From patchwork Mon Mar 1 16:14:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 389322 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47C75C433DB for ; Mon, 1 Mar 2021 19:51:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15D6764D8F for ; Mon, 1 Mar 2021 19:51:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242051AbhCATuj (ORCPT ); Mon, 1 Mar 2021 14:50:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:53030 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241586AbhCATlU (ORCPT ); Mon, 1 Mar 2021 14:41:20 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1CCD765093; Mon, 1 Mar 2021 17:32:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614619930; bh=xwrO+w3ZIPjWd2FnVLrp7D7sadqK46TWOatqAUOY0VM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u0sM7E7CygHpzZa1tvpu2QPZBpFpNcNBfUQKoqkzXOX8sSNO6yEW2IXmVxPbKTZ4z eAMXgX/7bnsgr/uHCCGFwfqVzxIsnYVQCidOqjZjwz0sAxEzmNc6MGjA/bAR+kytop pfNwL3ll3kkUTcs8RKZ1xAO8csR5WM8+UIzTwl90= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chao Yu , Jaegeuk Kim Subject: [PATCH 5.10 633/663] f2fs: flush data when enabling checkpoint back Date: Mon, 1 Mar 2021 17:14:41 +0100 Message-Id: <20210301161213.174386108@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161141.760350206@linuxfoundation.org> References: <20210301161141.760350206@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jaegeuk Kim commit b0ff4fe746fd028eef920ddc8c7b0361c1ede6ec upstream. During checkpoint=disable period, f2fs bypasses all the synchronous IOs such as sync and fsync. So, when enabling it back, we must flush all of them in order to keep the data persistent. Otherwise, suddern power-cut right after enabling checkpoint will cause data loss. Fixes: 4354994f097d ("f2fs: checkpoint disabling") Cc: stable@vger.kernel.org Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/super.c | 3 +++ 1 file changed, 3 insertions(+) --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1764,6 +1764,9 @@ restore_flag: static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) { + /* we should flush all the data to keep data consistency */ + sync_inodes_sb(sbi->sb); + down_write(&sbi->gc_lock); f2fs_dirty_to_prefree(sbi);