__vringh_complete
return __vringh_complete(vrh, &used, 1, putu16_iotlb, putused_iotlb);
return __vringh_complete(vrh, &used, 1, putu16_user, putused_user);
return __vringh_complete(vrh, used, num_used,
return __vringh_complete(vrh, &used, 1, putu16_kern, putused_kern);