From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:46220 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751351AbdIKLLD (ORCPT ); Mon, 11 Sep 2017 07:11:03 -0400 From: Ming Lei To: Jens Axboe , linux-block@vger.kernel.org, Christoph Hellwig , linux-scsi@vger.kernel.org, "Martin K . Petersen" , "James E . J . Bottomley" Cc: Bart Van Assche , Oleksandr Natalenko , Johannes Thumshirn , Cathy Avery , Ming Lei Subject: [PATCH V4 01/10] blk-mq: only run hw queues for blk-mq Date: Mon, 11 Sep 2017 19:10:12 +0800 Message-Id: <20170911111021.25810-2-ming.lei@redhat.com> In-Reply-To: <20170911111021.25810-1-ming.lei@redhat.com> References: <20170911111021.25810-1-ming.lei@redhat.com> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org This patch just makes it explicitely. Reviewed-by: Johannes Thumshirn Signed-off-by: Ming Lei --- 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 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); -- 2.9.5