From patchwork Thu Nov 15 17:56:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 10684781 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6A85913BB for ; Thu, 15 Nov 2018 17:59:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5A56C2CE14 for ; Thu, 15 Nov 2018 17:59:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 49EBE2CEAF; Thu, 15 Nov 2018 17:59:53 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable 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 E70892CE14 for ; Thu, 15 Nov 2018 17:59:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388427AbeKPEIl (ORCPT ); Thu, 15 Nov 2018 23:08:41 -0500 Received: from mga11.intel.com ([192.55.52.93]:61131 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726453AbeKPEIl (ORCPT ); Thu, 15 Nov 2018 23:08:41 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Nov 2018 09:59:51 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,237,1539673200"; d="scan'208";a="280206591" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.112.69]) by fmsmga005.fm.intel.com with ESMTP; 15 Nov 2018 09:59:50 -0800 From: Keith Busch To: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org Cc: Jens Axboe , Martin Petersen , Bart Van Assche , Keith Busch Subject: [PATCH 1/3] blk-mq: Return true if request was completed Date: Thu, 15 Nov 2018 10:56:24 -0700 Message-Id: <20181115175626.13293-1-keith.busch@intel.com> X-Mailer: git-send-email 2.13.6 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP A driver may have internal state to cleanup if we're pretending a request timeout occured. Return 'false' if the command wasn't actually completed due to the error injection, and true otherwise. Signed-off-by: Keith Busch --- block/blk-mq.c | 5 +++-- include/linux/blk-mq.h | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 3f91c6e5b17a..f91951800a64 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -630,11 +630,12 @@ static void hctx_lock(struct blk_mq_hw_ctx *hctx, int *srcu_idx) * Ends all I/O on a request. It does not handle partial completions. * The actual completion happens out-of-order, through a IPI handler. **/ -void blk_mq_complete_request(struct request *rq) +bool blk_mq_complete_request(struct request *rq) { if (unlikely(blk_should_fake_timeout(rq->q))) - return; + return false; __blk_mq_complete_request(rq); + return true; } EXPORT_SYMBOL(blk_mq_complete_request); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 2286dc12c6bc..dec6ef385492 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -264,7 +264,7 @@ void blk_mq_add_to_requeue_list(struct request *rq, bool at_head, bool kick_requeue_list); void blk_mq_kick_requeue_list(struct request_queue *q); void blk_mq_delay_kick_requeue_list(struct request_queue *q, unsigned long msecs); -void blk_mq_complete_request(struct request *rq); +bool blk_mq_complete_request(struct request *rq); bool blk_mq_bio_list_merge(struct request_queue *q, struct list_head *list, struct bio *bio); bool blk_mq_queue_stopped(struct request_queue *q);