HTABLE_MASK
uint32_t hv = (inum ^ (inum >> 16)) & HTABLE_MASK;
hv = (hv ^ (hv >> 16)) & HTABLE_MASK;
int hv = (((intptr_t)topo ^ (intptr_t)iscan) >> 6) & HTABLE_MASK;
int hv = ((intptr_t)topo ^ (bref->data_off >> 8)) & HTABLE_MASK;
hv = (bref->key ^ (bref->key >> 16)) & HTABLE_MASK;
HTABLE_MASK;
hv = (ip->meta.inum ^ (ip->meta.inum >> 16)) & HTABLE_MASK;
HTABLE_MASK;
uint32_t hv = (inum ^ (inum >> 16)) & HTABLE_MASK;
int hv = (bref->data_off >> 10) & HTABLE_MASK;
int hv = (bref->data_off >> 10) & HTABLE_MASK;