[PATCH V7 1/6] blk-mq: only run hw queues for blk-mq
From: Ming Lei <hidden>
Date: 2017-09-30 06:12:47
Also in:
linux-scsi, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
This patch just makes it explicitely. Tested-by: Oleksandr Natalenko <redacted> Tested-by: Martin Steigerwald <redacted> Reviewed-by: Johannes Thumshirn <redacted> Cc: Bart Van Assche <redacted> Signed-off-by: Ming Lei <redacted> --- block/blk-mq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 98a18609755e..6fd9f86fc86d 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);
--
2.9.5