xfs: move btree cursor into bmalloca

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

fs/xfs/xfs_bmap.h

@@ -120,6 +120,8 @@ typedef struct xfs_bmalloca {
 	xfs_extlen_t		length;	/* i/o length asked/allocated */
 	xfs_fsblock_t		blkno;	/* starting block of new extent */
 
+	struct xfs_btree_cur	*cur;	/* btree cursor */
+
 	xfs_extlen_t		total;	/* total blocks needed for xaction */
 	xfs_extlen_t		minlen;	/* minimum allocation size (blocks) */
 	xfs_extlen_t		minleft; /* amount must be left after alloc */