[XFS] fix, speedup and simplify atime handling let the VFS handle atime
updates and only sync back to the xfs inode when nessecary
SGI-PV: 946679
SGI-Modid: xfs-linux-melb:xfs-kern:203362a
Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index f63646e..41f50e7 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -56,6 +56,7 @@
{
xfs_dinode_core_t *dic; /* dinode core info pointer */
xfs_inode_t *ip; /* incore inode pointer */
+ vnode_t *vp;
int error;
error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, bno);
@@ -72,6 +73,7 @@
goto out_iput;
}
+ vp = XFS_ITOV(ip);
dic = &ip->i_d;
/* xfs_iget returns the following without needing
@@ -84,8 +86,9 @@
buf->bs_uid = dic->di_uid;
buf->bs_gid = dic->di_gid;
buf->bs_size = dic->di_size;
- buf->bs_atime.tv_sec = dic->di_atime.t_sec;
- buf->bs_atime.tv_nsec = dic->di_atime.t_nsec;
+ /* atime is only kept uptodate in the Linux inode */
+ buf->bs_atime.tv_sec = vp->v_inode.i_atime.tv_sec;
+ buf->bs_atime.tv_nsec = vp->v_inode.i_atime.tv_nsec;
buf->bs_mtime.tv_sec = dic->di_mtime.t_sec;
buf->bs_mtime.tv_nsec = dic->di_mtime.t_nsec;
buf->bs_ctime.tv_sec = dic->di_ctime.t_sec;