diff mbox

[V4,01/10] blk-mq: only run hw queues for blk-mq

Message ID 20170911111021.25810-2-ming.lei@redhat.com (mailing list archive)
State Superseded
Headers show

Commit Message

Ming Lei Sept. 11, 2017, 11:10 a.m. UTC 
This patch just makes it explicitely.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 block/blk-mq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3f18cff80050..9c364497cc44 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -125,7 +125,8 @@  void blk_freeze_queue_start(struct request_queue *q)
 	freeze_depth = atomic_inc_return(&q->mq_freeze_depth);
 	if (freeze_depth == 1) {
 		percpu_ref_kill(&q->q_usage_counter);
-		blk_mq_run_hw_queues(q, false);
+		if (q->mq_ops)
+			blk_mq_run_hw_queues(q, false);
 	}
 }
 EXPORT_SYMBOL_GPL(blk_freeze_queue_start);