xfs: make xfs_trans_get_buf return an error code

Convert xfs_trans_get_buf() to return numeric error codes like most
everywhere else in xfs.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index a0be934ec811..752c7fef9de7 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -173,22 +173,17 @@ int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
 		struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
 		struct xfs_buf **bpp);
 
-static inline struct xfs_buf *
+static inline int
 xfs_trans_get_buf(
 	struct xfs_trans	*tp,
 	struct xfs_buftarg	*target,
 	xfs_daddr_t		blkno,
 	int			numblks,
-	uint			flags)
+	uint			flags,
+	struct xfs_buf		**bpp)
 {
-	struct xfs_buf		*bp;
-	int			error;
-
 	DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
-	error = xfs_trans_get_buf_map(tp, target, &map, 1, flags, &bp);
-	if (error)
-		return NULL;
-	return bp;
+	return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
 }
 
 int		xfs_trans_read_buf_map(struct xfs_mount *mp,