DBG("FT %p \n", tn);
pr_debug("FT %p \n", tn);
static void tnode_free(struct tnode *tn){	BUG_ON(!tn);	if (IS_LEAF(tn)) {		free_leaf((struct leaf *)tn);		DBG("FL %p \n", tn);	} else {		__tnode_free(tn);		DBG("FT %p \n", tn);	}}