linux-kernel - Re: [PATCH] f2fs: read page index before freeing

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Message-ID: <2cd91c95-598d-fcc1-b1d6-6fddb224efcf@huawei.com>
Date:   Thu, 22 Nov 2018 19:21:16 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Pan Bian <bianpan2016@....com>, Jaegeuk Kim <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] f2fs: read page index before freeing

Hi Pan,

On 2018/11/22 18:58, Pan Bian wrote:
> The function truncate_node frees the page with f2fs_put_page. However,
> the page index is read after that. So, the patch reads the index before
> freeing the page.

Good catch!

It will be better to add:

Fixes: bf39c00a9a7f ("f2fs: drop obsolete node page when it is truncated")
Cc: <stable@...r.kernel.org>

> 
> Signed-off-by: Pan Bian <bianpan2016@....com>

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

Thanks,