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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 00BEBC4360F for ; Tue, 2 Apr 2019 18:07:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D41522070B for ; Tue, 2 Apr 2019 18:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729317AbfDBSHS (ORCPT ); Tue, 2 Apr 2019 14:07:18 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:34689 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725889AbfDBSHR (ORCPT ); Tue, 2 Apr 2019 14:07:17 -0400 Received: by mail-pf1-f195.google.com with SMTP id b3so6773229pfd.1; Tue, 02 Apr 2019 11:07:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=RhwuA5N/5e6H1WDwCI44CeLX6VSkzofI8H9pzxU7LZc=; b=TivN2aofY1EGjQgaPpm1OHH6yukPlN8vX4bdSEAFTjx+I6bPVeJqJ8lWH0cNXMzj5R YiXkfM04xXqeHslAO/bFbraPHta/rBga1Lq9UL0z2D7jR8RNNZ8yCFxEy5FYPtiparNo 7zFLVNxVbA5Ac6ifPUbiI+uY2qF0phEz4dKbsj8VOs8nAaCU4wpaASUXpE74GFzMXbga vQHR1bWooL9N3KmHUsngBma1Oi3xGU3fJOEHrHeofuw3cqnHUxic4WoV71q3gcJdfECU sWWcHFMoHQhGkARU/xog4cDoM36MWuvhZKOOwW37uBv/MKskZwQv7zLAAnqDRDYvpo6n xU1g== X-Gm-Message-State: APjAAAXcDsdOFdFrSLId4kB0aYDcOS9Rxnr/yCAb4Jo2dHSMZlKrkPPJ GRxS/giWiADk+fvM/GaqW/A= X-Google-Smtp-Source: APXvYqyPVGAoebpALI4iE6lLgYN+hMeU0hDHJL/Dft1ullZ+TbvnP7EIhUIZGV2t/FCD1yluvl0fdg== X-Received: by 2002:a63:4e64:: with SMTP id o36mr66623230pgl.213.1554228437120; Tue, 02 Apr 2019 11:07:17 -0700 (PDT) Received: from ?IPv6:2620:15c:2cd:203:5cdc:422c:7b28:ebb5? ([2620:15c:2cd:203:5cdc:422c:7b28:ebb5]) by smtp.gmail.com with ESMTPSA id f5sm7651348pgo.75.2019.04.02.11.07.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 02 Apr 2019 11:07:16 -0700 (PDT) Message-ID: <1554228435.118779.163.camel@acm.org> Subject: Re: [PATCH 0/5] blk-mq: allow to run queue if queue refcount is held From: Bart Van Assche To: "jianchao.wang" , Ming Lei Cc: Jens Axboe , linux-block@vger.kernel.org, James Smart , Bart Van Assche , linux-scsi@vger.kernel.org, "Martin K . Petersen" , Christoph Hellwig , "James E . J . Bottomley" Date: Tue, 02 Apr 2019 11:07:15 -0700 In-Reply-To: References: <20190331030954.22320-1-ming.lei@redhat.com> <10c8ed10-3c96-b73c-18d8-114773b1d675@acm.org> <20190401020036.GB30776@ming.t460p> Content-Type: text/plain; charset="UTF-7" X-Mailer: Evolution 3.26.2-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Mon, 2019-04-01 at 10:44 +-0800, jianchao.wang wrote: +AD4 percpu+AF8-ref+AF8-tryget would be better to get pending requests to be issued when queue is frozen. Agreed. Thanks, Bart.