linux-kernel - Re: [PATCH v1 0/5] f2fs: fix large folio read corner cases for immutable files

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Message-ID: <b6193f5d-7d0a-4770-afdf-127851072450@kernel.org>
Date: Thu, 8 Jan 2026 17:23:48 +0800
From: Chao Yu <chao@...nel.org>
To: Nanzhe Zhao <nzzhao@....com>, Jaegeuk Kim <jaegeuk@...nel.org>
Cc: chao@...nel.org, Barry Song <21cnbao@...il.com>,
 linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/5] f2fs: fix large folio read corner cases for
 immutable files

On 1/8/2026 10:17 AM, Nanzhe Zhao wrote:
> Hi Kim,
> At 2026-01-07 11:08:50, "Jaegeuk Kim" <jaegeuk@...nel.org> wrote:
>>> Hi Nanzhe,
>>>
>>> fyi - I applied the beginning two patches first.
>>>
>>> Thanks,
>>>
> 
> Thanks for applying my small changes.
> 
> By the way, I’d like to discuss one more thing about testing for large folios.
> It seems the current xfstests coverage may not be sufficient. Would it be
> welcome for me to contribute some new test cases upstream?

Great, please go ahead, new testcase can be added into tests/f2fs/ directory.

> 
> Also, I think large-folio functionality might also need black-box testing such
> as fault-injection, where we force certain paths to return errors and verify
> behavior under failures. I’d appreciate your thoughts.

It's fine to introduce a new help f2fs_fsverity_verify_page() and inject error
there.

Thanks,

> 
> Thanks,
> Nanzhe
> 
> 
> 
> 
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> 
> 
>