linux-kernel - Re: [Ocfs2-devel] [PATCH 1/4 V2] ocfs2: use retval instead of status for checking error

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Date:	Thu, 19 Mar 2015 14:24:51 +0800
From:	Joseph Qi <joseph.qi@...wei.com>
To:	Daeseok Youn <daeseok.youn@...il.com>
CC:	<mfasheh@...e.com>, <akpm@...ux-foundation.org>,
	<richard.weinberger@...il.com>, <ocfs2-devel@....oracle.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [Ocfs2-devel] [PATCH 1/4 V2] ocfs2: use retval instead of status
 for checking error

Looks good to me.

On 2015/2/28 7:48, Daeseok Youn wrote:
> The use of 'status' in __ocfs2_add_entry() can return wrong
> status when some functions are failed.
> 
> If ocfs2_journal_access_db() in __ocfs2_add_entry() is failed,
> that status is saved to 'status' but return variable is 'retval'
> which is saved 'success' status. In case of this,  __ocfs2_add_entry()
> is failed but can be returned as 'success'.
> 
> So replace 'status' with 'retval'.
> 
> Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>

Reviewed-by: Joseph Qi <joseph.qi@...wei.com>
> ---
> V2 : update changelog
> 
>  fs/ocfs2/dir.c |   12 ++++++------
>  1 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
> index b08050b..1478a50 100644
> --- a/fs/ocfs2/dir.c
> +++ b/fs/ocfs2/dir.c
> @@ -1617,7 +1617,7 @@ int __ocfs2_add_entry(handle_t *handle,
>  	struct ocfs2_dir_entry *de, *de1;
>  	struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_fe_bh->b_data;
>  	struct super_block *sb = dir->i_sb;
> -	int retval, status;
> +	int retval;
>  	unsigned int size = sb->s_blocksize;
>  	struct buffer_head *insert_bh = lookup->dl_leaf_bh;
>  	char *data_start = insert_bh->b_data;
> @@ -1695,22 +1695,22 @@ int __ocfs2_add_entry(handle_t *handle,
>  			}
>  
>  			if (insert_bh == parent_fe_bh)
> -				status = ocfs2_journal_access_di(handle,
> +				retval = ocfs2_journal_access_di(handle,
>  								 INODE_CACHE(dir),
>  								 insert_bh,
>  								 OCFS2_JOURNAL_ACCESS_WRITE);
>  			else {
> -				status = ocfs2_journal_access_db(handle,
> +				retval = ocfs2_journal_access_db(handle,
>  								 INODE_CACHE(dir),
>  								 insert_bh,
>  					      OCFS2_JOURNAL_ACCESS_WRITE);
>  
>  				if (ocfs2_dir_indexed(dir)) {
> -					status = ocfs2_dx_dir_insert(dir,
> +					retval = ocfs2_dx_dir_insert(dir,
>  								handle,
>  								lookup);
> -					if (status) {
> -						mlog_errno(status);
> +					if (retval) {
> +						mlog_errno(retval);
>  						goto bail;
>  					}
>  				}
> 


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