linux-ext4 - Re: [PATCH 4/4] ext4: check ext4_journal_get_write

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Message-Id: <1203409170.3612.33.camel@localhost.localdomain>
Date:	Tue, 19 Feb 2008 00:19:30 -0800
From:	Mingming Cao <cmm@...ibm.com>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	linux-ext4@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Tweedie <sct@...hat.com>, adilger@...sterfs.com,
	Theodore Tso <tytso@....EDU>
Subject: Re: [PATCH 4/4] ext4: check ext4_journal_get_write_access() errors

On Sun, 2008-02-17 at 15:15 +0900, Akinobu Mita wrote:
> Check ext4_journal_get_write_access() errors.
> 
Acked and added to ext4 patch queue

Mingming
> Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
> Cc: Stephen Tweedie <sct@...hat.com>
> Cc: adilger@...sterfs.com
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Mingming Cao <cmm@...ibm.com>
> Cc: Theodore Tso <tytso@....EDU>
> ---
>  fs/ext4/namei.c |    9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> Index: 2.6-rc/fs/ext4/namei.c
> ===================================================================
> --- 2.6-rc.orig/fs/ext4/namei.c
> +++ 2.6-rc/fs/ext4/namei.c
> @@ -57,10 +57,15 @@ static struct buffer_head *ext4_append(h
> 
>  	*block = inode->i_size >> inode->i_sb->s_blocksize_bits;
> 
> -	if ((bh = ext4_bread(handle, inode, *block, 1, err))) {
> +	bh = ext4_bread(handle, inode, *block, 1, err);
> +	if (bh) {
>  		inode->i_size += inode->i_sb->s_blocksize;
>  		EXT4_I(inode)->i_disksize = inode->i_size;
> -		ext4_journal_get_write_access(handle,bh);
> +		*err = ext4_journal_get_write_access(handle, bh);
> +		if (*err) {
> +			brelse(bh);
> +			bh = NULL;
> +		}
>  	}
>  	return bh;
>  }

-
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