INOHASH
itp->t_next = inotab[INOHASH(ctxp->ino)];
inotab[INOHASH(ctxp->ino)] = itp;
for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next)
for (ip = isohashtbl[INOHASH(dev, inum)]; ip; ip = ip->i_next) {
ipp = &isohashtbl[INOHASH(ip->i_dev, ip->i_number)];
ipp = INOHASH(dev, inum);
ipp = INOHASH(dev, inum);