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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 567D8C4321A for ; Tue, 11 Jun 2019 03:02:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3310B20896 for ; Tue, 11 Jun 2019 03:02:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390791AbfFKDCH (ORCPT ); Mon, 10 Jun 2019 23:02:07 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:36392 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2390717AbfFKDCH (ORCPT ); Mon, 10 Jun 2019 23:02:07 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 299CDA84DA002391A8D3; Tue, 11 Jun 2019 11:02:05 +0800 (CST) Received: from [10.134.22.195] (10.134.22.195) by smtp.huawei.com (10.3.19.202) with Microsoft SMTP Server (TLS) id 14.3.439.0; Tue, 11 Jun 2019 11:01:59 +0800 Subject: Re: [PATCH v2 1/2] staging: erofs: add requirements field in superblock To: Gao Xiang , Greg Kroah-Hartman , CC: LKML , , "Chao Yu" , Miao Xie , , Fang Wei , References: <20190611024220.86121-1-gaoxiang25@huawei.com> From: Chao Yu Message-ID: <9e0cb4bb-6ffe-95fb-c892-e321bc94f14a@huawei.com> Date: Tue, 11 Jun 2019 11:01:58 +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: <20190611024220.86121-1-gaoxiang25@huawei.com> 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: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 2019/6/11 10:42, Gao Xiang wrote: > There are some backward incompatible features pending > for months, mainly due to on-disk format expensions. > > However, we should ensure that it cannot be mounted with > old kernels. Otherwise, it will causes unexpected behaviors. > > Fixes: ba2b77a82022 ("staging: erofs: add super block operations") > Cc: # 4.19+ > Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Thanks,