From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Snitzer Subject: [PATCH 1/7 v2] blk-mq: fix use of incorrect goto label in blk_mq_init_queue error path Date: Thu, 12 Mar 2015 10:27:30 -0400 Message-ID: <20150312142730.GA3159@redhat.com> References: <1426132602-34331-1-git-send-email-snitzer@redhat.com> <1426132602-34331-2-git-send-email-snitzer@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx1.redhat.com ([209.132.183.28]:53764 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753902AbbCLO1h (ORCPT ); Thu, 12 Mar 2015 10:27:37 -0400 Content-Disposition: inline In-Reply-To: <1426132602-34331-2-git-send-email-snitzer@redhat.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Jens Axboe , Keith Busch Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, dm-devel@redhat.com, Ming Lei If percpu_ref_init() fails the 'err_hctxs' label should be used instead of 'err_map'. Rather than reuse 'err_hw', which was introduced if the later blk_mq_init_hw_queues() call fails, move percpu_ref_init() before blk_alloc_queue_node(). Signed-off-by: Mike Snitzer Reviewed-by: Ming Lei --- block/blk-mq.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 4f4bea2..0a877d2 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1928,17 +1928,17 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) hctxs[i]->queue_num = i; } - q = blk_alloc_queue_node(GFP_KERNEL, set->numa_node); - if (!q) - goto err_hctxs; - /* * Init percpu_ref in atomic mode so that it's faster to shutdown. * See blk_register_queue() for details. */ if (percpu_ref_init(&q->mq_usage_counter, blk_mq_usage_counter_release, PERCPU_REF_INIT_ATOMIC, GFP_KERNEL)) - goto err_map; + goto err_hctxs; + + q = blk_alloc_queue_node(GFP_KERNEL, set->numa_node); + if (!q) + goto err_hctxs; setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q); blk_queue_rq_timeout(q, 30000); -- 1.9.5 (Apple Git-50.3)