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 8E54BC7EE2E for ; Mon, 29 May 2023 13:24:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229786AbjE2NYW (ORCPT ); Mon, 29 May 2023 09:24:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbjE2NYU (ORCPT ); Mon, 29 May 2023 09:24:20 -0400 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1313CC4; Mon, 29 May 2023 06:24:19 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.153]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4QVGT93tDkz4f3v58; Mon, 29 May 2023 21:24:13 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAHvbB9p3RkWVPoKQ--.23397S4; Mon, 29 May 2023 21:24:14 +0800 (CST) From: Yu Kuai To: guoqing.jiang@linux.dev, agk@redhat.com, snitzer@kernel.org, dm-devel@redhat.com, song@kernel.org Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH -next v2 0/6] md: fix that MD_RECOVERY_RUNNING can be cleared while sync_thread is still running Date: Mon, 29 May 2023 21:20:31 +0800 Message-Id: <20230529132037.2124527-1-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: gCh0CgAHvbB9p3RkWVPoKQ--.23397S4 X-Coremail-Antispam: 1UD129KBjvdXoW7Gw1rAw43JrW7Zr4kur4fGrg_yoWfurX_Xa 43XFy3Gr47WF15JFyDKr1jv3yDGF45ur1DXFyFqayjyr17WrnrCr1Duw1a9w1Yva42yF18 ArWUCrWxurs7WjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbIxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628v n2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F4 0E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFyl IxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxV AFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWrJr0_WFyUJwCI42IY6I8E87Iv67AK xVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa 7VU1a9aPUUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yu Kuai Changes in v2: - rebase for the latest md-next Patch 1 revert the commit because it will cause MD_RECOVERY_RUNNING to be cleared while sync_thread is still running. The deadlock this patch tries to fix will be fixed by patch 2-5. Patch 6 enhance checking to prevent MD_RECOVERY_RUNNING to be cleared while sync_thread is still running. Yu Kuai (6): Revert "md: unlock mddev before reap sync_thread in action_store" md: refactor action_store() for 'idle' and 'frozen' md: add a mutex to synchronize idle and frozen in action_store() md: refactor idle/frozen_sync_thread() to fix deadlock md: wake up 'resync_wait' at last in md_reap_sync_thread() md: enhance checking in md_check_recovery() drivers/md/dm-raid.c | 1 - drivers/md/md.c | 124 +++++++++++++++++++++++++++++-------------- drivers/md/md.h | 5 ++ 3 files changed, 88 insertions(+), 42 deletions(-) -- 2.39.2