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authorChristoph Hellwig <hch@infradead.org>2012-02-29 09:53:55 +0000
committerBen Myers <bpm@sgi.com>2012-03-13 17:18:14 -0500
commit8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d (patch)
treed2b90c868fd3ad818317e3fff8448d6940afb3d5 /fs/xfs/xfs_file.c
parentf5d8d5c4bf29c9f7754d9cbe5e27c785106ba872 (diff)
downloadop-kernel-dev-8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d.zip
op-kernel-dev-8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d.tar.gz
xfs: reimplement fdatasync support
Add an in-memory only flag to say we logged timestamps only, and use it to check if fdatasync can optimize away the log force. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_file.c')
-rw-r--r--fs/xfs/xfs_file.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 78d8b02..54a67dd 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -197,8 +197,11 @@ xfs_file_fsync(
* to flush the log up to the latest LSN that touched the inode.
*/
xfs_ilock(ip, XFS_ILOCK_SHARED);
- if (xfs_ipincount(ip))
- lsn = ip->i_itemp->ili_last_lsn;
+ if (xfs_ipincount(ip)) {
+ if (!datasync ||
+ (ip->i_itemp->ili_fields & ~XFS_ILOG_TIMESTAMP))
+ lsn = ip->i_itemp->ili_last_lsn;
+ }
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (lsn)
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