diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index b220c686089d82b5ffc41eada6efd59c7f7ca7e5..2d19f0cc47f272c5ae4f96ee97ea34a1bce5a407 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -338,12 +338,18 @@ static void do_blkif_request(struct request_queue *rq) static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size) { struct request_queue *rq; + elevator_t *old_e; rq = blk_init_queue(do_blkif_request, &blkif_io_lock); if (rq == NULL) return -1; - elevator_init(rq, "noop"); + old_e = rq->elevator; + if (IS_ERR_VALUE(elevator_init(rq, "noop"))) + printk(KERN_WARNING + "blkfront: Switch elevator failed, use default\n"); + else + elevator_exit(old_e); /* Hard sector size and max sectors impersonate the equiv. hardware. */ blk_queue_hardsect_size(rq, sector_size);