linux-kernel - deadline ALWAYS default for dasd devices(s390) ?

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Message-ID: <4BD58848.8090205@gmail.com>
Date:	Mon, 26 Apr 2010 14:34:16 +0200
From:	Xose Vazquez Perez <xose.vazquez@...il.com>
To:	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: deadline ALWAYS default for dasd devices(s390) ?

hi,

why is it FORCED ? bypassing a GLOBAL setting and also the kernel command line !!!

drivers/s390/block/dasd.c

/*
 * Allocate and initialize request queue and default I/O scheduler.
 */
static int dasd_alloc_queue(struct dasd_block *block)
{
	int rc;

	block->request_queue = blk_init_queue(do_dasd_request,
					       &block->request_queue_lock);
	if (block->request_queue == NULL)
		return -ENOMEM;

	block->request_queue->queuedata = block;

	elevator_exit(block->request_queue->elevator);
	block->request_queue->elevator = NULL;
	rc = elevator_init(block->request_queue, "deadline");
	if (rc) {
		blk_cleanup_queue(block->request_queue);
		return rc;
	}
	return 0;
}


-thanks-

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