void blkcg_exit_queue(struct request_queue *q)
{
	spin_lock_irq(q->queue_lock);
	blkg_destroy_all(q);
	spin_unlock_irq(q->queue_lock);

	blk_throtl_exit(q);
}
void blkcg_exit_queue(struct request_queue *q)
{
	spin_lock_irq(q->queue_lock);
	blkg_destroy_all(q);
	spin_unlock_irq(q->queue_lock);

	blk_throtl_exit(q);
}