linux-kernel - Re: [f2fs-dev] f2fs do DIO write make file corruption

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Message-ID: <6519b8b7-1eb0-f286-7593-5c5ebbfb5554@kernel.org>
Date:   Wed, 11 Aug 2021 11:03:11 +0800
From:   Chao Yu <chao@...nel.org>
To:     Wu Bo <bo.wu@...o.com>, linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] f2fs do DIO write make file corruption

On 2021/8/11 10:48, Wu Bo wrote:
> I use the following command to create a file, the file may got corruption:
> 	f2fs_io write 2 0 512 inc_num dio $path
> 
> And when I use bio or to set the chunk size to 1 block, the file is
> normal. The commands as following:
> 	f2fs_io write 2 0 512 inc_num buffered $path
> 	f2fs_io write 1 0 512 inc_num dio $path
> 
> I find this bug on old kernel version 4.14.117, and not find on version
> 4.19.152. So this bug is fixed. Can anyone can tell me which patch fixed
> this bug?

Not sure,

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.19.y&id=7bae8b6b73e46c307fa355ce086800b7ad6610f8

Thanks,

> 
> 
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