UMEM_REAP_DONE
umem_reaping = UMEM_REAP_DONE;
if (umem_ready != UMEM_READY || umem_reaping != UMEM_REAP_DONE ||
if (umem_reaping != UMEM_REAP_DONE || gethrtime() < umem_reap_next) {
umem_reaping = UMEM_REAP_DONE;
case UMEM_REAP_DONE:
umem_reaping = UMEM_REAP_DONE;
ASSERT(umem_reaping == UMEM_REAP_DONE ||