604 	struct rb_node **p, *parent;  in bfq_rq_pos_tree_lookup()  local
607 	parent = NULL;  in bfq_rq_pos_tree_lookup()
612 		parent = *p;  in bfq_rq_pos_tree_lookup()
613 		bfqq = rb_entry(parent, struct bfq_queue, pos_node);  in bfq_rq_pos_tree_lookup()
629 	*ret_parent = parent;  in bfq_rq_pos_tree_lookup()
658 	struct rb_node **p, *parent;  in bfq_pos_tree_add_move()  local
685 			blk_rq_pos(bfqq->next_rq), &parent, &p);  in bfq_pos_tree_add_move()
687 		rb_link_node(&bfqq->pos_node, parent, p);  in bfq_pos_tree_add_move()
775 	struct rb_node **new = &(root->rb_root.rb_node), *parent = NULL;  in bfq_weights_tree_add()  local
797 		parent = *new;  in bfq_weights_tree_add()
830 	rb_link_node(&bfqq->weight_counter->weights_node, parent, new);  in bfq_weights_tree_add()
871 	struct bfq_entity *entity = bfqq->entity.parent;  in bfq_weights_tree_remove()
1149 	bfqd->burst_parent_entity = bfqq->entity.parent;  in bfq_reset_burst_list()
1337 	    bfqq->entity.parent != bfqd->burst_parent_entity) {  in bfq_handle_burst()
1695 	if (in_serv_bfqq->entity.parent == bfqq->entity.parent) {  in bfq_bfqq_higher_class_or_weight()
1699 		if (bfqq->entity.parent)  in bfq_bfqq_higher_class_or_weight()
1700 			bfqq_weight = bfqq->entity.parent->weight;  in bfq_bfqq_higher_class_or_weight()
1703 		if (in_serv_bfqq->entity.parent)  in bfq_bfqq_higher_class_or_weight()
1704 			in_serv_weight = in_serv_bfqq->entity.parent->weight;  in bfq_bfqq_higher_class_or_weight()
2565 	struct rb_node *parent, *node;  in bfqq_find_close()  local
2575 	__bfqq = bfq_rq_pos_tree_lookup(bfqd, root, sector, &parent, NULL);  in bfqq_find_close()
2584 	__bfqq = rb_entry(parent, struct bfq_queue, pos_node);  in bfqq_find_close()
2658 	if (new_bfqq->entity.parent != bfqq->entity.parent)  in bfq_setup_merge()
2877 	    bfqq->entity.parent == in_service_bfqq->entity.parent &&  in bfq_setup_cooperator()
2952 	if (cur_bfqq->entity.parent &&  in bfq_reassign_last_bfqq()
2953 	    cur_bfqq->entity.parent->last_bfqq_created == cur_bfqq)  in bfq_reassign_last_bfqq()
2954 		cur_bfqq->entity.parent->last_bfqq_created = new_bfqq;  in bfq_reassign_last_bfqq()
4308 	entity = entity->parent;  in bfq_bfqq_expire()
5541 	struct bfq_queue **source_bfqq = bfqq->entity.parent ?  in bfq_do_or_sched_stable_merge()
5542 		&bfqq->entity.parent->last_bfqq_created :  in bfq_do_or_sched_stable_merge()
5570 		bfqq->entity.parent != last_bfqq_created->entity.parent ||  in bfq_do_or_sched_stable_merge()
6930 	root_group->entity.parent = NULL;  in bfq_init_root_group()