drbd: use set_capacity_and_notify

Use set_capacity_and_notify to set the size of both the disk and block
device.  This also gets the uevent notifications for the resize for free.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/drbd/drbd_main.c

@@ -2036,8 +2036,7 @@ void drbd_set_my_capacity(struct drbd_device *device, sector_t size)
 {
 	char ppb[10];
 
-	set_capacity(device->vdisk, size);
-	revalidate_disk_size(device->vdisk, false);
+	set_capacity_and_notify(device->vdisk, size);
 
 	drbd_info(device, "size = %s (%llu KB)\n",
 		ppsize(ppb, size>>1), (unsigned long long)size>>1);
@@ -2068,8 +2067,7 @@ void drbd_device_cleanup(struct drbd_device *device)
 	}
 	D_ASSERT(device, first_peer_device(device)->connection->net_conf == NULL);
 
-	set_capacity(device->vdisk, 0);
-	revalidate_disk_size(device->vdisk, false);
+	set_capacity_and_notify(device->vdisk, 0);
 	if (device->bitmap) {
 		/* maybe never allocated. */
 		drbd_bm_resize(device, 0, 1);