used. + * Reiserfs performances and locking were based on this scheme. + * Now that the write lock is a mutex and not the bkl anymore, doing so + * may result in a deadlock: + * + * A acquire write_lock + * A acquire j_commit_mutex + * A release write_lock and wait for something + * B acquire write_lock + * B can't acquire j_commit_mutex and sleep + * A can't acquire write lock anymore + * deadlock + * + * What we do here is avoiding such deadlock by playing the same game + * than the Bkl: if we can't acquire a mutex that depends on the write lock, + * we release the write lock, wait a bit and then retry. + * + * The mutexes concerned by this hack are: + * - The commit mutex of a journal list + * - The flush mutex + * - The journal lock + * - The inode mutex + */ +static inline void reiserfs_mutex_lock_safe(struct mutex *m, + struct super_block *s) +{ + reiserfs_lock_check_recursive(s); + reiserfs_write_unlock(s); + mutex_lock(m); + reiserfs_write_lock(s); +} + +static inline void +reiserfs_mutex_lock_nested_safe(struct mutex *m, unsigned int subclass, + struct super_block *s) +{ + reiserfs_lock_check_recursive(s); + reiserfs_write_unlock(s); + mutex_lock_nested(m, subclass); + reiserfs_write_lock(s); +} + +static inline void +reiserfs_down_read_safe(struct rw_semaphore *sem, struct super_block *s) +{ + reiserfs_lock_check_recursive(s); + reiserfs_write_unlock(s); + down_read(sem); + reiserfs_write_lock(s); +} + +/* + * When we schedule, we usually want to also release the write lock, + * according to the previous bkl based locking scheme of reiserfs. + */ +static inline void reiserfs_cond_resched(struct super_block *s) +{ + if (need_resched()) { + reiserfs_write_unlock(s); + schedule(); + reiserfs_write_lock(s); + } +} + +struct fid; + +/* in reading the #defines, it may help to understand that they employ + the following abbreviations: + + B = Buffer + I = Item header + H = Height within the tree (should be changed to LEV) + N = Number of the item in the node + STAT = stat data + DEH = Directory Entry Header + EC = Entry Count + E = Entry number + UL = Unsigned Long + BLKH = BLocK Header + UNFM = UNForMatted node + DC = Disk Child + P = Path + + These #defines are named by concatenating these abbreviations, + where first comes the arguments, and last comes the return value, + of the macro. + +*/ + +#define USE_INODE_GENERATION_COUNTER + +#define REISERFS_PREALLOCATE +#define DISPLACE_NEW_PACKING_LOCALITIES +#define PREALLOCATION_SIZE 9 + +/* n must be power of 2 */ +#define _ROUND_UP(x,n) (((x)+(n)-1u) & ~((n)-1u)) + +// to be ok for alpha and others we have to align structures to 8 byte +// boundary. +// FIXME: do not change 4 by anything else: there is code which relies on that +#define ROUND_UP(x) _ROUND_UP(x,8LL) + +/* debug levels. Right now, CONFIG_REISERFS_CHECK means print all debug +** messages. +*/ +#define REISERFS_DEBUG_CODE 5 /* extra messages to help find/debug errors */ + +void __reiserfs_warning(struct super_block *s, const char *id, + const char *func, const char *fmt, ...); +#define reiserfs_warning(s, id, fmt, args...) \ + __reiserfs_warning(s, id, __func__, fmt, ##args) +/* assertions handling */ + +/** always check a condition and panic if it's false. */ +#define __RASSERT(cond, scond, format, args...) \ +do { \ + if (!(cond)) \ + reiserfs_panic(NULL, "assertion failure", "(" #cond ") at " \ + __FILE__ ":%i:%s: " format "\n", \ + in_interrupt() ? -1 : task_pid_nr(current), \ + __LINE__, __func__ , ##args); \ +} while (0) + +#define RASSERT(cond, format, args...) __RASSERT(cond, #cond, format, ##args) + +#if defined( CONFIG_REISERFS_CHECK ) +#define RFALSE(cond, format, args...) __RASSERT(!(cond), "!(" #cond ")", format, ##args) +#else +#define RFALSE( cond, format, args... ) do {;} while( 0 ) +#endif + +#define CONSTF __attribute_const__ +/* + * Disk Data Structures + */ + +/***************************************************************************/ +/* SUPER BLOCK */ +/***************************************************************************/ + +/* + * Structure of super block on disk, a version of which in RAM is often accessed as REISERFS_SB(s)->s_rs + * the version in RAM is part of a larger structure containing fields never written to disk. + */ +#define UNSET_HASH 0 // read_super will guess about, what hash names + // in directories were sorted with +#define TEA_HASH 1 +#define YURA_HASH 2 +#define R5_HASH 3 +#define DEFAULT_HASH R5_HASH + +struct journal_params { + __le32 jp_journal_1st_block; /* where does journal start from on its + * device */ + __le32 jp_journal_dev; /* journal device st_rdev */ + __le32 jp_journal_size; /* size of the journal */ + __le32 jp_journal_trans_max; /* max number of blocks in a transaction. */ + __le32 jp_journal_magic; /* random value made on fs creation (this + * was sb_journal_block_count) */ + __le32 jp_journal_max_batch; /* max number of blocks to batch into a + * trans */ + __le32 jp_journal_max_commit_age; /* in seconds, how old can an async + * commit be */ + __le32 jp_journal_max_trans_age; /* in seconds, how old can a transaction + * be */ +}; + +/* this is the super from 3.5.X, where X >= 10 */ +struct reiserfs_super_block_v1 { + __le32 s_block_count; /* blocks count */ + __le32 s_free_blocks; /* free blocks count */ + __le32 s_root_block; /* root block number */ + struct journal_params s_journal; + __le16 s_blocksize; /* block size */ + __le16 s_oid_maxsize; /* max size of object id array, see + * get_objectid() commentary */ + __le16 s_oid_cursize; /* current size of object id array */ + __le16 s_umount_state; /* this is set to 1 when filesystem was + * umounted, to 2 - when not */ + char s_magic[10]; /* reiserfs magic string indicates that + * file system is reiserfs: + * "ReIsErFs" or "ReIsEr2Fs" or "ReIsEr3Fs" */ + __le16 s_fs_state; /* it is set to used by fsck to mark which + * phase of rebuilding is done */ + __le32 s_hash_function_code; /* indicate, what hash function is being use + * to sort names in a directory*/ + __le16 s_tree_height; /* height of disk tree */ + __le16 s_bmap_nr; /* amount of bitmap blocks needed to address + * each block of file system */ + __le16 s_version; /* this field is only reliable on filesystem + * with non-standard journal */ + __le16 s_reserved_for_journal; /* size in blocks of journal area on main + * device, we need to keep after + * making fs with non-standard journal */ +} __attribute__ ((__packed__)); + +#define SB_SIZE_V1 (sizeof(struct reiserfs_super_block_v1)) + +/* this is the on disk super block */ +struct reiserfs_super_block { + struct reiserfs_super_block_v1 s_v1; + __le32 s_inode_generation; + __le32 s_flags; /* Right now used only by inode-attributes, if enabled */ + unsigned char s_uuid[16]; /* filesystem unique identifier */ + unsigned char s_label[16]; /* filesystem volume label */ + __le16 s_mnt_count; /* Count of mounts since last fsck */ + __le16 s_max_mnt_count; /* Maximum mounts before check */ + __le32 s_lastcheck; /* Timestamp of last fsck */ + __le32 s_check_interval; /* Interval between checks */ + char s_unused[76]; /* zero filled by mkreiserfs and + * reiserfs_convert_objectid_map_v1() + * so any additions must be updated + * there as well. */ +} __attribute__ ((__packed__)); + +#define SB_SIZE (sizeof(struct reiserfs_super_block)) + +#define REISERFS_VERSION_1 0 +#define REISERFS_VERSION_2 2 + +// on-disk super block fields converted to cpu form +#define SB_DISK_SUPER_BLOCK(s) (REISERFS_SB(s)->s_rs) +#define SB_V1_DISK_SUPER_BLOCK(s) (&(SB_DISK_SUPER_BLOCK(s)->s_v1)) +#define SB_BLOCKSIZE(s) \ + le32_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_blocksize)) +#define SB_BLOCK_COUNT(s) \ + le32_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_block_count)) +#define SB_FREE_BLOCKS(s) \ + le32_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_free_blocks)) +#define SB_REISERFS_MAGIC(s) \ + (SB_V1_DISK_SUPER_BLOCK(s)->s_magic) +#define SB_ROOT_BLOCK(s) \ + le32_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_root_block)) +#define SB_TREE_HEIGHT(s) \ + le16_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_tree_height)) +#define SB_REISERFS_STATE(s) \ + le16_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_umount_state)) +#define SB_VERSION(s) le16_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_version)) +#define SB_BMAP_NR(s) le16_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_bmap_nr)) + +#define PUT_SB_BLOCK_COUNT(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_block_count = cpu_to_le32(val); } while (0) +#define PUT_SB_FREE_BLOCKS(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_free_blocks = cpu_to_le32(val); } while (0) +#define PUT_SB_ROOT_BLOCK(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_root_block = cpu_to_le32(val); } while (0) +#define PUT_SB_TREE_HEIGHT(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_tree_height = cpu_to_le16(val); } while (0) +#define PUT_SB_REISERFS_STATE(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_umount_state = cpu_to_le16(val); } while (0) +#define PUT_SB_VERSION(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_version = cpu_to_le16(val); } while (0) +#define PUT_SB_BMAP_NR(s, val) \ + do { SB_V1_DISK_SUPER_BLOCK(s)->s_bmap_nr = cpu_to_le16 (val); } while (0) + +#define SB_ONDISK_JP(s) (&SB_V1_DISK_SUPER_BLOCK(s)->s_journal) +#define SB_ONDISK_JOURNAL_SIZE(s) \ + le32_to_cpu ((SB_ONDISK_JP(s)->jp_journal_size)) +#define SB_ONDISK_JOURNAL_1st_BLOCK(s) \ + le32_to_cpu ((SB_ONDISK_JP(s)->jp_journal_1st_block)) +#define SB_ONDISK_JOURNAL_DEVICE(s) \ + le32_to_cpu ((SB_ONDISK_JP(s)->jp_journal_dev)) +#define SB_ONDISK_RESERVED_FOR_JOURNAL(s) \ + le16_to_cpu ((SB_V1_DISK_SUPER_BLOCK(s)->s_reserved_for_journal)) + +#define is_block_in_log_or_reserved_area(s, block) \ + block >= SB_JOURNAL_1st_RESERVED_BLOCK(s) \ + && block < SB_JOURNAL_1st_RESERVED_BLOCK(s) + \ + ((!is_reiserfs_jr(SB_DISK_SUPER_BLOCK(s)) ? \ + SB_ONDISK_JOURNAL_SIZE(s) + 1 : SB_ONDISK_RESERVED_FOR_JOURNAL(s))) + +int is_reiserfs_3_5(struct reiserfs_super_block *rs); +int is_reiserfs_3_6(struct reiserfs_super_block *rs); +int is_reiserfs_jr(struct reiserfs_super_block *rs); + +/* ReiserFS leaves the first 64k unused, so that partition labels have + enough space. If someone wants to write a fancy bootloader that + needs more than 64k, let us know, and this will be increased in size. + This number must be larger than than the largest block size on any + platform, or code will break. -Hans */ +#define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024) +#define REISERFS_FIRST_BLOCK unused_define +#define REISERFS_JOURNAL_OFFSET_IN_BYTES REISERFS_DISK_OFFSET_IN_BYTES + +/* the spot for the super in versions 3.5 - 3.5.10 (inclusive) */ +#define REISERFS_OLD_DISK_OFFSET_IN_BYTES (8 * 1024) + +/* reiserfs internal error code (used by search_by_key and fix_nodes)) */ +#define CARRY_ON 0 +#define REPEAT_SEARCH -1 +#define IO_ERROR -2 +#define NO_DISK_SPACE -3 +#define NO_BALANCING_NEEDED (-4) +#define NO_MORE_UNUSED_CONTIGUOUS_BLOCKS (-5) +#define QUOTA_EXCEEDED -6 + +typedef __u32 b_blocknr_t; +typedef __le32 unp_t; + +struct unfm_nodeinfo { + unp_t unfm_nodenum; + unsigned short unfm_freespace; +}; + +/* there are two formats of keys: 3.5 and 3.6 + */ +#define KEY_FORMAT_3_5 0 +#define KEY_FORMAT_3_6 1 + +/* there are two stat datas */ +#define STAT_DATA_V1 0 +#define STAT_DATA_V2 1 + +static inline struct reiserfs_inode_info *REISERFS_I(const struct inode *inode) +{ + return container_of(inode, struct reiserfs_inode_info, vfs_inode); +} + +static inline struct reiserfs_sb_info *REISERFS_SB(const struct super_block *sb) +{ + return sb->s_fs_info; +} + +/* Don't trust REISERFS_SB(sb)->s_bmap_nr, it's a u16 + * which overflows on large file systems. */ +static inline __u32 reiserfs_bmap_count(struct super_block *sb) +{ + return (SB_BLOCK_COUNT(sb) - 1) / (sb->s_blocksize * 8) + 1; +} + +static inline int bmap_would_wrap(unsigned bmap_nr) +{ + return bmap_nr > ((1LL << 16) - 1); +} + +/** this says about version of key of all items (but stat data) the + object consists of */ +#define get_inode_item_key_version( inode ) \ + ((REISERFS_I(inode)->i_flags & i_item_key_version_mask) ? KEY_FORMAT_3_6 : KEY_FORMAT_3_5) + +#define set_inode_item_key_version( inode, version ) \ + ({ if((version)==KEY_FORMAT_3_6) \ + REISERFS_I(inode)->i_flags |= i_item_key_version_mask; \ + else \ + REISERFS_I(inode)->i_flags &= ~i_item_key_version_mask; }) + +#define get_inode_sd_version(inode) \ + ((REISERFS_I(inode)->i_flags & i_stat_data_version_mask) ? STAT_DATA_V2 : STAT_DATA_V1) + +#define set_inode_sd_version(inode, version) \ + ({ if((version)==STAT_DATA_V2) \ + REISERFS_I(inode)->i_flags |= i_stat_data_version_mask; \ + else \ + REISERFS_I(inode)->i_flags &= ~i_stat_data_version_mask; }) + +/* This is an aggressive tail suppression policy, I am hoping it + improves our benchmarks. The principle behind it is that percentage + space saving is what matters, not absolute space saving. This is + non-intuitive, but it helps to understand it if you consider that the + cost to access 4 blocks is not much more than the cost to access 1 + block, if you have to do a seek and rotate. A tail risks a + non-linear disk access that is significant as a percentage of total + time cost for a 4 block file and saves an amount of space that is + less significant as a percentage of space, or so goes the hypothesis. + -Hans */ +#define STORE_TAIL_IN_UNFM_S1(n_file_size,n_tail_size,n_block_size) \ +(\ + (!(n_tail_size)) || \ + (((n_tail_size) > MAX_DIRECT_ITEM_LEN(n_block_size)) || \ + ( (n_file_size) >= (n_block_size) * 4 ) || \ + ( ( (n_file_size) >= (n_block_size) * 3 ) && \ + ( (n_tail_size) >= (MAX_DIRECT_ITEM_LEN(n_block_size))/4) ) || \ + ( ( (n_file_size) >= (n_block_size) * 2 ) && \ + ( (n_tail_size) >= (MAX_DIRECT_ITEM_LEN(n_block_size))/2) ) || \ + ( ( (n_file_size) >= (n_block_size) ) && \ + ( (n_tail_size) >= (MAX_DIRECT_ITEM_LEN(n_block_size) * 3)/4) ) ) \ +) + +/* Another strategy for tails, this one means only create a tail if all the + file would fit into one DIRECT item. + Primary intention for this one is to increase performance by decreasing + seeking. +*/ +#define STORE_TAIL_IN_UNFM_S2(n_file_size,n_tail_size,n_block_size) \ +(\ + (!(n_tail_size)) || \ + (((n_file_size) > MAX_DIRECT_ITEM_LEN(n_block_size)) ) \ +) + +/* + * values for s_umount_state field + */ +#define REISERFS_VALID_FS 1 +#define REISERFS_ERROR_FS 2 + +// +// there are 5 item types currently +// +#define TYPE_STAT_DATA 0 +#define TYPE_INDIRECT 1 +#define TYPE_DIRECT 2 +#define TYPE_DIRENTRY 3 +#define TYPE_MAXTYPE 3 +#define TYPE_ANY 15 // FIXME: comment is required + +/***************************************************************************/ +/* KEY & ITEM HEAD */ +/***************************************************************************/ + +// +// directories use this key as well as old files +// +struct offset_v1 { + __le32 k_offset; + __le32 k_uniqueness; +} __attribute__ ((__packed__)); + +struct offset_v2 { + __le64 v; +} __attribute__ ((__packed__)); + +static inline __u16 offset_v2_k_type(const struct offset_v2 *v2) +{ + __u8 type = le64_to_cpu(v2->v) >> 60; + return (type <= TYPE_MAXTYPE) ? type : TYPE_ANY; +} + +static inline void set_offset_v2_k_type(struct offset_v2 *v2, int type) +{ + v2->v = + (v2->v & cpu_to_le64(~0ULL >> 4)) | cpu_to_le64((__u64) type << 60); +} + +static inline loff_t offset_v2_k_offset(const struct offset_v2 *v2) +{ + return le64_to_cpu(v2->v) & (~0ULL >> 4); +} + +static inline void set_offset_v2_k_offset(struct offset_v2 *v2, loff_t offset) +{ + offset &= (~0ULL >> 4); + v2->v = (v2->v & cpu_to_le64(15ULL << 60)) | cpu_to_le64(offset); +} + +/* Key of an item determines its location in the S+tree, and + is composed of 4 components */ +struct reiserfs_key { + __le32 k_dir_id; /* packing locality: by default parent + directory object id */ + __le32 k_objectid; /* object identifier */ + union { + struct offset_v1 k_offset_v1; + struct offset_v2 k_offset_v2; + } __attribute__ ((__packed__)) u; +} __attribute__ ((__packed__)); + +struct in_core_key { + __u32 k_dir_id; /* packing locality: by default parent + directory object id */ + __u32 k_objectid; /* object identifier */ + __u64 k_offset; + __u8 k_type; +}; + +struct cpu_key { + struct in_core_key on_disk_key; + int version; + int key_length; /* 3 in all cases but direct2indirect and + indirect2direct conversion */ +}; + +/* Our function for comparing keys can compare keys of different + lengths. It takes as a parameter the length of the keys it is to + compare. These defines are used in determining what is to be passed + to it as that parameter. */ +#define REISERFS_FULL_KEY_LEN 4 +#define REISERFS_SHORT_KEY_LEN 2 + +/* The result of the key compare */ +#define FIRST_GREATER 1 +#define SECOND_GREATER -1 +#define KEYS_IDENTICAL 0 +#define KEY_FOUND 1 +#define KEY_NOT_FOUND 0 + +#define KEY_SIZE (sizeof(struct reiserfs_key)) +#define SHORT_KEY_SIZE (sizeof (__u32) + sizeof (__u32)) + +/* return values for search_by_key and clones */ +#define ITEM_FOUND 1 +#define ITEM_NOT_FOUND 0 +#define ENTRY_FOUND 1 +#define ENTRY_NOT_FOUND 0 +#define DIRECTORY_NOT_FOUND -1 +#define REGULAR_FILE_FOUND -2 +#define DIRECTORY_FOUND -3 +#define BYTE_FOUND 1 +#define BYTE_NOT_FOUND 0 +#define FILE_NOT_FOUND -1 + +#define POSITION_FOUND 1 +#define POSITION_NOT_FOUND 0 + +// return values for reiserfs_find_entry and search_by_entry_key +#define NAME_FOUND 1 +#define NAME_NOT_FOUND 0 +#define GOTO_PREVIOUS_ITEM 2 +#define NAME_FOUND_INVISIBLE 3 + +/* Everything in the filesystem is stored as a set of items. The + item head contains the key of the item, its free space (for + indirect items) and specifies the location of the item itself + within the block. */ + +struct item_head { + /* Everything in the tree is found by searching for it based on + * its key.*/ + struct reiserfs_key ih_key; + union { + /* The free space in the last unformatted node of an + indirect item if this is an indirect item. This + equals 0xFFFF iff this is a direct item or stat data + item. Note that the key, not this field, is used to + determine the item type, and thus which field this + union contains. */ + __le16 ih_free_space_reserved; + /* Iff this is a directory item, this field equals the + number of directory entries in the directory item. */ + __le16 ih_entry_count; + } __attribute__ ((__packed__)) u; + __le16 ih_item_len; /* total size of the item body */ + __le16 ih_item_location; /* an offset to the item body + * within the block */ + __le16 ih_version; /* 0 for all old items, 2 for new + ones. Highest bit is set by fsck + temporary, cleaned after all + done */ +} __attribute__ ((__packed__)); +/* size of item header */ +#define IH_SIZE (sizeof(struct item_head)) + +#define ih_free_space(ih) le16_to_cpu((ih)->u.ih_free_space_reserved) +#define ih_version(ih) le16_to_cpu((ih)->ih_version) +#define ih_entry_count(ih) le16_to_cpu((ih)->u.ih_entry_count) +#define ih_location(ih) le16_to_cpu((ih)->ih_item_location) +#define ih_item_len(ih) le16_to_cpu((ih)->ih_item_len) + +#define put_ih_free_space(ih, val) do { (ih)->u.ih_free_space_reserved = cpu_to_le16(val); } while(0) +#define put_ih_version(ih, val) do { (ih)->ih_version = cpu_to_le16(val); } while (0) +#define put_ih_entry_count(ih, val) do { (ih)->u.ih_entry_count = cpu_to_le16(val); } while (0) +#define put_ih_location(ih, val) do { (ih)->ih_item_location = cpu_to_le16(val); } while (0) +#define put_ih_item_len(ih, val) do { (ih)->ih_item_len = cpu_to_le16(val); } while (0) + +#define unreachable_item(ih) (ih_version(ih) & (1 << 15)) + +#define get_ih_free_space(ih) (ih_version (ih) == KEY_FORMAT_3_6 ? 0 : ih_free_space (ih)) +#define set_ih_free_space(ih,val) put_ih_free_space((ih), ((ih_version(ih) == KEY_FORMAT_3_6) ? 0 : (val))) + +/* these operate on indirect items, where you've got an array of ints +** at a possibly unaligned location. These are a noop on ia32 +** +** p is the array of __u32, i is the index into the array, v is the value +** to store there. +*/ +#define get_block_num(p, i) get_unaligned_le32((p) + (i)) +#define put_block_num(p, i, v) put_unaligned_le32((v), (p) + (i)) + +// +// in old version uniqueness field shows key type +// +#define V1_SD_UNIQUENESS 0 +#define V1_INDIRECT_UNIQUENESS 0xfffffffe +#define V1_DIRECT_UNIQUENESS 0xffffffff +#define V1_DIRENTRY_UNIQUENESS 500 +#define V1_ANY_UNIQUENESS 555 // FIXME: comment is required + +// +// here are conversion routines +// +static inline int uniqueness2type(__u32 uniqueness) CONSTF; +static inline int uniqueness2type(__u32 uniqueness) +{ + switch ((int)uniqueness) { + case V1_SD_UNIQUENESS: + return TYPE_STAT_DATA; + case V1_INDIRECT_UNIQUENESS: + return TYPE_INDIRECT; + case V1_DIRECT_UNIQUENESS: + return TYPE_DIRECT; + case V1_DIRENTRY_UNIQUENESS: + return TYPE_DIRENTRY; + case V1_ANY_UNIQUENESS: + default: + return TYPE_ANY; + } +} + +static inline __u32 type2uniqueness(int type) CONSTF; +static inline __u32 type2uniqueness(int type) +{ + switch (type) { + case TYPE_STAT_DATA: + return V1_SD_UNIQUENESS; + case TYPE_INDIRECT: + return V1_INDIRECT_UNIQUENESS; + case TYPE_DIRECT: + return V1_DIRECT_UNIQUENESS; + case TYPE_DIRENTRY: + return V1_DIRENTRY_UNIQUENESS; + case TYPE_ANY: + default: + return V1_ANY_UNIQUENESS; + } +} + +// +// key is pointer to on disk key which is stored in le, result is cpu, +// there is no way to get version of object from key, so, provide +// version to these defines +// +static inline loff_t le_key_k_offset(int version, + const struct reiserfs_key *key) +{ + return (version == KEY_FORMAT_3_5) ? + le32_to_cpu(key->u.k_offset_v1.k_offset) : + offset_v2_k_offset(&(key->u.k_offset_v2)); +} + +static inline loff_t le_ih_k_offset(const struct item_head *ih) +{ + return le_key_k_offset(ih_version(ih), &(ih->ih_key)); +} + +static inline loff_t le_key_k_type(int version, const struct reiserfs_key *key) +{ + return (version == KEY_FORMAT_3_5) ? + uniqueness2type(le32_to_cpu(key->u.k_offset_v1.k_uniqueness)) : + offset_v2_k_type(&(key->u.k_offset_v2)); +} + +static inline loff_t le_ih_k_type(const struct item_head *ih) +{ + return le_key_k_type(ih_version(ih), &(ih->ih_key)); +} + +static inline void set_le_key_k_offset(int version, struct reiserfs_key *key, + loff_t offset) +{ + (version == KEY_FORMAT_3_5) ? (void)(key->u.k_offset_v1.k_offset = cpu_to_le32(offset)) : /* jdm check */ + (void)(set_offset_v2_k_offset(&(key->u.k_offset_v2), offset)); +} + +static inline void set_le_ih_k_offset(struct item_head *ih, loff_t offset) +{ + set_le_key_k_offset(ih_version(ih), &(ih->ih_key), offset); +} + +static inline void set_le_key_k_type(int version, struct reiserfs_key *key, + int type) +{ + (version == KEY_FORMAT_3_5) ? + (void)(key->u.k_offset_v1.k_uniqueness = + cpu_to_le32(type2uniqueness(type))) + : (void)(set_offset_v2_k_type(&(key->u.k_offset_v2), type)); +} + +static inline void set_le_ih_k_type(struct item_head *ih, int type) +{ + set_le_key_k_type(ih_version(ih), &(ih->ih_key), type); +} + +static inline int is_direntry_le_key(int version, struct reiserfs_key *key) +{ + return le_key_k_type(version, key) == TYPE_DIRENTRY; +} + +static inline int is_direct_le_key(int version, struct reiserfs_key *key) +{ + return le_key_k_type(version, key) == TYPE_DIRECT; +} + +static inline int is_indirect_le_key(int version, struct reiserfs_key *key) +{ + return le_key_k_type(version, key) == TYPE_INDIRECT; +} + +static inline int is_statdata_le_key(int version, struct reiserfs_key *key) +{ + return le_key_k_type(version, key) == TYPE_STAT_DATA; +} + +// +// item header has version. +// +static inline int is_direntry_le_ih(struct item_head *ih) +{ + return is_direntry_le_key(ih_version(ih), &ih->ih_key); +} + +static inline int is_direct_le_ih(struct item_head *ih) +{ + return is_direct_le_key(ih_version(ih), &ih->ih_key); +} + +static inline int is_indirect_le_ih(struct item_head *ih) +{ + return is_indirect_le_key(ih_version(ih), &ih->ih_key); +} + +static inline int is_statdata_le_ih(struct item_head *ih) +{ + return is_statdata_le_key(ih_version(ih), &ih->ih_key); +} + +// +// key is pointer to cpu key, result is cpu +// +static inline loff_t cpu_key_k_offset(const struct cpu_key *key) +{ + return key->on_disk_key.k_offset; +} + +static inline loff_t cpu_key_k_type(const struct cpu_key *key) +{ + return key->on_disk_key.k_type; +} + +static inline void set_cpu_key_k_offset(struct cpu_key *key, loff_t offset) +{ + key->on_disk_key.k_offset = offset; +} + +static inline void set_cpu_key_k_type(struct cpu_key *key, int type) +{ + key->on_disk_key.k_type = type; +} + +static inline void cpu_key_k_offset_dec(struct cpu_key *key) +{ + key->on_disk_key.k_offset--; +} + +#define is_direntry_cpu_key(key) (cpu_key_k_type (key) == TYPE_DIRENTRY) +#define is_direct_cpu_key(key) (cpu_key_k_type (key) == TYPE_DIRECT) +#define is_indirect_cpu_key(key) (cpu_key_k_type (key) == TYPE_INDIRECT) +#define is_statdata_cpu_key(key) (cpu_key_k_type (key) == TYPE_STAT_DATA) + +/* are these used ? */ +#define is_direntry_cpu_ih(ih) (is_direntry_cpu_key (&((ih)->ih_key))) +#define is_direct_cpu_ih(ih) (is_direct_cpu_key (&((ih)->ih_key))) +#define is_indirect_cpu_ih(ih) (is_indirect_cpu_key (&((ih)->ih_key))) +#define is_statdata_cpu_ih(ih) (is_statdata_cpu_key (&((ih)->ih_key))) + +#define I_K_KEY_IN_ITEM(ih, key, n_blocksize) \ + (!COMP_SHORT_KEYS(ih, key) && \ + I_OFF_BYTE_IN_ITEM(ih, k_offset(key), n_blocksize)) + +/* maximal length of item */ +#define MAX_ITEM_LEN(block_size) (block_size - BLKH_SIZE - IH_SIZE) +#define MIN_ITEM_LEN 1 + +/* object identifier for root dir */ +#define REISERFS_ROOT_OBJECTID 2 +#define REISERFS_ROOT_PARENT_OBJECTID 1 + +extern struct reiserfs_key root_key; + +/* + * Picture represents a leaf of the S+tree + * ______________________________________________________ + * | | Array of | | | + * |Block | Object-Item | F r e e | Objects- | + * | head | Headers | S p a c e | Items | + * |______|_______________|___________________|___________| + */ + +/* Header of a disk block. More precisely, header of a formatted leaf + or internal node, and not the header of an unformatted node. */ +struct block_head { + __le16 blk_level; /* Level of a block in the tree. */ + __le16 blk_nr_item; /* Number of keys/items in a block. */ + __le16 blk_free_space; /* Block free space in bytes. */ + __le16 blk_reserved; + /* dump this in v4/planA */ + struct reiserfs_key blk_right_delim_key; /* kept only for compatibility */ +}; + +#define BLKH_SIZE (sizeof(struct block_head)) +#define blkh_level(p_blkh) (le16_to_cpu((p_blkh)->blk_level)) +#define blkh_nr_item(p_blkh) (le16_to_cpu((p_blkh)->blk_nr_item)) +#define blkh_free_space(p_blkh) (le16_to_cpu((p_blkh)->blk_free_space)) +#define blkh_reserved(p_blkh) (le16_to_cpu((p_blkh)->blk_reserved)) +#define set_blkh_level(p_blkh,val) ((p_blkh)->blk_level = cpu_to_le16(val)) +#define set_blkh_nr_item(p_blkh,val) ((p_blkh)->blk_nr_item = cpu_to_le16(val)) +#define set_blkh_free_space(p_blkh,val) ((p_blkh)->blk_free_space = cpu_to_le16(val)) +#define set_blkh_reserved(p_blkh,val) ((p_blkh)->blk_reserved = cpu_to_le16(val)) +#define blkh_right_delim_key(p_blkh) ((p_blkh)->blk_right_delim_key) +#define set_blkh_right_delim_key(p_blkh,val) ((p_blkh)->blk_right_delim_key = val) + +/* + * values for blk_level field of the struct block_head + */ + +#define FREE_LEVEL 0 /* when node gets removed from the tree its + blk_level is set to FREE_LEVEL. It is then + used to see whether the node is still in the + tree */ + +#define DISK_LEAF_NODE_LEVEL 1 /* Leaf node level. */ + +/* Given the buffer head of a formatted node, resolve to the block head of that node. */ +#define B_BLK_HEAD(bh) ((struct block_head *)((bh)->b_data)) +/* Number of items that are in buffer. */ +#define B_NR_ITEMS(bh) (blkh_nr_item(B_BLK_HEAD(bh))) +#define B_LEVEL(bh) (blkh_level(B_BLK_HEAD(bh))) +#define B_FREE_SPACE(bh) (blkh_free_space(B_BLK_HEAD(bh))) + +#define PUT_B_NR_ITEMS(bh, val) do { set_blkh_nr_item(B_BLK_HEAD(bh), val); } while (0) +#define PUT_B_LEVEL(bh, val) do { set_blkh_level(B_BLK_HEAD(bh), val); } while (0) +#define PUT_B_FREE_SPACE(bh, val) do { set_blkh_free_space(B_BLK_HEAD(bh), val); } while (0) + +/* Get right delimiting key. -- little endian */ +#define B_PRIGHT_DELIM_KEY(bh) (&(blk_right_delim_key(B_BLK_HEAD(bh)))) + +/* Does the buffer contain a disk leaf. */ +#define B_IS_ITEMS_LEVEL(bh) (B_LEVEL(bh) == DISK_LEAF_NODE_LEVEL) + +/* Does the buffer contain a disk internal node */ +#define B_IS_KEYS_LEVEL(bh) (B_LEVEL(bh) > DISK_LEAF_NODE_LEVEL \ + && B_LEVEL(bh) <= MAX_HEIGHT) + +/***************************************************************************/ +/* STAT DATA */ +/***************************************************************************/ + +// +// old stat data is 32 bytes long. We are going to distinguish new one by +// different size +// +struct stat_data_v1 { + __le16 sd_mode; /* file type, permissions */ + __le16 sd_nlink; /* number of hard links */ + __le16 sd_uid; /* owner */ + __le16 sd_gid; /* group */ + __le32 sd_size; /* file size */ + __le32 sd_atime; /* time of last access */ + __le32 sd_mtime; /* time file was last modified */ + __le32 sd_ctime; /* time inode (stat data) was last changed (except changes to sd_atime and sd_mtime) */ + union { + __le32 sd_rdev; + __le32 sd_blocks; /* number of blocks file uses */ + } __attribute__ ((__packed__)) u; + __le32 sd_first_direct_byte; /* first byte of file which is stored + in a direct item: except that if it + equals 1 it is a symlink and if it + equals ~(__u32)0 there is no + direct item. The existence of this + field really grates on me. Let's + replace it with a macro based on + sd_size and our tail suppression + policy. Someday. -Hans */ +} __attribute__ ((__packed__)); + +#define SD_V1_SIZE (sizeof(struct stat_data_v1)) +#define stat_data_v1(ih) (ih_version (ih) == KEY_FORMAT_3_5) +#define sd_v1_mode(sdp) (le16_to_cpu((sdp)->sd_mode)) +#define set_sd_v1_mode(sdp,v) ((sdp)->sd_mode = cpu_to_le16(v)) +#define sd_v1_nlink(sdp) (le16_to_cpu((sdp)->sd_nlink)) +#define set_sd_v1_nlink(sdp,v) ((sdp)->sd_nlink = cpu_to_le16(v)) +#define sd_v1_uid(sdp) (le16_to_cpu((sdp)->sd_uid)) +#define set_sd_v1_uid(sdp,v) ((sdp)->sd_uid = cpu_to_le16(v)) +#define sd_v1_gid(sdp) (le16_to_cpu((sdp)->sd_gid)) +#define set_sd_v1_gid(sdp,v) ((sdp)->sd_gid = cpu_to_le16(v)) +#define sd_v1_size(sdp) (le32_to_cpu((sdp)->sd_size)) +#define set_sd_v1_size(sdp,v) ((sdp)->sd_size = cpu_to_le32(v)) +#define sd_v1_atime(sdp) (le32_to_cpu((sdp)->sd_atime)) +#define set_sd_v1_atime(sdp,v) ((sdp)->sd_atime = cpu_to_le32(v)) +#define sd_v1_mtime(sdp) (le32_to_cpu((sdp)->sd_mtime)) +#define set_sd_v1_mtime(sdp,v) ((sdp)->sd_mtime = cpu_to_le32(v)) +#define sd_v1_ctime(sdp) (le32_to_cpu((sdp)->sd_ctime)) +#define set_sd_v1_ctime(sdp,v) ((sdp)->sd_ctime = cpu_to_le32(v)) +#define sd_v1_rdev(sdp) (le32_to_cpu((sdp)->u.sd_rdev)) +#define set_sd_v1_rdev(sdp,v) ((sdp)->u.sd_rdev = cpu_to_le32(v)) +#define sd_v1_blocks(sdp) (le32_to_cpu((sdp)->u.sd_blocks)) +#define set_sd_v1_blocks(sdp,v) ((sdp)->u.sd_blocks = cpu_to_le32(v)) +#define sd_v1_first_direct_byte(sdp) \ + (le32_to_cpu((sdp)->sd_first_direct_byte)) +#define set_sd_v1_first_direct_byte(sdp,v) \ + ((sdp)->sd_first_direct_byte = cpu_to_le32(v)) + +/* inode flags stored in sd_attrs (nee sd_reserved) */ + +/* we want common flags to have the same values as in ext2, + so chattr(1) will work without problems */ +#define REISERFS_IMMUTABLE_FL FS_IMMUTABLE_FL +#define REISERFS_APPEND_FL FS_APPEND_FL +#define REISERFS_SYNC_FL FS_SYNC_FL +#define REISERFS_NOATIME_FL FS_NOATIME_FL +#define REISERFS_NODUMP_FL FS_NODUMP_FL +#define REISERFS_SECRM_FL FS_SECRM_FL +#define REISERFS_UNRM_FL FS_UNRM_FL +#define REISERFS_COMPR_FL FS_COMPR_FL +#define REISERFS_NOTAIL_FL FS_NOTAIL_FL + +/* persistent flags that file inherits from the parent directory */ +#define REISERFS_INHERIT_MASK ( REISERFS_IMMUTABLE_FL | \ + REISERFS_SYNC_FL | \ + REISERFS_NOATIME_FL | \ + REISERFS_NODUMP_FL | \ + REISERFS_SECRM_FL | \ + REISERFS_COMPR_FL | \ + REISERFS_NOTAIL_FL ) + +/* Stat Data on disk (reiserfs version of UFS disk inode minus the + address blocks) */ +struct stat_data { + __le16 sd_mode; /* file type, permissions */ + __le16 sd_attrs; /* persistent inode flags */ + __le32 sd_nlink; /* number of hard links */ + __le64 sd_size; /* file size */ + __le32 sd_uid; /* owner */ + __le32 sd_gid; /* group */ + __le32 sd_atime; /* time of last access */ + __le32 sd_mtime; /* time file was last modified */ + __le32 sd_ctime; /* time inode (stat data) was last changed (except changes to sd_atime and sd_mtime) */ + __le32 sd_blocks; + union { + __le32 sd_rdev; + __le32 sd_generation; + //__le32 sd_first_direct_byte; + /* first byte of file which is stored in a + direct item: except that if it equals 1 + it is a symlink and if it equals + ~(__u32)0 there is no direct item. The + existence of this field really grates + on me. Let's replace it with a macro + based on sd_size and our tail + suppression policy? */ + } __attribute__ ((__packed__)) u; +} __attribute__ ((__packed__)); +// +// this is 44 bytes long +// +#define SD_SIZE (sizeof(struct stat_data)) +#define SD_V2_SIZE SD_SIZE +#define stat_data_v2(ih) (ih_version (ih) == KEY_FORMAT_3_6) +#define sd_v2_mode(sdp) (le16_to_cpu((sdp)->sd_mode)) +#define set_sd_v2_mode(sdp,v) ((sdp)->sd_mode = cpu_to_le16(v)) +/* sd_reserved */ +/* set_sd_reserved */ +#define sd_v2_nlink(sdp) (le32_to_cpu((sdp)->sd_nlink)) +#define set_sd_v2_nlink(sdp,v) ((sdp)->sd_nlink = cpu_to_le32(v)) +#define sd_v2_size(sdp) (le64_to_cpu((sdp)->sd_size)) +#define set_sd_v2_size(sdp,v) ((sdp)->sd_size = cpu_to_le64(v)) +#define sd_v2_uid(sdp) (le32_to_cpu((sdp)->sd_uid)) +#define set_sd_v2_uid(sdp,v) ((sdp)->sd_uid = cpu_to_le32(v)) +#define sd_v2_gid(sdp) (le32_to_cpu((sdp)->sd_gid)) +#define set_sd_v2_gid(sdp,v) ((sdp)->sd_gid = cpu_to_le32(v)) +#define sd_v2_atime(sdp) (le32_to_cpu((sdp)->sd_atime)) +#define set_sd_v2_atime(sdp,v) ((sdp)->sd_atime = cpu_to_le32(v)) +#define sd_v2_mtime(sdp) (le32_to_cpu((sdp)->sd_mtime)) +#define set_sd_v2_mtime(sdp,v) ((sdp)->sd_mtime = cpu_to_le32(v)) +#define sd_v2_ctime(sdp) (le32_to_cpu((sdp)->sd_ctime)) +#define set_sd_v2_ctime(sdp,v) ((sdp)->sd_ctime = cpu_to_le32(v)) +#define sd_v2_blocks(sdp) (le32_to_cpu((sdp)->sd_blocks)) +#define set_sd_v2_blocks(sdp,v) ((sdp)->sd_blocks = cpu_to_le32(v)) +#define sd_v2_rdev(sdp) (le32_to_cpu((sdp)->u.sd_rdev)) +#define set_sd_v2_rdev(sdp,v) ((sdp)->u.sd_rdev = cpu_to_le32(v)) +#define sd_v2_generation(sdp) (le32_to_cpu((sdp)->u.sd_generation)) +#define set_sd_v2_generation(sdp,v) ((sdp)->u.sd_generation = cpu_to_le32(v)) +#define sd_v2_attrs(sdp) (le16_to_cpu((sdp)->sd_attrs)) +#define set_sd_v2_attrs(sdp,v) ((sdp)->sd_attrs = cpu_to_le16(v)) + +/***************************************************************************/ +/* DIRECTORY STRUCTURE */ +/***************************************************************************/ +/* + Picture represents the structure of directory items + ________________________________________________ + | Array of | | | | | | + | directory |N-1| N-2 | .... | 1st |0th| + | entry headers | | | | | | + |_______________|___|_____|________|_______|___| + <---- directory entries ------> + + First directory item has k_offset component 1. We store "." and ".." + in one item, always, we never split "." and ".." into differing + items. This makes, among other things, the code for removing + directories simpler. */ +#define SD_OFFSET 0 +#define SD_UNIQUENESS 0 +#define DOT_OFFSET 1 +#define DOT_DOT_OFFSET 2 +#define DIRENTRY_UNIQUENESS 500 + +/* */ +#define FIRST_ITEM_OFFSET 1 + +/* + Q: How to get key of object pointed to by entry from entry? + + A: Each directory entry has its header. This header has deh_dir_id and deh_objectid fields, those are key + of object, entry points to */ + +/* NOT IMPLEMENTED: + Directory will someday contain stat data of object */ + +struct reiserfs_de_head { + __le32 deh_offset; /* third component of the directory entry key */ + __le32 deh_dir_id; /* objectid of the parent directory of the object, that is referenced + by directory entry */ + __le32 deh_objectid; /* objectid of the object, that is referenced by directory entry */ + __le16 deh_location; /* offset of name in the whole item */ + __le16 deh_state; /* whether 1) entry contains stat data (for future), and 2) whether + entry is hidden (unlinked) */ +} __attribute__ ((__packed__)); +#define DEH_SIZE sizeof(struct reiserfs_de_head) +#define deh_offset(p_deh) (le32_to_cpu((p_deh)->deh_offset)) +#define deh_dir_id(p_deh) (le32_to_cpu((p_deh)->deh_dir_id)) +#define deh_objectid(p_deh) (le32_to_cpu((p_deh)->deh_objectid)) +#define deh_location(p_deh) (le16_to_cpu((p_deh)->deh_location)) +#define deh_state(p_deh) (le16_to_cpu((p_deh)->deh_state)) + +#define put_deh_offset(p_deh,v) ((p_deh)->deh_offset = cpu_to_le32((v))) +#define put_deh_dir_id(p_deh,v) ((p_deh)->deh_dir_id = cpu_to_le32((v))) +#define put_deh_objectid(p_deh,v) ((p_deh)->deh_objectid = cpu_to_le32((v))) +#define put_deh_location(p_deh,v) ((p_deh)->deh_location = cpu_to_le16((v))) +#define put_deh_state(p_deh,v) ((p_deh)->deh_state = cpu_to_le16((v))) + +/* empty directory contains two entries "." and ".." and their headers */ +#define EMPTY_DIR_SIZE \ +(DEH_SIZE * 2 + ROUND_UP (strlen (".")) + ROUND_UP (strlen (".."))) + +/* old format directories have this size when empty */ +#define EMPTY_DIR_SIZE_V1 (DEH_SIZE * 2 + 3) + +#define DEH_Statdata 0 /* not used now */ +#define DEH_Visible 2 + +/* 64 bit systems (and the S/390) need to be aligned explicitly -jdm */ +#if BITS_PER_LONG == 64 || defined(__s390__) || defined(__hppa__) +# define ADDR_UNALIGNED_BITS (3) +#endif + +/* These are only used to manipulate deh_state. + * Because of this, we'll use the ext2_ bit routines, + * since they are little endian */ +#ifdef ADDR_UNALIGNED_BITS + +# define aligned_address(addr) ((void *)((long)(addr) & ~((1UL << ADDR_UNALIGNED_BITS) - 1))) +# define unaligned_offset(addr) (((int)((long)(addr) & ((1 << ADDR_UNALIGNED_BITS) - 1))) << 3) + +# define set_bit_unaligned(nr, addr) \ + __test_and_set_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) +# define clear_bit_unaligned(nr, addr) \ + __test_and_clear_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) +# define test_bit_unaligned(nr, addr) \ + test_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) + +#else + +# define set_bit_unaligned(nr, addr) __test_and_set_bit_le(nr, addr) +# define clear_bit_unaligned(nr, addr) __test_and_clear_bit_le(nr, addr) +# define test_bit_unaligned(nr, addr) test_bit_le(nr, addr) + +#endif + +#define mark_de_with_sd(deh) set_bit_unaligned (DEH_Statdata, &((deh)->deh_state)) +#define mark_de_without_sd(deh) clear_bit_unaligned (DEH_Statdata, &((deh)->deh_state)) +#define mark_de_visible(deh) set_bit_unaligned (DEH_Visible, &((deh)->deh_state)) +#define mark_de_hidden(deh) clear_bit_unaligned (DEH_Visible, &((deh)->deh_state)) + +#define de_with_sd(deh) test_bit_unaligned (DEH_Statdata, &((deh)->deh_state)) +#define de_visible(deh) test_bit_unaligned (DEH_Visible, &((deh)->deh_state)) +#define de_hidden(deh) !test_bit_unaligned (DEH_Visible, &((deh)->deh_state)) + +extern void make_empty_dir_item_v1(char *body, __le32 dirid, __le32 objid, + __le32 par_dirid, __le32 par_objid); +extern void make_empty_dir_item(char *body, __le32 dirid, __le32 objid, + __le32 par_dirid, __le32 par_objid); + +/* array of the entry headers */ + /* get item body */ +#define B_I_PITEM(bh,ih) ( (bh)->b_data + ih_location(ih) ) +#define B_I_DEH(bh,ih) ((struct reiserfs_de_head *)(B_I_PITEM(bh,ih))) + +/* length of the directory entry in directory item. This define + calculates length of i-th directory entry using directory entry + locations from dir entry head. When it calculates length of 0-th + directory entry, it uses length of whole item in place of entry + location of the non-existent following entry in the calculation. + See picture above.*/ +/* +#define I_DEH_N_ENTRY_LENGTH(ih,deh,i) \ +((i) ? (deh_location((deh)-1) - deh_location((deh))) : (ih_item_len((ih)) - deh_location((deh)))) +*/ +static inline int entry_length(const struct buffer_head *bh, + const struct item_head *ih, int pos_in_item) +{ + struct reiserfs_de_head *deh; + + deh = B_I_DEH(bh, ih) + pos_in_item; + if (pos_in_item) + return deh_location(deh - 1) - deh_location(deh); + + return ih_item_len(ih) - deh_location(deh); +} + +/* number of entries in the directory item, depends on ENTRY_COUNT being at the start of directory dynamic data. */ +#define I_ENTRY_COUNT(ih) (ih_entry_count((ih))) + +/* name by bh, ih and entry_num */ +#define B_I_E_NAME(bh,ih,entry_num) ((char *)(bh->b_data + ih_location(ih) + deh_location(B_I_DEH(bh,ih)+(entry_num)))) + +// two entries per block (at least) +#define REISERFS_MAX_NAME(block_size) 255 + +/* this structure is used for operations on directory entries. It is + not a disk structure. */ +/* When reiserfs_find_entry or search_by_entry_key find directory + entry, they return filled reiserfs_dir_entry structure */ +struct reiserfs_dir_entry { + struct buffer_head *de_bh; + int de_item_num; + struct item_head *de_ih; + int de_entry_num; + struct reiserfs_de_head *de_deh; + int de_entrylen; + int de_namelen; + char *de_name; + unsigned long *de_gen_number_bit_string; + + __u32 de_dir_id; + __u32 de_objectid; + + struct cpu_key de_entry_key; +}; + +/* these defines are useful when a particular member of a reiserfs_dir_entry is needed */ + +/* pointer to file name, stored in entry */ +#define B_I_DEH_ENTRY_FILE_NAME(bh,ih,deh) (B_I_PITEM (bh, ih) + deh_location(deh)) + +/* length of name */ +#define I_DEH_N_ENTRY_FILE_NAME_LENGTH(ih,deh,entry_num) \ +(I_DEH_N_ENTRY_LENGTH (ih, deh, entry_num) - (de_with_sd (deh) ? SD_SIZE : 0)) + +/* hash value occupies bits from 7 up to 30 */ +#define GET_HASH_VALUE(offset) ((offset) & 0x7fffff80LL) +/* generation number occupies 7 bits starting from 0 up to 6 */ +#define GET_GENERATION_NUMBER(offset) ((offset) & 0x7fLL) +#define MAX_GENERATION_NUMBER 127 + +#define SET_GENERATION_NUMBER(offset,gen_number) (GET_HASH_VALUE(offset)|(gen_number)) + +/* + * Picture represents an internal node of the reiserfs tree + * ______________________________________________________ + * | | Array of | Array of | Free | + * |block | keys | pointers | space | + * | head | N | N+1 | | + * |______|_______________|___________________|___________| + */ + +/***************************************************************************/ +/* DISK CHILD */ +/***************************************************************************/ +/* Disk child pointer: The pointer from an internal node of the tree + to a node that is on disk. */ +struct disk_child { + __le32 dc_block_number; /* Disk child's block number. */ + __le16 dc_size; /* Disk child's used space. */ + __le16 dc_reserved; +}; + +#define DC_SIZE (sizeof(struct disk_child)) +#define dc_block_number(dc_p) (le32_to_cpu((dc_p)->dc_block_number)) +#define dc_size(dc_p) (le16_to_cpu((dc_p)->dc_size)) +#define put_dc_block_number(dc_p, val) do { (dc_p)->dc_block_number = cpu_to_le32(val); } while(0) +#define put_dc_size(dc_p, val) do { (dc_p)->dc_size = cpu_to_le16(val); } while(0) + +/* Get disk child by buffer header and position in the tree node. */ +#define B_N_CHILD(bh, n_pos) ((struct disk_child *)\ +((bh)->b_data + BLKH_SIZE + B_NR_ITEMS(bh) * KEY_SIZE + DC_SIZE * (n_pos))) + +/* Get disk child number by buffer header and position in the tree node. */ +#define B_N_CHILD_NUM(bh, n_pos) (dc_block_number(B_N_CHILD(bh, n_pos))) +#define PUT_B_N_CHILD_NUM(bh, n_pos, val) \ + (put_dc_block_number(B_N_CHILD(bh, n_pos), val)) + + /* maximal value of field child_size in structure disk_child */ + /* child size is the combined size of all items and their headers */ +#define MAX_CHILD_SIZE(bh) ((int)( (bh)->b_size - BLKH_SIZE )) + +/* amount of used space in buffer (not including block head) */ +#define B_CHILD_SIZE(cur) (MAX_CHILD_SIZE(cur)-(B_FREE_SPACE(cur))) + +/* max and min number of keys in internal node */ +#define MAX_NR_KEY(bh) ( (MAX_CHILD_SIZE(bh)-DC_SIZE)/(KEY_SIZE+DC_SIZE) ) +#define MIN_NR_KEY(bh) (MAX_NR_KEY(bh)/2) + +/***************************************************************************/ +/* PATH STRUCTURES AND DEFINES */ +/***************************************************************************/ + +/* Search_by_key fills up the path from the root to the leaf as it descends the tree looking for the + key. It uses reiserfs_bread to try to find buffers in the cache given their block number. If it + does not find them in the cache it reads them from disk. For each node search_by_key finds using + reiserfs_bread it then uses bin_search to look through that node. bin_search will find the + position of the block_number of the next node if it is looking through an internal node. If it + is looking through a leaf node bin_search will find the position of the item which has key either + equal to given key, or which is the maximal key less than the given key. */ + +struct path_element { + struct buffer_head *pe_buffer; /* Pointer to the buffer at the path in the tree. */ + int pe_position; /* Position in the tree node which is placed in the */ + /* buffer above. */ +}; + +#define MAX_HEIGHT 5 /* maximal height of a tree. don't change this without changing JOURNAL_PER_BALANCE_CNT */ +#define EXTENDED_MAX_HEIGHT 7 /* Must be equals MAX_HEIGHT + FIRST_PATH_ELEMENT_OFFSET */ +#define FIRST_PATH_ELEMENT_OFFSET 2 /* Must be equal to at least 2. */ + +#define ILLEGAL_PATH_ELEMENT_OFFSET 1 /* Must be equal to FIRST_PATH_ELEMENT_OFFSET - 1 */ +#define MAX_FEB_SIZE 6 /* this MUST be MAX_HEIGHT + 1. See about FEB below */ + +/* We need to keep track of who the ancestors of nodes are. When we + perform a search we record which nodes were visited while + descending the tree looking for the node we searched for. This list + of nodes is called the path. This information is used while + performing balancing. Note that this path information may become + invalid, and this means we must check it when using it to see if it + is still valid. You'll need to read search_by_key and the comments + in it, especially about decrement_counters_in_path(), to understand + this structure. + +Paths make the code so much harder to work with and debug.... An +enormous number of bugs are due to them, and trying to write or modify +code that uses them just makes my head hurt. They are based on an +excessive effort to avoid disturbing the precious VFS code.:-( The +gods only know how we are going to SMP the code that uses them. +znodes are the way! */ + +#define PATH_READA 0x1 /* do read ahead */ +#define PATH_READA_BACK 0x2 /* read backwards */ + +struct treepath { + int path_length; /* Length of the array above. */ + int reada; + struct path_element path_elements[EXTENDED_MAX_HEIGHT]; /* Array of the path elements. */ + int pos_in_item; +}; + +#define pos_in_item(path) ((path)->pos_in_item) + +#define INITIALIZE_PATH(var) \ +struct treepath var = {.path_length = ILLEGAL_PATH_ELEMENT_OFFSET, .reada = 0,} + +/* Get path element by path and path position. */ +#define PATH_OFFSET_PELEMENT(path, n_offset) ((path)->path_elements + (n_offset)) + +/* Get buffer header at the path by path and path position. */ +#define PATH_OFFSET_PBUFFER(path, n_offset) (PATH_OFFSET_PELEMENT(path, n_offset)->pe_buffer) + +/* Get position in the element at the path by path and path position. */ +#define PATH_OFFSET_POSITION(path, n_offset) (PATH_OFFSET_PELEMENT(path, n_offset)->pe_position) + +#define