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nbd: tell the block layer that it is not a rotational device 

Then we can get rid of that manual elevator type fiddling.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
hifive-unleashed-5.1
Jens Axboe 2008-10-31 10:06:37 +01:00
parent b374d18a4b
commit 31dcfab0ae
1 changed files with 4 additions and 6 deletions
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10
drivers/block/nbd.c
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@ -722,7 +722,6 @@ static int __init nbd_init(void)
for (i = 0; i < nbds_max; i++) {
struct gendisk *disk = alloc_disk(1 << part_shift);
struct elevator_queue *old_e;
if (!disk)
goto out;
nbd_dev[i].disk = disk;
@ -736,11 +735,10 @@ static int __init nbd_init(void)
put_disk(disk);
goto out;
}
old_e = disk->queue->elevator;
if (elevator_init(disk->queue, "deadline") == 0 ||
elevator_init(disk->queue, "noop") == 0) {
elevator_exit(old_e);
}
/*
* Tell the block layer that we are not a rotational device
*/
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
}
if (register_blkdev(NBD_MAJOR, "nbd")) {