linux-kernel - Re: [f2fs-dev] [PATCH v2 3/3] f2fs: check if swapfile is section-alligned

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Message-ID: <57c26fef-5566-cf91-3768-206ed7f09c7e@kernel.org>
Date:   Mon, 1 Mar 2021 22:15:57 +0800
From:   Chao Yu <chao@...nel.org>
To:     Huang Jianan <huangjianan@...o.com>,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     linux-kernel@...r.kernel.org, zhangshiming@...o.com
Subject: Re: [f2fs-dev] [PATCH v2 3/3] f2fs: check if swapfile is
 section-alligned

On 2021/3/1 12:58, Huang Jianan via Linux-f2fs-devel wrote:
> If the swapfile isn't created by pin and fallocate, it can't be
> guaranteed section-aligned, so it may be selected by f2fs gc. When
> gc_pin_file_threshold is reached, the address of swapfile may change,
> but won't be synchronized to swap_extent, so swap will write to wrong
> address, which will cause data corruption.
> 
> Signed-off-by: Huang Jianan <huangjianan@...o.com>
> Signed-off-by: Guo Weichao <guoweichao@...o.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,