hashalloc
bno = (daddr_t)hashalloc(ip, cg, (long)bpref, size,
bno = (daddr_t)hashalloc(ip, cg, (long)bpref, request,
ino = (ino_t)hashalloc(pip, cg, (long)ipref, (int)mode,
static ino_t hashalloc();