spmc_owned_remove
int spmc_owned_remove(struct spmc __arena *spmc, u64 *val);
ret = spmc_owned_remove(spmc, &val);
ret = spmc_owned_remove(spmc, &val);
ret = spmc_owned_remove(spmc, &val);
ret = spmc_owned_remove(spmc, &newval);
ret = spmc_owned_remove(spmc, &newval);
ret = spmc_owned_remove(spmc, &val);