linux-kernel - Re: [PATCH 1/4] f2fs: fix to clear private data in page

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Date:	Fri, 29 Apr 2016 19:19:15 +0800
From:	Chao Yu <chao@...nel.org>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] f2fs: fix to clear private data in page

Hi Jaegeuk,

On 2016/4/29 7:29, Jaegeuk Kim wrote:
> Hi Chao,
> 
> Could you check your email setting?
> All the patches are corrupted, as git am says.

My bad, I use thunderbird for sending patches, but yesterday I upgrade it to
version 45.0, it forces wrapping long line for email content, so the patches
become corrupted to git-am.

Later, I will resend them.

Thanks,

> 
> Thanks,
> 
> On Thu, Apr 28, 2016 at 11:13:48PM +0800, Chao Yu wrote:
>> From: Chao Yu <yuchao0@...wei.com>
>>
>> Private data in page should be removed during ->releasepage or
>> ->invalidatepage, otherwise garbage data would be remained in that page.
>>
>> Signed-off-by: Chao Yu <yuchao0@...wei.com>
>> ---
>>  fs/f2fs/data.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
>> index 38ce5d6..888f178 100644
>> --- a/fs/f2fs/data.c
>> +++ b/fs/f2fs/data.c
>> @@ -1723,6 +1723,7 @@ void f2fs_invalidate_page(struct page *page, unsigned int
>> offset,
>>  	if (IS_ATOMIC_WRITTEN_PAGE(page))
>>  		return;
>>
>> +	set_page_private(page, 0);
>>  	ClearPagePrivate(page);
>>  }
>>
>> @@ -1736,6 +1737,7 @@ int f2fs_release_page(struct page *page, gfp_t wait)
>>  	if (IS_ATOMIC_WRITTEN_PAGE(page))
>>  		return 0;
>>
>> +	set_page_private(page, 0);
>>  	ClearPagePrivate(page);
>>  	return 1;
>>  }
>> -- 
>> 2.7.2