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 97260C433EF for ; Mon, 10 Jan 2022 13:37:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232695AbiAJNhX (ORCPT ); Mon, 10 Jan 2022 08:37:23 -0500 Received: from szxga01-in.huawei.com ([45.249.212.187]:34893 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232919AbiAJNgt (ORCPT ); Mon, 10 Jan 2022 08:36:49 -0500 Received: from kwepemi100006.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4JXZbY2W4vzccTZ; Mon, 10 Jan 2022 21:36:09 +0800 (CST) Received: from kwepemm600009.china.huawei.com (7.193.23.164) by kwepemi100006.china.huawei.com (7.221.188.165) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Mon, 10 Jan 2022 21:36:47 +0800 Received: from huawei.com (10.175.127.227) 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 15.1.2308.20; Mon, 10 Jan 2022 21:36:46 +0800 From: Yu Kuai To: , , , CC: , , , , Subject: [PATCH v6 0/2] cancel all throttled bios in del_gendisk() Date: Mon, 10 Jan 2022 21:47:56 +0800 Message-ID: <20220110134758.2233758-1-yukuai3@huawei.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm600009.china.huawei.com (7.193.23.164) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If del_gendisk() is done when some io are still throttled, such io will not be handled until the throttle is done, which is not necessary. Changes in v2: - move WARN_ON_ONCE() from throtl_rb_first() to it's caller - merge some patches into one. Changes in v3: - some code optimization in patch 1 - hold queue lock to cancel bios in patch 2 Changes in v4: - delete rcu_read_lock() and rcu_read_unlock() in patch 2 Changes in v5: - add comment about rcu lock Changes in v6: - revert to include rcu lock with some comments. Jagan Teki (1): ARM: dts: stm32: Enable LVDS panel on i.Core STM32MP1 EDIMM2.2 Yu Kuai (1): blk-throtl: move WARN_ON_ONCE() from throtl_rb_first() to it's caller Yu Kuai (2): blk-throtl: move WARN_ON_ONCE() from throtl_rb_first() to it's caller block: cancel all throttled bios in del_gendisk() block/blk-throttle.c | 82 ++++++++++++++++++++++++++++++++++++++++++-- block/blk-throttle.h | 2 ++ block/genhd.c | 2 ++ 3 files changed, 83 insertions(+), 3 deletions(-) -- 2.31.1