Received: by 2002:a05:6a10:87d6:0:0:0:0 with SMTP id g22csp1103683pxr; Mon, 11 Apr 2022 15:23:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy/l1Pj+gaO7x/MkbDcqoiCkVDJq3GBGbDA/U7zKi9w3yc5OFEsIqtq9sgYyPcWr40meEhe X-Received: by 2002:a17:903:22c2:b0:154:9ed:eabd with SMTP id y2-20020a17090322c200b0015409edeabdmr35697158plg.58.1649715783507; Mon, 11 Apr 2022 15:23:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1649715783; cv=none; d=google.com; s=arc-20160816; b=fcLnzjeRdmoz45RdtBP6gKm3yuHPmJHqRlTP/USFJ6QhlS4yhpj4KlH8UWVI7sSemM zgUKc2sVvs9+TE3yVY2kf75SjpJLERIyvNzBe5ycPGaesTDu/8QKCpWl7Cn2gJXQ8W5x 3i9EQnVuQBjPrF98qo5yI5zc8I+wttfF08QADXtzHsrw5LLoB4PuDE9CxRXtMV6Jk1U9 a7GD+iZNoG8NNg9GEJGzWAxi8vtGAYpVKNb7cRHz7jQD455jZQN8fwoV4T3a7DuD9qw1 /+kjNElu69Bo0K50O89Ewl1fyCbdRGmmzROowTIDbvuasr7PHBRHNuTtCUVJ2qbAr8/X YO4w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to:from :references:cc:to:subject:user-agent:mime-version:date:message-id; bh=RlwLpbUtK7aEwyxQ8NP12wri9k5dcnic4c6oyOL50Q0=; b=UDBrGqilQ89U2IMpRmu529WVtrrNIflzJ+YdbfzCsWXs9aS6gCTd/YO45lBCxpyZYY JsTfwFtPhGBCQdlEj9+zQysrWcSPkYwvyWGp/doeIFCN/5VOvgM76HvbOfQH7z/+bSkA Vhg1Ro2xI+XE1zWoCY86Z8vjH4tuE/NUQUMfXRcuKmtt8uiKPPQj0+ehSqI3qdjVxxHb Ojg0VyI7aLoxRLy7OP8gB2KQkV1c2W9QY01OeVCz5Nlf/qdt7qX0LQD1KCpgw8RfNPio dZH/9JOrDDj+emp6EVBCOQMGXGVy67NAI86+aSDIi40ZwE6NGgTpJrPE1GMRD3kcz0SB /PVA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 7-20020a630b07000000b003816043ef5bsi984269pgl.336.2022.04.11.15.22.46; Mon, 11 Apr 2022 15:23:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230064AbiDKOFk (ORCPT + 99 others); Mon, 11 Apr 2022 10:05:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241696AbiDKOFj (ORCPT ); Mon, 11 Apr 2022 10:05:39 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30B9B215 for ; Mon, 11 Apr 2022 07:03:25 -0700 (PDT) Received: from kwepemi500013.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KcVrv0p8NzgYgF; Mon, 11 Apr 2022 22:01:35 +0800 (CST) Received: from kwepemm600015.china.huawei.com (7.193.23.52) by kwepemi500013.china.huawei.com (7.221.188.120) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 11 Apr 2022 22:03:22 +0800 Received: from [10.174.176.52] (10.174.176.52) by kwepemm600015.china.huawei.com (7.193.23.52) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 11 Apr 2022 22:03:22 +0800 Message-ID: <6219ec61-d359-1272-aa8f-26a1f76c45c3@huawei.com> Date: Mon, 11 Apr 2022 22:03:21 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.1 Subject: Re: [PATCH 2/2] NFS: Don't report write errors twice To: , CC: Scott Mayhew , "zhangxiaoxu (A)" , "zhangyi (F)" References: <20220409200108.94208-1-trondmy@kernel.org> <20220409200108.94208-2-trondmy@kernel.org> From: "chenxiaosong (A)" In-Reply-To: <20220409200108.94208-2-trondmy@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.176.52] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600015.china.huawei.com (7.193.23.52) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-5.8 required=5.0 tests=BAYES_00,NICE_REPLY_A, RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org 在 2022/4/10 4:01, trondmy@kernel.org 写道: > From: Trond Myklebust > > Any errors reported by the write() system call need to be cleared from > the file descriptor's error tracking. The current call to nfs_wb_all() > causes the error to be reported, but since it doesn't call > file_check_and_advance_wb_err(), we can end up reporting the same error > a second time when the application calls fsync(). > > Reported-by: ChenXiaoSong > Fixes: ce368536dd61 ("nfs: nfs_file_write() should check for writeback errors") > Signed-off-by: Trond Myklebust > --- > fs/nfs/file.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/fs/nfs/file.c b/fs/nfs/file.c > index 81c80548a5c6..54dc6f176f5c 100644 > --- a/fs/nfs/file.c > +++ b/fs/nfs/file.c > @@ -677,9 +677,10 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) > /* Return error values */ > error = filemap_check_wb_err(file->f_mapping, since); > if (nfs_need_check_write(file, inode, error)) { > - int err = nfs_wb_all(inode); > - if (err < 0) > - result = err; > + nfs_wb_all(inode); > + error = file_check_and_advance_wb_err(file); > + if (error < 0) > + result = error; > } > nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written); > out: > After merging this patchset, second `dd` of the following reproducer will still report unexpected error: No space left on device. Reproducer: nfs server | nfs client -----------------------------|--------------------------------------------- # No space left on server | fallocate -l 100G /svr/nospc | | mount -t nfs $nfs_server_ip:/ /mnt | | # Expected error: No space left on device | dd if=/dev/zero of=/mnt/file count=1 ibs=10K | | # Release space on mountpoint | rm /mnt/nospc | | # Unexpected error: No space left on device | dd if=/dev/zero of=/mnt/file count=1 ibs=10K