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 495BCC433EF for ; Fri, 11 Mar 2022 07:25:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346528AbiCKH0f (ORCPT ); Fri, 11 Mar 2022 02:26:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240189AbiCKH0e (ORCPT ); Fri, 11 Mar 2022 02:26:34 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C10CB1B6E1A for ; Thu, 10 Mar 2022 23:25:31 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 6A987B82AD2 for ; Fri, 11 Mar 2022 07:25:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B5C8C340E9; Fri, 11 Mar 2022 07:25:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646983529; bh=g84WdhT8WlUiVZ4Pe91HKYziG64yo/SO8s//Xpd2fk0=; h=Date:Subject:To:References:From:In-Reply-To:From; b=RYbR6QstwFDm4TM9v8bCHTbEje2eF314IM+w4i62zCcjy5CbFYtxmMOKpJl1xESrz 1BCXHnRkodtI0iUZHM1Id/Byrwtcth5mck8sVVve34jt7pFw08XUoAwxdlRGG/xbZs bGgog83ItM1AGidvcly4RQhLWGsbx5S5WBDhGI8gTjLDYk4BnFir5Tq35/MNVNkeCB MZKdaibOGRjUtHJ23sJKNEOyFufuv+omYan+GeYH1vI8J+HpgUmVsHy3lwtcYSGyly XlKLxpYMmGv0fIXnXZ6OMuI4YvbBOwMIkd3EwnqMZLMsMZ1cY1GJ0qdxBsBliotM5X x1JAFcmvQVRsg== Message-ID: <86d59c1d-b453-5ee2-4737-b4dd03829965@kernel.org> Date: Fri, 11 Mar 2022 15:25:25 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.6.2 Subject: Re: [f2fs-dev] [PATCH 1/2 v2] f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs Content-Language: en-US To: Jaegeuk Kim , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net References: <20220309214834.3408741-1-jaegeuk@kernel.org> From: Chao Yu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2022/3/11 13:22, Jaegeuk Kim wrote: > Let's purge inode cache in order to avoid the below deadlock. > > [freeze test] shrinkder > freeze_super > - pwercpu_down_write(SB_FREEZE_FS) > - super_cache_scan > - down_read(&sb->s_umount) > - prune_icache_sb > - dispose_list > - evict > - f2fs_evict_inode > thaw_super > - down_write(&sb->s_umount); > - __percpu_down_read(SB_FREEZE_FS) > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,