block: pass a request_queue to __blk_alloc_disk

Pass in a request_queue and assign disk->queue in __blk_alloc_disk to
ensure struct gendisk always has a valid ->queue pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210816131910.615153-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 8ac30c3..2ca7e7c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3143,12 +3143,11 @@ struct gendisk *__blk_mq_alloc_disk(struct blk_mq_tag_set *set, void *queuedata,
 	if (IS_ERR(q))
 		return ERR_CAST(q);
 
-	disk = __alloc_disk_node(set->numa_node, lkclass);
+	disk = __alloc_disk_node(q, set->numa_node, lkclass);
 	if (!disk) {
 		blk_cleanup_queue(q);
 		return ERR_PTR(-ENOMEM);
 	}
-	disk->queue = q;
 	return disk;
 }
 EXPORT_SYMBOL(__blk_mq_alloc_disk);