[PATCH 28/39] staging/lustre/ldlm: ldlm_flock_deadlock() ASSERTION( req != lock ) failed

[Peng Tao <bergwolf@gmail.com>]

From: Andriy Skulysh <Andriy_Skulysh@xyratex.com>

Abort processing of flock blockers list
on reaching disconnected export

Lustre-change: http://review.whamcloud.com/7392
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3783
Signed-off-by: Andriy Skulysh <Andriy_Skulysh@xyratex.com>
Reviewed-by: Keith Mannthey <keith.mannthey@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_flock.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
index 6324eff..d4598b6 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
@@ -195,6 +195,9 @@ ldlm_flock_deadlock(struct ldlm_lock *req, struct ldlm_lock *bl_lock)
 		cfs_hash_put(bl_exp->exp_flock_hash, &lock->l_exp_flock_hash);
 		bl_exp = bl_exp_new;
 
+		if (bl_exp->exp_failed)
+			break;
+
 		if (bl_owner == req_owner && bl_exp == req_exp) {
 			class_export_put(bl_exp);
 			return 1;
-- 
1.7.9.5