loop: let set_capacity_revalidate_and_notify update the bdev size

There is no good reason to call revalidate_disk_size separately.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/loop.c

@@ -251,12 +251,8 @@ loop_validate_block_size(unsigned short bsize)
  */
 static void loop_set_size(struct loop_device *lo, loff_t size)
 {
-	struct block_device *bdev = lo->lo_device;
-
-	bd_set_nr_sectors(bdev, size);
-
-	if (!set_capacity_revalidate_and_notify(lo->lo_disk, size, false))
-		kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
+	if (!set_capacity_revalidate_and_notify(lo->lo_disk, size, true))
+		kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE);
 }
 
 static inline int