linux-ext4 - Re: [PATCH v4] ext4: fix direct I/O read error

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Message-Id: <7C2EEB3C-3007-469A-B3E6-B810AFB6E983@126.com>
Date:   Fri, 14 Aug 2020 16:38:16 +0800
From:   姜迎 <jiangying8582@....com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     tytso@....edu, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, wanglong19@...tuan.com,
        heguanjun@...tuan.com, jack@...e.cz
Subject: Re: [PATCH v4] ext4: fix direct I/O read error

Ok，I will make time to do it.

发自我的iPhone

> 在 2020年8月14日，下午4:04，Christoph Hellwig <hch@...radead.org> 写道：
> 
> On Wed, Aug 05, 2020 at 03:40:34PM +0800, Jiang Ying wrote:
>> This patch is used to fix ext4 direct I/O read error when
>> the read size is not aligned with block size.
>> 
>> Then, I will use a test to explain the error.
>> 
>> (1) Make a file that is not aligned with block size:
>>    $dd if=/dev/zero of=./test.jar bs=1000 count=3
>> 
>> (2) I wrote a source file named "direct_io_read_file.c" as following:
> 
> Can you please add your reproducer to xfstests?
> 
> Thanks!