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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16373C433EF for ; Sat, 19 Mar 2022 02:35:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234741AbiCSCgU (ORCPT ); Fri, 18 Mar 2022 22:36:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230294AbiCSCgT (ORCPT ); Fri, 18 Mar 2022 22:36:19 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7BFB2BB7CD; Fri, 18 Mar 2022 19:34:56 -0700 (PDT) Received: from kwepemi100021.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KL4gT15LCzfYqy; Sat, 19 Mar 2022 10:33:25 +0800 (CST) Received: from kwepemm600009.china.huawei.com (7.193.23.164) by kwepemi100021.china.huawei.com (7.221.188.223) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 19 Mar 2022 10:34:54 +0800 Received: from [10.174.176.73] (10.174.176.73) by kwepemm600009.china.huawei.com (7.193.23.164) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Sat, 19 Mar 2022 10:34:54 +0800 Subject: Re: [PATCH -next 00/11] support concurrent sync io for bfq on a specail occasion To: Paolo Valente CC: Tejun Heo , Jens Axboe , Jan Kara , , linux-block , LKML , References: <20220305091205.4188398-1-yukuai3@huawei.com> <11fda851-a552-97ea-d083-d0288c17ba53@huawei.com> <1AE1457D-AAE1-4A13-8593-451E9396028A@linaro.org> From: "yukuai (C)" Message-ID: <3325eb4b-5513-694f-df59-364cb1c86eb5@huawei.com> Date: Sat, 19 Mar 2022 10:34:53 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <1AE1457D-AAE1-4A13-8593-451E9396028A@linaro.org> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.176.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600009.china.huawei.com (7.193.23.164) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org 在 2022/03/18 20:38, Paolo Valente 写道: > Hi, > could you please add pointers to the thread(s) where we have already revised this series (if we have). I don't see any reference to that in this cover letter. Hi, Ok, sorry for that, following is the previours threads. This is a new patchset after RFC - Fix some term in commit messages and comments - Add some cleanup patches New RFC: use a new solution, and it has little relevance to previous versions. https://lore.kernel.org/lkml/20211127101132.486806-1-yukuai3@huawei.com/T/ - as suggested by Paolo, count root group into 'num_groups_with_pending_reqs' instead of handling root group separately. - Change the patchset title - New changes about when to modify 'num_groups_with_pending_reqs' Orignal v4: https://lore.kernel.org/lkml/20211014014556.3597008-2-yukuai3@huawei.com/t/ - fix a compile warning when CONFIG_BLK_CGROUP is not enabled. Orignal v3: https://www.spinics.net/lists/linux-block/msg74836.html - Instead of tracking each queue in root group, tracking root group directly just like non-root group does. - remove patch 3,4 from these series. Orignal v2: https://lore.kernel.org/lkml/20210806020826.1407257-1-yukuai3@huawei.com/ - as suggested by Paolo, add support to track if root_group have any pending requests, and use that to handle the situation when only one group is activated while root group doesn't have any pending requests. - modify commit message in patch 2