4 extern struct kmem_cache
*blk_requestq_cachep
;
5 extern struct kobj_type blk_queue_ktype
;
7 void __blk_queue_free_tags(struct request_queue
*q
);
9 void blk_queue_congestion_threshold(struct request_queue
*q
);
12 * Return the threshold (number of used requests) at which the queue is
13 * considered to be congested. It include a little hysteresis to keep the
14 * context switch rate down.
16 static inline int queue_congestion_on_threshold(struct request_queue
*q
)
18 return q
->nr_congestion_on
;
22 * The threshold at which a queue is considered to be uncongested
24 static inline int queue_congestion_off_threshold(struct request_queue
*q
)
26 return q
->nr_congestion_off
;