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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 57733C2BBCA for ; Wed, 16 Dec 2020 15:48:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0662422B40 for ; Wed, 16 Dec 2020 15:48:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726571AbgLPPsg (ORCPT ); Wed, 16 Dec 2020 10:48:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726490AbgLPPsg (ORCPT ); Wed, 16 Dec 2020 10:48:36 -0500 Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E184C06179C for ; Wed, 16 Dec 2020 07:47:55 -0800 (PST) Received: by mail-io1-xd29.google.com with SMTP id w18so10520415iot.0 for ; Wed, 16 Dec 2020 07:47:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dsUdMt3elLnLhHpjUMmHSgKb+jK8/Q+XkCcYb65d6H8=; b=a8xk4VHLbgY/7YE6M65uEnOLeFyG51dM1svLyeiQa03r90JVHp/sqG8zxiSW2xr+jj VS0HoFwJl9YrbUcXiIGWXyaW7nb1CMarpOhhiHv6p42J1WLHYb9yxA7X46KWhSBlY25W +851g4fafLZS8U7PqZLOUUNoHFhci0jt2gZMfvWiDbUG9AbRzUchxo5LBejw9AjIMNb0 LikQ/MyYy4eRic/LRbx7gGPqtmX33BMdO2DqXl4wSHDbRZ00yes5C69kQ0gaY+j23KR+ /FWZhuuD+ThiryH+Ull3tW8XC565HQIoHif1EzJX3HYeina0iszQlh92suDQ6Th2K3mY PtAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=dsUdMt3elLnLhHpjUMmHSgKb+jK8/Q+XkCcYb65d6H8=; b=IFaPKQdVIAUt/UB9KePnZ7GzKdrJTvSfkELpZj1IkJcr+U0vrhNkrXya4ogsePo2Ic m9XowO62GeiWpPZIVnizWX7Mcm52yLbKEC5yfPYaONkfIGyXoV39joNume90n8kzwZ1b 0rM+6CClrFYZnHfdYzBd3NjtyQUxW0kIT+ec10fH7Cy34rfYgc5w73MbH/+jDVlNpDze ZSW7Nbd3v/4aj9ijRHaqVUJx+bGT8F7bPdaEW1MWxF5PhmGN4Rro5GklWauIN9TOW+S7 Au1WOcAqD/1z9tf7dFPQnOGGCyqAHdpzBndQLgZTgdzLeHMKNPIkdfyQm/7kQSLVD/Gp 98vQ== X-Gm-Message-State: AOAM533z5HH0hWJHdPmEs9PHs/UUM7TWhSBX7xQB/WDNX2inwUq/GEnT MEz0QX2AJsiXkdMeLesrdNoORQ== X-Google-Smtp-Source: ABdhPJwxGQ7xFQdW/UJttZzPjXJn5YuaIjYFK48rzhEyhZICoqU1gykblinNwbreDVZ++HEW18syMg== X-Received: by 2002:a05:6638:2a5:: with SMTP id d5mr43495814jaq.92.1608133674293; Wed, 16 Dec 2020 07:47:54 -0800 (PST) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id v22sm1489979ila.84.2020.12.16.07.47.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Dec 2020 07:47:53 -0800 (PST) Subject: Re: [PATCH v2] blk-mq: Remove 'running from the wrong CPU' warning To: Daniel Wagner , linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Ming Lei References: <20201130101921.52754-1-dwagner@suse.de> From: Jens Axboe Message-ID: <65f4cd1b-d629-7bf3-36c9-e503efb53c97@kernel.dk> Date: Wed, 16 Dec 2020 08:47:53 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201130101921.52754-1-dwagner@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/30/20 3:19 AM, Daniel Wagner wrote: > It's guaranteed that no request is in flight when a hctx is going > offline. This warning is only triggered when the wq's CPU is hot > plugged and the blk-mq is not synced up yet. > > As this state is temporary and the request is still processed > correctly, better remove the warning as this is the fast path. Applied, thanks. -- Jens Axboe