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authorChristoph Hellwig <hch@infradead.org>2011-10-02 14:25:16 +0000
committerAlex Elder <aelder@sgi.com>2011-10-11 21:15:09 -0500
commit1da2f2dbf2d2aaa1b0f6ca2f61fcf07e24eb659b (patch)
tree41340d0cb08191d0bba677391e238d3771443033 /fs/xfs/xfs_trace.h
parent670ce93fef93bba8c8a422a79747385bec8e846a (diff)
xfs: optimize fsync on directories
Directories are only updated transactionally, which means fsync only needs to flush the log the inode is currently dirty, but not bother with checking for dirty data, non-transactional updates, and most importanly doesn't have to flush disk caches except as part of a transaction commit. While the first two optimizations can't easily be measured, the latter actually makes a difference when doing lots of fsync that do not actually have to commit the inode, e.g. because an earlier fsync already pushed the log far enough. The new xfs_dir_fsync is identical to xfs_nfs_commit_metadata except for the prototype, but I'm not sure creating a common helper for the two is worth it given how simple the functions are. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
-rw-r--r--fs/xfs/xfs_trace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index bb5e660e0fa..b78f2c65438 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -576,6 +576,7 @@ DEFINE_INODE_EVENT(xfs_vm_bmap);
DEFINE_INODE_EVENT(xfs_file_ioctl);
DEFINE_INODE_EVENT(xfs_file_compat_ioctl);
DEFINE_INODE_EVENT(xfs_ioctl_setattr);
+DEFINE_INODE_EVENT(xfs_dir_fsync);
DEFINE_INODE_EVENT(xfs_file_fsync);
DEFINE_INODE_EVENT(xfs_destroy_inode);
DEFINE_INODE_EVENT(xfs_write_inode);