linux-kernel - Re: [PATCH] f2fs: allow compression of files without blocks

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Message-ID: <c181672a-faa2-2f2a-b495-b9c9fee56d50@kernel.org>
Date:   Wed, 6 Jul 2022 22:27:44 +0800
From:   Chao Yu <chao@...nel.org>
To:     Chao Liu <chaoliu719@...il.com>
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Yue Hu <huyue2@...lpad.com>,
        Wayne Zhang <zhangwen@...lpad.com>,
        Chao Liu <liuchao@...lpad.com>
Subject: Re: [PATCH] f2fs: allow compression of files without blocks

On 2022/6/23 12:24, Chao Liu wrote:
> On Wed, Jun 22, 2022 at 08:50:33PM +0800, Chao Yu wrote:
>> On 2022/6/21 14:42, Chao Liu wrote:
>>> From: Chao Liu <liuchao@...lpad.com>
>>>
>>> Files created by truncate have a size but no blocks, so
>>
>> I didn't get it, how can we create file by truncation...
> 
> I'm sorry I didn't make it clear. We can create a file
> by passing a FILE parameter that does not exist
> to the user command truncate(1) [1].
> 
> How about using truncate(1) instead of truncate
> in the description of the change?

Fine to me, as f2fs_disable_compressed_file() uses the same check
condition. ;)

Thanks,

> 
> Thanks,
> 
> [1] truncate(1): https://man7.org/linux/man-pages/man1/truncate.1.html