xfs_btree_setbuf
xfs_btree_setbuf(cur, lev, bp);
xfs_btree_setbuf(cur, lev, bp);
xfs_btree_setbuf(cur, level, bp);
xfs_btree_setbuf(cur, level, rbp);
xfs_btree_setbuf(cur, 0, cbp);
xfs_btree_setbuf(cur, level, cbp);
xfs_btree_setbuf(cur, cur->bc_nlevels, nbp);