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 X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 AF66CC43331 for ; Tue, 31 Mar 2020 00:58:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 88F2B20774 for ; Tue, 31 Mar 2020 00:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729595AbgCaA6L (ORCPT ); Mon, 30 Mar 2020 20:58:11 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:58568 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729019AbgCaA6L (ORCPT ); Mon, 30 Mar 2020 20:58:11 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 2A4576F7089CB59F789B; Tue, 31 Mar 2020 08:58:06 +0800 (CST) Received: from [10.134.22.195] (10.134.22.195) by smtp.huawei.com (10.3.19.205) with Microsoft SMTP Server (TLS) id 14.3.487.0; Tue, 31 Mar 2020 08:58:05 +0800 Subject: Re: [PATCH] f2fs: prevent meta updates while checkpoint is in progress To: Sahitya Tummala , Jaegeuk Kim , CC: References: <1585219019-24831-1-git-send-email-stummala@codeaurora.org> From: Chao Yu Message-ID: <8e8c3fea-9471-ffd0-3817-06b31bc4289d@huawei.com> Date: Tue, 31 Mar 2020 08:58:04 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <1585219019-24831-1-git-send-email-stummala@codeaurora.org> Content-Type: text/plain; charset="windows-1252" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.134.22.195] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/3/26 18:36, Sahitya Tummala wrote: > allocate_segment_for_resize() can cause metapage updates if > it requires to change the current node/data segments for resizing. > Stop these meta updates when there is a checkpoint already > in progress to prevent inconsistent CP data. > > Signed-off-by: Sahitya Tummala Reviewed-by: Chao Yu Thanks,