blk.h (8324aa91d1e11a1fc25f209687a0b2e6c2ed47d0) blk.h (86db1e29772372155db08ff48a9ceb76e11a2ad1)
1#ifndef BLK_INTERNAL_H
2#define BLK_INTERNAL_H
3
1#ifndef BLK_INTERNAL_H
2#define BLK_INTERNAL_H
3
4/* Amount of time in which a process may batch requests */
5#define BLK_BATCH_TIME (HZ/50UL)
6
7/* Number of requests a "batching" process may submit */
8#define BLK_BATCH_REQ 32
9
4extern struct kmem_cache *blk_requestq_cachep;
5extern struct kobj_type blk_queue_ktype;
6
10extern struct kmem_cache *blk_requestq_cachep;
11extern struct kobj_type blk_queue_ktype;
12
13void rq_init(struct request_queue *q, struct request *rq);
14void init_request_from_bio(struct request *req, struct bio *bio);
15void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
16 struct bio *bio);
17int ll_back_merge_fn(struct request_queue *q, struct request *req,
18 struct bio *bio);
7void __blk_queue_free_tags(struct request_queue *q);
8
19void __blk_queue_free_tags(struct request_queue *q);
20
21void blk_unplug_work(struct work_struct *work);
22void blk_unplug_timeout(unsigned long data);
23
24struct io_context *current_io_context(gfp_t gfp_flags, int node);
25
9void blk_queue_congestion_threshold(struct request_queue *q);
10
11/*
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.
15 */
16static inline int queue_congestion_on_threshold(struct request_queue *q)

--- 13 unchanged lines hidden --- 		26void blk_queue_congestion_threshold(struct request_queue *q);
27
28/*
29 * Return the threshold (number of used requests) at which the queue is
30 * considered to be congested. It include a little hysteresis to keep the
31 * context switch rate down.
32 */
33static inline int queue_congestion_on_threshold(struct request_queue *q)

--- 13 unchanged lines hidden ---