PATH_PLAST_BUFFER(path) (PATH_OFFSET_PBUFFER((path), (path)->path_length)) + /* you know, to the person who didn't + write this the macro name does not + at first suggest what it does. + Maybe POSITION_FROM_PATH_END? Or + maybe we should just focus on + dumping paths... -Hans */ +#define PATH_LAST_POSITION(path) (PATH_OFFSET_POSITION((path), (path)->path_length)) + +#define PATH_PITEM_HEAD(path) B_N_PITEM_HEAD(PATH_PLAST_BUFFER(path), PATH_LAST_POSITION(path)) + +/* in do_balance leaf has h == 0 in contrast with path structure, + where root has level == 0. That is why we need these defines */ +#define PATH_H_PBUFFER(path, h) PATH_OFFSET_PBUFFER (path, path->path_length - (h)) /* tb->S[h] */ +#define PATH_H_PPARENT(path, h) PATH_H_PBUFFER (path, (h) + 1) /* tb->F[h] or tb->S[0]->b_parent */ +#define PATH_H_POSITION(path, h) PATH_OFFSET_POSITION (path, path->path_length - (h)) +#define PATH_H_B_ITEM_ORDER(path, h) PATH_H_POSITION(path, h + 1) /* tb->S[h]->b_item_order */ + +#define PATH_H_PATH_OFFSET(path, n_h) ((path)->path_length - (n_h)) + +#define get_last_bh(path) PATH_PLAST_BUFFER(path) +#define get_ih(path) PATH_PITEM_HEAD(path) +#define get_item_pos(path) PATH_LAST_POSITION(path) +#define get_item(path) ((void *)B_N_PITEM(PATH_PLAST_BUFFER(path), PATH_LAST_POSITION (path))) +#define item_moved(ih,path) comp_items(ih, path) +#define path_changed(ih,path) comp_items (ih, path) + +/***************************************************************************/ +/* MISC */ +/***************************************************************************/ + +/* Size of pointer to the unformatted node. */ +#define UNFM_P_SIZE (sizeof(unp_t)) +#define UNFM_P_SHIFT 2 + +// in in-core inode key is stored on le form +#define INODE_PKEY(inode) ((struct reiserfs_key *)(REISERFS_I(inode)->i_key)) + +#define MAX_UL_INT 0xffffffff +#define MAX_INT 0x7ffffff +#define MAX_US_INT 0xffff + +// reiserfs version 2 has max offset 60 bits. Version 1 - 32 bit offset +#define U32_MAX (~(__u32)0) + +static inline loff_t max_reiserfs_offset(struct inode *inode) +{ + if (get_inode_item_key_version(inode) == KEY_FORMAT_3_5) + return (loff_t) U32_MAX; + + return (loff_t) ((~(__u64) 0) >> 4); +} + +/*#define MAX_KEY_UNIQUENESS MAX_UL_INT*/ +#define MAX_KEY_OBJECTID MAX_UL_INT + +#define MAX_B_NUM MAX_UL_INT +#define MAX_FC_NUM MAX_US_INT + +/* the purpose is to detect overflow of an unsigned short */ +#define REISERFS_LINK_MAX (MAX_US_INT - 1000) + +/* The following defines are used in reiserfs_insert_item and reiserfs_append_item */ +#define REISERFS_KERNEL_MEM 0 /* reiserfs kernel memory mode */ +#define REISERFS_USER_MEM 1 /* reiserfs user memory mode */ + +#define fs_generation(s) (REISERFS_SB(s)->s_generation_counter) +#define get_generation(s) atomic_read (&fs_generation(s)) +#define FILESYSTEM_CHANGED_TB(tb) (get_generation((tb)->tb_sb) != (tb)->fs_gen) +#define __fs_changed(gen,s) (gen != get_generation (s)) +#define fs_changed(gen,s) \ +({ \ + reiserfs_cond_resched(s); \ + __fs_changed(gen, s); \ +}) + +/***************************************************************************/ +/* FIXATE NODES */ +/***************************************************************************/ + +#define VI_TYPE_LEFT_MERGEABLE 1 +#define VI_TYPE_RIGHT_MERGEABLE 2 + +/* To make any changes in the tree we always first find node, that + contains item to be changed/deleted or place to insert a new + item. We call this node S. To do balancing we need to decide what + we will shift to left/right neighbor, or to a new node, where new + item will be etc. To make this analysis simpler we build virtual + node. Virtual node is an array of items, that will replace items of + node S. (For instance if we are going to delete an item, virtual + node does not contain it). Virtual node keeps information about + item sizes and types, mergeability of first and last items, sizes + of all entries in directory item. We use this array of items when + calculating what we can shift to neighbors and how many nodes we + have to have if we do not any shiftings, if we shift to left/right + neighbor or to both. */ +struct virtual_item { + int vi_index; // index in the array of item operations + unsigned short vi_type; // left/right mergeability + unsigned short vi_item_len; /* length of item that it will have after balancing */ + struct item_head *vi_ih; + const char *vi_item; // body of item (old or new) + const void *vi_new_data; // 0 always but paste mode + void *vi_uarea; // item specific area +}; + +struct virtual_node { + char *vn_free_ptr; /* this is a pointer to the free space in the buffer */ + unsigned short vn_nr_item; /* number of items in virtual node */ + short vn_size; /* size of node , that node would have if it has unlimited size and no balancing is performed */ + short vn_mode; /* mode of balancing (paste, insert, delete, cut) */ + short vn_affected_item_num; + short vn_pos_in_item; + struct item_head *vn_ins_ih; /* item header of inserted item, 0 for other modes */ + const void *vn_data; + struct virtual_item *vn_vi; /* array of items (including a new one, excluding item to be deleted) */ +}; + +/* used by directory items when creating virtual nodes */ +struct direntry_uarea { + int flags; + __u16 entry_count; + __u16 entry_sizes[1]; +} __attribute__ ((__packed__)); + +/***************************************************************************/ +/* TREE BALANCE */ +/***************************************************************************/ + +/* This temporary structure is used in tree balance algorithms, and + constructed as we go to the extent that its various parts are + needed. It contains arrays of nodes that can potentially be + involved in the balancing of node S, and parameters that define how + each of the nodes must be balanced. Note that in these algorithms + for balancing the worst case is to need to balance the current node + S and the left and right neighbors and all of their parents plus + create a new node. We implement S1 balancing for the leaf nodes + and S0 balancing for the internal nodes (S1 and S0 are defined in + our papers.)*/ + +#define MAX_FREE_BLOCK 7 /* size of the array of buffers to free at end of do_balance */ + +/* maximum number of FEB blocknrs on a single level */ +#define MAX_AMOUNT_NEEDED 2 + +/* someday somebody will prefix every field in this struct with tb_ */ +struct tree_balance { + int tb_mode; + int need_balance_dirty; + struct super_block *tb_sb; + struct reiserfs_transaction_handle *transaction_handle; + struct treepath *tb_path; + struct buffer_head *L[MAX_HEIGHT]; /* array of left neighbors of nodes in the path */ + struct buffer_head *R[MAX_HEIGHT]; /* array of right neighbors of nodes in the path */ + struct buffer_head *FL[MAX_HEIGHT]; /* array of fathers of the left neighbors */ + struct buffer_head *FR[MAX_HEIGHT]; /* array of fathers of the right neighbors */ + struct buffer_head *CFL[MAX_HEIGHT]; /* array of common parents of center node and its left neighbor */ + struct buffer_head *CFR[MAX_HEIGHT]; /* array of common parents of center node and its right neighbor */ + + struct buffer_head *FEB[MAX_FEB_SIZE]; /* array of empty buffers. Number of buffers in array equals + cur_blknum. */ + struct buffer_head *used[MAX_FEB_SIZE]; + struct buffer_head *thrown[MAX_FEB_SIZE]; + int lnum[MAX_HEIGHT]; /* array of number of items which must be + shifted to the left in order to balance the + current node; for leaves includes item that + will be partially shifted; for internal + nodes, it is the number of child pointers + rather than items. It includes the new item + being created. The code sometimes subtracts + one to get the number of wholly shifted + items for other purposes. */ + int rnum[MAX_HEIGHT]; /* substitute right for left in comment above */ + int lkey[MAX_HEIGHT]; /* array indexed by height h mapping the key delimiting L[h] and + S[h] to its item number within the node CFL[h] */ + int rkey[MAX_HEIGHT]; /* substitute r for l in comment above */ + int insert_size[MAX_HEIGHT]; /* the number of bytes by we are trying to add or remove from + S[h]. A negative value means removing. */ + int blknum[MAX_HEIGHT]; /* number of nodes that will replace node S[h] after + balancing on the level h of the tree. If 0 then S is + being deleted, if 1 then S is remaining and no new nodes + are being created, if 2 or 3 then 1 or 2 new nodes is + being created */ + + /* fields that are used only for balancing leaves of the tree */ + int cur_blknum; /* number of empty blocks having been already allocated */ + int s0num; /* number of items that fall into left most node when S[0] splits */ + int s1num; /* number of items that fall into first new node when S[0] splits */ + int s2num; /* number of items that fall into second new node when S[0] splits */ + int lbytes; /* number of bytes which can flow to the left neighbor from the left */ + /* most liquid item that cannot be shifted from S[0] entirely */ + /* if -1 then nothing will be partially shifted */ + int rbytes; /* number of bytes which will flow to the right neighbor from the right */ + /* most liquid item that cannot be shifted from S[0] entirely */ + /* if -1 then nothing will be partially shifted */ + int s1bytes; /* number of bytes which flow to the first new node when S[0] splits */ + /* note: if S[0] splits into 3 nodes, then items do not need to be cut */ + int s2bytes; + struct buffer_head *buf_to_free[MAX_FREE_BLOCK]; /* buffers which are to be freed after do_balance finishes by unfix_nodes */ + char *vn_buf; /* kmalloced memory. Used to create + virtual node and keep map of + dirtied bitmap blocks */ + int vn_buf_size; /* size of the vn_buf */ + struct virtual_node *tb_vn; /* VN starts after bitmap of bitmap blocks */ + + int fs_gen; /* saved value of `reiserfs_generation' counter + see FILESYSTEM_CHANGED() macro in reiserfs_fs.h */ +#ifdef DISPLACE_NEW_PACKING_LOCALITIES + struct in_core_key key; /* key pointer, to pass to block allocator or + another low-level subsystem */ +#endif +}; + +/* These are modes of balancing */ + +/* When inserting an item. */ +#define M_INSERT 'i' +/* When inserting into (directories only) or appending onto an already + existent item. */ +#define M_PASTE 'p' +/* When deleting an item. */ +#define M_DELETE 'd' +/* When truncating an item or removing an entry from a (directory) item. */ +#define M_CUT 'c' + +/* used when balancing on leaf level skipped (in reiserfsck) */ +#define M_INTERNAL 'n' + +/* When further balancing is not needed, then do_balance does not need + to be called. */ +#define M_SKIP_BALANCING 's' +#define M_CONVERT 'v' + +/* modes of leaf_move_items */ +#define LEAF_FROM_S_TO_L 0 +#define LEAF_FROM_S_TO_R 1 +#define LEAF_FROM_R_TO_L 2 +#define LEAF_FROM_L_TO_R 3 +#define LEAF_FROM_S_TO_SNEW 4 + +#define FIRST_TO_LAST 0 +#define LAST_TO_FIRST 1 + +/* used in do_balance for passing parent of node information that has + been gotten from tb struct */ +struct buffer_info { + struct tree_balance *tb; + struct buffer_head *bi_bh; + struct buffer_head *bi_parent; + int bi_position; +}; + +static inline struct super_block *sb_from_tb(struct tree_balance *tb) +{ + return tb ? tb->tb_sb : NULL; +} + +static inline struct super_block *sb_from_bi(struct buffer_info *bi) +{ + return bi ? sb_from_tb(bi->tb) : NULL; +} + +/* there are 4 types of items: stat data, directory item, indirect, direct. ++-------------------+------------+--------------+------------+ +| | k_offset | k_uniqueness | mergeable? | ++-------------------+------------+--------------+------------+ +| stat data | 0 | 0 | no | ++-------------------+------------+--------------+------------+ +| 1st directory item| DOT_OFFSET |DIRENTRY_UNIQUENESS| no | +| non 1st directory | hash value | | yes | +| item | | | | ++-------------------+------------+--------------+------------+ +| indirect item | offset + 1 |TYPE_INDIRECT | if this is not the first indirect item of the object ++-------------------+------------+--------------+------------+ +| direct item | offset + 1 |TYPE_DIRECT | if not this is not the first direct item of the object ++-------------------+------------+--------------+------------+ +*/ + +struct item_operations { + int (*bytes_number) (struct item_head * ih, int block_size); + void (*decrement_key) (struct cpu_key *); + int (*is_left_mergeable) (struct reiserfs_key * ih, + unsigned long bsize); + void (*print_item) (struct item_head *, char *item); + void (*check_item) (struct item_head *, char *item); + + int (*create_vi) (struct virtual_node * vn, struct virtual_item * vi, + int is_affected, int insert_size); + int (*check_left) (struct virtual_item * vi, int free, + int start_skip, int end_skip); + int (*check_right) (struct virtual_item * vi, int free); + int (*part_size) (struct virtual_item * vi, int from, int to); + int (*unit_num) (struct virtual_item * vi); + void (*print_vi) (struct virtual_item * vi); +}; + +extern struct item_operations *item_ops[TYPE_ANY + 1]; + +#define op_bytes_number(ih,bsize) item_ops[le_ih_k_type (ih)]->bytes_number (ih, bsize) +#define op_is_left_mergeable(key,bsize) item_ops[le_key_k_type (le_key_version (key), key)]->is_left_mergeable (key, bsize) +#define op_print_item(ih,item) item_ops[le_ih_k_type (ih)]->print_item (ih, item) +#define op_check_item(ih,item) item_ops[le_ih_k_type (ih)]->check_item (ih, item) +#define op_create_vi(vn,vi,is_affected,insert_size) item_ops[le_ih_k_type ((vi)->vi_ih)]->create_vi (vn,vi,is_affected,insert_size) +#define op_check_left(vi,free,start_skip,end_skip) item_ops[(vi)->vi_index]->check_left (vi, free, start_skip, end_skip) +#define op_check_right(vi,free) item_ops[(vi)->vi_index]->check_right (vi, free) +#define op_part_size(vi,from,to) item_ops[(vi)->vi_index]->part_size (vi, from, to) +#define op_unit_num(vi) item_ops[(vi)->vi_index]->unit_num (vi) +#define op_print_vi(vi) item_ops[(vi)->vi_index]->print_vi (vi) + +#define COMP_SHORT_KEYS comp_short_keys + +/* number of blocks pointed to by the indirect item */ +#define I_UNFM_NUM(ih) (ih_item_len(ih) / UNFM_P_SIZE) + +/* the used space within the unformatted node corresponding to pos within the item pointed to by ih */ +#define I_POS_UNFM_SIZE(ih,pos,size) (((pos) == I_UNFM_NUM(ih) - 1 ) ? (size) - ih_free_space(ih) : (size)) + +/* number of bytes contained by the direct item or the unformatted nodes the indirect item points to */ + +/* get the item header */ +#define B_N_PITEM_HEAD(bh,item_num) ( (struct item_head * )((bh)->b_data + BLKH_SIZE) + (item_num) ) + +/* get key */ +#define B_N_PDELIM_KEY(bh,item_num) ( (struct reiserfs_key * )((bh)->b_data + BLKH_SIZE) + (item_num) ) + +/* get the key */ +#define B_N_PKEY(bh,item_num) ( &(B_N_PITEM_HEAD(bh,item_num)->ih_key) ) + +/* get item body */ +#define B_N_PITEM(bh,item_num) ( (bh)->b_data + ih_location(B_N_PITEM_HEAD((bh),(item_num)))) + +/* get the stat data by the buffer header and the item order */ +#define B_N_STAT_DATA(bh,nr) \ +( (struct stat_data *)((bh)->b_data + ih_location(B_N_PITEM_HEAD((bh),(nr))) ) ) + + /* following defines use reiserfs buffer header and item header */ + +/* get stat-data */ +#define B_I_STAT_DATA(bh, ih) ( (struct stat_data * )((bh)->b_data + ih_location(ih)) ) + +// this is 3976 for size==4096 +#define MAX_DIRECT_ITEM_LEN(size) ((size) - BLKH_SIZE - 2*IH_SIZE - SD_SIZE - UNFM_P_SIZE) + +/* indirect items consist of entries which contain blocknrs, pos + indicates which entry, and B_I_POS_UNFM_POINTER resolves to the + blocknr contained by the entry pos points to */ +#define B_I_POS_UNFM_POINTER(bh,ih,pos) le32_to_cpu(*(((unp_t *)B_I_PITEM(bh,ih)) + (pos))) +#define PUT_B_I_POS_UNFM_POINTER(bh,ih,pos, val) do {*(((unp_t *)B_I_PITEM(bh,ih)) + (pos)) = cpu_to_le32(val); } while (0) + +struct reiserfs_iget_args { + __u32 objectid; + __u32 dirid; +}; + +/***************************************************************************/ +/* FUNCTION DECLARATIONS */ +/***************************************************************************/ + +#define get_journal_desc_magic(bh) (bh->b_data + bh->b_size - 12) + +#define journal_trans_half(blocksize) \ + ((blocksize - sizeof (struct reiserfs_journal_desc) + sizeof (__u32) - 12) / sizeof (__u32)) + +/* journal.c see journal.c for all the comments here */ + +/* first block written in a commit. */ +struct reiserfs_journal_desc { + __le32 j_trans_id; /* id of commit */ + __le32 j_len; /* length of commit. len +1 is the commit block */ + __le32 j_mount_id; /* mount id of this trans */ + __le32 j_realblock[1]; /* real locations for each block */ +}; + +#define get_desc_trans_id(d) le32_to_cpu((d)->j_trans_id) +#define get_desc_trans_len(d) le32_to_cpu((d)->j_len) +#define get_desc_mount_id(d) le32_to_cpu((d)->j_mount_id) + +#define set_desc_trans_id(d,val) do { (d)->j_trans_id = cpu_to_le32 (val); } while (0) +#define set_desc_trans_len(d,val) do { (d)->j_len = cpu_to_le32 (val); } while (0) +#define set_desc_mount_id(d,val) do { (d)->j_mount_id = cpu_to_le32 (val); } while (0) + +/* last block written in a commit */ +struct reiserfs_journal_commit { + __le32 j_trans_id; /* must match j_trans_id from the desc block */ + __le32 j_len; /* ditto */ + __le32 j_realblock[1]; /* real locations for each block */ +}; + +#define get_commit_trans_id(c) le32_to_cpu((c)->j_trans_id) +#define get_commit_trans_len(c) le32_to_cpu((c)->j_len) +#define get_commit_mount_id(c) le32_to_cpu((c)->j_mount_id) + +#define set_commit_trans_id(c,val) do { (c)->j_trans_id = cpu_to_le32 (val); } while (0) +#define set_commit_trans_len(c,val) do { (c)->j_len = cpu_to_le32 (val); } while (0) + +/* this header block gets written whenever a transaction is considered fully flushed, and is more recent than the +** last fully flushed transaction. fully flushed means all the log blocks and all the real blocks are on disk, +** and this transaction does not need to be replayed. +*/ +struct reiserfs_journal_header { + __le32 j_last_flush_trans_id; /* id of last fully flushed transaction */ + __le32 j_first_unflushed_offset; /* offset in the log of where to start replay after a crash */ + __le32 j_mount_id; + /* 12 */ struct journal_params jh_journal; +}; + +/* biggest tunable defines are right here */ +#define JOURNAL_BLOCK_COUNT 8192 /* number of blocks in the journal */ +#define JOURNAL_TRANS_MAX_DEFAULT 1024 /* biggest possible single transaction, don't change for now (8/3/99) */ +#define JOURNAL_TRANS_MIN_DEFAULT 256 +#define JOURNAL_MAX_BATCH_DEFAULT 900 /* max blocks to batch into one transaction, don't make this any bigger than 900 */ +#define JOURNAL_MIN_RATIO 2 +#define JOURNAL_MAX_COMMIT_AGE 30 +#define JOURNAL_MAX_TRANS_AGE 30 +#define JOURNAL_PER_BALANCE_CNT (3 * (MAX_HEIGHT-2) + 9) +#define JOURNAL_BLOCKS_PER_OBJECT(sb) (JOURNAL_PER_BALANCE_CNT * 3 + \ + 2 * (REISERFS_QUOTA_INIT_BLOCKS(sb) + \ + REISERFS_QUOTA_TRANS_BLOCKS(sb))) + +#ifdef CONFIG_QUOTA +#define REISERFS_QUOTA_OPTS ((1 << REISERFS_USRQUOTA) | (1 << REISERFS_GRPQUOTA)) +/* We need to update data and inode (atime) */ +#define REISERFS_QUOTA_TRANS_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? 2 : 0) +/* 1 balancing, 1 bitmap, 1 data per write + stat data update */ +#define REISERFS_QUOTA_INIT_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? \ +(DQUOT_INIT_ALLOC*(JOURNAL_PER_BALANCE_CNT+2)+DQUOT_INIT_REWRITE+1) : 0) +/* same as with INIT */ +#define REISERFS_QUOTA_DEL_BLOCKS(s) (REISERFS_SB(s)->s_mount_opt & REISERFS_QUOTA_OPTS ? \ +(DQUOT_DEL_ALLOC*(JOURNAL_PER_BALANCE_CNT+2)+DQUOT_DEL_REWRITE+1) : 0) +#else +#define REISERFS_QUOTA_TRANS_BLOCKS(s) 0 +#define REISERFS_QUOTA_INIT_BLOCKS(s) 0 +#define REISERFS_QUOTA_DEL_BLOCKS(s) 0 +#endif + +/* both of these can be as low as 1, or as high as you want. The min is the +** number of 4k bitmap nodes preallocated on mount. New nodes are allocated +** as needed, and released when transactions are committed. On release, if +** the current number of nodes is > max, the node is freed, otherwise, +** it is put on a free list for faster use later. +*/ +#define REISERFS_MIN_BITMAP_NODES 10 +#define REISERFS_MAX_BITMAP_NODES 100 + +#define JBH_HASH_SHIFT 13 /* these are based on journal hash size of 8192 */ +#define JBH_HASH_MASK 8191 + +#define _jhashfn(sb,block) \ + (((unsigned long)sb>>L1_CACHE_SHIFT) ^ \ + (((block)<<(JBH_HASH_SHIFT - 6)) ^ ((block) >> 13) ^ ((block) << (JBH_HASH_SHIFT - 12)))) +#define journal_hash(t,sb,block) ((t)[_jhashfn((sb),(block)) & JBH_HASH_MASK]) + +// We need these to make journal.c code more readable +#define journal_find_get_block(s, block) __find_get_block(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize) +#define journal_getblk(s, block) __getblk(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize) +#define journal_bread(s, block) __bread(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize) + +enum reiserfs_bh_state_bits { + BH_JDirty = BH_PrivateStart, /* buffer is in current transaction */ + BH_JDirty_wait, + BH_JNew, /* disk block was taken off free list before + * being in a finished transaction, or + * written to disk. Can be reused immed. */ + BH_JPrepared, + BH_JRestore_dirty, + BH_JTest, // debugging only will go away +}; + +BUFFER_FNS(JDirty, journaled); +TAS_BUFFER_FNS(JDirty, journaled); +BUFFER_FNS(JDirty_wait, journal_dirty); +TAS_BUFFER_FNS(JDirty_wait, journal_dirty); +BUFFER_FNS(JNew, journal_new); +TAS_BUFFER_FNS(JNew, journal_new); +BUFFER_FNS(JPrepared, journal_prepared); +TAS_BUFFER_FNS(JPrepared, journal_prepared); +BUFFER_FNS(JRestore_dirty, journal_restore_dirty); +TAS_BUFFER_FNS(JRestore_dirty, journal_restore_dirty); +BUFFER_FNS(JTest, journal_test); +TAS_BUFFER_FNS(JTest, journal_test); + +/* +** transaction handle which is passed around for all journal calls +*/ +struct reiserfs_transaction_handle { + struct super_block *t_super; /* super for this FS when journal_begin was + called. saves calls to reiserfs_get_super + also used by nested transactions to make + sure they are nesting on the right FS + _must_ be first in the handle + */ + int t_refcount; + int t_blocks_logged; /* number of blocks this writer has logged */ + int t_blocks_allocated; /* number of blocks this writer allocated */ + unsigned int t_trans_id; /* sanity check, equals the current trans id */ + void *t_handle_save; /* save existing current->journal_info */ + unsigned displace_new_blocks:1; /* if new block allocation occurres, that block + should be displaced from others */ + struct list_head t_list; +}; + +/* used to keep track of ordered and tail writes, attached to the buffer + * head through b_journal_head. + */ +struct reiserfs_jh { + struct reiserfs_journal_list *jl; + struct buffer_head *bh; + struct list_head list; +}; + +void reiserfs_free_jh(struct buffer_head *bh); +int reiserfs_add_tail_list(struct inode *inode, struct buffer_head *bh); +int reiserfs_add_ordered_list(struct inode *inode, struct buffer_head *bh); +int journal_mark_dirty(struct reiserfs_transaction_handle *, + struct super_block *, struct buffer_head *bh); + +static inline int reiserfs_file_data_log(struct inode *inode) +{ + if (reiserfs_data_log(inode->i_sb) || + (REISERFS_I(inode)->i_flags & i_data_log)) + return 1; + return 0; +} + +static inline int reiserfs_transaction_running(struct super_block *s) +{ + struct reiserfs_transaction_handle *th = current->journal_info; + if (th && th->t_super == s) + return 1; + if (th && th->t_super == NULL) + BUG(); + return 0; +} + +static inline int reiserfs_transaction_free_space(struct reiserfs_transaction_handle *th) +{ + return th->t_blocks_allocated - th->t_blocks_logged; +} + +struct reiserfs_transaction_handle *reiserfs_persistent_transaction(struct + super_block + *, + int count); +int reiserfs_end_persistent_transaction(struct reiserfs_transaction_handle *); +int reiserfs_commit_page(struct inode *inode, struct page *page, + unsigned