linux.conf.au, January 2003
      PRACTICALITIES: More Common Functions

Often you want to sleep until something happens.
We usually use a "wait queue".

Step 1: Create a wait_queue_head_t:
 		DECLARE_WAIT_QUEUE_HEAD(my_wq);
OR
 		wait_queue_head_t my_wq;
 		init_waitqueue_head(&my_wq)

Step 2: To sleep on it
Create a wait_queue_t to use.
 			DEFINE_WAIT(me, current);
OR
 			wait_queue_t me;
 			init_wait(&me);