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authorDavid Chinner <dgc@sgi.com>2007-11-23 16:29:18 +1100
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-02-07 18:16:07 +1100
commit5d51eff4538bdfeb9b7a2ec030ee3b0980b067d2 (patch)
tree27606a34eab830ccc9a066f14f598af0c0c9027c /fs/xfs/xfs_inode.h
parente4143a1cf5973e3443c0650fc4c35292d3b7baa8 (diff)
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op-kernel-dev-5d51eff4538bdfeb9b7a2ec030ee3b0980b067d2.tar.gz
[XFS] Fix inode allocation latency
The log force added in xfs_iget_core() has been a performance issue since it was introduced for tight loops that allocate then unlink a single file. under heavy writeback, this can introduce unnecessary latency due tothe log I/o getting stuck behind bulk data writes. Fix this latency problem by avoinding the need for the log force by moving the place we mark linux inode dirty to the transaction commit rather than on transaction completion. This also closes a potential hole in the sync code where a linux inode is not dirty between the time it is modified and the time the log buffer has been written to disk. SGI-PV: 972753 SGI-Modid: xfs-linux-melb:xfs-kern:30007a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode.h')
-rw-r--r--fs/xfs/xfs_inode.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index d8ed51e..bc869fd 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -532,6 +532,7 @@ xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
void xfs_lock_inodes(xfs_inode_t **, int, int, uint);
void xfs_synchronize_atime(xfs_inode_t *);
+void xfs_mark_inode_dirty_sync(xfs_inode_t *);
xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
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