linux-ext4 - Re: [PATCH 1/5] ext4: convert write_begin methods to stable_page

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Message-ID: <20130422123648.GC2039@gmail.com>
Date:	Mon, 22 Apr 2013 20:36:48 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	Dmitry Monakhov <dmonakhov@...nvz.org>
Cc:	linux-ext4@...r.kernel.org, jack@...e.cz
Subject: Re: [PATCH 1/5] ext4: convert write_begin methods to
 stable_page_writes semantics

On Sun, Apr 14, 2013 at 11:01:33PM +0400, Dmitry Monakhov wrote:
> use wait_for_stable_page() instead of wait_on_page_writeback()
> 
> Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
Reviewed-by: Zheng Liu <wenqing.lz@...bao.com>
Regards,
                                                - Zheng
> ---
>  fs/ext4/inode.c |    5 +++--
>  1 files changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index 62189c8..1be5827 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -1028,7 +1028,8 @@ retry_journal:
>  		ext4_journal_stop(handle);
>  		goto retry_grab;
>  	}
> -	wait_on_page_writeback(page);
> +	/* In case writeback began while the page was unlocked */
> +	wait_for_stable_page(page);
>  
>  	if (ext4_should_dioread_nolock(inode))
>  		ret = __block_write_begin(page, pos, len, ext4_get_block_write);
> @@ -2715,7 +2716,7 @@ retry_journal:
>  		goto retry_grab;
>  	}
>  	/* In case writeback began while the page was unlocked */
> -	wait_on_page_writeback(page);
> +	wait_for_stable_page(page);
>  
>  	ret = __block_write_begin(page, pos, len, ext4_da_get_block_prep);
>  	if (ret < 0) {
> -- 
> 1.7.1
> 
> --
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