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[BLOCK] kill generic max_back_kb handling

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This patch kills max_back_kb handling from elv_dispatch_sort() and
kills max_back_kb field from struct request_queue.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Tejun Heo 2005-10-24 08:35:58 +02:00 committed by Jens Axboe
parent 4c9f783640
commit cb19833dcc
2 changed files with 1 additions and 6 deletions
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4
drivers/block/elevator.c
View File

@ -136,7 +136,6 @@ static int elevator_attach(request_queue_t *q, struct elevator_type *e,
q->elevator = eq; q->elevator = eq;
q->end_sector = 0; q->end_sector = 0;
q->boundary_rq = NULL; q->boundary_rq = NULL;
q->max_back_kb = 0;
if (eq->ops->elevator_init_fn) if (eq->ops->elevator_init_fn)
ret = eq->ops->elevator_init_fn(q, eq); ret = eq->ops->elevator_init_fn(q, eq);
@ -227,15 +226,12 @@ void elevator_exit(elevator_t *e)
void elv_dispatch_sort(request_queue_t *q, struct request *rq) void elv_dispatch_sort(request_queue_t *q, struct request *rq)
{ {
sector_t boundary; sector_t boundary;
unsigned max_back;
struct list_head *entry; struct list_head *entry;
if (q->last_merge == rq) if (q->last_merge == rq)
q->last_merge = NULL; q->last_merge = NULL;
boundary = q->end_sector; boundary = q->end_sector;
max_back = q->max_back_kb * 2;
boundary = boundary > max_back ? boundary - max_back : 0;
list_for_each_prev(entry, &q->queue_head) { list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry); struct request *pos = list_entry_rq(entry);

1
include/linux/blkdev.h
View File

@ -339,7 +339,6 @@ struct request_queue
*/ */
sector_t end_sector; sector_t end_sector;
struct request *boundary_rq; struct request *boundary_rq;
unsigned int max_back_kb;
/* /*
* Auto-unplugging state * Auto-unplugging state