[PATCH] ocfs2: relative atime support

Update ocfs2_should_update_atime() to understand the MNT_RELATIME flag and
to test against mtime / ctime accordingly.

[akpm@osdl.org: cleanups]
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Valerie Henson <val_henson@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index e9a82ad95c1e..9fd590b9bde3 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -153,6 +153,14 @@ int ocfs2_should_update_atime(struct inode *inode,
             ((vfsmnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
                 return 0;
 
+        if (vfsmnt->mnt_flags & MNT_RELATIME) {
+                if ((timespec_compare(&inode->i_atime, &inode->i_mtime) <= 0) ||
+                    (timespec_compare(&inode->i_atime, &inode->i_ctime) <= 0))
+                        return 1;
+
+                return 0;
+        }
+
         now = CURRENT_TIME;
         if ((now.tv_sec - inode->i_atime.tv_sec <= osb->s_atime_quantum))
                 return 0;