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[PATCH] generic dispatch fixes

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- Split elv_dispatch_insert() into two functions
- Rename rq_last_sector() to rq_end_sector()

Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Jens Axboe
2005-10-20 16:37:00 +02:00
committed by Jens Axboe
parent 8922e16cf6
commit 1b47f531e2
3 changed files with 27 additions and 23 deletions
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13
include/linux/blkdev.h
View File

@@ -337,7 +337,7 @@ struct request_queue
/*
* Dispatch queue sorting
*/
sector_t last_sector;
sector_t end_sector;
struct request *boundary_rq;
unsigned int max_back_kb;
@@ -624,6 +624,17 @@ static inline void blkdev_dequeue_request(struct request *req)
elv_dequeue_request(req->q, req);
}
/*
* This should be in elevator.h, but that requires pulling in rq and q
*/
static inline void elv_dispatch_add_tail(struct request_queue *q,
struct request *rq)
{
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
list_add_tail(&rq->queuelist, &q->queue_head);
}
/*
* Access functions for manipulating queue properties
*/

4
include/linux/elevator.h
View File

@@ -79,7 +79,7 @@ struct elevator_queue
/*
* block elevator interface
*/
extern void elv_dispatch_insert(request_queue_t *, struct request *, int);
extern void elv_dispatch_sort(request_queue_t *, struct request *);
extern void elv_add_request(request_queue_t *, struct request *, int, int);
extern void __elv_add_request(request_queue_t *, struct request *, int, int);
extern int elv_merge(request_queue_t *, struct request **, struct bio *);
@@ -140,4 +140,6 @@ enum {
ELV_MQUEUE_MUST,
};
#define rq_end_sector(rq) ((rq)->sector + (rq)->nr_sectors)
#endif