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alistair23-linux
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elevator: make the rqhash helpers exported 

Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
hifive-unleashed-5.1
Jens Axboe 2016-12-07 08:43:31 -07:00
parent f04c3df3ef
commit 70b3ea056f
2 changed files with 9 additions and 4 deletions
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8
block/elevator.c
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@ -248,13 +248,13 @@ static inline void __elv_rqhash_del(struct request *rq)
rq->rq_flags &= ~RQF_HASHED;
}
static void elv_rqhash_del(struct request_queue *q, struct request *rq)
void elv_rqhash_del(struct request_queue *q, struct request *rq)
{
if (ELV_ON_HASH(rq))
__elv_rqhash_del(rq);
}
static void elv_rqhash_add(struct request_queue *q, struct request *rq)
void elv_rqhash_add(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
@ -263,13 +263,13 @@ static void elv_rqhash_add(struct request_queue *q, struct request *rq)
rq->rq_flags |= RQF_HASHED;
}
static void elv_rqhash_reposition(struct request_queue *q, struct request *rq)
void elv_rqhash_reposition(struct request_queue *q, struct request *rq)
{
__elv_rqhash_del(rq);
elv_rqhash_add(q, rq);
}
static struct request *elv_rqhash_find(struct request_queue *q, sector_t offset)
struct request *elv_rqhash_find(struct request_queue *q, sector_t offset)
{
struct elevator_queue *e = q->elevator;
struct hlist_node *next;

5
include/linux/elevator.h
View File

@ -108,6 +108,11 @@ struct elevator_type
#define ELV_HASH_BITS 6
void elv_rqhash_del(struct request_queue *q, struct request *rq);
void elv_rqhash_add(struct request_queue *q, struct request *rq);
void elv_rqhash_reposition(struct request_queue *q, struct request *rq);
struct request *elv_rqhash_find(struct request_queue *q, sector_t offset);
/*
* each queue has an elevator_queue associated with it
*/