linux-kernel - Re: [f2fs-dev] [PATCH v4 2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

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Message-ID: <1c6a9b6c-8bce-4a02-9dbb-a883e74c0045@kernel.org>
Date: Tue, 24 Jun 2025 22:19:16 +0800
From: Chao Yu <chao@...nel.org>
To: wangzijie <wangzijie1@...or.com>, jaegeuk@...nel.org
Cc: chao@...nel.org, linux-f2fs-devel@...ts.sourceforge.net,
 linux-kernel@...r.kernel.org, bintian.wang@...or.com, feng.han@...or.com,
 niuzhiguo84@...il.com
Subject: Re: [f2fs-dev] [PATCH v4 2/2] f2fs: don't allow unaligned truncation
 to smaller/equal size on pinned file

On 2025/6/24 11:59, wangzijie wrote:
> To prevent scattered pin block generation, don't allow non-section aligned truncation
> to smaller or equal size on pinned file. But for truncation to larger size, after
> commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
> we only support overwrite IO to pinned file, so we don't need to consider
> attr->ia_size > i_size case.
> 
> Signed-off-by: wangzijie <wangzijie1@...or.com>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,