diff options
Diffstat (limited to 'block/blk.h')
| -rw-r--r-- | block/blk.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h index d88549df1b09..083394007199 100644 --- a/block/blk.h +++ b/block/blk.h @@ -1,11 +1,28 @@ #ifndef BLK_INTERNAL_H #define BLK_INTERNAL_H +/* Amount of time in which a process may batch requests */ +#define BLK_BATCH_TIME (HZ/50UL) + +/* Number of requests a "batching" process may submit */ +#define BLK_BATCH_REQ 32 + extern struct kmem_cache *blk_requestq_cachep; extern struct kobj_type blk_queue_ktype; +void rq_init(struct request_queue *q, struct request *rq); +void init_request_from_bio(struct request *req, struct bio *bio); +void blk_rq_bio_prep(struct request_queue *q, struct request *rq, + struct bio *bio); +int ll_back_merge_fn(struct request_queue *q, struct request *req, + struct bio *bio); void __blk_queue_free_tags(struct request_queue *q); +void blk_unplug_work(struct work_struct *work); +void blk_unplug_timeout(unsigned long data); + +struct io_context *current_io_context(gfp_t gfp_flags, int node); + void blk_queue_congestion_threshold(struct request_queue *q); /* |