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Date: Tue, 24 Feb 2026 03:55:41 +0000
From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Nanzhe Zhao <nzzhao@126.com>
Cc: Chao Yu <chao@kernel.org>, Barry Song <21cnbao@gmail.com>,
	linux-kernel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix to prevent clearing immutable for
 large folio supported inode
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In-Reply-To: <43f34976.480b.19be98c144d.Coremail.nzzhao@126.com>

On 01/23, Nanzhe Zhao wrote:
> Hi Kim:
> At 2026-01-23 07:10:05, "Jaegeuk Kim" <jaegeuk@kernel.org> wrote:
> 
> >
> >Yes, I was hitting some issues when I convert the mapping while inode is alive.
> >So, for now, we should set it in f2fs_iget() only.
> >
> 
> What about using mapping_set_xxx functions in f2fs_new_inode  then?

How can we guarantee this will be a read-only file?

> It maybe be a bit odd to me that we create a immutable file but we can
> only get large folios for this inode  when the inode is evicted and get
> by f2fs_iget again, not get large folios by the first place.
> 
> Thanks,
> Nanzhe Zhao