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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 E98CDC48BCF for ; Wed, 9 Jun 2021 20:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B380261182 for ; Wed, 9 Jun 2021 20:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229504AbhFIUIB (ORCPT ); Wed, 9 Jun 2021 16:08:01 -0400 Received: from mail-pj1-f54.google.com ([209.85.216.54]:38516 "EHLO mail-pj1-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229472AbhFIUIA (ORCPT ); Wed, 9 Jun 2021 16:08:00 -0400 Received: by mail-pj1-f54.google.com with SMTP id m13-20020a17090b068db02901656cc93a75so2224688pjz.3 for ; Wed, 09 Jun 2021 13:05:50 -0700 (PDT) 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=BoksenSgpnEXamcDKniBQYmLkYCIbZxuXXBSGNDVLlw=; b=X8DjZ/CMxv4LhLuufNxXAB/Sh/M11AdJkhseNRK9hnFw2clsP/JNANVL0JAqvdm2TS lor0HjlanSjW42evvLNTciLNVo4TkvWVN0t1jWdn66PQL4GsBNhSVWlf4baj8MfywYui LXDnCil1vC1X+uBYFA8WDqyYuhz3i4uWNgxVoqy1cW+M04vyu8xoDuNH0M7iLDKpfn49 uKS9rkHc0fDGTTHMmi2pgdRHhovzon+uzEWfNOEugcFaQzlA9ET+qYL70j8ktoFB+5kH QgO+WrtSibeA13M6MU/Tet4++i0k5iavHxEKzq5/9//77OMW19uWEThD+8H9UkBHne79 ijhA== X-Gm-Message-State: AOAM533+Rb2v3b7MONONSwEoBBFYb/eHq5b0cxU67VtfJ/YbYzVROxC7 DAGC7uQPyYu+FUt79cCjeNI= X-Google-Smtp-Source: ABdhPJy3BCVzRcAD5VV/pHo9H6wprpjfx3eN5Eo51cHSS4Yo4HvRSywxoE4u/WS+5v72kFwO+ppiww== X-Received: by 2002:a17:90b:1b44:: with SMTP id nv4mr9007680pjb.223.1623269150214; Wed, 09 Jun 2021 13:05:50 -0700 (PDT) Received: from [192.168.3.217] (c-73-241-217-19.hsd1.ca.comcast.net. [73.241.217.19]) by smtp.gmail.com with ESMTPSA id pi8sm414534pjb.52.2021.06.09.13.05.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jun 2021 13:05:49 -0700 (PDT) Subject: Re: [PATCH V3 1/2] block: fix race between adding/removing rq qos and normal IO To: Ming Lei , Jens Axboe , Christoph Hellwig Cc: linux-block@vger.kernel.org, Yi Zhang References: <20210609015822.103433-1-ming.lei@redhat.com> <20210609015822.103433-2-ming.lei@redhat.com> From: Bart Van Assche Message-ID: Date: Wed, 9 Jun 2021 13:05:48 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210609015822.103433-2-ming.lei@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 6/8/21 6:58 PM, Ming Lei wrote: > Yi reported several kernel panics on [ ... ] Reviewed-by: Bart Van Assche