From patchwork Tue Mar 7 14:15:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 13163659 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B4DFC678D4 for ; Tue, 7 Mar 2023 14:22:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231366AbjCGOWk (ORCPT ); Tue, 7 Mar 2023 09:22:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231439AbjCGOWP (ORCPT ); Tue, 7 Mar 2023 09:22:15 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 567D3867CE for ; Tue, 7 Mar 2023 06:17:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678198566; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/NBwVYnHSaZrYp0gKoT57Tl/vQn9azd4FuuYHvk1QnI=; b=UigyT633F3W18Zr+algCohnr4PlUfQIUKLGW5Q+wfAdSspGXmG2Bu/dndStjP5wUR2ePEo kGn9K5iweuaiblb5z+c+kOxn/5K0Zwk8uIZMUwSSC09Qsi3dPzSV3nOxHokxrao8HBsvx1 ApxnScYUxMr8cnzyqfZ5STddLTV9Vdk= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-564-0b6g09CRMgG8Ofc3pyTNSA-1; Tue, 07 Mar 2023 09:16:03 -0500 X-MC-Unique: 0b6g09CRMgG8Ofc3pyTNSA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9718838173CB; Tue, 7 Mar 2023 14:16:01 +0000 (UTC) Received: from localhost (ovpn-8-16.pek2.redhat.com [10.72.8.16]) by smtp.corp.redhat.com (Postfix) with ESMTP id C2D132026D4B; Tue, 7 Mar 2023 14:16:00 +0000 (UTC) From: Ming Lei To: Jens Axboe , io-uring@vger.kernel.org Cc: linux-block@vger.kernel.org, Miklos Szeredi , ZiyangZhang , Xiaoguang Wang , Bernd Schubert , Ming Lei Subject: [PATCH V2 07/17] block: ublk_drv: add common exit handling Date: Tue, 7 Mar 2023 22:15:10 +0800 Message-Id: <20230307141520.793891-8-ming.lei@redhat.com> In-Reply-To: <20230307141520.793891-1-ming.lei@redhat.com> References: <20230307141520.793891-1-ming.lei@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Simplify exit handling a bit, and prepare for supporting fused command. Reviewed-by: Ziyang Zhang Signed-off-by: Ming Lei --- drivers/block/ublk_drv.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 2778c14a8407..c03728c13eea 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -655,14 +655,15 @@ static void ublk_complete_rq(struct request *req) struct ublk_queue *ubq = req->mq_hctx->driver_data; struct ublk_io *io = &ubq->ios[req->tag]; unsigned int unmapped_bytes; + int res = BLK_STS_OK; /* failed read IO if nothing is read */ if (!io->res && req_op(req) == REQ_OP_READ) io->res = -EIO; if (io->res < 0) { - blk_mq_end_request(req, errno_to_blk_status(io->res)); - return; + res = errno_to_blk_status(io->res); + goto exit; } /* @@ -671,10 +672,8 @@ static void ublk_complete_rq(struct request *req) * * Both the two needn't unmap. */ - if (req_op(req) != REQ_OP_READ && req_op(req) != REQ_OP_WRITE) { - blk_mq_end_request(req, BLK_STS_OK); - return; - } + if (req_op(req) != REQ_OP_READ && req_op(req) != REQ_OP_WRITE) + goto exit; /* for READ request, writing data in iod->addr to rq buffers */ unmapped_bytes = ublk_unmap_io(ubq, req, io); @@ -691,6 +690,10 @@ static void ublk_complete_rq(struct request *req) blk_mq_requeue_request(req, true); else __blk_mq_end_request(req, BLK_STS_OK); + + return; +exit: + blk_mq_end_request(req, res); } /*