From patchwork Thu Aug 24 14:44:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chengming Zhou X-Patchwork-Id: 13364316 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 8EAC6C83003 for ; Thu, 24 Aug 2023 14:46:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241730AbjHXOpe (ORCPT ); Thu, 24 Aug 2023 10:45:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241743AbjHXOpZ (ORCPT ); Thu, 24 Aug 2023 10:45:25 -0400 Received: from out-6.mta1.migadu.com (out-6.mta1.migadu.com [95.215.58.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F6271BC6 for ; Thu, 24 Aug 2023 07:45:22 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1692888321; 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=zNMIjrcjjgLtOR47Ivp/pWFjvTNQF2gw34heMee5wC0=; b=szAF17CsZXJ3rsgIWhZDvvPDDCZ+0LKs7QcffukGw3yP+NwTajtWYV5l9u1BFdXMTMcrvC PTN43prCMhw1klaOb0ULkbBxn9i+FefrzJdRNDCJ/sBDGSe1d+N5IErcpX1IeVTTSDHj0Z k4Ak3o63jDl+d48mHBU+euzjOgnFCVs= From: chengming.zhou@linux.dev To: axboe@kernel.dk, hch@lst.de, ming.lei@redhat.com, bvanassche@acm.org, kbusch@kernel.org Cc: mst@redhat.com, sagi@grimberg.me, damien.lemoal@opensource.wdc.com, kch@nvidia.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, zhouchengming@bytedance.com Subject: [PATCH 4/6] blk-mq: update driver tags request table when start request Date: Thu, 24 Aug 2023 22:44:01 +0800 Message-ID: <20230824144403.2135739-5-chengming.zhou@linux.dev> In-Reply-To: <20230824144403.2135739-1-chengming.zhou@linux.dev> References: <20230824144403.2135739-1-chengming.zhou@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Chengming Zhou Now we update driver tags request table in blk_mq_get_driver_tag(), so the driver that support queue_rqs() have to update that inflight table by itself. Move it to blk_mq_start_request(), which is a better place where we setup the deadline for request timeout check. And it's just where the request becomes inflight. Signed-off-by: Chengming Zhou --- block/blk-mq.c | 1 + block/blk-mq.h | 3 --- drivers/block/virtio_blk.c | 2 -- drivers/nvme/host/pci.c | 1 - 4 files changed, 1 insertion(+), 6 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 44595385b34c..ff1b0f3ab3a8 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1259,6 +1259,7 @@ void blk_mq_start_request(struct request *rq) blk_add_timer(rq); WRITE_ONCE(rq->state, MQ_RQ_IN_FLIGHT); + rq->mq_hctx->tags->rqs[rq->tag] = rq; #ifdef CONFIG_BLK_DEV_INTEGRITY if (blk_integrity_rq(rq) && req_op(rq) == REQ_OP_WRITE) diff --git a/block/blk-mq.h b/block/blk-mq.h index 560a76df290a..f75a9ecfebde 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -351,12 +351,9 @@ bool __blk_mq_alloc_driver_tag(struct request *rq); static inline bool blk_mq_get_driver_tag(struct request *rq) { - struct blk_mq_hw_ctx *hctx = rq->mq_hctx; - if (rq->tag == BLK_MQ_NO_TAG && !__blk_mq_alloc_driver_tag(rq)) return false; - hctx->tags->rqs[rq->tag] = rq; return true; } diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 1fe011676d07..4689ac2e0c0e 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -470,8 +470,6 @@ static bool virtblk_prep_rq_batch(struct request *req) struct virtio_blk *vblk = req->mq_hctx->queue->queuedata; struct virtblk_req *vbr = blk_mq_rq_to_pdu(req); - req->mq_hctx->tags->rqs[req->tag] = req; - return virtblk_prep_rq(req->mq_hctx, vblk, req, vbr) == BLK_STS_OK; } diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 2f57da12d983..c2e942808eff 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -924,7 +924,6 @@ static bool nvme_prep_rq_batch(struct nvme_queue *nvmeq, struct request *req) if (unlikely(!nvme_check_ready(&nvmeq->dev->ctrl, req, true))) return false; - req->mq_hctx->tags->rqs[req->tag] = req; return nvme_prep_rq(nvmeq->dev, req) == BLK_STS_OK; }