Commit cb19833d authored by Tejun Heo's avatar Tejun Heo Committed by Jens Axboe

[BLOCK] kill generic max_back_kb handling

This patch kills max_back_kb handling from elv_dispatch_sort() and
kills max_back_kb field from struct request_queue.
Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@suse.de>
parent 4c9f7836
......@@ -136,7 +136,6 @@ static int elevator_attach(request_queue_t *q, struct elevator_type *e,
q->elevator = eq;
q->end_sector = 0;
q->boundary_rq = NULL;
q->max_back_kb = 0;
if (eq->ops->elevator_init_fn)
ret = eq->ops->elevator_init_fn(q, eq);
......@@ -227,16 +226,13 @@ void elevator_exit(elevator_t *e)
void elv_dispatch_sort(request_queue_t *q, struct request *rq)
{
sector_t boundary;
unsigned max_back;
struct list_head *entry;
if (q->last_merge == rq)
q->last_merge = NULL;
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) {
struct request *pos = list_entry_rq(entry);
......
......@@ -339,7 +339,6 @@ struct request_queue
*/
sector_t end_sector;
struct request *boundary_rq;
unsigned int max_back_kb;
/*
* Auto-unplugging state
......
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