NPCHASH
struct pchead pcfhead[NPCHASH];
struct pchead pcdhead[NPCHASH];
for (hp = pcdhead; hp < &pcdhead[NPCHASH]; hp++) {
for (hp = pcfhead; fsp->pcfs_frefs && hp < &pcfhead[NPCHASH]; hp++) {
for (i = 0; i < NPCHASH; i++) {
while (hp < & pcfhead [ NPCHASH ]) {
#if NPCHASH == 1
#define PCFHASH(FSP, BN, O) (((unsigned)FSP + BN + O) % NPCHASH)
#define PCDHASH(FSP, SC) (((unsigned)FSP + SC) % NPCHASH)