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=-5.4 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 B767AC2D0E4 for ; Mon, 14 Sep 2020 02:09:02 +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 33BF62168B for ; Mon, 14 Sep 2020 02:09:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DBKxfxbS"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="NCTwfvFi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 33BF62168B 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=3Do4fWof317DD+LSOIs6jCXNR7so2UjpOe+xJbXUE04=; b=DBKxfxbSIWopyE06neHFlNgdvg gZYZdCDcxTP8Uay03CsCpcfzqsff6qewVTjIyVA50mUiWYhRDhjJYQ7jc/37dzl9dKu1qgdFquwXB uHPcUqtvPdgL8YC5JDDCj+4Wphmh+U1VOJVRjXN9g68b+n2th5lUkkNwTo0mBUu2YGzooKy6E8lvz jtkiBOS17NMsn8WEWOCjBnN/GdOVtW/jCe/gkI99xN7FrpI8hme1eTteeAeS2RatqN3nG/ZiGYmU2 Hhk/DsoQRFMBRTZ0Cr57wAQzSb9xGn+HkUQ8v0ALs6viKDSwhAQebVkki5Hs9TVhwmeLvKLdjASKV THnu5hHw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHdvL-0006y0-PF; Mon, 14 Sep 2020 02:08:55 +0000 Received: from us-smtp-1.mimecast.com ([207.211.31.81] helo=us-smtp-delivery-1.mimecast.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHdvH-0006x8-EO for linux-nvme@lists.infradead.org; Mon, 14 Sep 2020 02:08:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600049329; 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=NtOlulbKFTK9JonRL8oELSnBW6UyODni1m5uQCkqvZI=; b=NCTwfvFikK0r3ZP1hIWwwG7mIhTvv2FncN5RXEGYYQQltwj/syHemmQxLNmOt8CMvBAjfS lALvfdFXNWS66H04RvG+H6MLkAArHRmeDvtrh1yrfuaab47/qWRhbenlgMykqtbXRVB8fJ gMltUaKHfoSV213EUhL802I7UnTU5QQ= 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-211-wIIG7ZKuNYuf8Y72qMCxNg-1; Sun, 13 Sep 2020 22:08:45 -0400 X-MC-Unique: wIIG7ZKuNYuf8Y72qMCxNg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C3B721005E62; Mon, 14 Sep 2020 02:08:42 +0000 (UTC) Received: from localhost (ovpn-12-38.pek2.redhat.com [10.72.12.38]) by smtp.corp.redhat.com (Postfix) with ESMTP id 61F5560CD0; Mon, 14 Sep 2020 02:08:37 +0000 (UTC) From: Ming Lei To: Jens Axboe , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch Subject: [PATCH V6 0/4] blk-mq: implement queue quiesce via percpu_ref for BLK_MQ_F_BLOCKING Date: Mon, 14 Sep 2020 10:08:23 +0800 Message-Id: <20200914020827.337615-1-ming.lei@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200913_220851_683995_FC623D59 X-CRM114-Status: GOOD ( 14.47 ) 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. 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