kernel_optimize_test/drivers/block/noop-iosched.c
Tejun Heo 98b11471d7 [PATCH] 04/05 remove last_merge handling from ioscheds
Remove last_merge handling from all ioscheds.  This patch
removes merging capability of noop iosched.

Signed-off-by: Tejun Heo <htejun@gmail.com>
2005-10-28 08:45:35 +02:00

46 lines
867 B
C

/*
* elevator noop
*/
#include <linux/blkdev.h>
#include <linux/elevator.h>
#include <linux/bio.h>
#include <linux/module.h>
#include <linux/init.h>
static void elevator_noop_add_request(request_queue_t *q, struct request *rq)
{
elv_dispatch_add_tail(q, rq);
}
static int elevator_noop_dispatch(request_queue_t *q, int force)
{
return 0;
}
static struct elevator_type elevator_noop = {
.ops = {
.elevator_dispatch_fn = elevator_noop_dispatch,
.elevator_add_req_fn = elevator_noop_add_request,
},
.elevator_name = "noop",
.elevator_owner = THIS_MODULE,
};
static int __init noop_init(void)
{
return elv_register(&elevator_noop);
}
static void __exit noop_exit(void)
{
elv_unregister(&elevator_noop);
}
module_init(noop_init);
module_exit(noop_exit);
MODULE_AUTHOR("Jens Axboe");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("No-op IO scheduler");