linux-master/block/elevator.c

3  *  Block device elevator/IO-scheduler.
9  * Split the elevator a bit so that it is possible to choose a different
23  * - completely modularize elevator setup and teardown
41 #include "elevator.h"
63 	struct elevator_queue *e = q->elevator;
98  * Return true if the elevator @e's name or alias matches @name.
161 	struct elevator_queue *e = q->elevator;
188 	struct elevator_queue *e = q->elevator;
204 	struct elevator_queue *e = q->elevator;
279 	struct elevator_queue *e = q->elevator;
373 	struct elevator_queue *e = q->elevator;
387 	struct elevator_queue *e = q->elevator;
398 	struct elevator_queue *e = q->elevator;
408 	struct elevator_queue *e = q->elevator;
465 	struct elevator_queue *e = q->elevator;
490 	struct elevator_queue *e = q->elevator;
583  * Get the first elevator providing the features required by the request queue.
584  * Default to "none" if no matching elevator is found.
607  * For a device queue that has no required features, use the default elevator
608  * settings. Otherwise, use the first elevator available matching the required
609  * features. If no suitable elevator is find or if the chosen elevator
610  * initialization fails, fall back to the "none" elevator (no elevator).
622 	if (unlikely(q->elevator))
647 		pr_warn("\"%s\" elevator initialization failed, "
669 	if (q->elevator) {
707 	q->elevator = NULL;
728 		if (q->elevator)
733 	if (q->elevator && elevator_match(q->elevator->type, elevator_name))
766 	struct elevator_queue *eq = q->elevator;
773 	if (!q->elevator) {
819 	pr_warn("Kernel parameter elevator= does not have any effect anymore.\n"
824 __setup("elevator=", elevator_setup);