From patchwork Tue Oct 19 02:41:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 12568505 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B847C433F5 for ; Tue, 19 Oct 2021 02:29:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DDF76138B for ; Tue, 19 Oct 2021 02:29:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232021AbhJSCbV (ORCPT ); Mon, 18 Oct 2021 22:31:21 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:25230 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231627AbhJSCbS (ORCPT ); Mon, 18 Oct 2021 22:31:18 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4HYHhk57vhz8tlt; Tue, 19 Oct 2021 10:27:50 +0800 (CST) Received: from dggema762-chm.china.huawei.com (10.1.198.204) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.15; Tue, 19 Oct 2021 10:28:56 +0800 Received: from huawei.com (10.175.127.227) by dggema762-chm.china.huawei.com (10.1.198.204) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.15; Tue, 19 Oct 2021 10:28:56 +0800 From: Yu Kuai To: , , , , CC: , , , , Subject: [PATCH v3 -next 0/2] blk-cgroup: synchoronize blkg creation against policy deactivation Date: Tue, 19 Oct 2021 10:41:30 +0800 Message-ID: <20211019024132.432458-1-yukuai3@huawei.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggema762-chm.china.huawei.com (10.1.198.204) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Changes in V3: - grab q_usage_counter in blkg_conf_prep() instead of introducing a new mutex. Changes in V2: - rename the patch title - instead of checking policy in blkg_create(), using a new solution. Yu Kuai (2): blk-cgroup: don't call blk_mq_freeze_queue() in blkcg_deactivate_policy() blk-cgroup: synchoronize blkg creation against policy deactivation block/blk-cgroup.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)