[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>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index f63646ead816..41f50e7d1c32 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -56,6 +56,7 @@ xfs_bulkstat_one_iget(
 {
         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 @@ xfs_bulkstat_one_iget(
                 goto out_iput;
         }
 
+        vp = XFS_ITOV(ip);
         dic = &ip->i_d;
 
         /* xfs_iget returns the following without needing
@@ -84,8 +86,9 @@ xfs_bulkstat_one_iget(
         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;