From: Alexander Zarochentsev <alexander.zarochentsev@seagate.com>
Date: Fri, 16 Feb 2018 18:06:57 +0000 (-0500)
Subject: LU-5695 libcfs: watchdog dispatch thread fix
X-Git-Tag: 2.10.59~87
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=1947bc08c0709ad80611dc65785ccb8dbf7f7214

LU-5695 libcfs: watchdog dispatch thread fix

lc_watchdogd may stop imediately after start
because nobody clears the stop flag.

Xyratex-bug-id: MRP-2108 MRP-1913
Change-Id: I1eaaf0330c111b7f2b17081c716ef8c200677d6b
Signed-off-by: Alexander Zarochentsev <alexander.zarochentsev@seagate.com>
Reviewed-on: https://review.whamcloud.com/12155
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/libcfs/libcfs/watchdog.c b/libcfs/libcfs/watchdog.c
index 4f18e3c..524b4b5 100644
--- a/libcfs/libcfs/watchdog.c
+++ b/libcfs/libcfs/watchdog.c
@@ -335,6 +335,7 @@ static void lcw_dispatch_stop(void)
 	wake_up(&lcw_event_waitq);
 
 	wait_for_completion(&lcw_stop_completion);
+	clear_bit(LCW_FLAG_STOP, &lcw_flags);
 
 	CDEBUG(D_INFO, "watchdog dispatcher has shut down.\n");