[Ocfs2-devel] [PATCH] ocfs2: add missing return value and check for sb_getblk

[Jeff Liu <jeff.liu@oracle.com>]

On 09/18/2013 03:36 PM, Rui Xiang wrote:

> - Fix the return err in serval places missed in
>   (ocfs2: return ENOMEM while sb_getblk failing).
> 
> - Add the missing check for new_bh in ocfs2_create_xattr_block.
> 
> Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
> Signed-off-by: Rui Xiang <rui.xiang@huawei.com>

Looks good, thanks.

Reviewed-by: Jie Liu <jeff.liu@oracle.com>

> ---
>  fs/ocfs2/aops.c           | 1 +
>  fs/ocfs2/buffer_head_io.c | 4 ++--
>  fs/ocfs2/xattr.c          | 5 +++++
>  3 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
> index f37d3c0..e415919 100644
> --- a/fs/ocfs2/aops.c
> +++ b/fs/ocfs2/aops.c
> @@ -92,6 +92,7 @@ static int ocfs2_symlink_get_block(struct inode *inode, sector_t iblock,
>  			    iblock;
>  		buffer_cache_bh = sb_getblk(osb->sb, blkno);
>  		if (!buffer_cache_bh) {
> +			err = -ENOMEM;
>  			mlog(ML_ERROR, "couldn't getblock for symlink!\n");
>  			goto bail;
>  		}
> diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
> index 5d18ad1..5b704c6 100644
> --- a/fs/ocfs2/buffer_head_io.c
> +++ b/fs/ocfs2/buffer_head_io.c
> @@ -115,7 +115,7 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
>  		if (bhs[i] == NULL) {
>  			bhs[i] = sb_getblk(osb->sb, block++);
>  			if (bhs[i] == NULL) {
> -				status = -EIO;
> +				status = -ENOMEM;
>  				mlog_errno(status);
>  				goto bail;
>  			}
> @@ -214,7 +214,7 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
>  			bhs[i] = sb_getblk(sb, block++);
>  			if (bhs[i] == NULL) {
>  				ocfs2_metadata_cache_io_unlock(ci);
> -				status = -EIO;
> +				status = -ENOMEM;
>  				mlog_errno(status);
>  				goto bail;
>  			}
> diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
> index 05d97c7..024ce11 100644
> --- a/fs/ocfs2/xattr.c
> +++ b/fs/ocfs2/xattr.c
> @@ -2865,6 +2865,11 @@ static int ocfs2_create_xattr_block(struct inode *inode,
>  	}
>  
>  	new_bh = sb_getblk(inode->i_sb, first_blkno);
> +	if (!new_bh) {
> +		ret = -ENOMEM;
> +		mlog_errno(ret);
> +		goto end;
> +	}
>  	ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh);
>  
>  	ret = ocfs2_journal_access_xb(ctxt->handle, INODE_CACHE(inode),