rb_add_cached
rb_add_cached(&entity->rb_tree_node, &rq->rb_tree_root,
rb_add_cached(&info->bytes_index, &ctl->free_space_bytes, entry_less);
rb_add_cached(&info->bytes_index, &ctl->free_space_bytes, entry_less);
rb_add_cached(&entry->bytes_index, &ctl->free_space_bytes,
rb_add_cached(&waiter->tree.entry, &lock->waiters, __waiter_less);
rb_add_cached(&waiter->pi_tree.entry, &task->pi_waiters, __pi_waiter_less);
rb_add_cached(&dl_se->rb_node, &dl_rq->root, __dl_less);
leftmost = rb_add_cached(&p->pushable_dl_tasks,
return rb_add_cached(&node->node, &head->rb_root, __timerqueue_less);