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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no 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 2108FC10DCE for ; Tue, 24 Mar 2020 22:06:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F40172076F for ; Tue, 24 Mar 2020 22:06:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728414AbgCXWGY convert rfc822-to-8bit (ORCPT ); Tue, 24 Mar 2020 18:06:24 -0400 Received: from relay9-d.mail.gandi.net ([217.70.183.199]:34383 "EHLO relay9-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728184AbgCXWGY (ORCPT ); Tue, 24 Mar 2020 18:06:24 -0400 X-Originating-IP: 91.224.148.103 Received: from xps13 (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 0B774FF802; Tue, 24 Mar 2020 22:06:21 +0000 (UTC) Date: Tue, 24 Mar 2020 23:06:20 +0100 From: Miquel Raynal To: Xiaoming Ni Cc: , , , , , Subject: Re: [PATCH] mtd:Fix issue where write_cached_data() fails but write() still returns success Message-ID: <20200324230620.174db1a7@xps13> In-Reply-To: <1584674111-101462-1-git-send-email-nixiaoming@huawei.com> References: <1584674111-101462-1-git-send-email-nixiaoming@huawei.com> Organization: Bootlin X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Xiaoming, Xiaoming Ni wrote on Fri, 20 Mar 2020 11:15:11 +0800: > mtdblock_flush() > -->write_cached_data() > --->erase_write() > mtdblock: erase of region [0x40000, 0x20000] on "xxx" failed > > Because mtdblock_flush() always returns 0, > even if write_cached_data() fails and data is not written to the device, > syscall_write() still returns success I reworded a bit the commit log and also added a ' ' after 'mtd:' in the title when applying. Thanks, Miquèl