From patchwork Tue Jun 11 05:19:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 804073 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA1CA171E70; Tue, 11 Jun 2024 05:21:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718083270; cv=none; b=ATOUkks0L2aKSwBwWdDFKMmCHX/Ay3d0aqpG3SWvkKNLWNVO8uT3Nm1PVLKRKhSTbRjCaxxSldJwa607pfGUXGLMYRjNf7kgys86t4dzVWWYsdOeSV27X57fDPrUsyu+kYpH5OoXFzjF63ggBRNy66zBT39FSSwz98o6qN6mRaA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718083270; c=relaxed/simple; bh=vNCnNvRZlLsPELdJZeAc0ZHhWP1ki0gZ6Y5zjLgiHSo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cJcKpIefmqPhwtuh7NtVRpViO60xq1P5xKQsKm3p5vQZTy86/3z03YI9fSn4yjbd+VpsD4BzqGXv+zjQb8gk2cBoNTBIOpYjrgHCuk5Jj3H3WARDd6eqv3rdK1xB0ryv8PV9yW/vQehOoogOFpiPpuk10/OZPA4yaFfuyLvq1tY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=GCSo6txV; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GCSo6txV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=29U87g0UHkeYya05OUe00vczhbUtZ3UGETb+Z6Ht4RY=; b=GCSo6txVa5cYxZtp+tehNyFXpj 7a0UzoIrHi3enEZSKL7o3EsXwmQZvVmrhYIFbumaGvp0YEB55dp84N66m+2E/5oDp+RoJV3Z0Z3b7 7sx/ZtrwG9PDjeKwz7QEiP8S1yrPfa3GfzN7CBiLaPYwc2xvGnc/gPxGtFfKj6+v9f8sceyyWiH85 oMRjZuDPcDqHsADK3eb89Cn6DY7/k1rjiwqjTFXlxGLpvfV7YRNk3O0R8k4nZVa9gpk8S4FDTe9us laMjQuuhp3M/5BexMgm9l2Var8w7BGjDv7Z5eRI3ogIypg2iVUumTp9GXdvQNtvL0MNNMEpr4RKMh lkoGGvyQ==; Received: from 2a02-8389-2341-5b80-cdb4-8e7d-405d-6b77.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:cdb4:8e7d:405d:6b77] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sGtw7-00000007Riw-3tq0; Tue, 11 Jun 2024 05:20:48 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Geert Uytterhoeven , Richard Weinberger , Philipp Reisner , Lars Ellenberg , =?utf-8?q?Christoph_B=C3=B6hmwa?= =?utf-8?q?lder?= , Josef Bacik , Ming Lei , "Michael S. Tsirkin" , Jason Wang , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Vineeth Vijayan , "Martin K. Petersen" , linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org Subject: [PATCH 25/26] block: move the skip_tagset_quiesce flag to queue_limits Date: Tue, 11 Jun 2024 07:19:25 +0200 Message-ID: <20240611051929.513387-26-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240611051929.513387-1-hch@lst.de> References: <20240611051929.513387-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Move the skip_tagset_quiesce flag into the queue_limits feature field so that it can be set atomically and all I/O is frozen when changing the flag. Signed-off-by: Christoph Hellwig --- block/blk-mq-debugfs.c | 1 - drivers/nvme/host/core.c | 8 +++++--- include/linux/blkdev.h | 6 ++++-- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 8b5a68861c119b..344f9e503bdb32 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -93,7 +93,6 @@ static const char *const blk_queue_flag_name[] = { QUEUE_FLAG_NAME(RQ_ALLOC_TIME), QUEUE_FLAG_NAME(HCTX_ACTIVE), QUEUE_FLAG_NAME(SQ_SCHED), - QUEUE_FLAG_NAME(SKIP_TAGSET_QUIESCE), }; #undef QUEUE_FLAG_NAME diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 31e752e8d632cd..bf410d10b12006 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -4489,13 +4489,15 @@ int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set, return ret; if (ctrl->ops->flags & NVME_F_FABRICS) { - ctrl->connect_q = blk_mq_alloc_queue(set, NULL, NULL); + struct queue_limits lim = { + .features = BLK_FEAT_SKIP_TAGSET_QUIESCE, + }; + + ctrl->connect_q = blk_mq_alloc_queue(set, &lim, NULL); if (IS_ERR(ctrl->connect_q)) { ret = PTR_ERR(ctrl->connect_q); goto out_free_tag_set; } - blk_queue_flag_set(QUEUE_FLAG_SKIP_TAGSET_QUIESCE, - ctrl->connect_q); } ctrl->tagset = set; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index cc4f6e64e8e3f5..d7ad25def6e50b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -322,6 +322,9 @@ enum { /* supports PCI(e) p2p requests */ BLK_FEAT_PCI_P2PDMA = (1u << 12), + + /* skip this queue in blk_mq_(un)quiesce_tagset */ + BLK_FEAT_SKIP_TAGSET_QUIESCE = (1u << 13), }; /* @@ -594,7 +597,6 @@ struct request_queue { #define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */ #define QUEUE_FLAG_HCTX_ACTIVE 28 /* at least one blk-mq hctx is active */ #define QUEUE_FLAG_SQ_SCHED 30 /* single queue style io dispatch */ -#define QUEUE_FLAG_SKIP_TAGSET_QUIESCE 31 /* quiesce_tagset skip the queue*/ #define QUEUE_FLAG_MQ_DEFAULT (1UL << QUEUE_FLAG_SAME_COMP) @@ -629,7 +631,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_registered(q) test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags) #define blk_queue_sq_sched(q) test_bit(QUEUE_FLAG_SQ_SCHED, &(q)->queue_flags) #define blk_queue_skip_tagset_quiesce(q) \ - test_bit(QUEUE_FLAG_SKIP_TAGSET_QUIESCE, &(q)->queue_flags) + ((q)->limits.features & BLK_FEAT_SKIP_TAGSET_QUIESCE) extern void blk_set_pm_only(struct request_queue *q); extern void blk_clear_pm_only(struct request_queue *q);