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Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c122
1 files changed, 94 insertions, 28 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 83d6f9f9c22..99545df1b86 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -55,6 +55,7 @@
#include "export.h"
#include "compression.h"
#include "rcu-string.h"
+#include "dev-replace.h"
#define CREATE_TRACE_POINTS
#include <trace/events/btrfs.h>
@@ -116,7 +117,16 @@ static void btrfs_handle_error(struct btrfs_fs_info *fs_info)
if (fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
sb->s_flags |= MS_RDONLY;
printk(KERN_INFO "btrfs is forced readonly\n");
- __btrfs_scrub_cancel(fs_info);
+ /*
+ * Note that a running device replace operation is not
+ * canceled here although there is no way to update
+ * the progress. It would add the risk of a deadlock,
+ * therefore the canceling is ommited. The only penalty
+ * is that some I/O remains active until the procedure
+ * completes. The next time when the filesystem is
+ * mounted writeable again, the device replace
+ * operation continues.
+ */
// WARN_ON(1);
}
}
@@ -243,12 +253,18 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *function,
unsigned int line, int errno)
{
- WARN_ONCE(1, KERN_DEBUG "btrfs: Transaction aborted");
+ WARN_ONCE(1, KERN_DEBUG "btrfs: Transaction aborted\n");
trans->aborted = errno;
/* Nothing used. The other threads that have joined this
* transaction may be able to continue. */
if (!trans->blocks_used) {
- btrfs_printk(root->fs_info, "Aborting unused transaction.\n");
+ char nbuf[16];
+ const char *errstr;
+
+ errstr = btrfs_decode_error(root->fs_info, errno, nbuf);
+ btrfs_printk(root->fs_info,
+ "%s:%d: Aborting unused transaction(%s).\n",
+ function, line, errstr);
return;
}
trans->transaction->aborted = errno;
@@ -407,7 +423,15 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, NODATASUM);
break;
case Opt_nodatacow:
- printk(KERN_INFO "btrfs: setting nodatacow\n");
+ if (!btrfs_test_opt(root, COMPRESS) ||
+ !btrfs_test_opt(root, FORCE_COMPRESS)) {
+ printk(KERN_INFO "btrfs: setting nodatacow, compression disabled\n");
+ } else {
+ printk(KERN_INFO "btrfs: setting nodatacow\n");
+ }
+ info->compress_type = BTRFS_COMPRESS_NONE;
+ btrfs_clear_opt(info->mount_opt, COMPRESS);
+ btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS);
btrfs_set_opt(info->mount_opt, NODATACOW);
btrfs_set_opt(info->mount_opt, NODATASUM);
break;
@@ -422,10 +446,14 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
compress_type = "zlib";
info->compress_type = BTRFS_COMPRESS_ZLIB;
btrfs_set_opt(info->mount_opt, COMPRESS);
+ btrfs_clear_opt(info->mount_opt, NODATACOW);
+ btrfs_clear_opt(info->mount_opt, NODATASUM);
} else if (strcmp(args[0].from, "lzo") == 0) {
compress_type = "lzo";
info->compress_type = BTRFS_COMPRESS_LZO;
btrfs_set_opt(info->mount_opt, COMPRESS);
+ btrfs_clear_opt(info->mount_opt, NODATACOW);
+ btrfs_clear_opt(info->mount_opt, NODATASUM);
btrfs_set_fs_incompat(info, COMPRESS_LZO);
} else if (strncmp(args[0].from, "no", 2) == 0) {
compress_type = "no";
@@ -543,11 +571,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
btrfs_set_opt(info->mount_opt, ENOSPC_DEBUG);
break;
case Opt_defrag:
- printk(KERN_INFO "btrfs: enabling auto defrag");
+ printk(KERN_INFO "btrfs: enabling auto defrag\n");
btrfs_set_opt(info->mount_opt, AUTO_DEFRAG);
break;
case Opt_recovery:
- printk(KERN_INFO "btrfs: enabling auto recovery");
+ printk(KERN_INFO "btrfs: enabling auto recovery\n");
btrfs_set_opt(info->mount_opt, RECOVERY);
break;
case Opt_skip_balance:
@@ -846,18 +874,15 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
return 0;
}
- btrfs_wait_ordered_extents(root, 0, 0);
+ btrfs_wait_ordered_extents(root, 0);
- spin_lock(&fs_info->trans_lock);
- if (!fs_info->running_transaction) {
- spin_unlock(&fs_info->trans_lock);
- return 0;
- }
- spin_unlock(&fs_info->trans_lock);
-
- trans = btrfs_join_transaction(root);
- if (IS_ERR(trans))
+ trans = btrfs_attach_transaction(root);
+ if (IS_ERR(trans)) {
+ /* no transaction, don't bother */
+ if (PTR_ERR(trans) == -ENOENT)
+ return 0;
return PTR_ERR(trans);
+ }
return btrfs_commit_transaction(trans, root);
}
@@ -1171,7 +1196,8 @@ static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,
btrfs_set_max_workers(&fs_info->endio_freespace_worker, new_pool_size);
btrfs_set_max_workers(&fs_info->delayed_workers, new_pool_size);
btrfs_set_max_workers(&fs_info->readahead_workers, new_pool_size);
- btrfs_set_max_workers(&fs_info->scrub_workers, new_pool_size);
+ btrfs_set_max_workers(&fs_info->scrub_wr_completion_workers,
+ new_pool_size);
}
static int btrfs_remount(struct super_block *sb, int *flags, char *data)
@@ -1200,8 +1226,15 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
return 0;
if (*flags & MS_RDONLY) {
+ /*
+ * this also happens on 'umount -rf' or on shutdown, when
+ * the filesystem is busy.
