atomic_intr_cond_try
if ((error = atomic_intr_cond_try(&s->interlock)) == 0) {
if (atomic_intr_cond_try(&s->interlock) == 0) {
if (atomic_intr_cond_try(&s->interlock) == 0) {
atomic_intr_cond_try(&s->interlock) == 0) {
if (atomic_intr_cond_try(&s->interlock) == 0) {