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| author | Brian Foster <bfoster@redhat.com> | 2012-11-07 12:21:12 -0500 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-11-08 15:27:49 -0600 |
| commit | 8ca149de80478441352a8622ea15fae7de703ced (patch) | |
| tree | d98cd5200aa1180b01925a400fe6e4155e0e5a0b | |
| parent | 41176a68e3f710630feace536d0277a092e206b5 (diff) | |
| download | olio-linux-3.10-8ca149de80478441352a8622ea15fae7de703ced.tar.xz olio-linux-3.10-8ca149de80478441352a8622ea15fae7de703ced.zip | |
xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl
The XFS_IOC_FREE_EOFBLOCKS ioctl allows users to invoke an EOFBLOCKS
scan. The xfs_eofblocks structure is defined to support the command
parameters (scan mode).
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
| -rw-r--r-- | fs/xfs/xfs_fs.h | 17 | ||||
| -rw-r--r-- | fs/xfs/xfs_icache.c | 10 | ||||
| -rw-r--r-- | fs/xfs/xfs_icache.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 20 |
4 files changed, 45 insertions, 4 deletions
diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index 0948c043443..0cfa30813b1 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -340,6 +340,22 @@ typedef struct xfs_error_injection { /* + * Speculative preallocation trimming. + */ +#define XFS_EOFBLOCKS_VERSION 1 +struct xfs_eofblocks { + __u32 eof_version; + __u32 eof_flags; + __u64 pad[15]; +}; + +/* eof_flags values */ +#define XFS_EOF_FLAGS_SYNC (1 << 0) /* sync/wait mode scan */ +#define XFS_EOF_FLAGS_VALID \ + (XFS_EOF_FLAGS_SYNC) + + +/* * The user-level Handle Request interface structure. */ typedef struct xfs_fsop_handlereq { @@ -457,6 +473,7 @@ typedef struct xfs_handle { /* XFS_IOC_GETBIOSIZE ---- deprecated 47 */ #define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap) #define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64) +#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_eofblocks) /* * ioctl commands that replace IRIX syssgi()'s diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index d115cb44b10..fbb74c71526 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -1206,11 +1206,15 @@ xfs_inode_free_eofblocks( int xfs_icache_free_eofblocks( struct xfs_mount *mp, - int flags) + struct xfs_eofblocks *eofb) { - ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0); + int flags = SYNC_TRYLOCK; + + if (eofb && (eofb->eof_flags & XFS_EOF_FLAGS_SYNC)) + flags = SYNC_WAIT; + return xfs_inode_ag_iterator_tag(mp, xfs_inode_free_eofblocks, flags, - NULL, XFS_ICI_EOFBLOCKS_TAG); + eofb, XFS_ICI_EOFBLOCKS_TAG); } void diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h index cb6b8d0eee6..4934a77024c 100644 --- a/fs/xfs/xfs_icache.h +++ b/fs/xfs/xfs_icache.h @@ -37,7 +37,7 @@ void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); -int xfs_icache_free_eofblocks(struct xfs_mount *, int); +int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); int xfs_sync_inode_grab(struct xfs_inode *ip); int xfs_inode_ag_iterator(struct xfs_mount *mp, diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index c1df3c623de..5b20ab0b4f9 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -42,6 +42,7 @@ #include "xfs_inode_item.h" #include "xfs_export.h" #include "xfs_trace.h" +#include "xfs_icache.h" #include <linux/capability.h> #include <linux/dcache.h> @@ -1602,6 +1603,25 @@ xfs_file_ioctl( error = xfs_errortag_clearall(mp, 1); return -error; + case XFS_IOC_FREE_EOFBLOCKS: { + struct xfs_eofblocks eofb; + + if (copy_from_user(&eofb, arg, sizeof(eofb))) + return -XFS_ERROR(EFAULT); + + if (eofb.eof_version != XFS_EOFBLOCKS_VERSION) + return -XFS_ERROR(EINVAL); + + if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID) + return -XFS_ERROR(EINVAL); + + if (memchr_inv(eofb.pad, 0, sizeof(eofb.pad))) + return -XFS_ERROR(EINVAL); + + error = xfs_icache_free_eofblocks(mp, &eofb); + return -error; + } + default: return -ENOTTY; } |