ocfs2 patch to track delayed orphan scan timer statistics

Patch to track delayed orphan scan timer statistics.

Modifies ocfs2_osb_dump to print the following:
  Orphan Scan=> Local: 10  Global: 21  Last Scan: 67 seconds ago

Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 44ed768782ed..4a3b9e6b31ad 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -1900,6 +1900,8 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
          * number and update LVB so other node will skip the scan for a while
          */
         seqno++;
+        os->os_count++;
+        os->os_scantime = CURRENT_TIME;
 unlock:
         ocfs2_orphan_scan_unlock(osb, seqno, DLM_LOCK_EX);
 out:
@@ -1939,6 +1941,8 @@ int ocfs2_orphan_scan_init(struct ocfs2_super *osb)
 
         os = &osb->osb_orphan_scan;
         os->os_osb = osb;
+        os->os_count = 0;
+        os->os_scantime = CURRENT_TIME;
         mutex_init(&os->os_lock);
 
         INIT_DELAYED_WORK(&os->os_orphan_scan_work,