from, unsigned to); +int reiserfs_flush_old_commits(struct super_block *); +int reiserfs_commit_for_inode(struct inode *); +int reiserfs_inode_needs_commit(struct inode *); +void reiserfs_update_inode_transaction(struct inode *); +void reiserfs_wait_on_write_block(struct super_block *s); +void reiserfs_block_writes(struct reiserfs_transaction_handle *th); +void reiserfs_allow_writes(struct super_block *s); +void reiserfs_check_lock_depth(struct super_block *s, char *caller); +int reiserfs_prepare_for_journal(struct super_block *, struct buffer_head *bh, + int wait); +void reiserfs_restore_prepared_buffer(struct super_block *, + struct buffer_head *bh); +int journal_init(struct super_block *, const char *j_dev_name, int old_format, + unsigned int); +int journal_release(struct reiserfs_transaction_handle *, struct super_block *); +int journal_release_error(struct reiserfs_transaction_handle *, + struct super_block *); +int journal_end(struct reiserfs_transaction_handle *, struct super_block *, + unsigned long); +int journal_end_sync(struct reiserfs_transaction_handle *, struct super_block *, + unsigned long); +int journal_mark_freed(struct reiserfs_transaction_handle *, + struct super_block *, b_blocknr_t blocknr); +int journal_transaction_should_end(struct reiserfs_transaction_handle *, int); +int reiserfs_in_journal(struct super_block *sb, unsigned int bmap_nr, + int bit_nr, int searchall, b_blocknr_t *next); +int journal_begin(struct reiserfs_transaction_handle *, + struct super_block *sb, unsigned long); +int journal_join_abort(struct reiserfs_transaction_handle *, + struct super_block *sb, unsigned long); +void reiserfs_abort_journal(struct super_block *sb, int errno); +void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...); +int reiserfs_allocate_list_bitmaps(struct super_block *s, + struct reiserfs_list_bitmap *, unsigned int); + +void add_save_link(struct reiserfs_transaction_handle *th, + struct inode *inode, int truncate); +int remove_save_link(struct inode *inode, int truncate); + +/* objectid.c */ +__u32 reiserfs_get_unused_objectid(struct reiserfs_transaction_handle *th); +void reiserfs_release_objectid(struct reiserfs_transaction_handle *th, + __u32 objectid_to_release); +int reiserfs_convert_objectid_map_v1(struct super_block *); + +/* stree.c */ +int B_IS_IN_TREE(const struct buffer_head *); +extern void copy_item_head(struct item_head *to, + const struct item_head *from); + +// first key is in cpu form, second - le +extern int comp_short_keys(const struct reiserfs_key *le_key, + const struct cpu_key *cpu_key); +extern void le_key2cpu_key(struct cpu_key *to, const struct reiserfs_key *from); + +// both are in le form +extern int comp_le_keys(const struct reiserfs_key *, + const struct reiserfs_key *); +extern int comp_short_le_keys(const struct reiserfs_key *, + const struct reiserfs_key *); + +// +// get key version from on disk key - kludge +// +static inline int le_key_version(const struct reiserfs_key *key) +{ + int type; + + type = offset_v2_k_type(&(key->u.k_offset_v2)); + if (type != TYPE_DIRECT && type != TYPE_INDIRECT + && type != TYPE_DIRENTRY) + return KEY_FORMAT_3_5; + + return KEY_FORMAT_3_6; + +} + +static inline void copy_key(struct reiserfs_key *to, + const struct reiserfs_key *from) +{ + memcpy(to, from, KEY_SIZE); +} + +int comp_items(const struct item_head *stored_ih, const struct treepath *path); +const struct reiserfs_key *get_rkey(const struct treepath *chk_path, + const struct super_block *sb); +int search_by_key(struct super_block *, const struct cpu_key *, + struct treepath *, int); +#define search_item(s,key,path) search_by_key (s, key, path, DISK_LEAF_NODE_LEVEL) +int search_for_position_by_key(struct super_block *sb, + const struct cpu_key *cpu_key, + struct treepath *search_path); +extern void decrement_bcount(struct buffer_head *bh); +void decrement_counters_in_path(struct treepath *search_path); +void pathrelse(struct treepath *search_path); +int reiserfs_check_path(struct treepath *p); +void pathrelse_and_restore(struct super_block *s, struct treepath *search_path); + +int reiserfs_insert_item(struct reiserfs_transaction_handle *th, + struct treepath *path, + const struct cpu_key *key, + struct item_head *ih, + struct inode *inode, const char *body); + +int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, + struct treepath *path, + const struct cpu_key *key, + struct inode *inode, + const char *body, int paste_size); + +int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, + struct treepath *path, + struct cpu_key *key, + struct inode *inode, + struct page *page, loff_t new_file_size); + +int reiserfs_delete_item(struct reiserfs_transaction_handle *th, + struct treepath *path, + const struct cpu_key *key, + struct inode *inode, struct buffer_head *un_bh); + +void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th, + struct inode *inode, struct reiserfs_key *key); +int reiserfs_delete_object(struct reiserfs_transaction_handle *th, + struct inode *inode); +int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, + struct inode *inode, struct page *, + int update_timestamps); + +#define i_block_size(inode) ((inode)->i_sb->s_blocksize) +#define file_size(inode) ((inode)->i_size) +#define tail_size(inode) (file_size (inode) & (i_block_size (inode) - 1)) + +#define tail_has_to_be_packed(inode) (have_large_tails ((inode)->i_sb)?\ +!STORE_TAIL_IN_UNFM_S1(file_size (inode), tail_size(inode), inode->i_sb->s_blocksize):have_small_tails ((inode)->i_sb)?!STORE_TAIL_IN_UNFM_S2(file_size (inode), tail_size(inode), inode->i_sb->s_blocksize):0 ) + +void padd_item(char *item, int total_length, int length); + +/* inode.c */ +/* args for the create parameter of reiserfs_get_block */ +#define GET_BLOCK_NO_CREATE 0 /* don't create new blocks or convert tails */ +#define GET_BLOCK_CREATE 1 /* add anything you need to find block */ +#define GET_BLOCK_NO_HOLE 2 /* return -ENOENT for file holes */ +#define GET_BLOCK_READ_DIRECT 4 /* read the tail if indirect item not found */ +#define GET_BLOCK_NO_IMUX 8 /* i_mutex is not held, don't preallocate */ +#define GET_BLOCK_NO_DANGLE 16 /* don't leave any transactions running */ + +void reiserfs_read_locked_inode(struct inode *inode, + struct reiserfs_iget_args *args); +int reiserfs_find_actor(struct inode *inode, void *p); +int reiserfs_init_locked_inode(struct inode *inode, void *p); +void reiserfs_evict_inode(struct inode *inode); +int reiserfs_write_inode(struct inode *inode, struct writeback_control *wbc); +int reiserfs_get_block(struct inode *inode, sector_t block, + struct buffer_head *bh_result, int create); +struct dentry *reiserfs_fh_to_dentry(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type); +struct dentry *reiserfs_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type); +int reiserfs_encode_fh(struct dentry *dentry, __u32 * data, int *lenp, + int connectable); + +int reiserfs_truncate_file(struct inode *, int update_timestamps); +void make_cpu_key(struct cpu_key *cpu_key, struct inode *inode, loff_t offset, + int type, int key_length); +void make_le_item_head(struct item_head *ih, const struct cpu_key *key, + int version, + loff_t offset, int type, int length, int entry_count); +struct inode *reiserfs_iget(struct super_block *s, const struct cpu_key *key); + +struct reiserfs_security_handle; +int reiserfs_new_inode(struct reiserfs_transaction_handle *th, + struct inode *dir, umode_t mode, + const char *symname, loff_t i_size, + struct dentry *dentry, struct inode *inode, + struct reiserfs_security_handle *security); + +void reiserfs_update_sd_size(struct reiserfs_transaction_handle *th, + struct inode *inode, loff_t size); + +static inline void reiserfs_update_sd(struct reiserfs_transaction_handle *th, + struct inode *inode) +{ + reiserfs_update_sd_size(th, inode, inode->i_size); +} + +void sd_attrs_to_i_attrs(__u16 sd_attrs, struct inode *inode); +void i_attrs_to_sd_attrs(struct inode *inode, __u16 * sd_attrs); +int reiserfs_setattr(struct dentry *dentry, struct iattr *attr); + +int __reiserfs_write_begin(struct page *page, unsigned from, unsigned len); + +/* namei.c */ +void set_de_name_and_namelen(struct reiserfs_dir_entry *de); +int search_by_entry_key(struct super_block *sb, const struct cpu_key *key, + struct treepath *path, struct reiserfs_dir_entry *de); +struct dentry *reiserfs_get_parent(struct dentry *); + +#ifdef CONFIG_REISERFS_PROC_INFO +int reiserfs_proc_info_init(struct super_block *sb); +int reiserfs_proc_info_done(struct super_block *sb); +int reiserfs_proc_info_global_init(void); +int reiserfs_proc_info_global_done(void); + +#define PROC_EXP( e ) e + +#define __PINFO( sb ) REISERFS_SB(sb) -> s_proc_info_data +#define PROC_INFO_MAX( sb, field, value ) \ + __PINFO( sb ).field = \ + max( REISERFS_SB( sb ) -> s_proc_info_data.field, value ) +#define PROC_INFO_INC( sb, field ) ( ++ ( __PINFO( sb ).field ) ) +#define PROC_INFO_ADD( sb, field, val ) ( __PINFO( sb ).field += ( val ) ) +#define PROC_INFO_BH_STAT( sb, bh, level ) \ + PROC_INFO_INC( sb, sbk_read_at[ ( level ) ] ); \ + PROC_INFO_ADD( sb, free_at[ ( level ) ], B_FREE_SPACE( bh ) ); \ + PROC_INFO_ADD( sb, items_at[ ( level ) ], B_NR_ITEMS( bh ) ) +#else +static inline int reiserfs_proc_info_init(struct super_block *sb) +{ + return 0; +} + +static inline int reiserfs_proc_info_done(struct super_block *sb) +{ + return 0; +} + +static inline int reiserfs_proc_info_global_init(void) +{ + return 0; +} + +static inline int reiserfs_proc_info_global_done(void) +{ + return 0; +} + +#define PROC_EXP( e ) +#define VOID_V ( ( void ) 0 ) +#define PROC_INFO_MAX( sb, field, value ) VOID_V +#define PROC_INFO_INC( sb, field ) VOID_V +#define PROC_INFO_ADD( sb, field, val ) VOID_V +#define PROC_INFO_BH_STAT(sb, bh, n_node_level) VOID_V +#endif + +/* dir.c */ +extern const struct inode_operations reiserfs_dir_inode_operations; +extern const struct inode_operations reiserfs_symlink_inode_operations; +extern const struct inode_operations reiserfs_special_inode_operations; +extern const struct file_operations reiserfs_dir_operations; +int reiserfs_readdir_dentry(struct dentry *, void *, filldir_t, loff_t *); + +/* tail_conversion.c */ +int direct2indirect(struct reiserfs_transaction_handle *, struct inode *, + struct treepath *, struct buffer_head *, loff_t); +int indirect2direct(struct reiserfs_transaction_handle *, struct inode *, + struct page *, struct treepath *, const struct cpu_key *, + loff_t, char *); +void reiserfs_unmap_buffer(struct buffer_head *); + +/* file.c */ +extern const struct inode_operations reiserfs_file_inode_operations; +extern const struct file_operations reiserfs_file_operations; +extern const struct address_space_operations reiserfs_address_space_operations; + +/* fix_nodes.c */ + +int fix_nodes(int n_op_mode, struct tree_balance *tb, + struct item_head *ins_ih, const void *); +void unfix_nodes(struct tree_balance *); + +/* prints.c */ +void __reiserfs_panic(struct super_block *s, const char *id, + const char *function, const char *fmt, ...) + __attribute__ ((noreturn)); +#define reiserfs_panic(s, id, fmt, args...) \ + __reiserfs_panic(s, id, __func__, fmt, ##args) +void __reiserfs_error(struct super_block *s, const char *id, + const char *function, const char *fmt, ...); +#define reiserfs_error(s, id, fmt, args...) \ + __reiserfs_error(s, id, __func__, fmt, ##args) +void reiserfs_info(struct super_block *s, const char *fmt, ...); +void reiserfs_debug(struct super_block *s, int level, const char *fmt, ...); +void print_indirect_item(struct buffer_head *bh, int item_num); +void store_print_tb(struct tree_balance *tb); +void print_cur_tb(char *mes); +void print_de(struct reiserfs_dir_entry *de); +void print_bi(struct buffer_info *bi, char *mes); +#define PRINT_LEAF_ITEMS 1 /* print all items */ +#define PRINT_DIRECTORY_ITEMS 2 /* print directory items */ +#define PRINT_DIRECT_ITEMS 4 /* print contents of direct items */ +void print_block(struct buffer_head *bh, ...); +void print_bmap(struct super_block *s, int silent); +void print_bmap_block(int i, char *data, int size, int silent); +/*void print_super_block (struct super_block * s, char * mes);*/ +void print_objectid_map(struct super_block *s); +void print_block_head(struct buffer_head *bh, char *mes); +void check_leaf(struct buffer_head *bh); +void check_internal(struct buffer_head *bh); +void print_statistics(struct super_block *s); +char *reiserfs_hashname(int code); + +/* lbalance.c */ +int leaf_move_items(int shift_mode, struct tree_balance *tb, int mov_num, + int mov_bytes, struct buffer_head *Snew); +int leaf_shift_left(struct tree_balance *tb, int shift_num, int shift_bytes); +int leaf_shift_right(struct tree_balance *tb, int shift_num, int shift_bytes); +void leaf_delete_items(struct buffer_info *cur_bi, int last_first, int first, + int del_num, int del_bytes); +void leaf_insert_into_buf(struct buffer_info *bi, int before, + struct item_head *inserted_item_ih, + const char *inserted_item_body, int zeros_number); +void leaf_paste_in_buffer(struct buffer_info *bi, int pasted_item_num, + int pos_in_item, int paste_size, const char *body, + int zeros_number); +void leaf_cut_from_buffer(struct buffer_info *bi, int cut_item_num, + int pos_in_item, int cut_size); +void leaf_paste_entries(struct buffer_info *bi, int item_num, int before, + int new_entry_count, struct reiserfs_de_head *new_dehs, + const char *records, int paste_size); +/* ibalance.c */ +int balance_internal(struct tree_balance *, int, int, struct item_head *, + struct buffer_head **); + +/* do_balance.c */ +void do_balance_mark_leaf_dirty(struct tree_balance *tb, + struct buffer_head *bh, int flag); +#define do_balance_mark_internal_dirty do_balance_mark_leaf_dirty +#define do_balance_mark_sb_dirty do_balance_mark_leaf_dirty + +void do_balance(struct tree_balance *tb, struct item_head *ih, + const char *body, int flag); +void reiserfs_invalidate_buffer(struct tree_balance *tb, + struct buffer_head *bh); + +int get_left_neighbor_position(struct tree_balance *tb, int h); +int get_right_neighbor_position(struct tree_balance *tb, int h); +void replace_key(struct tree_balance *tb, struct buffer_head *, int, + struct buffer_head *, int); +void make_empty_node(struct buffer_info *); +struct buffer_head *get_FEB(struct tree_balance *); + +/* bitmap.c */ + +/* structure contains hints for block allocator, and it is a container for + * arguments, such as node, search path, transaction_handle, etc. */ +struct __reiserfs_blocknr_hint { + struct inode *inode; /* inode passed to allocator, if we allocate unf. nodes */ + sector_t block; /* file offset, in blocks */ + struct in_core_key key; + struct treepath *path; /* search path, used by allocator to deternine search_start by + * various ways */ + struct reiserfs_transaction_handle *th; /* transaction handle is needed to log super blocks and + * bitmap blocks changes */ + b_blocknr_t beg, end; + b_blocknr_t search_start; /* a field used to transfer search start value (block number) + * between different block allocator procedures + * (determine_search_start() and others) */ + int prealloc_size; /* is set in determine_prealloc_size() function, used by underlayed + * function that do actual allocation */ + + unsigned formatted_node:1; /* the allocator uses different polices for getting disk space for + * formatted/unformatted blocks with/without preallocation */ + unsigned preallocate:1; +}; + +typedef struct __reiserfs_blocknr_hint reiserfs_blocknr_hint_t; + +int reiserfs_parse_alloc_options(struct super_block *, char *); +void reiserfs_init_alloc_options(struct super_block *s); + +/* + * given a directory, this will tell you what packing locality + * to use for a new object underneat it. The locality is returned + * in disk byte order (le). + */ +__le32 reiserfs_choose_packing(struct inode *dir); + +int reiserfs_init_bitmap_cache(struct super_block *sb); +void reiserfs_free_bitmap_cache(struct super_block *sb); +void reiserfs_cache_bitmap_metadata(struct super_block *sb, struct buffer_head *bh, struct reiserfs_bitmap_info *info); +struct buffer_head *reiserfs_read_bitmap_block(struct super_block *sb, unsigned int bitmap); +int is_reusable(struct super_block *s, b_blocknr_t block, int bit_value); +void reiserfs_free_block(struct reiserfs_transaction_handle *th, struct inode *, + b_blocknr_t, int for_unformatted); +int reiserfs_allocate_blocknrs(reiserfs_blocknr_hint_t *, b_blocknr_t *, int, + int); +static inline int reiserfs_new_form_blocknrs(struct tree_balance *tb, + b_blocknr_t * new_blocknrs, + int amount_needed) +{ + reiserfs_blocknr_hint_t hint = { + .th = tb->transaction_handle, + .path = tb->tb_path, + .inode = NULL, + .key = tb->key, + .block = 0, + .formatted_node = 1 + }; + return reiserfs_allocate_blocknrs(&hint, new_blocknrs, amount_needed, + 0); +} + +static inline int reiserfs_new_unf_blocknrs(struct reiserfs_transaction_handle + *th, struct inode *inode, + b_blocknr_t * new_blocknrs, + struct treepath *path, + sector_t block) +{ + reiserfs_blocknr_hint_t hint = { + .th = th, + .path = path, + .inode = inode, + .block = block, + .formatted_node = 0, + .preallocate = 0 + }; + return reiserfs_allocate_blocknrs(&hint, new_blocknrs, 1, 0); +} + +#ifdef REISERFS_PREALLOCATE +static inline int reiserfs_new_unf_blocknrs2(struct reiserfs_transaction_handle + *th, struct inode *inode, + b_blocknr_t * new_blocknrs, + struct treepath *path, + sector_t block) +{ + reiserfs_blocknr_hint_t hint = { + .th = th, + .path = path, + .inode = inode, + .block = block, + .formatted_node = 0, + .preallocate = 1 + }; + return reiserfs_allocate_blocknrs(&hint, new_blocknrs, 1, 0); +} + +void reiserfs_discard_prealloc(struct reiserfs_transaction_handle *th, + struct inode *inode); +void reiserfs_discard_all_prealloc(struct reiserfs_transaction_handle *th); +#endif + +/* hashes.c */ +__u32 keyed_hash(const signed char *msg, int len); +__u32 yura_hash(const signed char *msg, int len); +__u32 r5_hash(const signed char *msg, int len); + +#define reiserfs_set_le_bit __set_bit_le +#define reiserfs_test_and_set_le_bit __test_and_set_bit_le +#define reiserfs_clear_le_bit __clear_bit_le +#define reiserfs_test_and_clear_le_bit __test_and_clear_bit_le +#define reiserfs_test_le_bit test_bit_le +#define reiserfs_find_next_zero_le_bit find_next_zero_bit_le + +/* sometimes reiserfs_truncate may require to allocate few new blocks + to perform indirect2direct conversion. People probably used to + think, that truncate should work without problems on a filesystem + without free disk space. They may complain that they can not + truncate due to lack of free disk space. This spare space allows us + to not worry about it. 500 is probably too much, but it should be + absolutely safe */ +#define SPARE_SPACE 500 + +/* prototypes from ioctl.c */ +long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +long reiserfs_compat_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg); +int reiserfs_unpack(struct inode *inode, struct file *filp); diff --git a/fs/reiserfs/resize.c b/fs/reiserfs/resize.c index 7483279b482..9a17f63c3fd 100644 --- a/fs/reiserfs/resize.c +++ b/fs/reiserfs/resize.c @@ -13,8 +13,7 @@ #include <linux/vmalloc.h> #include <linux/string.h> #include <linux/errno.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_fs_sb.h> +#include "reiserfs.h" #include <linux/buffer_head.h> int reiserfs_resize(struct super_block *s, unsigned long block_count_new) diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index 313d39d639e..f8afa4b162b 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -51,7 +51,7 @@ #include <linux/time.h> #include <linux/string.h> #include <linux/pagemap.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/buffer_head.h> #include <linux/quotaops.h> @@ -1284,12 +1284,12 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, ** -clm */ - data = kmap_atomic(un_bh->b_page, KM_USER0); + data = kmap_atomic(un_bh->b_page); off = ((le_ih_k_offset(&s_ih) - 1) & (PAGE_CACHE_SIZE - 1)); memcpy(data + off, B_I_PITEM(PATH_PLAST_BUFFER(path), &s_ih), ret_value); - kunmap_atomic(data, KM_USER0); + kunmap_atomic(data); } /* Perform balancing after all resources have been collected at once. */ do_balance(&s_del_balance, NULL, NULL, M_DELETE); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index e12d8b97cd4..8b7616ef06d 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -16,9 +16,9 @@ #include <linux/vmalloc.h> #include <linux/time.h> #include <asm/uaccess.h> -#include <linux/reiserfs_fs.h> -#include <linux/reiserfs_acl.h> -#include <linux/reiserfs_xattr.h> +#include "reiserfs.h" +#include "acl.h" +#include "xattr.h" #include <linux/init.h> #include <linux/blkdev.h> #include <linux/buffer_head.h> @@ -1874,11 +1874,9 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent) unlock_new_inode(root_inode); } - s->s_root = d_alloc_root(root_inode); - if (!s->s_root) { - iput(root_inode); + s->s_root = d_make_root(root_inode); + if (!s->s_root) goto error; - } // define and initialize hash function sbi->s_hash_function = hash_function(s); if (sbi->s_hash_function == NULL) { diff --git a/fs/reiserfs/tail_conversion.c b/fs/reiserfs/tail_conversion.c index d7f6e51bef2..5e2624d12f7 100644 --- a/fs/reiserfs/tail_conversion.c +++ b/fs/reiserfs/tail_conversion.c @@ -5,7 +5,7 @@ #include <linux/time.h> #include <linux/pagemap.h> #include <linux/buffer_head.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" /* access to tail : when one is going to read tail it must make sure, that is not running. direct2indirect and indirect2direct can not run concurrently */ @@ -128,9 +128,9 @@ int direct2indirect(struct reiserfs_transaction_handle *th, struct inode *inode, if (up_to_date_bh) { unsigned pgoff = (tail_offset + total_tail - 1) & (PAGE_CACHE_SIZE - 1); - char *kaddr = kmap_atomic(up_to_date_bh->b_page, KM_USER0); + char *kaddr = kmap_atomic(up_to_date_bh->b_page); memset(kaddr + pgoff, 0, blk_size - total_tail); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); } REISERFS_I(inode)->i_first_direct_byte = U32_MAX; diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index c24deda8a8b..46fc1c20a6b 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -33,7 +33,7 @@ * The xattrs themselves are protected by the xattr_sem. */ -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/capability.h> #include <linux/dcache.h> #include <linux/namei.h> @@ -43,8 +43,8 @@ #include <linux/file.h> #include <linux/pagemap.h> #include <linux/xattr.h> -#include <linux/reiserfs_xattr.h> -#include <linux/reiserfs_acl.h> +#include "xattr.h" +#include "acl.h" #include <asm/uaccess.h> #include <net/checksum.h> #include <linux/stat.h> diff --git a/fs/reiserfs/xattr.h b/fs/reiserfs/xattr.h new file mode 100644 index 00000000000..f59626c5d33 --- /dev/null +++ b/fs/reiserfs/xattr.h @@ -0,0 +1,122 @@ +#include <linux/reiserfs_xattr.