BTREE_TP            5 include/linux/btree-type.h #define BTREE_FN(name)			BTREE_TP(btree_ ## name)
BTREE_TP            6 include/linux/btree-type.h #define BTREE_TYPE_HEAD			BTREE_TP(struct btree_head)
BTREE_TP            7 include/linux/btree-type.h #define VISITOR_FN			BTREE_TP(visitor)