From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 500EAC4363D for ; Wed, 7 Oct 2020 01:07:09 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E310E20760 for ; Wed, 7 Oct 2020 01:07:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lbp3Vptx"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="CqNg2jW1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E310E20760 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=qBFQtaS5e3nAp7KRRIscifcBSCBP7zghjQV2ddDOvwg=; b=lbp3VptxmrPbUAR9p76cOIa5rK 0QYBQljc8IoG5YAMG1YfZyW2SNNvPvGoupGw8FNI+V8vUBvVGqqFnFmgczkS/fRVPPKRHvK3l3GbI E8wRqN5qsnwHsF1MXftJVHtOK6cXSSalNVEoGWH5tsPL25+qy8g4alVj7DqD9MxKqVaBwX3hw4HEu oMIJvq1YiBPttLvcq+a0dSA1x9pZn2LU4rzGOGtReR9PIwO/yHzKRWKljN6Pkp/NwiX46zX2DnEsw MSAovIUyGJuLN8i5n0C7vDm6eU5z9HiOBSxrh8RsFsWxJRD/FUfUlvZVw3ducoXJrXFXJP3nYI/di AIkaTbGA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kPxv8-0005iJ-0j; Wed, 07 Oct 2020 01:07:06 +0000 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kPxv5-0005hL-Fx for linux-nvme@lists.infradead.org; Wed, 07 Oct 2020 01:07:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602032823; 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; bh=RLiZ9gLZbkl9AWDrkT72DWvj86qtm9c61Et1HUVAglI=; b=CqNg2jW1wSCOvsYhi1sFeQ/7wSzOeeeb0DWZDdds1uga9aRzi11sNptpWv/CopIqkPnJS2 hGI9YNZzQTHtTY42ubtUzSZlFbPb22GvzG/Cr6PJQ8mGQ/GSdcVWDeAG+MtvQZgiNsausn 3ueJ5QRZjnTT6mWaBpF9Tgt/4cFBwLg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-379-SInF7xUQN5emSD5gWYjDIQ-1; Tue, 06 Oct 2020 21:04:54 -0400 X-MC-Unique: SInF7xUQN5emSD5gWYjDIQ-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id E45CF803F6A; Wed, 7 Oct 2020 01:04:52 +0000 (UTC) Received: from localhost (ovpn-12-47.pek2.redhat.com [10.72.12.47]) by smtp.corp.redhat.com (Postfix) with ESMTP id B83045C1BD; Wed, 7 Oct 2020 01:04:47 +0000 (UTC) From: Ming Lei To: Jens Axboe , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch Subject: [PATCH V7 0/4] blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING Date: Wed, 7 Oct 2020 09:04:39 +0800 Message-Id: <20201007010443.71456-1-ming.lei@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201006_210703_757990_8EFCEE28 X-CRM114-Status: GOOD ( 14.00 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagi Grimberg , Johannes Thumshirn , Ming Lei , Hannes Reinecke , Chao Leng , Bart Van Assche Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hi Jens, The 1st patch add .mq_quiesce_mutex for serializing quiesce/unquiesce, and prepares for replacing srcu with percpu_ref. The 2nd patch replaces srcu with percpu_ref. The 3rd patch adds tagset quiesce interface. The 4th patch applies tagset quiesce interface for NVMe subsystem. V7: - base on latest for-5.10/block, only there is small change on 2/4 V6: - base on for-5.10/block directly, instead of being against on patchset of 'percpu_ref & block: reduce memory footprint of percpu_ref in fast path', because these patches don't depend on that patchset. V5: - warn once in case that driver unquiesces its queue being quiesce and not done, only patch 2 is modified V4: - remove .mq_quiesce_mutex, and switch to test_and_[set|clear] for avoiding duplicated quiesce action - pass blktests(block, nvme) V3: - add tagset quiesce interface - apply tagset quiesce interface for NVMe - pass blktests(block, nvme) V2: - add .mq_quiesce_lock - add comment on patch 2 wrt. handling hctx_lock() failure - trivial patch style change Ming Lei (3): block: use test_and_{clear|test}_bit to set/clear QUEUE_FLAG_QUIESCED blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING blk-mq: add tagset quiesce interface Sagi Grimberg (1): nvme: use blk_mq_[un]quiesce_tagset block/blk-core.c | 13 +++ block/blk-mq-sysfs.c | 2 - block/blk-mq.c | 182 +++++++++++++++++++++++++-------------- block/blk-sysfs.c | 6 +- block/blk.h | 2 + drivers/nvme/host/core.c | 19 ++-- include/linux/blk-mq.h | 10 +-- include/linux/blkdev.h | 4 + 8 files changed, 154 insertions(+), 84 deletions(-) Cc: Hannes Reinecke Cc: Sagi Grimberg Cc: Bart Van Assche Cc: Johannes Thumshirn Cc: Chao Leng -- 2.25.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme