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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 EFC54C4BA14 for ; Fri, 13 Dec 2019 20:39:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 30EB1246AF for ; Fri, 13 Dec 2019 20:39:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=toxicpanda-com.20150623.gappssmtp.com header.i=@toxicpanda-com.20150623.gappssmtp.com header.b="IGRJlwjd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728310AbfLMQZe (ORCPT ); Fri, 13 Dec 2019 11:25:34 -0500 Received: from mail-qv1-f68.google.com ([209.85.219.68]:34737 "EHLO mail-qv1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727958AbfLMQZd (ORCPT ); Fri, 13 Dec 2019 11:25:33 -0500 Received: by mail-qv1-f68.google.com with SMTP id o18so1055855qvf.1 for ; Fri, 13 Dec 2019 08:25:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=+tbtoQ7gZS65RurxvAssDUa7FuT8iyRBAIe3ZHERmgY=; b=IGRJlwjdhrIr4xZasTX8FCP3/tYlj36leE+szVNsO6cjP8imIMzpKAhlpWowukP0Wl ObYshxK2GFsmcYi7lS6PjJDs/B1hH1Ja0bkGQ8pXxDiCZx1v/wPcdOJhokMAiK80DmXr +bnKIW5JGRLEb9Wqe+gpQ3kDdcF/Li1omPvKefHGbFb/xF4SGC7k92VR1mkYaxeJ2Y/e IaYOGBR/CS/MNFaygXsWJxHRw6KXJuwLDtAU/hbmpFqUK2HtG5kqammJfTU+nyOWZGgq egQmOVg88Jm8SxLQMTVJUmUFMlLkQUZchsWPKj9z2PMD66Ee6Bx72+QYAQBsjEWzLXm7 Zruw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=+tbtoQ7gZS65RurxvAssDUa7FuT8iyRBAIe3ZHERmgY=; b=Kp2Per6ixxwyK7VT7XRN1QFEpL8DR8S2aTi2NqTb1xsZv2MiOZ2bxnbnPVehD3NcNa AxpPOz+HUJydO6hbEl4YL8dZR0YGq5G66LXa4yc9aty9N7gX+20+dOrYuTMsiY4HHDiI l8I2vs31161BQYdT487OOmBaG6Wju5ky5wKY0pCOO1CXxPf98mrvDPWarPUAaI/voWI6 rHLZm3IS+c/roXqVj9UrsoEZP5TyhlsUfi+ExI2pESXMwB1j4ZVfeqORfgmwZqvgkOmx vbDlu2Mb6AgVo/k+UuzZLQu8tmPvENoKJF9XvvyATLSE8agii8OckCZZc+PmG8rWrBJa nZsQ== X-Gm-Message-State: APjAAAWLkLwMOKjeRTtGPIaRv3ipee/hjn5s4J7GPTgZRfBvwvDfjjTd 588+jm36CZ3VrmtB3/0wEKmvQQ== X-Google-Smtp-Source: APXvYqz6Q+nfJYcATHwx0Iq+EG08Jp9MX1mpLWz4gLPkDK0fdQ2Sq+OrCBGMcF5gDWLZ6wlxVJQH8Q== X-Received: by 2002:a0c:9d82:: with SMTP id s2mr14040925qvd.38.1576254332680; Fri, 13 Dec 2019 08:25:32 -0800 (PST) Received: from ?IPv6:2620:10d:c0a8:1102:ce0:3629:8daa:1271? ([2620:10d:c091:480::4e65]) by smtp.gmail.com with ESMTPSA id b81sm2934140qkc.135.2019.12.13.08.25.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 13 Dec 2019 08:25:32 -0800 (PST) Subject: Re: [PATCH v6 06/28] btrfs: disallow NODATACOW in HMZONED mode To: Naohiro Aota , linux-btrfs@vger.kernel.org, David Sterba Cc: Chris Mason , Nikolay Borisov , Damien Le Moal , Johannes Thumshirn , Hannes Reinecke , Anand Jain , linux-fsdevel@vger.kernel.org References: <20191213040915.3502922-1-naohiro.aota@wdc.com> <20191213040915.3502922-7-naohiro.aota@wdc.com> From: Josef Bacik Message-ID: <5a099092-3bc1-3595-da3f-281780fd80f4@toxicpanda.com> Date: Fri, 13 Dec 2019 11:25:29 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20191213040915.3502922-7-naohiro.aota@wdc.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 12/12/19 11:08 PM, Naohiro Aota wrote: > NODATACOW implies overwriting the file data on a device, which is > impossible in sequential required zones. Disable NODATACOW globally with > mount option and per-file NODATACOW attribute by masking FS_NOCOW_FL. > > Reviewed-by: Johannes Thumshirn > Signed-off-by: Naohiro Aota Reviewed-by: Josef Bacik Thanks, Josef