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/rwsem.h> + +struct inode; +struct dentry; +struct iattr; +struct super_block; +struct nameidata; + +int reiserfs_xattr_register_handlers(void) __init; +void reiserfs_xattr_unregister_handlers(void); +int reiserfs_xattr_init(struct super_block *sb, int mount_flags); +int reiserfs_lookup_privroot(struct super_block *sb); +int reiserfs_delete_xattrs(struct inode *inode); +int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); +int reiserfs_permission(struct inode *inode, int mask); + +#ifdef CONFIG_REISERFS_FS_XATTR +#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir) +ssize_t reiserfs_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size); +int reiserfs_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size); +int reiserfs_removexattr(struct dentry *dentry, const char *name); + +int reiserfs_xattr_get(struct inode *, const char *, void *, size_t); +int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int); +int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *, + struct inode *, const char *, const void *, + size_t, int); + +extern const struct xattr_handler reiserfs_xattr_user_handler; +extern const struct xattr_handler reiserfs_xattr_trusted_handler; +extern const struct xattr_handler reiserfs_xattr_security_handler; +#ifdef CONFIG_REISERFS_FS_SECURITY +int reiserfs_security_init(struct inode *dir, struct inode *inode, + const struct qstr *qstr, + struct reiserfs_security_handle *sec); +int reiserfs_security_write(struct reiserfs_transaction_handle *th, + struct inode *inode, + struct reiserfs_security_handle *sec); +void reiserfs_security_free(struct reiserfs_security_handle *sec); +#endif + +static inline int reiserfs_xattrs_initialized(struct super_block *sb) +{ + return REISERFS_SB(sb)->priv_root != NULL; +} + +#define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header)) +static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size) +{ + loff_t ret = 0; + if (reiserfs_file_data_log(inode)) { + ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize); + ret >>= inode->i_sb->s_blocksize_bits; + } + return ret; +} + +/* We may have to create up to 3 objects: xattr root, xattr dir, xattr file. + * Let's try to be smart about it. + * xattr root: We cache it. If it's not cached, we may need to create it. + * xattr dir: If anything has been loaded for this inode, we can set a flag + * saying so. + * xattr file: Since we don't cache xattrs, we can't tell. We always include + * blocks for it. + * + * However, since root and dir can be created between calls - YOU MUST SAVE + * THIS VALUE. + */ +static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode) +{ + size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb); + + if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) { + nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb); + if (!REISERFS_SB(inode->i_sb)->xattr_root->d_inode) + nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb); + } + + return nblocks; +} + +static inline void reiserfs_init_xattr_rwsem(struct inode *inode) +{ + init_rwsem(&REISERFS_I(inode)->i_xattr_sem); +} + +#else + +#define reiserfs_getxattr NULL +#define reiserfs_setxattr NULL +#define reiserfs_listxattr NULL +#define reiserfs_removexattr NULL + +static inline void reiserfs_init_xattr_rwsem(struct inode *inode) +{ +} +#endif /* CONFIG_REISERFS_FS_XATTR */ + +#ifndef CONFIG_REISERFS_FS_SECURITY +static inline int reiserfs_security_init(struct inode *dir, + struct inode *inode, + const struct qstr *qstr, + struct reiserfs_security_handle *sec) +{ + return 0; +} +static inline int +reiserfs_security_write(struct reiserfs_transaction_handle *th, + struct inode *inode, + struct reiserfs_security_handle *sec) +{ + return 0; +} +static inline void reiserfs_security_free(struct reiserfs_security_handle *sec) +{} +#endif diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 6da0396e505..44474f9b990 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -1,14 +1,14 @@ #include <linux/capability.h> #include <linux/fs.h> #include <linux/posix_acl.h> -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/errno.h> #include <linux/pagemap.h> #include <linux/xattr.h> #include <linux/slab.h> #include <linux/posix_acl_xattr.h> -#include <linux/reiserfs_xattr.h> -#include <linux/reiserfs_acl.h> +#include "xattr.h" +#include "acl.h" #include <asm/uaccess.h> static int reiserfs_set_acl(struct reiserfs_transaction_handle *th, diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c index 534668fa41b..800a3cef6f6 100644 --- a/fs/reiserfs/xattr_security.c +++ b/fs/reiserfs/xattr_security.c @@ -1,10 +1,10 @@ -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/errno.h> #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/xattr.h> #include <linux/slab.h> -#include <linux/reiserfs_xattr.h> +#include "xattr.h" #include <linux/security.h> #include <asm/uaccess.h> diff --git a/fs/reiserfs/xattr_trusted.c b/fs/reiserfs/xattr_trusted.c index 9883736ce3e..a0035719f66 100644 --- a/fs/reiserfs/xattr_trusted.c +++ b/fs/reiserfs/xattr_trusted.c @@ -1,10 +1,10 @@ -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/capability.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/xattr.h> -#include <linux/reiserfs_xattr.h> +#include "xattr.h" #include <asm/uaccess.h> static int diff --git a/fs/reiserfs/xattr_user.c b/fs/reiserfs/xattr_user.c index 45ae1a00013..8667491ae7c 100644 --- a/fs/reiserfs/xattr_user.c +++ b/fs/reiserfs/xattr_user.c @@ -1,9 +1,9 @@ -#include <linux/reiserfs_fs.h> +#include "reiserfs.h" #include <linux/errno.h> #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/xattr.h> -#include <linux/reiserfs_xattr.h> +#include "xattr.h" #include <asm/uaccess.h> static int diff --git a/fs/romfs/super.c b/fs/romfs/super.c index bb36ab74eb4..e64f6b5f7ae 100644 --- a/fs/romfs/super.c +++ b/fs/romfs/super.c @@ -538,14 +538,12 @@ static int romfs_fill_super(struct super_block *sb, void *data, int silent) if (IS_ERR(root)) goto error; - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) - goto error_i; + goto error; return 0; -error_i: - iput(root); error: return -EINVAL; error_rsb_inval: diff --git a/fs/select.c b/fs/select.c index d33418fdc85..6fb8943d580 100644 --- a/fs/select.c +++ b/fs/select.c @@ -17,7 +17,7 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/syscalls.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/slab.h> #include <linux/poll.h> #include <linux/personality.h> /* for STICKY_TIMEOUTS */ @@ -223,7 +223,7 @@ static void __pollwait(struct file *filp, wait_queue_head_t *wait_address, get_file(filp); entry->filp = filp; entry->wait_address = wait_address; - entry->key = p->key; + entry->key = p->_key; init_waitqueue_func_entry(&entry->wait, pollwake); entry->wait.private = pwq; add_wait_queue(wait_address, &entry->wait); @@ -386,13 +386,11 @@ get_max: static inline void wait_key_set(poll_table *wait, unsigned long in, unsigned long out, unsigned long bit) { - if (wait) { - wait->key = POLLEX_SET; - if (in & bit) - wait->key |= POLLIN_SET; - if (out & bit) - wait->key |= POLLOUT_SET; - } + wait->_key = POLLEX_SET; + if (in & bit) + wait->_key |= POLLIN_SET; + if (out & bit) + wait->_key |= POLLOUT_SET; } int do_select(int n, fd_set_bits *fds, struct timespec *end_time) @@ -414,7 +412,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time) poll_initwait(&table); wait = &table.pt; if (end_time && !end_time->tv_sec && !end_time->tv_nsec) { - wait = NULL; + wait->_qproc = NULL; timed_out = 1; } @@ -459,17 +457,17 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time) if ((mask & POLLIN_SET) && (in & bit)) { res_in |= bit; retval++; - wait = NULL; + wait->_qproc = NULL; } if ((mask & POLLOUT_SET) && (out & bit)) { res_out |= bit; retval++; - wait = NULL; + wait->_qproc = NULL; } if ((mask & POLLEX_SET) && (ex & bit)) { res_ex |= bit; retval++; - wait = NULL; + wait->_qproc = NULL; } } } @@ -481,7 +479,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time) *rexp = res_ex; cond_resched(); } - wait = NULL; + wait->_qproc = NULL; if (retval || timed_out || signal_pending(current)) break; if (table.error) { @@ -720,7 +718,7 @@ struct poll_list { * interested in events matching the pollfd->events mask, and the result * matching that mask is both recorded in pollfd->revents and returned. The * pwait poll_table will be used by the fd-provided poll handler for waiting, - * if non-NULL. + * if pwait->_qproc is non-NULL. */ static inline unsigned int do_pollfd(struct pollfd *pollfd, poll_table *pwait) { @@ -738,9 +736,7 @@ static inline unsigned int do_pollfd(struct pollfd *pollfd, poll_table *pwait) if (file != NULL) { mask = DEFAULT_POLLMASK; if (file->f_op && file->f_op->poll) { - if (pwait) - pwait->key = pollfd->events | - POLLERR | POLLHUP; + pwait->_key = pollfd->events|POLLERR|POLLHUP; mask = file->f_op->poll(file, pwait); } /* Mask out unneeded events. */ @@ -763,7 +759,7 @@ static int do_poll(unsigned int nfds, struct poll_list *list, /* Optimise the no-wait case */ if (end_time && !end_time->tv_sec && !end_time->tv_nsec) { - pt = NULL; + pt->_qproc = NULL; timed_out = 1; } @@ -781,22 +777,22 @@ static int do_poll(unsigned int nfds, struct poll_list *list, for (; pfd != pfd_end; pfd++) { /* * Fish for events. If we found one, record it - * and kill the poll_table, so we don't + * and kill poll_table->_qproc, so we don't * needlessly register any other waiters after * this. They'll get immediately deregistered * when we break out and return. */ if (do_pollfd(pfd, pt)) { count++; - pt = NULL; + pt->_qproc = NULL; } } } /* * All waiters have already been registered, so don't provide - * a poll_table to them on the next loop iteration. + * a poll_table->_qproc to them on the next loop iteration. */ - pt = NULL; + pt->_qproc = NULL; if (!count) { count = wait->error; if (signal_pending(current)) @@ -912,7 +908,7 @@ static long do_restart_poll(struct restart_block *restart_block) } SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, unsigned int, nfds, - long, timeout_msecs) + int, timeout_msecs) { struct timespec end_time, *to = NULL; int ret; diff --git a/fs/seq_file.c b/fs/seq_file.c index 4023d6be939..0cbd0494b79 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -6,13 +6,29 @@ */ #include <linux/fs.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <asm/uaccess.h> #include <asm/page.h> + +/* + * seq_files have a buffer which can may overflow. When this happens a larger + * buffer is reallocated and all the data will be printed again. + * The overflow state is true when m->count == m->size. + */ +static bool seq_overflow(struct seq_file *m) +{ + return m->count == m->size; +} + +static void seq_set_overflow(struct seq_file *m) +{ + m->count = m->size; +} + /** * seq_open - initialize sequential file * @file: file we initialize @@ -92,7 +108,7 @@ static int traverse(struct seq_file *m, loff_t offset) error = 0; m->count = 0; } - if (m->count == m->size) + if (seq_overflow(m)) goto Eoverflow; if (pos + m->count > offset) { m->from = offset - pos; @@ -140,9 +156,21 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) mutex_lock(&m->lock); + /* + * seq_file->op->..m_start/m_stop/m_next may do special actions + * or optimisations based on the file->f_version, so we want to + * pass the file->f_version to those methods. + * + * seq_file->version is just copy of f_version, and seq_file + * methods can treat it simply as file version. + * It is copied in first and copied out after all operations. + * It is convenient to have it as part of structure to avoid the + * need of passing another argument to all the seq_file methods. + */ + m->version = file->f_version; + /* Don't assume *ppos is where we left it */ if (unlikely(*ppos != m->read_pos)) { - m->read_pos = *ppos; while ((err = traverse(m, *ppos)) == -EAGAIN) ; if (err) { @@ -152,21 +180,11 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) m->index = 0; m->count = 0; goto Done; + } else { + m->read_pos = *ppos; } } - /* - * seq_file->op->..m_start/m_stop/m_next may do special actions - * or optimisations based on the file->f_version, so we want to - * pass the file->f_version to those methods. - * - * seq_file->version is just copy of f_version, and seq_file - * methods can treat it simply as file version. - * It is copied in first and copied out after all operations. - * It is convenient to have it as part of structure to avoid the - * need of passing another argument to all the seq_file methods. - */ - m->version = file->f_version; /* grab buffer if we didn't have one */ if (!m->buf) { m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL); @@ -232,7 +250,7 @@ Fill: break; } err = m->op->show(m, p); - if (m->count == m->size || err) { + if (seq_overflow(m) || err) { m->count = offs; if (likely(err <= 0)) break; @@ -359,7 +377,7 @@ int seq_escape(struct seq_file *m, const char *s, const char *esc) *p++ = '0' + (c & 07); continue; } - m->count = m->size; + seq_set_overflow(m); return -1; } m->count = p - m->buf; @@ -381,7 +399,7 @@ int seq_printf(struct seq_file *m, const char *f, ...) return 0; } } - m->count = m->size; + seq_set_overflow(m); return -1; } EXPORT_SYMBOL(seq_printf); @@ -510,7 +528,7 @@ int seq_bitmap(struct seq_file *m, const unsigned long *bits, return 0; } } - m->count = m->size; + seq_set_overflow(m); return -1; } EXPORT_SYMBOL(seq_bitmap); @@ -526,7 +544,7 @@ int seq_bitmap_list(struct seq_file *m, const unsigned long *bits, return 0; } } - m->count = m->size; + seq_set_overflow(m); return -1; } EXPORT_SYMBOL(seq_bitmap_list); @@ -637,11 +655,63 @@ int seq_puts(struct seq_file *m, const char *s) m->count += len; return 0; } - m->count = m->size; + seq_set_overflow(m); return -1; } EXPORT_SYMBOL(seq_puts); +/* + * A helper routine for putting decimal numbers without rich format of printf(). + * only 'unsigned long long' is supported. + * This routine will put one byte delimiter + number into seq_file. + * This routine is very quick when you show lots of numbers. + * In usual cases, it will be better to use seq_printf(). It's easier to read. + */ +int seq_put_decimal_ull(struct seq_file *m, char delimiter, + unsigned long long num) +{ + int len; + + if (m->count + 2 >= m->size) /* we'll write 2 bytes at least */ + goto overflow; + + if (delimiter) + m->buf[m->count++] = delimiter; + + if (num < 10) { + m->buf[m->count++] = num + '0'; + return 0; + } + + len = num_to_str(m->buf + m->count, m->size - m->count, num); + if (!len) + goto overflow; + m->count += len; + return 0; +overflow: + seq_set_overflow(m); + return -1; +} +EXPORT_SYMBOL(seq_put_decimal_ull); + +int seq_put_decimal_ll(struct seq_file *m, char delimiter, + long long num) +{ + if (num < 0) { + if (m->count + 3 >= m->size) { + seq_set_overflow(m); + return -1; + } + if (delimiter) + m->buf[m->count++] = delimiter; + num = -num; + delimiter = '-'; + } + return seq_put_decimal_ull(m, delimiter, num); + +} +EXPORT_SYMBOL(seq_put_decimal_ll); + /** * seq_write - write arbitrary data to buffer * @seq: seq_file identifying the buffer to which data should be written @@ -657,7 +727,7 @@ int seq_write(struct seq_file *seq, const void *data, size_t len) seq->count += len; return 0; } - seq->count = seq->size; + seq_set_overflow(seq); return -1; } EXPORT_SYMBOL(seq_write); diff --git a/fs/signalfd.c b/fs/signalfd.c index 492465b451d..7ae2a574cb2 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -30,6 +30,21 @@ #include <linux/signalfd.h> #include <linux/syscalls.h> +void signalfd_cleanup(struct sighand_struct *sighand) +{ + wait_queue_head_t *wqh = &sighand->signalfd_wqh; + /* + * The lockless check can race with remove_wait_queue() in progress, + * but in this case its caller should run under rcu_read_lock() and + * sighand_cachep is SLAB_DESTROY_BY_RCU, we can safely return. + */ + if (likely(!waitqueue_active(wqh))) + return; + + /* wait_queue_t->func(POLLFREE) should do remove_wait_queue() */ + wake_up_poll(wqh, POLLHUP | POLLFREE); +} + struct signalfd_ctx { sigset_t sigmask; }; diff --git a/fs/splice.c b/fs/splice.c index 1ec0493266b..5f883de7ef3 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -25,7 +25,7 @@ #include <linux/mm_inline.h> #include <linux/swap.h> #include <linux/writeback.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/syscalls.h> #include <linux/uio.h> #include <linux/security.h> @@ -737,15 +737,12 @@ int pipe_to_file(struct pipe_inode_info *pipe, struct pipe_buffer *buf, goto out; if (buf->page != page) { - /* - * Careful, ->map() uses KM_USER0! - */ char *src = buf->ops->map(pipe, buf, 1); - char *dst = kmap_atomic(page, KM_USER1); + char *dst = kmap_atomic(page); memcpy(dst + offset, src + buf->offset, this_len); flush_dcache_page(page); - kunmap_atomic(dst, KM_USER1); + kunmap_atomic(dst); buf->ops->unmap(pipe, buf, src); } ret = pagecache_write_end(file, mapping, sd->pos, this_len, this_len, diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c index 38bb1c64055..8ca62c28fe1 100644 --- a/fs/squashfs/file.c +++ b/fs/squashfs/file.c @@ -464,10 +464,10 @@ static int squashfs_readpage(struct file *file, struct page *page) if (PageUptodate(push_page)) goto skip_page; - pageaddr = kmap_atomic(push_page, KM_USER0); + pageaddr = kmap_atomic(push_page); squashfs_copy_data(pageaddr, buffer, offset, avail); memset(pageaddr + avail, 0, PAGE_CACHE_SIZE - avail); - kunmap_atomic(pageaddr, KM_USER0); + kunmap_atomic(pageaddr); flush_dcache_page(push_page); SetPageUptodate(push_page); skip_page: @@ -484,9 +484,9 @@ skip_page: error_out: SetPageError(page); out: - pageaddr = kmap_atomic(page, KM_USER0); + pageaddr = kmap_atomic(page); memset(pageaddr, 0, PAGE_CACHE_SIZE); - kunmap_atomic(pageaddr, KM_USER0); + kunmap_atomic(pageaddr); flush_dcache_page(page); if (!PageError(page)) SetPageUptodate(page); diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index ecaa2f7bdb8..970b1167e7c 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -316,11 +316,10 @@ check_directory_table: } insert_inode_hash(root); - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (sb->s_root == NULL) { ERROR("Root inode create failed\n"); err = -ENOMEM; - iput(root); goto failed_mount; } diff --git a/fs/squashfs/symlink.c b/fs/squashfs/symlink.c index 1191817264c..12806dffb34 100644 --- a/fs/squashfs/symlink.c +++ b/fs/squashfs/symlink.c @@ -90,14 +90,14 @@ static int squashfs_symlink_readpage(struct file *file, struct page *page) goto error_out; } - pageaddr = kmap_atomic(page, KM_USER0); + pageaddr = kmap_atomic(page); copied = squashfs_copy_data(pageaddr + bytes, entry, offset, length - bytes); if (copied == length - bytes) memset(pageaddr + length, 0, PAGE_CACHE_SIZE - length); else block = entry->next_index; - kunmap_atomic(pageaddr, KM_USER0); + kunmap_atomic(pageaddr); squashfs_cache_put(entry); } diff --git a/fs/stack.c b/fs/stack.c index 9c11519245a..5b5388250e2 100644 --- a/fs/stack.c +++ b/fs/stack.c @@ -1,4 +1,4 @@ -#include <linux/module.h> +#include <linux/export.h> #include <linux/fs.h> #include <linux/fs_stack.h> diff --git a/fs/stat.c b/fs/stat.c index 8806b8997d2..c733dc5753a 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -4,7 +4,7 @@ * Copyright (C) 1991, 1992 Linus Torvalds */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/mm.h> #include <linux/errno.h> #include <linux/file.h> @@ -307,7 +307,7 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname, if (inode->i_op->readlink) { error = security_inode_readlink(path.dentry); if (!error) { - touch_atime(path.mnt, path.dentry); + touch_atime(&path); error = inode->i_op->readlink(path.dentry, buf, bufsiz); } diff --git a/fs/statfs.c b/fs/statfs.c index 2aa6a22e0be..43e6b6fe4e8 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -1,5 +1,5 @@ #include <linux/syscalls.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/fs.h> #include <linux/file.h> #include <linux/mount.h> diff --git a/fs/super.c b/fs/super.c index 6015c02296b..cf001775617 100644 --- a/fs/super.c +++ b/fs/super.c @@ -20,7 +20,7 @@ * Heavily rewritten for 'one fs - one tree' dcache architecture. AV, Mar 2000 */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/slab.h> #include <linux/acct.h> #include <linux/blkdev.h> @@ -32,6 +32,7 @@ #include <linux/backing-dev.h> #include <linux/rculist_bl.h> #include <linux/cleancache.h> +#include <linux/fsnotify.h> #include "internal.h" @@ -250,7 +251,7 @@ void deactivate_locked_super(struct super_block *s) { struct file_system_type *fs = s->s_type; if (atomic_dec_and_test(&s->s_active)) { - cleancache_flush_fs(s); + cleancache_invalidate_fs(s); fs->kill_sb(s); /* caches are now gone, we can safely kill the shrinker now */ @@ -634,6 +635,28 @@ rescan: EXPORT_SYMBOL(get_super); /** + * get_super_thawed - get thawed superblock of a device + * @bdev: device to get the superblock for + * + * Scans the superblock list and finds the superblock of the file system + * mounted on the device. The superblock is returned once it is thawed + * (or immediately if it was not frozen). %NULL is returned if no match + * is found. + */ +struct super_block *get_super_thawed(struct block_device *bdev) +{ + while (1) { + struct super_block *s = get_super(bdev); + if (!s || s->s_frozen == SB_UNFROZEN) + return s; + up_read(&s->s_umount); + vfs_check_frozen(s, SB_FREEZE_WRITE); + put_super(s); + } +} +EXPORT_SYMBOL(get_super_thawed); + +/** * get_active_super - get an active reference to the superblock of a device * @bdev: device to get the superblock for * diff --git a/fs/sync.c b/fs/sync.c index f3501ef3923..0e8db939d96 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -6,7 +6,7 @@ #include <linux/file.h> #include <linux/fs.h> #include <linux/slab.