Ocfs2 devel - Mar 2016 - [patch 24/25] ocfs2: o2hb: fix hb hung time

From: Junxiao Bi <junxiao.bi at oracle.com>
Subject: ocfs2: o2hb: fix hb hung time

hr_last_timeout_start should be set as the last time where hb is still OK.
When hb write timeout, hung time will be (jiffies -
hr_last_timeout_start).

Signed-off-by: Junxiao Bi <junxiao.bi at oracle.com>
Reviewed-by: Ryan Ding <ryan.ding at oracle.com>
Cc: Gang He <ghe at suse.com>
Cc: rwxybh <rwxybh at 126.com>
Cc: Mark Fasheh <mfasheh at suse.de>
Cc: Joel Becker <jlbec at evilplan.org>
Cc: Joseph Qi <joseph.qi at huawei.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
---

 fs/ocfs2/cluster/heartbeat.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/ocfs2/cluster/heartbeat.c~ocfs2-o2hb-fix-hb-hung-time
fs/ocfs2/cluster/heartbeat.c
--- a/fs/ocfs2/cluster/heartbeat.c~ocfs2-o2hb-fix-hb-hung-time
+++ a/fs/ocfs2/cluster/heartbeat.c
@@ -356,7 +356,6 @@ static void o2hb_arm_timeout(struct o2hb
 		spin_unlock(&o2hb_live_lock);
 	}
 	cancel_delayed_work(&reg->hr_write_timeout_work);
-	reg->hr_last_timeout_start = jiffies;
 	schedule_delayed_work(&reg->hr_write_timeout_work,
 			      msecs_to_jiffies(O2HB_MAX_WRITE_TIMEOUT_MS));
 
@@ -1175,6 +1174,7 @@ static int o2hb_do_disk_heartbeat(struct
 	if (own_slot_ok) {
 		o2hb_set_quorum_device(reg);
 		o2hb_arm_timeout(reg);
+		reg->hr_last_timeout_start = jiffies;
 	}
 
 bail:
_