From patchwork Tue Jun 6 15:22:02 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 9769151 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3605F60364 for ; Tue, 6 Jun 2017 15:23:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 474AE27D4D for ; Tue, 6 Jun 2017 15:23:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3C3AE2847E; Tue, 6 Jun 2017 15:23:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B702127D4D for ; Tue, 6 Jun 2017 15:23:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751390AbdFFPX1 (ORCPT ); Tue, 6 Jun 2017 11:23:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39212 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751281AbdFFPX0 (ORCPT ); Tue, 6 Jun 2017 11:23:26 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 714AE4E04A; Tue, 6 Jun 2017 15:23:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 714AE4E04A Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=ming.lei@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 714AE4E04A Received: from localhost (ovpn-12-72.pek2.redhat.com [10.72.12.72]) by smtp.corp.redhat.com (Postfix) with ESMTP id D1A815C3FD; Tue, 6 Jun 2017 15:23:03 +0000 (UTC) From: Ming Lei To: Jens Axboe , linux-block@vger.kernel.org, Christoph Hellwig Cc: Bart Van Assche , Ming Lei Subject: [PATCH v5 04/12] blk-mq: introduce blk_mq_quiesce_queue_nowait() Date: Tue, 6 Jun 2017 23:22:02 +0800 Message-Id: <20170606152210.22806-5-ming.lei@redhat.com> In-Reply-To: <20170606152210.22806-1-ming.lei@redhat.com> References: <20170606152210.22806-1-ming.lei@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Tue, 06 Jun 2017 15:23:12 +0000 (UTC) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch introduces blk_mq_quiesce_queue_nowait() so that we can workaround mpt3sas for quiescing its queue. Once mpt3sas is fixed, we can remove this helper. Reviewed-by: Bart Van Assche Signed-off-by: Ming Lei --- include/linux/blk-mq.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 1e480015d172..13d1196f492f 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -266,6 +266,14 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); /* + * FIXME: this helper is just for working around mpt3sas. + */ +static inline void blk_mq_quiesce_queue_nowait(struct request_queue *q) +{ + blk_mq_stop_hw_queues(q); +} + +/* * Driver command data is immediately after the request. So subtract request * size to get back to the original request, add request size to get the PDU. */