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/namei.h> #include <linux/sched.h> #include <linux/writeback.h> diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 7fdf6a7b743..2a7a3f5d1ca 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -22,76 +22,103 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/security.h> +#include <linux/hash.h> #include "sysfs.h" DEFINE_MUTEX(sysfs_mutex); DEFINE_SPINLOCK(sysfs_assoc_lock); +#define to_sysfs_dirent(X) rb_entry((X), struct sysfs_dirent, s_rb); + static DEFINE_SPINLOCK(sysfs_ino_lock); static DEFINE_IDA(sysfs_ino_ida); /** - * sysfs_link_sibling - link sysfs_dirent into sibling list + * sysfs_name_hash + * @ns: Namespace tag to hash + * @name: Null terminated string to hash + * + * Returns 31 bit hash of ns + name (so it fits in an off_t ) + */ +static unsigned int sysfs_name_hash(const void *ns, const char *name) +{ + unsigned long hash = init_name_hash(); + unsigned int len = strlen(name); + while (len--) + hash = partial_name_hash(*name++, hash); + hash = ( end_name_hash(hash) ^ hash_ptr( (void *)ns, 31 ) ); + hash &= 0x7fffffffU; + /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ + if (hash < 1) + hash += 2; + if (hash >= INT_MAX) + hash = INT_MAX - 1; + return hash; +} + +static int sysfs_name_compare(unsigned int hash, const void *ns, + const char *name, const struct sysfs_dirent *sd) +{ + if (hash != sd->s_hash) + return hash - sd->s_hash; + if (ns != sd->s_ns) + return ns - sd->s_ns; + return strcmp(name, sd->s_name); +} + +static int sysfs_sd_compare(const struct sysfs_dirent *left, + const struct sysfs_dirent *right) +{ + return sysfs_name_compare(left->s_hash, left->s_ns, left->s_name, + right); +} + +/** + * sysfs_link_subling - link sysfs_dirent into sibling rbtree * @sd: sysfs_dirent of interest * - * Link @sd into its sibling list which starts from + * Link @sd into its sibling rbtree which starts from * sd->s_parent->s_dir.children. * * Locking: * mutex_lock(sysfs_mutex) + * + * RETURNS: + * 0 on susccess -EEXIST on failure. */ -static void sysfs_link_sibling(struct sysfs_dirent *sd) +static int sysfs_link_sibling(struct sysfs_dirent *sd) { - struct sysfs_dirent *parent_sd = sd->s_parent; - - struct rb_node **p; - struct rb_node *parent; + struct rb_node **node = &sd->s_parent->s_dir.children.rb_node; + struct rb_node *parent = NULL; if (sysfs_type(sd) == SYSFS_DIR) - parent_sd->s_dir.subdirs++; + sd->s_parent->s_dir.subdirs++; - p = &parent_sd->s_dir.inode_tree.rb_node; - parent = NULL; - while (*p) { - parent = *p; -#define node rb_entry(parent, struct sysfs_dirent, inode_node) - if (sd->s_ino < node->s_ino) { - p = &node->inode_node.rb_left; - } else if (sd->s_ino > node->s_ino) { - p = &node->inode_node.rb_right; - } else { - printk(KERN_CRIT "sysfs: inserting duplicate inode '%lx'\n", - (unsigned long) sd->s_ino); - BUG(); - } -#undef node - } - rb_link_node(&sd->inode_node, parent, p); - rb_insert_color(&sd->inode_node, &parent_sd->s_dir.inode_tree); + while (*node) { + struct sysfs_dirent *pos; + int result; - p = &parent_sd->s_dir.name_tree.rb_node; - parent = NULL; - while (*p) { - int c; - parent = *p; -#define node rb_entry(parent, struct sysfs_dirent, name_node) - c = strcmp(sd->s_name, node->s_name); - if (c < 0) { - p = &node->name_node.rb_left; - } else { - p = &node->name_node.rb_right; - } -#undef node + pos = to_sysfs_dirent(*node); + parent = *node; + result = sysfs_sd_compare(sd, pos); + if (result < 0) + node = &pos->s_rb.rb_left; + else if (result > 0) + node = &pos->s_rb.rb_right; + else + return -EEXIST; } - rb_link_node(&sd->name_node, parent, p); - rb_insert_color(&sd->name_node, &parent_sd->s_dir.name_tree); + /* add new node and rebalance the tree */ + rb_link_node(&sd->s_rb, parent, node); + rb_insert_color(&sd->s_rb, &sd->s_parent->s_dir.children); + return 0; } /** - * sysfs_unlink_sibling - unlink sysfs_dirent from sibling list + * sysfs_unlink_sibling - unlink sysfs_dirent from sibling rbtree * @sd: sysfs_dirent of interest * - * Unlink @sd from its sibling list which starts from + * Unlink @sd from its sibling rbtree which starts from * sd->s_parent->s_dir.children. * * Locking: @@ -102,8 +129,7 @@ static void sysfs_unlink_sibling(struct sysfs_dirent *sd) if (sysfs_type(sd) == SYSFS_DIR) sd->s_parent->s_dir.subdirs--; - rb_erase(&sd->inode_node, &sd->s_parent->s_dir.inode_tree); - rb_erase(&sd->name_node, &sd->s_parent->s_dir.name_tree); + rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children); } /** @@ -198,7 +224,7 @@ static void sysfs_deactivate(struct sysfs_dirent *sd) rwsem_release(&sd->dep_map, 1, _RET_IP_); } -static int sysfs_alloc_ino(ino_t *pino) +static int sysfs_alloc_ino(unsigned int *pino) { int ino, rc; @@ -217,7 +243,7 @@ static int sysfs_alloc_ino(ino_t *pino) return rc; } -static void sysfs_free_ino(ino_t ino) +static void sysfs_free_ino(unsigned int ino) { spin_lock(&sysfs_ino_lock); ida_remove(&sysfs_ino_ida, ino); @@ -402,6 +428,7 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt, int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) { struct sysfs_inode_attrs *ps_iattr; + int ret; if (!!sysfs_ns_type(acxt->parent_sd) != !!sd->s_ns) { WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", @@ -410,12 +437,12 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) return -EINVAL; } - if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name)) - return -EEXIST; - + sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name); sd->s_parent = sysfs_get(acxt->parent_sd); - sysfs_link_sibling(sd); + ret = sysfs_link_sibling(sd); + if (ret) + return ret; /* Update timestamps on the parent */ ps_iattr = acxt->parent_sd->s_iattr; @@ -565,8 +592,8 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, const void *ns, const unsigned char *name) { - struct rb_node *p = parent_sd->s_dir.name_tree.rb_node; - struct sysfs_dirent *found = NULL; + struct rb_node *node = parent_sd->s_dir.children.rb_node; + unsigned int hash; if (!!sysfs_ns_type(parent_sd) != !!ns) { WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", @@ -575,33 +602,21 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, return NULL; } - while (p) { - int c; -#define node rb_entry(p, struct sysfs_dirent, name_node) - c = strcmp(name, node->s_name); - if (c < 0) { - p = node->name_node.rb_left; - } else if (c > 0) { - p = node->name_node.rb_right; - } else { - found = node; - p = node->name_node.rb_left; - } -#undef node - } + hash = sysfs_name_hash(ns, name); + while (node) { + struct sysfs_dirent *sd; + int result; - if (found) { - while (found->s_ns != ns) { - p = rb_next(&found->name_node); - if (!p) - return NULL; - found = rb_entry(p, struct sysfs_dirent, name_node); - if (strcmp(name, found->s_name)) - return NULL; - } + sd = to_sysfs_dirent(node); + result = sysfs_name_compare(hash, ns, name, sd); + if (result < 0) + node = node->rb_left; + else if (result > 0) + node = node->rb_right; + else + return sd; } - - return found; + return NULL; } /** @@ -804,9 +819,9 @@ static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd) pr_debug("sysfs %s: removing dir\n", dir_sd->s_name); sysfs_addrm_start(&acxt, dir_sd); - pos = rb_first(&dir_sd->s_dir.inode_tree); + pos = rb_first(&dir_sd->s_dir.children); while (pos) { - struct sysfs_dirent *sd = rb_entry(pos, struct sysfs_dirent, inode_node); + struct sysfs_dirent *sd = to_sysfs_dirent(pos); pos = rb_next(pos); if (sysfs_type(sd) != SYSFS_DIR) sysfs_remove_one(&acxt, sd); @@ -863,6 +878,7 @@ int sysfs_rename(struct sysfs_dirent *sd, dup_name = sd->s_name; sd->s_name = new_name; + sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name); } /* Move to the appropriate place in the appropriate directories rbtree. */ @@ -919,38 +935,36 @@ static int sysfs_dir_release(struct inode *inode, struct file *filp) } static struct sysfs_dirent *sysfs_dir_pos(const void *ns, - struct sysfs_dirent *parent_sd, ino_t ino, struct sysfs_dirent *pos) + struct sysfs_dirent *parent_sd, loff_t hash, struct sysfs_dirent *pos) { if (pos) { int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) && pos->s_parent == parent_sd && - ino == pos->s_ino; + hash == pos->s_hash; sysfs_put(pos); if (!valid) pos = NULL; } - if (!pos && (ino > 1) && (ino < INT_MAX)) { - struct rb_node *p = parent_sd->s_dir.inode_tree.rb_node; - while (p) { -#define node rb_entry(p, struct sysfs_dirent, inode_node) - if (ino < node->s_ino) { - pos = node; - p = node->inode_node.rb_left; - } else if (ino > node->s_ino) { - p = node->inode_node.rb_right; - } else { - pos = node; + if (!pos && (hash > 1) && (hash < INT_MAX)) { + struct rb_node *node = parent_sd->s_dir.children.rb_node; + while (node) { + pos = to_sysfs_dirent(node); + + if (hash < pos->s_hash) + node = node->rb_left; + else if (hash > pos->s_hash) + node = node->rb_right; + else break; - } -#undef node } } + /* Skip over entries in the wrong namespace */ while (pos && pos->s_ns != ns) { - struct rb_node *p = rb_next(&pos->inode_node); - if (!p) + struct rb_node *node = rb_next(&pos->s_rb); + if (!node) pos = NULL; else - pos = rb_entry(p, struct sysfs_dirent, inode_node); + pos = to_sysfs_dirent(node); } return pos; } @@ -960,11 +974,11 @@ static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns, { pos = sysfs_dir_pos(ns, parent_sd, ino, pos); if (pos) do { - struct rb_node *p = rb_next(&pos->inode_node); - if (!p) + struct rb_node *node = rb_next(&pos->s_rb); + if (!node) pos = NULL; else - pos = rb_entry(p, struct sysfs_dirent, inode_node); + pos = to_sysfs_dirent(node); } while (pos && pos->s_ns != ns); return pos; } @@ -1006,7 +1020,7 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir) len = strlen(name); ino = pos->s_ino; type = dt_type(pos); - filp->f_pos = ino; + filp->f_pos = pos->s_hash; filp->private_data = sysfs_get(pos); mutex_unlock(&sysfs_mutex); diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 62f4fb37789..00012e31829 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -493,6 +493,12 @@ int sysfs_attr_ns(struct kobject *kobj, const struct attribute *attr, const void *ns = NULL; int err; + if (!dir_sd) { + WARN(1, KERN_ERR "sysfs: kobject %s without dirent\n", + kobject_name(kobj)); + return -ENOENT; + } + err = 0; if (!sysfs_ns_type(dir_sd)) goto out; diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index 4a802b4a905..feb2d69396c 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -136,12 +136,13 @@ static int sysfs_sd_setsecdata(struct sysfs_dirent *sd, void **secdata, u32 *sec void *old_secdata; size_t old_secdata_len; - iattrs = sd->s_iattr; - if (!iattrs) - iattrs = sysfs_init_inode_attrs(sd); - if (!iattrs) - return -ENOMEM; + if (!sd->s_iattr) { + sd->s_iattr = sysfs_init_inode_attrs(sd); + if (!sd->s_iattr) + return -ENOMEM; + } + iattrs = sd->s_iattr; old_secdata = iattrs->ia_secdata; old_secdata_len = iattrs->ia_secdata_len; @@ -318,8 +319,11 @@ int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const void *ns, const cha struct sysfs_addrm_cxt acxt; struct sysfs_dirent *sd; - if (!dir_sd) + if (!dir_sd) { + WARN(1, KERN_WARNING "sysfs: can not remove '%s', no directory\n", + name); return -ENOENT; + } sysfs_addrm_start(&acxt, dir_sd); diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index e34f0d99ea4..52c3bdb66a8 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -36,7 +36,7 @@ struct sysfs_dirent sysfs_root = { .s_name = "", .s_count = ATOMIC_INIT(1), .s_flags = SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT), - .s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, + .s_mode = S_IFDIR | S_IRUGO | S_IXUGO, .s_ino = 1, }; @@ -61,10 +61,9 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent) } /* instantiate and link root dentry */ - root = d_alloc_root(inode); + root = d_make_root(inode); if (!root) { pr_debug("%s: could not get root dentry!\n",__func__); - iput(inode); return -ENOMEM; } root->d_fsdata = &sysfs_root; diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 7484a36ee67..661a9639570 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -20,9 +20,8 @@ struct sysfs_elem_dir { struct kobject *kobj; unsigned long subdirs; - - struct rb_root inode_tree; - struct rb_root name_tree; + /* children rbtree starts here and goes through sd->s_rb */ + struct rb_root children; }; struct sysfs_elem_symlink { @@ -62,8 +61,7 @@ struct sysfs_dirent { struct sysfs_dirent *s_parent; const char *s_name; - struct rb_node inode_node; - struct rb_node name_node; + struct rb_node s_rb; union { struct completion *completion; @@ -71,6 +69,7 @@ struct sysfs_dirent { } u; const void *s_ns; /* namespace tag */ + unsigned int s_hash; /* ns + name hash */ union { struct sysfs_elem_dir s_dir; struct sysfs_elem_symlink s_symlink; @@ -78,9 +77,9 @@ struct sysfs_dirent { struct sysfs_elem_bin_attr s_bin_attr; }; - unsigned int s_flags; + unsigned short s_flags; umode_t s_mode; - ino_t s_ino; + unsigned int s_ino; struct sysfs_inode_attrs *s_iattr; }; @@ -95,11 +94,11 @@ struct sysfs_dirent { #define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR) /* identify any namespace tag on sysfs_dirents */ -#define SYSFS_NS_TYPE_MASK 0xff00 +#define SYSFS_NS_TYPE_MASK 0xf00 #define SYSFS_NS_TYPE_SHIFT 8 #define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK) -#define SYSFS_FLAG_REMOVED 0x020000 +#define SYSFS_FLAG_REMOVED 0x02000 static inline unsigned int sysfs_type(struct sysfs_dirent *sd) { diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c index b217797e621..d7466e29361 100644 --- a/fs/sysv/namei.c +++ b/fs/sysv/namei.c @@ -121,9 +121,6 @@ static int sysv_link(struct dentry * old_dentry, struct inode * dir, { struct inode *inode = old_dentry->d_inode; - if (inode->i_nlink >= SYSV_SB(inode->i_sb)->s_link_max) - return -EMLINK; - inode->i_ctime = CURRENT_TIME_SEC; inode_inc_link_count(inode); ihold(inode); @@ -134,10 +131,8 @@ static int sysv_link(struct dentry * old_dentry, struct inode * dir, static int sysv_mkdir(struct inode * dir, struct dentry *dentry, umode_t mode) { struct inode * inode; - int err = -EMLINK; + int err; - if (dir->i_nlink >= SYSV_SB(dir->i_sb)->s_link_max) - goto out; inode_inc_link_count(dir); inode = sysv_new_inode(dir, S_IFDIR|mode); @@ -251,11 +246,6 @@ static int sysv_rename(struct inode * old_dir, struct dentry * old_dentry, drop_nlink(new_inode); inode_dec_link_count(new_inode); } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= SYSV_SB(new_dir->i_sb)->s_link_max) - goto out_dir; - } err = sysv_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/sysv/super.c b/fs/sysv/super.c index f60c196913e..7491c33b646 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -44,7 +44,7 @@ enum { JAN_1_1980 = (10*365 + 2) * 24 * 60 * 60 }; -static void detected_xenix(struct sysv_sb_info *sbi) +static void detected_xenix(struct sysv_sb_info *sbi, unsigned *max_links) { struct buffer_head *bh1 = sbi->s_bh1; struct buffer_head *bh2 = sbi->s_bh2; @@ -59,7 +59,7 @@ static void detected_xenix(struct sysv_sb_info *sbi) sbd2 = (struct xenix_super_block *) (bh2->b_data - 512); } - sbi->s_link_max = XENIX_LINK_MAX; + *max_links = XENIX_LINK_MAX; sbi->s_fic_size = XENIX_NICINOD; sbi->s_flc_size = XENIX_NICFREE; sbi->s_sbd1 = (char *)sbd1; @@ -75,7 +75,7 @@ static void detected_xenix(struct sysv_sb_info *sbi) sbi->s_nzones = fs32_to_cpu(sbi, sbd1->s_fsize); } -static void detected_sysv4(struct sysv_sb_info *sbi) +static void detected_sysv4(struct sysv_sb_info *sbi, unsigned *max_links) { struct sysv4_super_block * sbd; struct buffer_head *bh1 = sbi->s_bh1; @@ -86,7 +86,7 @@ static void detected_sysv4(struct sysv_sb_info *sbi) else sbd = (struct sysv4_super_block *) bh2->b_data; - sbi->s_link_max = SYSV_LINK_MAX; + *max_links = SYSV_LINK_MAX; sbi->s_fic_size = SYSV_NICINOD; sbi->s_flc_size = SYSV_NICFREE; sbi->s_sbd1 = (char *)sbd; @@ -103,7 +103,7 @@ static void detected_sysv4(struct sysv_sb_info *sbi) sbi->s_nzones = fs32_to_cpu(sbi, sbd->s_fsize); } -static void detected_sysv2(struct sysv_sb_info *sbi) +static void detected_sysv2(struct sysv_sb_info *sbi, unsigned *max_links) { struct sysv2_super_block *sbd; struct buffer_head *bh1 = sbi->s_bh1; @@ -114,7 +114,7 @@ static void detected_sysv2(struct sysv_sb_info *sbi) else sbd = (struct sysv2_super_block *) bh2->b_data; - sbi->s_link_max = SYSV_LINK_MAX; + *max_links = SYSV_LINK_MAX; sbi->s_fic_size = SYSV_NICINOD; sbi->s_flc_size = SYSV_NICFREE; sbi->s_sbd1 = (char *)sbd; @@ -131,14 +131,14 @@ static void detected_sysv2(struct sysv_sb_info *sbi) sbi->s_nzones = fs32_to_cpu(sbi, sbd->s_fsize); } -static void detected_coherent(struct sysv_sb_info *sbi) +static void detected_coherent(struct sysv_sb_info *sbi, unsigned *max_links) { struct coh_super_block * sbd; struct buffer_head *bh1 = sbi->s_bh1; sbd = (struct coh_super_block *) bh1->b_data; - sbi->s_link_max = COH_LINK_MAX; + *max_links = COH_LINK_MAX; sbi->s_fic_size = COH_NICINOD; sbi->s_flc_size = COH_NICFREE; sbi->s_sbd1 = (char *)sbd; @@ -154,12 +154,12 @@ static void detected_coherent(struct sysv_sb_info *sbi) sbi->s_nzones = fs32_to_cpu(sbi, sbd->s_fsize); } -static void detected_v7(struct sysv_sb_info *sbi) +static void detected_v7(struct sysv_sb_info *sbi, unsigned *max_links) { struct buffer_head *bh2 = sbi->s_bh2; struct v7_super_block *sbd = (struct v7_super_block *)bh2->b_data; - sbi->s_link_max = V7_LINK_MAX; + *max_links = V7_LINK_MAX; sbi->s_fic_size = V7_NICINOD; sbi->s_flc_size = V7_NICFREE; sbi->s_sbd1 = (char *)sbd; @@ -290,7 +290,7 @@ static char *flavour_names[] = { [FSTYPE_AFS] = "AFS", }; -static void (*flavour_setup[])(struct sysv_sb_info *) = { +static void (*flavour_setup[])(struct sysv_sb_info *, unsigned *) = { [FSTYPE_XENIX] = detected_xenix, [FSTYPE_SYSV4] = detected_sysv4, [FSTYPE_SYSV2] = detected_sysv2, @@ -310,7 +310,7 @@ static int complete_read_super(struct super_block *sb, int silent, int size) sbi->s_firstinodezone = 2; - flavour_setup[sbi->s_type](sbi); + flavour_setup[sbi->s_type](sbi, &sb->s_max_links); sbi->s_truncate = 1; sbi->s_ndatazones = sbi->s_nzones - sbi->s_firstdatazone; @@ -341,9 +341,8 @@ static int complete_read_super(struct super_block *sb, int silent, int size) printk("SysV FS: get root inode failed\n"); return 0; } - sb->s_root = d_alloc_root(root_inode); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) { - iput(root_inode); printk("SysV FS: get root dentry failed\n"); return 0; } diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h index 0e4b821c569..11b07672f6c 100644 --- a/fs/sysv/sysv.h +++ b/fs/sysv/sysv.h @@ -24,7 +24,6 @@ struct sysv_sb_info { char s_bytesex; /* bytesex (le/be/pdp) */ char s_truncate; /* if 1: names > SYSV_NAMELEN chars are truncated */ /* if 0: they are disallowed (ENAMETOOLONG) */ - nlink_t s_link_max; /* max number of hard links to a file */ unsigned int s_inodes_per_block; /* number of inodes per block */ unsigned int s_inodes_per_block_1; /* inodes_per_block - 1 */ unsigned int s_inodes_per_block_bits; /* log2(inodes_per_block) */ diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index f922cbacdb9..1934084e208 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -36,7 +36,7 @@ #ifdef CONFIG_UBIFS_FS_DEBUG -DEFINE_SPINLOCK(dbg_lock); +static DEFINE_SPINLOCK(dbg_lock); static const char *get_key_fmt(int fmt) { @@ -221,15 +221,15 @@ const char *dbg_jhead(int jhead) static void dump_ch(const struct ubifs_ch *ch) { - printk(KERN_DEBUG "\tmagic %#x\n", le32_to_cpu(ch->magic)); - printk(KERN_DEBUG "\tcrc %#x\n", le32_to_cpu(ch->crc)); - printk(KERN_DEBUG "\tnode_type %d (%s)\n", ch->node_type, + printk(KERN_ERR "\tmagic %#x\n", le32_to_cpu(ch->magic)); + printk(KERN_ERR "\tcrc %#x\n", le32_to_cpu(ch->crc)); + printk(KERN_ERR "\tnode_type %d (%s)\n", ch->node_type, dbg_ntype(ch->node_type)); - printk(KERN_DEBUG "\tgroup_type %d (%s)\n", ch->group_type, + printk(KERN_ERR "\tgroup_type %d (%s)\n", ch->group_type, dbg_gtype(ch->group_type)); - printk(KERN_DEBUG "\tsqnum %llu\n", + printk(KERN_ERR "\tsqnum %llu\n", (unsigned long long)le64_to_cpu(ch->sqnum)); - printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len)); + printk(KERN_ERR "\tlen %u\n", le32_to_cpu(ch->len)); } void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode) @@ -240,43 +240,43 @@ void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode) struct ubifs_dent_node *dent, *pdent = NULL; int count = 2; - printk(KERN_DEBUG "Dump in-memory inode:"); - printk(KERN_DEBUG "\tinode %lu\n", inode->i_ino); - printk(KERN_DEBUG "\tsize %llu\n", + printk(KERN_ERR "Dump in-memory inode:"); + printk(KERN_ERR "\tinode %lu\n", inode->i_ino); + printk(KERN_ERR "\tsize %llu\n", (unsigned long long)i_size_read(inode)); - printk(KERN_DEBUG "\tnlink %u\n", inode->i_nlink); - printk(KERN_DEBUG "\tuid %u\n", (unsigned int)inode->i_uid); - printk(KERN_DEBUG "\tgid %u\n", (unsigned int)inode->i_gid); - printk(KERN_DEBUG "\tatime %u.%u\n", + printk(KERN_ERR "\tnlink %u\n", inode->i_nlink); + printk(KERN_ERR "\tuid %u\n", (unsigned int)inode->i_uid); + printk(KERN_ERR "\tgid %u\n", (unsigned int)inode->i_gid); + printk(KERN_ERR "\tatime %u.%u\n", (unsigned int)inode->i_atime.tv_sec, (unsigned int)inode->i_atime.tv_nsec); - printk(KERN_DEBUG "\tmtime %u.%u\n", + printk(KERN_ERR "\tmtime %u.%u\n", (unsigned int)inode->i_mtime.tv_sec, (unsigned int)inode->i_mtime.tv_nsec); - printk(KERN_DEBUG "\tctime %u.%u\n", + printk(KERN_ERR "\tctime %u.%u\n", (unsigned int)inode->i_ctime.tv_sec, (unsigned int)inode->i_ctime.tv_nsec); - printk(KERN_DEBUG "\tcreat_sqnum %llu\n", ui->creat_sqnum); - printk(KERN_DEBUG "\txattr_size %u\n", ui->xattr_size); - printk(KERN_DEBUG "\txattr_cnt %u\n", ui->xattr_cnt); - printk(KERN_DEBUG "\txattr_names %u\n", ui->xattr_names); - printk(KERN_DEBUG "\tdirty %u\n", ui->dirty); - printk(KERN_DEBUG "\txattr %u\n", ui->xattr); - printk(KERN_DEBUG "\tbulk_read %u\n", ui->xattr); - printk(KERN_DEBUG "\tsynced_i_size %llu\n", + printk(KERN_ERR "\tcreat_sqnum %llu\n", ui->creat_sqnum); + printk(KERN_ERR "\txattr_size %u\n", ui->xattr_size); + printk(KERN_ERR "\txattr_cnt %u\n", ui->xattr_cnt); + printk(KERN_ERR "\txattr_names %u\n", ui->xattr_names); + printk(KERN_ERR "\tdirty %u\n", ui->dirty); + printk(KERN_ERR "\txattr %u\n", ui->xattr); + printk(KERN_ERR "\tbulk_read %u\n", ui->xattr); + printk(KERN_ERR "\tsynced_i_size %llu\n", (unsigned long long)ui->synced_i_size); - printk(KERN_DEBUG "\tui_size %llu\n", + printk(KERN_ERR "\tui_size %llu\n", (unsigned long long)ui->ui_size); - printk(KERN_DEBUG "\tflags %d\n", ui->flags); - printk(KERN_DEBUG "\tcompr_type %d\n", ui->compr_type); - printk(KERN_DEBUG "\tlast_page_read %lu\n", ui->last_page_read); - printk(KERN_DEBUG "\tread_in_a_row %lu\n", ui->read_in_a_row); - printk(KERN_DEBUG "\tdata_len %d\n", ui->data_len); + printk(KERN_ERR "\tflags %d\n", ui->flags); + printk(KERN_ERR "\tcompr_type %d\n", ui->compr_type); + printk(KERN_ERR "\tlast_page_read %lu\n", ui->last_page_read); + printk(KERN_ERR "\tread_in_a_row %lu\n", ui->read_in_a_row); + printk(KERN_ERR "\tdata_len %d\n", ui->data_len); if (!S_ISDIR(inode->i_mode)) return; - printk(KERN_DEBUG "List of directory entries:\n"); + printk(KERN_ERR "List of directory entries:\n"); ubifs_assert(!mutex_is_locked(&c->tnc_mutex)); lowest_dent_key(c, &key, inode->i_ino); @@ -284,11 +284,11 @@ void dbg_dump_inode(struct ubifs_info *c, const struct inode *inode) dent = ubifs_tnc_next_ent(c, &key, &nm); if (IS_ERR(dent)) { if (PTR_ERR(dent) != -ENOENT) - printk(KERN_DEBUG "error %ld\n", PTR_ERR(dent)); + printk(KERN_ERR "error %ld\n", PTR_ERR(dent)); break; } - printk(KERN_DEBUG "\t%d: %s (%s)\n", + printk(KERN_ERR "\t%d: %s (%s)\n", count++, dent->name, get_dent_type(dent->type)); nm.name = dent->name; @@ -312,8 +312,8 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) /* If the magic is incorrect, just hexdump the first bytes */ if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) { - printk(KERN_DEBUG "Not a node, first %zu bytes:", UBIFS_CH_SZ); - print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, + printk(KERN_ERR "Not a node, first %zu bytes:", UBIFS_CH_SZ); + print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 32, 1, (void *)node, UBIFS_CH_SZ, 1); return; } @@ -326,7 +326,7 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) { const struct ubifs_pad_node *pad = node; - printk(KERN_DEBUG "\tpad_len %u\n", + printk(KERN_ERR "\tpad_len %u\n", le32_to_cpu(pad->pad_len)); break; } @@ -335,50 +335,50 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) const struct ubifs_sb_node *sup = node; unsigned int sup_flags = le32_to_cpu(sup->flags); - printk(KERN_DEBUG "\tkey_hash %d (%s)\n", + printk(KERN_ERR "\tkey_hash %d (%s)\n", (int)sup->key_hash, get_key_hash(sup->key_hash)); - printk(KERN_DEBUG "\tkey_fmt %d (%s)\n", + printk(KERN_ERR "\tkey_fmt %d (%s)\n", (int)sup->key_fmt, get_key_fmt(sup->key_fmt)); - printk(KERN_DEBUG "\tflags %#x\n", sup_flags); - printk(KERN_DEBUG "\t big_lpt %u\n", + printk(KERN_ERR "\tflags %#x\n", sup_flags); + printk(KERN_ERR "\t big_lpt %u\n", !!(sup_flags & UBIFS_FLG_BIGLPT)); - printk(KERN_DEBUG "\t space_fixup %u\n", + printk(KERN_ERR "\t space_fixup %u\n", !!