ocfs2: clean up mount option about atime in ocfs2.txt

As ocfs2 supports relatime and strictatime, we need update the
relative document. Atime_quantum need work with strictatime, so only
show it in procfs when mount with strictatime.

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>

2 files changed, 8 insertions, 2 deletions

diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt
index 9ed920a8cd79..7618a287aa41 100644
--- a/Documentation/filesystems/ocfs2.txt
+++ b/Documentation/filesystems/ocfs2.txt
@@ -46,9 +46,15 @@ errors=panic		Panic and halt the machine if an error occurs.
 intr            (*)     Allow signals to interrupt cluster operations.
 nointr                  Do not allow signals to interrupt cluster
                         operations.
+noatime                 Do not update access time.
+relatime(*)             Update atime if the previous atime is older than
+                        mtime or ctime
+strictatime             Always update atime, but the minimum update interval
+                        is specified by atime_quantum.
 atime_quantum=60(*)     OCFS2 will not update atime unless this number
                         of seconds has passed since the last update.
-                        Set to zero to always update atime.
+                        Set to zero to always update atime. This option need
+                        work with strictatime.
 data=ordered    (*)     All data are forced directly out to the main file
                         system prior to its metadata being committed to the
                         journal.
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 5a521c748859..823bc35334e0 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1566,7 +1566,7 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
         if (osb->preferred_slot != OCFS2_INVALID_SLOT)
                 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
 
-        if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
+        if (!(mnt->mnt_flags & MNT_NOATIME) && !(mnt->mnt_flags & MNT_RELATIME))
                 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
 
         if (osb->osb_commit_interval)