2010-04-26 12:34:25

by Xose Vazquez Perez

[permalink] [raw]
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-

--
?All? muevan feroz guerra, ciegos reyes por un palmo m?s de tierra;
que yo aqu? tengo por m?o cuanto abarca el mar brav?o, a quien nadie
impuso leyes. Y no hay playa, sea cualquiera, ni bandera de esplendor,
que no sienta mi derecho y d? pecho a mi valor.?