(sup_flags & UBIFS_FLG_SPACE_FIXUP)); - printk(KERN_DEBUG "\tmin_io_size %u\n", + printk(KERN_ERR "\tmin_io_size %u\n", le32_to_cpu(sup->min_io_size)); - printk(KERN_DEBUG "\tleb_size %u\n", + printk(KERN_ERR "\tleb_size %u\n", le32_to_cpu(sup->leb_size)); - printk(KERN_DEBUG "\tleb_cnt %u\n", + printk(KERN_ERR "\tleb_cnt %u\n", le32_to_cpu(sup->leb_cnt)); - printk(KERN_DEBUG "\tmax_leb_cnt %u\n", + printk(KERN_ERR "\tmax_leb_cnt %u\n", le32_to_cpu(sup->max_leb_cnt)); - printk(KERN_DEBUG "\tmax_bud_bytes %llu\n", + printk(KERN_ERR "\tmax_bud_bytes %llu\n", (unsigned long long)le64_to_cpu(sup->max_bud_bytes)); - printk(KERN_DEBUG "\tlog_lebs %u\n", + printk(KERN_ERR "\tlog_lebs %u\n", le32_to_cpu(sup->log_lebs)); - printk(KERN_DEBUG "\tlpt_lebs %u\n", + printk(KERN_ERR "\tlpt_lebs %u\n", le32_to_cpu(sup->lpt_lebs)); - printk(KERN_DEBUG "\torph_lebs %u\n", + printk(KERN_ERR "\torph_lebs %u\n", le32_to_cpu(sup->orph_lebs)); - printk(KERN_DEBUG "\tjhead_cnt %u\n", + printk(KERN_ERR "\tjhead_cnt %u\n", le32_to_cpu(sup->jhead_cnt)); - printk(KERN_DEBUG "\tfanout %u\n", + printk(KERN_ERR "\tfanout %u\n", le32_to_cpu(sup->fanout)); - printk(KERN_DEBUG "\tlsave_cnt %u\n", + printk(KERN_ERR "\tlsave_cnt %u\n", le32_to_cpu(sup->lsave_cnt)); - printk(KERN_DEBUG "\tdefault_compr %u\n", + printk(KERN_ERR "\tdefault_compr %u\n", (int)le16_to_cpu(sup->default_compr)); - printk(KERN_DEBUG "\trp_size %llu\n", + printk(KERN_ERR "\trp_size %llu\n", (unsigned long long)le64_to_cpu(sup->rp_size)); - printk(KERN_DEBUG "\trp_uid %u\n", + printk(KERN_ERR "\trp_uid %u\n", le32_to_cpu(sup->rp_uid)); - printk(KERN_DEBUG "\trp_gid %u\n", + printk(KERN_ERR "\trp_gid %u\n", le32_to_cpu(sup->rp_gid)); - printk(KERN_DEBUG "\tfmt_version %u\n", + printk(KERN_ERR "\tfmt_version %u\n", le32_to_cpu(sup->fmt_version)); - printk(KERN_DEBUG "\ttime_gran %u\n", + printk(KERN_ERR "\ttime_gran %u\n", le32_to_cpu(sup->time_gran)); - printk(KERN_DEBUG "\tUUID %pUB\n", + printk(KERN_ERR "\tUUID %pUB\n", sup->uuid); break; } @@ -386,61 +386,61 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) { const struct ubifs_mst_node *mst = node; - printk(KERN_DEBUG "\thighest_inum %llu\n", + printk(KERN_ERR "\thighest_inum %llu\n", (unsigned long long)le64_to_cpu(mst->highest_inum)); - printk(KERN_DEBUG "\tcommit number %llu\n", + printk(KERN_ERR "\tcommit number %llu\n", (unsigned long long)le64_to_cpu(mst->cmt_no)); - printk(KERN_DEBUG "\tflags %#x\n", + printk(KERN_ERR "\tflags %#x\n", le32_to_cpu(mst->flags)); - printk(KERN_DEBUG "\tlog_lnum %u\n", + printk(KERN_ERR "\tlog_lnum %u\n", le32_to_cpu(mst->log_lnum)); - printk(KERN_DEBUG "\troot_lnum %u\n", + printk(KERN_ERR "\troot_lnum %u\n", le32_to_cpu(mst->root_lnum)); - printk(KERN_DEBUG "\troot_offs %u\n", + printk(KERN_ERR "\troot_offs %u\n", le32_to_cpu(mst->root_offs)); - printk(KERN_DEBUG "\troot_len %u\n", + printk(KERN_ERR "\troot_len %u\n", le32_to_cpu(mst->root_len)); - printk(KERN_DEBUG "\tgc_lnum %u\n", + printk(KERN_ERR "\tgc_lnum %u\n", le32_to_cpu(mst->gc_lnum)); - printk(KERN_DEBUG "\tihead_lnum %u\n", + printk(KERN_ERR "\tihead_lnum %u\n", le32_to_cpu(mst->ihead_lnum)); - printk(KERN_DEBUG "\tihead_offs %u\n", + printk(KERN_ERR "\tihead_offs %u\n", le32_to_cpu(mst->ihead_offs)); - printk(KERN_DEBUG "\tindex_size %llu\n", + printk(KERN_ERR "\tindex_size %llu\n", (unsigned long long)le64_to_cpu(mst->index_size)); - printk(KERN_DEBUG "\tlpt_lnum %u\n", + printk(KERN_ERR "\tlpt_lnum %u\n", le32_to_cpu(mst->lpt_lnum)); - printk(KERN_DEBUG "\tlpt_offs %u\n", + printk(KERN_ERR "\tlpt_offs %u\n", le32_to_cpu(mst->lpt_offs)); - printk(KERN_DEBUG "\tnhead_lnum %u\n", + printk(KERN_ERR "\tnhead_lnum %u\n", le32_to_cpu(mst->nhead_lnum)); - printk(KERN_DEBUG "\tnhead_offs %u\n", + printk(KERN_ERR "\tnhead_offs %u\n", le32_to_cpu(mst->nhead_offs)); - printk(KERN_DEBUG "\tltab_lnum %u\n", + printk(KERN_ERR "\tltab_lnum %u\n", le32_to_cpu(mst->ltab_lnum)); - printk(KERN_DEBUG "\tltab_offs %u\n", + printk(KERN_ERR "\tltab_offs %u\n", le32_to_cpu(mst->ltab_offs)); - printk(KERN_DEBUG "\tlsave_lnum %u\n", + printk(KERN_ERR "\tlsave_lnum %u\n", le32_to_cpu(mst->lsave_lnum)); - printk(KERN_DEBUG "\tlsave_offs %u\n", + printk(KERN_ERR "\tlsave_offs %u\n", le32_to_cpu(mst->lsave_offs)); - printk(KERN_DEBUG "\tlscan_lnum %u\n", + printk(KERN_ERR "\tlscan_lnum %u\n", le32_to_cpu(mst->lscan_lnum)); - printk(KERN_DEBUG "\tleb_cnt %u\n", + printk(KERN_ERR "\tleb_cnt %u\n", le32_to_cpu(mst->leb_cnt)); - printk(KERN_DEBUG "\tempty_lebs %u\n", + printk(KERN_ERR "\tempty_lebs %u\n", le32_to_cpu(mst->empty_lebs)); - printk(KERN_DEBUG "\tidx_lebs %u\n", + printk(KERN_ERR "\tidx_lebs %u\n", le32_to_cpu(mst->idx_lebs)); - printk(KERN_DEBUG "\ttotal_free %llu\n", + printk(KERN_ERR "\ttotal_free %llu\n", (unsigned long long)le64_to_cpu(mst->total_free)); - printk(KERN_DEBUG "\ttotal_dirty %llu\n", + printk(KERN_ERR "\ttotal_dirty %llu\n", (unsigned long long)le64_to_cpu(mst->total_dirty)); - printk(KERN_DEBUG "\ttotal_used %llu\n", + printk(KERN_ERR "\ttotal_used %llu\n", (unsigned long long)le64_to_cpu(mst->total_used)); - printk(KERN_DEBUG "\ttotal_dead %llu\n", + printk(KERN_ERR "\ttotal_dead %llu\n", (unsigned long long)le64_to_cpu(mst->total_dead)); - printk(KERN_DEBUG "\ttotal_dark %llu\n", + printk(KERN_ERR "\ttotal_dark %llu\n", (unsigned long long)le64_to_cpu(mst->total_dark)); break; } @@ -448,11 +448,11 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) { const struct ubifs_ref_node *ref = node; - printk(KERN_DEBUG "\tlnum %u\n", + printk(KERN_ERR "\tlnum %u\n", le32_to_cpu(ref->lnum)); - printk(KERN_DEBUG "\toffs %u\n", + printk(KERN_ERR "\toffs %u\n", le32_to_cpu(ref->offs)); - printk(KERN_DEBUG "\tjhead %u\n", + printk(KERN_ERR "\tjhead %u\n", le32_to_cpu(ref->jhead)); break; } @@ -461,40 +461,40 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) const struct ubifs_ino_node *ino = node; key_read(c, &ino->key, &key); - printk(KERN_DEBUG "\tkey %s\n", + printk(KERN_ERR "\tkey %s\n", dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN)); - printk(KERN_DEBUG "\tcreat_sqnum %llu\n", + printk(KERN_ERR "\tcreat_sqnum %llu\n", (unsigned long long)le64_to_cpu(ino->creat_sqnum)); - printk(KERN_DEBUG "\tsize %llu\n", + printk(KERN_ERR "\tsize %llu\n", (unsigned long long)le64_to_cpu(ino->size)); - printk(KERN_DEBUG "\tnlink %u\n", + printk(KERN_ERR "\tnlink %u\n", le32_to_cpu(ino->nlink)); - printk(KERN_DEBUG "\tatime %lld.%u\n", + printk(KERN_ERR "\tatime %lld.%u\n", (long long)le64_to_cpu(ino->atime_sec), le32_to_cpu(ino->atime_nsec)); - printk(KERN_DEBUG "\tmtime %lld.%u\n", + printk(KERN_ERR "\tmtime %lld.%u\n", (long long)le64_to_cpu(ino->mtime_sec), le32_to_cpu(ino->mtime_nsec)); - printk(KERN_DEBUG "\tctime %lld.%u\n", + printk(KERN_ERR "\tctime %lld.%u\n", (long long)le64_to_cpu(ino->ctime_sec), le32_to_cpu(ino->ctime_nsec)); - printk(KERN_DEBUG "\tuid %u\n", + printk(KERN_ERR "\tuid %u\n", le32_to_cpu(ino->uid)); - printk(KERN_DEBUG "\tgid %u\n", + printk(KERN_ERR "\tgid %u\n", le32_to_cpu(ino->gid)); - printk(KERN_DEBUG "\tmode %u\n", + printk(KERN_ERR "\tmode %u\n", le32_to_cpu(ino->mode)); - printk(KERN_DEBUG "\tflags %#x\n", + printk(KERN_ERR "\tflags %#x\n", le32_to_cpu(ino->flags)); - printk(KERN_DEBUG "\txattr_cnt %u\n", + printk(KERN_ERR "\txattr_cnt %u\n", le32_to_cpu(ino->xattr_cnt)); - printk(KERN_DEBUG "\txattr_size %u\n", + printk(KERN_ERR "\txattr_size %u\n", le32_to_cpu(ino->xattr_size)); - printk(KERN_DEBUG "\txattr_names %u\n", + printk(KERN_ERR "\txattr_names %u\n", le32_to_cpu(ino->xattr_names)); - printk(KERN_DEBUG "\tcompr_type %#x\n", + printk(KERN_ERR "\tcompr_type %#x\n", (int)le16_to_cpu(ino->compr_type)); - printk(KERN_DEBUG "\tdata len %u\n", + printk(KERN_ERR "\tdata len %u\n", le32_to_cpu(ino->data_len)); break; } @@ -505,16 +505,16 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) int nlen = le16_to_cpu(dent->nlen); key_read(c, &dent->key, &key); - printk(KERN_DEBUG "\tkey %s\n", + printk(KERN_ERR "\tkey %s\n", dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN)); - printk(KERN_DEBUG "\tinum %llu\n", + printk(KERN_ERR "\tinum %llu\n", (unsigned long long)le64_to_cpu(dent->inum)); - printk(KERN_DEBUG "\ttype %d\n", (int)dent->type); - printk(KERN_DEBUG "\tnlen %d\n", nlen); - printk(KERN_DEBUG "\tname "); + printk(KERN_ERR "\ttype %d\n", (int)dent->type); + printk(KERN_ERR "\tnlen %d\n", nlen); + printk(KERN_ERR "\tname "); if (nlen > UBIFS_MAX_NLEN) - printk(KERN_DEBUG "(bad name length, not printing, " + printk(KERN_ERR "(bad name length, not printing, " "bad or corrupted node)"); else { for (i = 0; i < nlen && dent->name[i]; i++) @@ -530,16 +530,16 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ; key_read(c, &dn->key, &key); - printk(KERN_DEBUG "\tkey %s\n", + printk(KERN_ERR "\tkey %s\n", dbg_snprintf_key(c, &key, key_buf, DBG_KEY_BUF_LEN)); - printk(KERN_DEBUG "\tsize %u\n", + printk(KERN_ERR "\tsize %u\n", le32_to_cpu(dn->size)); - printk(KERN_DEBUG "\tcompr_typ %d\n", + printk(KERN_ERR "\tcompr_typ %d\n", (int)le16_to_cpu(dn->compr_type)); - printk(KERN_DEBUG "\tdata size %d\n", + printk(KERN_ERR "\tdata size %d\n", dlen); - printk(KERN_DEBUG "\tdata:\n"); - print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET, 32, 1, + printk(KERN_ERR "\tdata:\n"); + print_hex_dump(KERN_ERR, "\t", DUMP_PREFIX_OFFSET, 32, 1, (void *)&dn->data, dlen, 0); break; } @@ -547,11 +547,11 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) { const struct ubifs_trun_node *trun = node; - printk(KERN_DEBUG "\tinum %u\n", + printk(KERN_ERR "\tinum %u\n", le32_to_cpu(trun->inum)); - printk(KERN_DEBUG "\told_size %llu\n", + printk(KERN_ERR "\told_size %llu\n", (unsigned long long)le64_to_cpu(trun->old_size)); - printk(KERN_DEBUG "\tnew_size %llu\n", + printk(KERN_ERR "\tnew_size %llu\n", (unsigned long long)le64_to_cpu(trun->new_size)); break; } @@ -560,17 +560,17 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) const struct ubifs_idx_node *idx = node; n = le16_to_cpu(idx->child_cnt); - printk(KERN_DEBUG "\tchild_cnt %d\n", n); - printk(KERN_DEBUG "\tlevel %d\n", + printk(KERN_ERR "\tchild_cnt %d\n", n); + printk(KERN_ERR "\tlevel %d\n", (int)le16_to_cpu(idx->level)); - printk(KERN_DEBUG "\tBranches:\n"); + printk(KERN_ERR "\tBranches:\n"); for (i = 0; i < n && i < c->fanout - 1; i++) { const struct ubifs_branch *br; br = ubifs_idx_branch(c, idx, i); key_read(c, &br->key, &key); - printk(KERN_DEBUG "\t%d: LEB %d:%d len %d key %s\n", + printk(KERN_ERR "\t%d: LEB %d:%d len %d key %s\n", i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs), le32_to_cpu(br->len), dbg_snprintf_key(c, &key, key_buf, @@ -584,20 +584,20 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) { const struct ubifs_orph_node *orph = node; - printk(KERN_DEBUG "\tcommit number %llu\n", + printk(KERN_ERR "\tcommit number %llu\n", (unsigned long long) le64_to_cpu(orph->cmt_no) & LLONG_MAX); - printk(KERN_DEBUG "\tlast node flag %llu\n", + printk(KERN_ERR "\tlast node flag %llu\n", (unsigned long long)(le64_to_cpu(orph->cmt_no)) >> 63); n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3; - printk(KERN_DEBUG "\t%d orphan inode numbers:\n", n); + printk(KERN_ERR "\t%d orphan inode numbers:\n", n); for (i = 0; i < n; i++) - printk(KERN_DEBUG "\t ino %llu\n", + printk(KERN_ERR "\t ino %llu\n", (unsigned long long)le64_to_cpu(orph->inos[i])); break; } default: - printk(KERN_DEBUG "node type %d was not recognized\n", + printk(KERN_ERR "node type %d was not recognized\n", (int)ch->node_type); } spin_unlock(&dbg_lock); @@ -606,16 +606,16 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node) void dbg_dump_budget_req(const struct ubifs_budget_req *req) { spin_lock(&dbg_lock); - printk(KERN_DEBUG "Budgeting request: new_ino %d, dirtied_ino %d\n", + printk(KERN_ERR "Budgeting request: new_ino %d, dirtied_ino %d\n", req->new_ino, req->dirtied_ino); - printk(KERN_DEBUG "\tnew_ino_d %d, dirtied_ino_d %d\n", + printk(KERN_ERR "\tnew_ino_d %d, dirtied_ino_d %d\n", req->new_ino_d, req->dirtied_ino_d); - printk(KERN_DEBUG "\tnew_page %d, dirtied_page %d\n", + printk(KERN_ERR "\tnew_page %d, dirtied_page %d\n", req->new_page, req->dirtied_page); - printk(KERN_DEBUG "\tnew_dent %d, mod_dent %d\n", + printk(KERN_ERR "\tnew_dent %d, mod_dent %d\n", req->new_dent, req->mod_dent); - printk(KERN_DEBUG "\tidx_growth %d\n", req->idx_growth); - printk(KERN_DEBUG "\tdata_growth %d dd_growth %d\n", + printk(KERN_ERR "\tidx_growth %d\n", req->idx_growth); + printk(KERN_ERR "\tdata_growth %d dd_growth %d\n", req->data_growth, req->dd_growth); spin_unlock(&dbg_lock); } @@ -623,12 +623,12 @@ void dbg_dump_budget_req(const struct ubifs_budget_req *req) void dbg_dump_lstats(const struct ubifs_lp_stats *lst) { spin_lock(&dbg_lock); - printk(KERN_DEBUG "(pid %d) Lprops statistics: empty_lebs %d, " + printk(KERN_ERR "(pid %d) Lprops statistics: empty_lebs %d, " "idx_lebs %d\n", current->pid, lst->empty_lebs, lst->idx_lebs); - printk(KERN_DEBUG "\ttaken_empty_lebs %d, total_free %lld, " + printk(KERN_ERR "\ttaken_empty_lebs %d, total_free %lld, " "total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free, lst->total_dirty); - printk(KERN_DEBUG "\ttotal_used %lld, total_dark %lld, " + printk(KERN_ERR "\ttotal_used %lld, total_dark %lld, " "total_dead %lld\n", lst->total_used, lst->total_dark, lst->total_dead); spin_unlock(&dbg_lock); @@ -644,21 +644,21 @@ void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi) spin_lock(&c->space_lock); spin_lock(&dbg_lock); - printk(KERN_DEBUG "(pid %d) Budgeting info: data budget sum %lld, " + printk(KERN_ERR "(pid %d) Budgeting info: data budget sum %lld, " "total budget sum %lld\n", current->pid, bi->data_growth + bi->dd_growth, bi->data_growth + bi->dd_growth + bi->idx_growth); - printk(KERN_DEBUG "\tbudg_data_growth %lld, budg_dd_growth %lld, " + printk(KERN_ERR "\tbudg_data_growth %lld, budg_dd_growth %lld, " "budg_idx_growth %lld\n", bi->data_growth, bi->dd_growth, bi->idx_growth); - printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %llu, " + printk(KERN_ERR "\tmin_idx_lebs %d, old_idx_sz %llu, " "uncommitted_idx %lld\n", bi->min_idx_lebs, bi->old_idx_sz, bi->uncommitted_idx); - printk(KERN_DEBUG "\tpage_budget %d, inode_budget %d, dent_budget %d\n", + printk(KERN_ERR "\tpage_budget %d, inode_budget %d, dent_budget %d\n", bi->page_budget, bi->inode_budget, bi->dent_budget); - printk(KERN_DEBUG "\tnospace %u, nospace_rp %u\n", + printk(KERN_ERR "\tnospace %u, nospace_rp %u\n", bi->nospace, bi->nospace_rp); - printk(KERN_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n", + printk(KERN_ERR "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n", c->dark_wm, c->dead_wm, c->max_idx_node_sz); if (bi != &c->bi) @@ -669,38 +669,38 @@ void dbg_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi) */ goto out_unlock; - printk(KERN_DEBUG "\tfreeable_cnt %d, calc_idx_sz %lld, idx_gc_cnt %d\n", + printk(KERN_ERR "\tfreeable_cnt %d, calc_idx_sz %lld, idx_gc_cnt %d\n", c->freeable_cnt, c->calc_idx_sz, c->idx_gc_cnt); - printk(KERN_DEBUG "\tdirty_pg_cnt %ld, dirty_zn_cnt %ld, " + printk(KERN_ERR "\tdirty_pg_cnt %ld, dirty_zn_cnt %ld, " "clean_zn_cnt %ld\n", atomic_long_read(&c->dirty_pg_cnt), atomic_long_read(&c->dirty_zn_cnt), atomic_long_read(&c->clean_zn_cnt)); - printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n", + printk(KERN_ERR "\tgc_lnum %d, ihead_lnum %d\n", c->gc_lnum, c->ihead_lnum); /* If we are in R/O mode, journal heads do not exist */ if (c->jheads) for (i = 0; i < c->jhead_cnt; i++) - printk(KERN_DEBUG "\tjhead %s\t LEB %d\n", + printk(KERN_ERR "\tjhead %s\t LEB %d\n", dbg_jhead(c->jheads[i].wbuf.jhead), c->jheads[i].wbuf.lnum); for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) { bud = rb_entry(rb, struct ubifs_bud, rb); - printk(KERN_DEBUG "\tbud LEB %d\n", bud->lnum); + printk(KERN_ERR "\tbud LEB %d\n", bud->lnum); } list_for_each_entry(bud, &c->old_buds, list) - printk(KERN_DEBUG "\told bud LEB %d\n", bud->lnum); + printk(KERN_ERR "\told bud LEB %d\n", bud->lnum); list_for_each_entry(idx_gc, &c->idx_gc, list) - printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n", + printk(KERN_ERR "\tGC'ed idx LEB %d unmap %d\n", idx_gc->lnum, idx_gc->unmap); - printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state); + printk(KERN_ERR "\tcommit state %d\n", c->cmt_state); /* Print budgeting predictions */ available = ubifs_calc_available(c, c->bi.min_idx_lebs); outstanding = c->bi.data_growth + c->bi.dd_growth; free = ubifs_get_free_space_nolock(c); - printk(KERN_DEBUG "Budgeting predictions:\n"); - printk(KERN_DEBUG "\tavailable: %lld, outstanding %lld, free %lld\n", + printk(KERN_ERR "Budgeting predictions:\n"); + printk(KERN_ERR "\tavailable: %lld, outstanding %lld, free %lld\n", available, outstanding, free); out_unlock: spin_unlock(&dbg_lock); @@ -720,11 +720,11 @@ void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp) dark = ubifs_calc_dark(c, spc); if (lp->flags & LPROPS_INDEX) - printk(KERN_DEBUG "LEB %-7d free %-8d dirty %-8d used %-8d " + printk(KERN_ERR "LEB %-7d free %-8d dirty %-8d used %-8d " "free + dirty %-8d flags %#x (", lp->lnum, lp->free, lp->dirty, c->leb_size - spc, spc, lp->flags); else - printk(KERN_DEBUG "LEB %-7d free %-8d dirty %-8d used %-8d " + printk(KERN_ERR "LEB %-7d free %-8d dirty %-8d used %-8d " "free + dirty %-8d dark %-4d dead %-4d nodes fit %-3d " "flags %#-4x (", lp->lnum, lp->free, lp->dirty, c->leb_size - spc, spc, dark, dead, @@ -807,7 +807,7 @@ void dbg_dump_lprops(struct ubifs_info *c) struct ubifs_lprops lp; struct ubifs_lp_stats lst; - printk(KERN_DEBUG "(pid %d) start dumping LEB properties\n", + printk(KERN_ERR "(pid %d) start dumping LEB properties\n", current->pid); ubifs_get_lp_stats(c, &lst); dbg_dump_lstats(&lst); @@ -819,7 +819,7 @@ void dbg_dump_lprops(struct ubifs_info *c) dbg_dump_lprop(c, &lp); } - printk(KERN_DEBUG "(pid %d) finish dumping LEB properties\n", + printk(KERN_ERR "(pid %d) finish dumping LEB properties\n", current->pid); } @@ -828,35 +828,35 @@ void dbg_dump_lpt_info(struct ubifs_info *c) int i; spin_lock(&dbg_lock); - printk(KERN_DEBUG "(pid %d) dumping LPT information\n", current->pid); - printk(KERN_DEBUG "\tlpt_sz: %lld\n", c->lpt_sz); - printk(KERN_DEBUG "\tpnode_sz: %d\n", c->pnode_sz); - printk(KERN_DEBUG "\tnnode_sz: %d\n", c->nnode_sz); - printk(KERN_DEBUG "\tltab_sz: %d\n", c->ltab_sz); - printk(KERN_DEBUG "\tlsave_sz: %d\n", c->lsave_sz); - printk(KERN_DEBUG "\tbig_lpt: %d\n", c->big_lpt); - printk(KERN_DEBUG "\tlpt_hght: %d\n", c->lpt_hght); - printk(KERN_DEBUG "\tpnode_cnt: %d\n", c->pnode_cnt); - printk(KERN_DEBUG "\tnnode_cnt: %d\n", c->nnode_cnt); - printk(KERN_DEBUG "\tdirty_pn_cnt: %d\n", c->dirty_pn_cnt); - printk(KERN_DEBUG "\tdirty_nn_cnt: %d\n", c->dirty_nn_cnt); - printk(KERN_DEBUG "\tlsave_cnt: %d\n", c->lsave_cnt); - printk(KERN_DEBUG "\tspace_bits: %d\n", c->space_bits); - printk(KERN_DEBUG "\tlpt_lnum_bits: %d\n", c->lpt_lnum_bits); - printk(KERN_DEBUG "\tlpt_offs_bits: %d\n", c->lpt_offs_bits); - printk(KERN_DEBUG "\tlpt_spc_bits: %d\n", c->lpt_spc_bits); - printk(KERN_DEBUG "\tpcnt_bits: %d\n", c->pcnt_bits); - printk(KERN_DEBUG "\tlnum_bits: %d\n", c->lnum_bits); - printk(KERN_DEBUG "\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs); - printk(KERN_DEBUG "\tLPT head is at %d:%d\n", + printk(KERN_ERR "(pid %d) dumping LPT information\n", current->pid); + printk(KERN_ERR "\tlpt_sz: %lld\n", c->lpt_sz); + printk(KERN_ERR "\tpnode_sz: %d\n", c->pnode_sz); + printk(KERN_ERR "\tnnode_sz: %d\n", c->nnode_sz); + printk(KERN_ERR "\tltab_sz: %d\n", c->ltab_sz); + printk(KERN_ERR "\tlsave_sz: %d\n", c->lsave_sz); + printk(KERN_ERR "\tbig_lpt: %d\n", c->big_lpt); + printk(KERN_ERR "\tlpt_hght: %d\n", c->lpt_hght); + printk(KERN_ERR "\tpnode_cnt: %d\n", c->pnode_cnt); + printk(KERN_ERR "\tnnode_cnt: %d\n", c->nnode_cnt); + printk(KERN_ERR "\tdirty_pn_cnt: %d\n", c->dirty_pn_cnt); + printk(KERN_ERR "\tdirty_nn_cnt: %d\n", c->dirty_nn_cnt); + printk(KERN_ERR "\tlsave_cnt: %d\n", c->lsave_cnt); + printk(KERN_ERR "\tspace_bits: %d\n", c->space_bits); + printk(KERN_ERR "\tlpt_lnum_bits: %d\n", c->lpt_lnum_bits); + printk(KERN_ERR "\tlpt_offs_bits: %d\n", c->lpt_offs_bits); + printk(KERN_ERR "\tlpt_spc_bits: %d\n", c->lpt_spc_bits); + printk(KERN_ERR "\tpcnt_bits: %d\n", c->pcnt_bits); + printk(KERN_ERR "\tlnum_bits: %d\n", c->lnum_bits); + printk(KERN_ERR "\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs); + printk(KERN_ERR "\tLPT head is at %d:%d\n", c->nhead_lnum, c->nhead_offs); - printk(KERN_DEBUG "\tLPT ltab is at %d:%d\n", + printk(KERN_ERR "\tLPT ltab is at %d:%d\n", c->ltab_lnum, c->ltab_offs); if (c->big_lpt) - printk(KERN_DEBUG "\tLPT lsave is at %d:%d\n", + printk(KERN_ERR "\tLPT lsave is at %d:%d\n", c->lsave_lnum, c->lsave_offs); for (i = 0; i < c->lpt_lebs; i++) - printk(KERN_DEBUG "\tLPT LEB %d free %d dirty %d tgc %d " + printk(KERN_ERR "\tLPT LEB %d free %d dirty %d tgc %d " "cmt %d\n", i + c->lpt_first, c->ltab[i].free, c->ltab[i].dirty, c->ltab[i].tgc, c->ltab[i].cmt); spin_unlock(&dbg_lock); @@ -867,12 +867,12 @@ void dbg_dump_sleb(const struct ubifs_info *c, { struct ubifs_scan_node *snod; - printk(KERN_DEBUG "(pid %d) start dumping scanned data from LEB %d:%d\n", + printk(KERN_ERR "(pid %d) start dumping scanned data from LEB %d:%d\n", current->pid, sleb->lnum, offs); list_for_each_entry(snod, &sleb->nodes, list) { cond_resched(); - printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", sleb->lnum, + printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", sleb->lnum, snod->offs, snod->len); dbg_dump_node(c, snod->node); } @@ -887,7 +887,7 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) if (dbg_is_tst_rcvry(c)) return; - printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n", + printk(KERN_ERR "(pid %d) start dumping LEB %d\n", current->pid, lnum); buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL); @@ -902,17 +902,17 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) goto out; } - printk(KERN_DEBUG "LEB %d has %d nodes ending at %d\n", lnum, + printk(KERN_ERR "LEB %d has %d nodes ending at %d\n", lnum, sleb->nodes_cnt, sleb->endpt); list_for_each_entry(snod, &sleb->nodes, list) { cond_resched(); - printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", lnum, + printk(KERN_ERR "Dumping node at LEB %d:%d len %d\n", lnum, snod->offs, snod->len); dbg_dump_node(c, snod->node); } - printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n", + printk(KERN_ERR "(pid %d) finish dumping LEB %d\n", current->pid, lnum); ubifs_scan_destroy(sleb); @@ -934,7 +934,7 @@ void dbg_dump_znode(const struct ubifs_info *c, else zbr = &c->zroot; - printk(KERN_DEBUG "znode %p, LEB %d:%d len %d parent %p iip %d level %d" + printk(KERN_ERR "znode %p, LEB %d:%d len %d parent %p iip %d level %d" " child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs, zbr->len, znode->parent, znode->iip, znode->level, znode->child_cnt, znode->flags); @@ -944,18 +944,18 @@ void dbg_dump_znode(const struct ubifs_info *c, return; } - printk(KERN_DEBUG "zbranches:\n"); + printk(KERN_ERR "zbranches:\n"); for (n = 0; n < znode->child_cnt; n++) { zbr = &znode->zbranch[n]; if (znode->level > 0) - printk(KERN_DEBUG "\t%d: znode %p LEB %d:%d len %d key " + printk(KERN_ERR "\t%d: znode %p LEB %d:%d len %d key " "%s\n", n, zbr->znode, zbr->lnum, zbr->offs, zbr->len, dbg_snprintf_key(c, &zbr->key, key_buf, DBG_KEY_BUF_LEN)); else - printk(KERN_DEBUG "\t%d: LNC %p LEB %d:%d len %d key " + printk(KERN_ERR "\t%d: LNC %p LEB %d:%d len %d key " "%s\n", n, zbr->znode, zbr->lnum, zbr->offs, zbr->len, dbg_snprintf_key(c, &zbr->key, @@ -969,16 +969,16 @@ void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) { int i; - printk(KERN_DEBUG "(pid %d) start dumping heap cat %d (%d elements)\n", + printk(KERN_ERR "(pid %d) start dumping heap cat %d (%d elements)\n", current->pid, cat, heap->cnt); for (i = 0; i < heap->cnt; i++) { struct ubifs_lprops *lprops = heap->arr[i]; - printk(KERN_DEBUG "\t%d. LEB %d hpos %d free %d dirty %d " + printk(KERN_ERR "\t%d. LEB %d hpos %d free %d dirty %d " "flags %d\n", i, lprops->lnum, lprops->hpos, lprops->free, lprops->dirty, lprops->flags); } - printk(KERN_DEBUG "(pid %d) finish dumping heap\n", current->pid); + printk(KERN_ERR "(pid %d) finish dumping heap\n", current->pid); } void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, @@ -986,15 +986,15 @@ void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, { int i; - printk(KERN_DEBUG "(pid %d) dumping pnode:\n", current->pid); - printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n", + printk(KERN_ERR "(pid %d) dumping pnode:\n", current->pid); + printk(KERN_ERR "\taddress %zx parent %zx cnext %zx\n", (size_t)pnode, (size_t)parent, (size_t)pnode->cnext); - printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n", + printk(KERN_ERR "\tflags %lu iip %d level %d num %d\n", pnode->flags, iip, pnode->level, pnode->num); for (i = 0; i < UBIFS_LPT_FANOUT; i++) { struct ubifs_lprops *lp = &pnode->lprops[i]; - printk(KERN_DEBUG "\t%d: free %d dirty %d flags %d lnum %d\n", + printk(KERN_ERR "\t%d: free %d dirty %d flags %d lnum %d\n", i, lp->free, lp->dirty, lp->flags, lp->lnum); } } @@ -1004,20 +1004,20 @@ void dbg_dump_tnc(struct ubifs_info *c) struct ubifs_znode *znode; int level; - printk(KERN_DEBUG "\n"); - printk(KERN_DEBUG "(pid %d) start dumping TNC tree\n", current->pid); + printk(KERN_ERR "\n"); + printk(KERN_ERR "(pid %d) start dumping TNC tree\n", current->pid); znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL); level = znode->level; - printk(KERN_DEBUG "== Level %d ==\n", level); + printk(KERN_ERR "== Level %d ==\n", level); while (znode) { if (level != znode->level) { level = znode->level; - printk(KERN_DEBUG "== Level %d ==\n", level); + printk(KERN_ERR "== Level %d ==\n", level); } dbg_dump_znode(c, znode); znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode); } - printk(KERN_DEBUG "(pid %d) finish dumping TNC tree\n", current->pid); + printk(KERN_ERR "(pid %d) finish dumping TNC tree\n", current->pid); } static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode, diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index ad1a6fee601..9f717655df1 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -164,9 +164,7 @@ struct ubifs_global_debug_info { #define dbg_dump_stack() dump_stack() #define dbg_err(fmt, ...) do { \ - spin_lock(&dbg_lock); \ ubifs_err(fmt, ##__VA_ARGS__); \ - spin_unlock(&dbg_lock); \ } while (0) #define ubifs_dbg_msg(type, fmt, ...) \ @@ -217,7 +215,6 @@ struct ubifs_global_debug_info { /* Additional recovery messages */ #define dbg_rcvry(fmt, ...) ubifs_dbg_msg("rcvry", fmt, ##__VA_ARGS__) -extern spinlock_t dbg_lock; extern struct ubifs_global_debug_info ubifs_dbg; static inline int dbg_is_chk_gen(const struct ubifs_info *c) diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index d6fe1c79f18..ec9f1870ab7 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -566,6 +566,7 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry) int sz_change = CALC_DENT_SIZE(dentry->d_name.len); int err, budgeted = 1; struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 2 }; + unsigned int saved_nlink = inode->i_nlink; /* * Budget request settings: deletion direntry, deletion inode (+1 for @@ -613,7 +614,7 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry) out_cancel: dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - inc_nlink(inode); + set_nlink(inode, saved_nlink); unlock_2_inodes(dir, inode); if (budgeted) ubifs_release_budget(c, &req); @@ -704,8 +705,7 @@ out_cancel: dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; inc_nlink(dir); - inc_nlink(inode); - inc_nlink(inode); + set_nlink(inode, 2); unlock_2_inodes(dir, inode); if (budgeted) ubifs_release_budget(c, &req); @@ -977,6 +977,7 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry, struct ubifs_budget_req ino_req = { .dirtied_ino = 1, .dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) }; struct timespec time; + unsigned int saved_nlink; /* * Budget request settings: deletion direntry, new direntry, removing @@ -1059,13 +1060,14 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry, if (unlink) { /* * Directories cannot have hard-links, so if this is a - * directory, decrement its @i_nlink twice because an empty - * directory has @i_nlink 2. + * directory, just clear @i_nlink. */ + saved_nlink = new_inode->i_nlink; if (is_dir) + clear_nlink(new_inode); + else drop_nlink(new_inode); new_inode->i_ctime = time; - drop_nlink(new_inode); } else { new_dir->i_size += new_sz; ubifs_inode(new_dir)->ui_size = new_dir->i_size; @@ -1102,9 +1104,7 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry, out_cancel: if (unlink) { - if (is_dir) - inc_nlink(new_inode); - inc_nlink(new_inode); + set_nlink(new_inode, saved_nlink); } else { new_dir->i_size -= new_sz; ubifs_inode(new_dir)->ui_size = new_dir->i_size; diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index f9c234bf33d..5c8f6dc1d28 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1042,10 +1042,10 @@ static int ubifs_writepage(struct page *page, struct writeback_control *wbc) * the page size, the remaining memory is zeroed when mapped, and * writes to that region are not written out to the file." */ - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memset(kaddr + len, 0, PAGE_CACHE_SIZE - len); flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); if (i_size > synced_i_size) { err = inode->i_sb->s_op->write_inode(inode, NULL); diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c index ee4f43f4bb9..2a935b31723 100644 --- a/fs/ubifs/recovery.c +++ b/fs/ubifs/recovery.c @@ -679,7 +679,8 @@ struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum, ret == SCANNED_GARBAGE || ret == SCANNED_A_BAD_PAD_NODE || ret == SCANNED_A_CORRUPT_NODE) { - dbg_rcvry("found corruption - %d", ret); + dbg_rcvry("found corruption (%d) at %d:%d", + ret, lnum, offs); break; } else { dbg_err("unexpected return value %d", ret); diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c index 6094c5a5d7a..771f7fb6ce9 100644 --- a/fs/ubifs/sb.c +++ b/fs/ubifs/sb.c @@ -410,13 +410,23 @@ static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup) } if (c->main_lebs < UBIFS_MIN_MAIN_LEBS) { - err = 7; + ubifs_err("too few main LEBs count %d, must be at least %d", + c->main_lebs, UBIFS_MIN_MAIN_LEBS); goto failed; } - if (c->max_bud_bytes < (long long)c->leb_size * UBIFS_MIN_BUD_LEBS || - c->max_bud_bytes > (long long)c->leb_size * c->main_lebs) { - err = 8; + max_bytes = (long long)c->leb_size * UBIFS_MIN_BUD_LEBS; + if (c->max_bud_bytes < max_bytes) { + ubifs_err("too small journal (%lld bytes), must be at least " + "%lld bytes", c->max_bud_bytes, max_bytes); + goto failed; + } + + max_bytes = (long long)c->leb_size * c->main_lebs; + if (c->max_bud_bytes > max_bytes) { + ubifs_err("too large journal size (%lld bytes), only %lld bytes" + "available in the main area", + c->max_bud_bytes, max_bytes); goto failed; } @@ -450,7 +460,6 @@ static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup) goto failed; } - max_bytes = c->main_lebs * (long long)c->leb_size; if (c->rp_size < 0 || max_bytes < c->rp_size) { err = 14; goto failed; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 63765d58445..76e4e0566ad 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -2076,15 +2076,13 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) goto out_umount; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) - goto out_iput; + goto out_umount; mutex_unlock(&c->umount_mutex); return 0; -out_iput: - iput(root); out_umount: ubifs_umount(c); out_unlock: diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 12e94774aa8..93d59aceaae 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -84,9 +84,6 @@ #define INUM_WARN_WATERMARK 0xFFF00000 #define INUM_WATERMARK 0xFFFFFF00 -/* Largest key size supported in this implementation */ -#define CUR_MAX_KEY_LEN UBIFS_SK_LEN - /* Maximum number of entries in each LPT (LEB category) heap */ #define LPT_HEAP_SZ 256 @@ -277,10 +274,10 @@ struct ubifs_old_idx { /* The below union makes it easier to deal with keys */ union ubifs_key { - uint8_t u8[CUR_MAX_KEY_LEN]; - uint32_t u32[CUR_MAX_KEY_LEN/4]; - uint64_t u64[CUR_MAX_KEY_LEN/8]; - __le32 j32[CUR_MAX_KEY_LEN/4]; + uint8_t u8[UBIFS_SK_LEN]; + uint32_t u32[UBIFS_SK_LEN/4]; + uint64_t u64[UBIFS_SK_LEN/8]; + __le32 j32[UBIFS_SK_LEN/4]; }; /** diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c index 987585bb0a1..1ba2baaf436 100644 --- a/fs/udf/balloc.c +++ b/fs/udf/balloc.c @@ -105,7 +105,6 @@ static void udf_add_free_space(struct super_block *sb, u16 partition, u32 cnt) } static void udf_bitmap_free_blocks(struct super_block *sb, - struct inode *inode, struct udf_bitmap *bitmap, struct kernel_lb_addr *bloc, uint32_t offset, @@ -172,7 +171,6 @@ error_return: } static int udf_bitmap_prealloc_blocks(struct super_block *sb, - struct inode *inode, struct udf_bitmap *bitmap, uint16_t partition, uint32_t first_block, uint32_t block_count) @@ -223,7 +221,6 @@ out: } static int udf_bitmap_new_block(struct super_block *sb, - struct inode *inode, struct udf_bitmap *bitmap, uint16_t partition, uint32_t goal, int *err) { @@ -349,7 +346,6 @@ error_return: } static void udf_table_free_blocks(struct super_block *sb, - struct inode *inode, struct inode *table, struct kernel_lb_addr *bloc, uint32_t offset, @@ -581,7 +577,6 @@ error_return: } static int udf_table_prealloc_blocks(struct super_block *sb, - struct inode *inode, struct inode *table, uint16_t partition, uint32_t first_block, uint32_t block_count) { @@ -643,7 +638,6 @@ static int udf_table_prealloc_blocks(struct super_block *sb, } static int udf_table_new_block(struct super_block *sb, - struct inode *inode, struct inode *table, uint16_t partition, uint32_t goal, int *err) { @@ -743,18 +737,23 @@ void udf_free_blocks(struct super_block *sb, struct inode *inode, struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition]; if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) { - udf_bitmap_free_blocks(sb, inode, map->s_uspace.s_bitmap, + udf_bitmap_free_blocks(sb, map->s_uspace.s_bitmap, bloc, offset, count); } else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) { - udf_table_free_blocks(sb, inode, map->s_uspace.s_table, + udf_table_free_blocks(sb, map->s_uspace.s_table, bloc, offset, count); } else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) { - udf_bitmap_free_blocks(sb, inode, map->s_fspace.s_bitmap, + udf_bitmap_free_blocks(sb, map->s_fspace.s_bitmap, bloc, offset, count); } else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) { - udf_table_free_blocks(sb, inode, map->s_fspace.s_table, + udf_table_free_blocks(sb, map->s_fspace.s_table, bloc, offset, count); } + + if (inode) { + inode_sub_bytes(inode, + ((sector_t)count) << sb->s_blocksize_bits); + } } inline int udf_prealloc_blocks(struct super_block *sb, @@ -763,29 +762,34 @@ inline int udf_prealloc_blocks(struct super_block *sb, uint32_t block_count) { struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition]; + sector_t allocated; if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) - return udf_bitmap_prealloc_blocks(sb, inode, - map->s_uspace.s_bitmap, - partition, first_block, - block_count); + allocated = udf_bitmap_prealloc_blocks(sb, + map->s_uspace.s_bitmap, + partition, first_block, + block_count); else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) - return udf_table_prealloc_blocks(sb, inode, - map->s_uspace.s_table, - partition, first_block, - block_count); + allocated = udf_table_prealloc_blocks(sb, + map->s_uspace.s_table, + partition, first_block, + block_count); else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) - return udf_bitmap_prealloc_blocks(sb, inode, - map->s_fspace.s_bitmap, - partition, first_block, - block_count); + allocated = udf_bitmap_prealloc_blocks(sb, + map->s_fspace.s_bitmap, + partition, first_block, + block_count); else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) - return udf_table_prealloc_blocks(sb, inode, - map->s_fspace.s_table, - partition, first_block, - block_count); + allocated = udf_table_prealloc_blocks(sb, + map->s_fspace.s_table, + partition, first_block, + block_count); else return 0; + + if (inode && allocated > 0) + inode_add_bytes(inode, allocated << sb->s_blocksize_bits); + return allocated; } inline int udf_new_block(struct super_block *sb, @@ -793,25 +797,29 @@ inline int udf_new_block(struct super_block *sb, uint16_t partition, uint32_t goal, int *err) { struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition]; + int block; if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) - return udf_bitmap_new_block(sb, inode, - map->s_uspace.s_bitmap, - partition, goal, err); + block = udf_bitmap_new_block(sb, + map->s_uspace.s_bitmap, + partition, goal, err); else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) - return udf_table_new_block(sb, inode, - map->s_uspace.s_table, - partition, goal, err); - else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) - return udf_bitmap_new_block(sb, inode, - map->s_fspace.s_bitmap, + block = udf_table_new_block(sb, + map->s_uspace.s_table, partition, goal, err); + else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) + block = udf_bitmap_new_block(sb, + map->s_fspace.s_bitmap, + partition, goal, err); else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) - return udf_table_new_block(sb, inode, - map->s_fspace.s_table, - partition, goal, err); + block = udf_table_new_block(sb, + map->s_fspace.s_table, + partition, goal, err); else { *err = -EIO; return 0; } + if (inode && block) + inode_add_bytes(inode, sb->s_blocksize); + return block; } diff --git a/fs/udf/file.c b/fs/udf/file.c index dca0c3881e8..7f3f7ba3df6 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -87,10 +87,10 @@ static int udf_adinicb_write_end(struct file *file, char *kaddr; struct udf_inode_info *iinfo = UDF_I(inode); - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset, kaddr + offset, copied); - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); return simple_write_end(file, mapping, pos, len, copied, page, fsdata); } @@ -201,12 +201,10 @@ out: static int udf_release_file(struct inode *inode, struct file *filp) { if (filp->f_mode & FMODE_WRITE) { - mutex_lock(&inode->i_mutex); down_write(&UDF_I(inode)->i_data_sem); udf_discard_prealloc(inode); udf_truncate_tail_extent(inode); up_write(&UDF_I(inode)->i_data_sem); - mutex_unlock(&inode->i_mutex); } return 0; } diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c index 05ab48195be..7e5aae4bf46 100644 --- a/fs/udf/ialloc.c +++ b/fs/udf/ialloc.c @@ -116,6 +116,7 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) iinfo->i_lenEAttr = 0; iinfo->i_lenAlloc = 0; iinfo->i_use = 0; + iinfo->i_checkpoint = 1; if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB)) iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB; else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 7699df7b319..7d752800835 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1358,6 +1358,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) iinfo->i_unique = le64_to_cpu(fe->uniqueID); iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr); iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs); + iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint); offset = sizeof(struct fileEntry) + iinfo->i_lenEAttr; } else { inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) << @@ -1379,6 +1380,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) iinfo->i_unique = le64_to_cpu(efe->uniqueID); iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr); iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs); + iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint); offset = sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr; } @@ -1495,6 +1497,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) struct buffer_head *bh = NULL; struct fileEntry *fe; struct extendedFileEntry *efe; + uint64_t lb_recorded; uint32_t udfperms; uint16_t icbflags; uint16_t crclen; @@ -1589,13 +1592,18 @@ static int udf_update_inode(struct inode *inode, int do_sync) dsea->minorDeviceIdent = cpu_to_le32(iminor(inode)); } + if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) + lb_recorded = 0; /* No extents => no blocks! */ + else + lb_recorded = + (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> + (blocksize_bits - 9); + if (iinfo->i_efe == 0) { memcpy(bh->b_data + sizeof(struct fileEntry), iinfo->i_ext.i_data, inode->i_sb->s_blocksize - sizeof(struct fileEntry)); - fe->logicalBlocksRecorded = cpu_to_le64( - (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> - (blocksize_bits - 9)); + fe->logicalBlocksRecorded = cpu_to_le64(lb_recorded); udf_time_to_disk_stamp(&fe->accessTime, inode->i_atime); udf_time_to_disk_stamp(&fe->modificationTime, inode->i_mtime); @@ -1607,6 +1615,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) fe->uniqueID = cpu_to_le64(iinfo->i_unique); fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); + fe->checkpoint = cpu_to_le32(iinfo->i_checkpoint); fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE); crclen = sizeof(struct fileEntry); } else { @@ -1615,9 +1624,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry)); efe->objectSize = cpu_to_le64(inode->i_size); - efe->logicalBlocksRecorded = cpu_to_le64( - (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >> - (blocksize_bits - 9)); + efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded); if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec || (iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec && @@ -1646,6 +1653,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) efe->uniqueID = cpu_to_le64(iinfo->i_unique); efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr); efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc); + efe->checkpoint = cpu_to_le32(iinfo->i_checkpoint); efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE); crclen = sizeof(struct extendedFileEntry); } diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 08bf46edf9c..38de8f234b9 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -32,8 +32,6 @@ #include <linux/crc-itu-t.h> #include <linux/exportfs.h> -enum { UDF_MAX_LINKS = 0xffff }; - static inline int udf_match(int len1, const unsigned char *name1, int len2, const unsigned char *name2) { @@ -649,10 +647,6 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct udf_inode_info *dinfo = UDF_I(dir); struct udf_inode_info *iinfo; - err = -EMLINK; - if (dir->i_nlink >= UDF_MAX_LINKS) - goto out; - err = -EIO; inode = udf_new_inode(dir, S_IFDIR | mode, &err); if (!inode) @@ -1032,9 +1026,6 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir, struct fileIdentDesc cfi, *fi; int err; - if (inode->i_nlink >= UDF_MAX_LINKS) - return -EMLINK; - fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); if (!fi) { return err; @@ -1126,10 +1117,6 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry, if (udf_get_lb_pblock(old_inode->i_sb, &tloc, 0) != old_dir->i_ino) goto end_rename; - - retval = -EMLINK; - if (!new_inode && new_dir->i_nlink >= UDF_MAX_LINKS) - goto end_rename; } if (!nfi) { nfi = udf_add_entry(new_dir, new_dentry, &nfibh, &ncfi, diff --git a/fs/udf/super.c b/fs/udf/super.c index c09a84daaf5..ac8a348dcb6 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -75,6 +75,8 @@ #define UDF_DEFAULT_BLOCKSIZE 2048 +enum { UDF_MAX_LINKS = 0xffff }; + /* These are the "meat" - everything else is stuffing */ static int udf_fill_super(struct super_block *, void *, int); static void udf_put_super(struct super_block *); @@ -948,11 +950,8 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index) else bitmap = vzalloc(size); /* TODO: get rid of vzalloc */ - if (bitmap == NULL) { - udf_err(sb, "Unable to allocate space for bitmap and %d buffer_head pointers\n", - nr_groups); + if (bitmap == NULL) return NULL; - } bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1); bitmap->s_nr_groups = nr_groups; @@ -2035,13 +2034,13 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) } /* Allocate a dentry for the root inode */ - sb->s_root = d_alloc_root(inode); + sb->s_root = d_make_root(inode); if (!sb->s_root) { udf_err(sb, "Couldn't allocate root dentry\n"); - iput(inode); goto error_out; } sb->s_maxbytes = MAX_LFS_FILESIZE; + sb->s_max_links = UDF_MAX_LINKS; return 0; error_out: diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h index d1bd31ea724..bb8309dcd5c 100644 --- a/fs/udf/udf_i.h +++ b/fs/udf/udf_i.h @@ -23,6 +23,7 @@ struct udf_inode_info { __u64 i_lenExtents; __u32 i_next_alloc_block; __u32 i_next_alloc_goal; + __u32 i_checkpoint; unsigned i_alloc_type : 3; unsigned i_efe : 1; /* extendedFileEntry */ unsigned i_use : 1; /* unallocSpaceEntry */ diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c index 38cac199edf..a2281cadefa 100644 --- a/fs/ufs/namei.c +++ b/fs/ufs/namei.c @@ -166,10 +166,6 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir, int error; lock_ufs(dir->i_sb); - if (inode->i_nlink >= UFS_LINK_MAX) { - unlock_ufs(dir->i_sb); - return -EMLINK; - } inode->i_ctime = CURRENT_TIME_SEC; inode_inc_link_count(inode); @@ -183,10 +179,7 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir, static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode) { struct inode * inode; - int err = -EMLINK; - - if (dir->i_nlink >= UFS_LINK_MAX) - goto out; + int err; lock_ufs(dir->i_sb); inode_inc_link_count(dir); @@ -305,11 +298,6 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry, drop_nlink(new_inode); inode_dec_link_count(new_inode); } else { - if (dir_de) { - err = -EMLINK; - if (new_dir->i_nlink >= UFS_LINK_MAX) - goto out_dir; - } err = ufs_add_link(new_dentry, old_inode); if (err) goto out_dir; diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 5246ee3e560..f636f6b460d 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1157,16 +1157,17 @@ magic_found: "fast symlink size (%u)\n", uspi->s_maxsymlinklen); uspi->s_maxsymlinklen = maxsymlen; } + sb->s_max_links = UFS_LINK_MAX; inode = ufs_iget(sb, UFS_ROOTINO); if (IS_ERR(inode)) { ret = PTR_ERR(inode); goto failed; } - sb->s_root = d_alloc_root(inode); + sb->s_root = d_make_root(inode); if (!sb->s_root) { ret = -ENOMEM; - goto dalloc_failed; + goto failed; } ufs_setup_cstotal(sb); @@ -1180,8 +1181,6 @@ magic_found: UFSD("EXIT\n"); return 0; -dalloc_failed: - iput(inode); failed: if (ubh) ubh_brelse_uspi (uspi); diff --git a/fs/xattr.c b/fs/xattr.c index 82f43376c7c..d6dfd247bb2 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -16,7 +16,7 @@ #include <linux/security.h> #include <linux/evm.h> #include <linux/syscalls.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/fsnotify.h> #include <linux/audit.h> #include <asm/uaccess.h> diff --git a/fs/xattr_acl.c b/fs/xattr_acl.c index 8d5a506c82e..69d06b07b16 100644 --- a/fs/xattr_acl.c +++ b/fs/xattr_acl.c @@ -5,7 +5,7 @@ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ -#include <linux/module.h> +#include <linux/export.h> #include <linux/fs.h> #include <linux/posix_acl_xattr.h> #include <linux/gfp.h> diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index 866de277079..e44ef7ee8ce 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -118,17 +118,6 @@ xfs_rename( new_parent = (src_dp != target_dp); src_is_directory = S_ISDIR(src_ip->i_d.di_mode); - if (src_is_directory) { - /* - * Check for link count overflow on target_dp - */ - if (target_ip == NULL && new_parent && - target_dp->i_d.di_nlink >= XFS_MAXLINK) { - error = XFS_ERROR(EMLINK); - goto std_return; - } - } - xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, inodes, &num_inodes); diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index e1c623b43ab..dab9a5f6dfd 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1358,6 +1358,7 @@ xfs_fs_fill_super( sb->s_blocksize = mp->m_sb.sb_blocksize; sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); + sb->s_max_links = XFS_MAXLINK; sb->s_time_gran = 1; set_posix_acl_flag(sb); @@ -1378,10 +1379,10 @@ xfs_fs_fill_super( error = EINVAL; goto out_syncd_stop; } - sb->s_root = d_alloc_root(root); + sb->s_root = d_make_root(root); if (!sb->s_root) { error = ENOMEM; - goto out_iput; + goto out_syncd_stop; } return 0; @@ -1402,8 +1403,6 @@ out_destroy_workqueues: out: return -error; - out_iput: - iput(root); out_syncd_stop: xfs_syncd_stop(mp); out_unmount: diff --git a/fs/xfs/xfs_utils.c b/fs/xfs/xfs_utils.c index 89dbb4a5087..79c05ac85bf 100644 --- a/fs/xfs/xfs_utils.c +++ b/fs/xfs/xfs_utils.c @@ -296,8 +296,6 @@ xfs_bumplink( xfs_trans_t *tp, xfs_inode_t *ip) { - if (ip->i_d.di_nlink >= XFS_MAXLINK) - return XFS_ERROR(EMLINK); xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); ASSERT(ip->i_d.di_nlink > 0); diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index ebdb88840a4..64981d7e737 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -917,14 +917,6 @@ xfs_create( xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT); unlock_dp_on_error = B_TRUE; - /* - * Check for directory link count overflow. - */ - if (is_dir && dp->i_d.di_nlink >= XFS_MAXLINK) { - error = XFS_ERROR(EMLINK); - goto out_trans_cancel; - } - xfs_bmap_init(&free_list, &first_block); /* @@ -1429,14 +1421,6 @@ xfs_link( xfs_trans_ijoin(tp, tdp, XFS_ILOCK_EXCL); /* - * If the source has too many links, we can't make any more to it. - */ - if (sip->i_d.di_nlink >= XFS_MAXLINK) { - error = XFS_ERROR(EMLINK); - goto error_return; - } - - /* * If we are using project inheritance, we only allow hard link * creation in our tree when the project IDs are the same; else * the tree quota mechanism could be circumvented. |