linux-kernel - Re: [PATCH 1/3] f2fs: fix to wait page writeback during revoking atomic write

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Message-ID: <56edfbcd-b400-d68e-9a4a-6b063bdb008f@huawei.com>
Date:   Fri, 18 May 2018 09:26:33 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>
Subject: Re: [PATCH 1/3] f2fs: fix to wait page writeback during revoking
 atomic write

Hi Jaegeuk,

Could you recheck this patch?

On 2018/4/23 10:36, Chao Yu wrote:
> After revoking atomic write, related LBA can be reused by others, so we
> need to wait page writeback before reusing the LBA, in order to avoid
> interference between old atomic written in-flight IO and new IO.
> 
> Signed-off-by: Chao Yu <yuchao0@...wei.com>
> ---
>  fs/f2fs/segment.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index cba59fc58eb6..24299f81f80d 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -231,6 +231,8 @@ static int __revoke_inmem_pages(struct inode *inode,
>  
>  		lock_page(page);
>  
> +		f2fs_wait_on_page_writeback(page, DATA, true);
> +
>  		if (recover) {
>  			struct dnode_of_data dn;
>  			struct node_info ni;
>