drbd_bump_write_ordering
void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backing_dev *bdev,
drbd_bump_write_ordering(device->resource, NULL, WO_BDEV_FLUSH);
drbd_bump_write_ordering(device->resource, device->ldev, WO_BDEV_FLUSH);
drbd_bump_write_ordering(connection->resource, NULL, WO_DRAIN_IO);