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>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index e602c8c67c5c..e9ad7894648e 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -907,7 +907,7 @@ xfs_fs_dirty_inode(
         ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
 
         xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
-        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+        xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
         error = xfs_trans_commit(tp, 0);
         if (error)
                 goto trouble;