LEAF_HASH
#define LEAF_HASH_ENTPTR(l, h) (&(l)->l_phys->l_hash[LEAF_HASH(l, h)])
for (chunk = l->l_hash[LEAF_HASH(blksft, h)];
for (uint16_t lh = LEAF_HASH(l, h); lh <= bestlh; lh++) {
#define LEAF_HASH_ENTPTR(l, h) (&zap_leaf_phys(l)->l_hash[LEAF_HASH(l, h)])