+ */
sb->s_flags |= MS_RDONLY;
+ btrfs_dev_replace_suspend_for_unmount(fs_info);
+ btrfs_scrub_cancel(fs_info);
+
ret = btrfs_commit_super(root);
if (ret)
goto restore;
@@ -1211,6 +1244,15 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
goto restore;
}
+ if (fs_info->fs_devices->missing_devices >
+ fs_info->num_tolerated_disk_barrier_failures &&
+ !(*flags & MS_RDONLY)) {
+ printk(KERN_WARNING
+ "Btrfs: too many missing devices, writeable remount is not allowed\n");
+ ret = -EACCES;
+ goto restore;
+ }
+
if (btrfs_super_log_root(fs_info->super_copy) != 0) {
ret = -EINVAL;
goto restore;
@@ -1229,6 +1271,11 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
if (ret)
goto restore;
+ ret = btrfs_resume_dev_replace_async(fs_info);
+ if (ret) {
+ pr_warn("btrfs: failed to resume dev_replace\n");
+ goto restore;
+ }
sb->s_flags &= ~MS_RDONLY;
}
@@ -1321,7 +1368,8 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
min_stripe_size = BTRFS_STRIPE_LEN;
list_for_each_entry(device, &fs_devices->devices, dev_list) {
- if (!device->in_fs_metadata || !device->bdev)
+ if (!device->in_fs_metadata || !device->bdev ||
+ device->is_tgtdev_for_dev_replace)
continue;
avail_space = device->total_bytes - device->bytes_used;
@@ -1508,17 +1556,21 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
static int btrfs_freeze(struct super_block *sb)
{
- struct btrfs_fs_info *fs_info = btrfs_sb(sb);
- mutex_lock(&fs_info->transaction_kthread_mutex);
- mutex_lock(&fs_info->cleaner_mutex);
- return 0;
+ struct btrfs_trans_handle *trans;
+ struct btrfs_root *root = btrfs_sb(sb)->tree_root;
+
+ trans = btrfs_attach_transaction(root);
+ if (IS_ERR(trans)) {
+ /* no transaction, don't bother */
+ if (PTR_ERR(trans) == -ENOENT)
+ return 0;
+ return PTR_ERR(trans);
+ }
+ return btrfs_commit_transaction(trans, root);
}
static int btrfs_unfreeze(struct super_block *sb)
{
- struct btrfs_fs_info *fs_info = btrfs_sb(sb);
- mutex_unlock(&fs_info->cleaner_mutex);
- mutex_unlock(&fs_info->transaction_kthread_mutex);
return 0;
}
@@ -1595,7 +1647,7 @@ static int btrfs_interface_init(void)
static void btrfs_interface_exit(void)
{
if (misc_deregister(&btrfs_misc) < 0)
- printk(KERN_INFO "misc_deregister failed for control device");
+ printk(KERN_INFO "btrfs: misc_deregister failed for control device\n");
}
static int __init init_btrfs_fs(void)
@@ -1620,14 +1672,22 @@ static int __init init_btrfs_fs(void)
if (err)
goto free_extent_io;
- err = btrfs_delayed_inode_init();
+ err = ordered_data_init();
if (err)
goto free_extent_map;
- err = btrfs_interface_init();
+ err = btrfs_delayed_inode_init();
+ if (err)
+ goto free_ordered_data;
+
+ err = btrfs_auto_defrag_init();
if (err)
goto free_delayed_inode;
+ err = btrfs_interface_init();
+ if (err)
+ goto free_auto_defrag;
+
err = register_filesystem(&btrfs_fs_type);
if (err)
goto unregister_ioctl;
@@ -1639,8 +1699,12 @@ static int __init init_btrfs_fs(void)
unregister_ioctl:
btrfs_interface_exit();
+free_auto_defrag:
+ btrfs_auto_defrag_exit();
free_delayed_inode:
btrfs_delayed_inode_exit();
+free_ordered_data:
+ ordered_data_exit();
free_extent_map:
extent_map_exit();
free_extent_io:
@@ -1656,7 +1720,9 @@ free_compress:
static void __exit exit_btrfs_fs(void)
{
btrfs_destroy_cachep();
+ btrfs_auto_defrag_exit();
btrfs_delayed_inode_exit();
+ ordered_data_exit();
extent_map_exit();
extent_io_exit();
btrfs_interface_exit();
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 09:02:12 +0000