vd_backend_check_size
if (vd_backend_check_size(vd) != 0)
(void) vd_backend_check_size(vd);
status = vd_backend_check_size(vd);
if ((status = vd_backend_check_size(vd)) != 0) {
if ((status = vd_backend_check_size(vd)) != 0) {
if ((status = vd_backend_check_size(vd)) != 0) {
static int vd_backend_check_size(vd_t *vd);