NSPB
i * fs->fs_spc / NSPB(fs));
i * fsp->fs_spc / NSPB(fsp));
for (sblock.fs_cpc = NSPB(&sblock), i = sblock.fs_spc;
if ((sblock.fs_cpg * sblock.fs_spc) % NSPB(&sblock) != 0) {
rotblsize = sblock.fs_cpc * sblock.fs_spc / NSPB(&sblock);
sblock.fs_nsect > (1 << NBBY) * NSPB(&sblock)) {
bno = (cylno - pos) * fs->fs_spc / NSPB(fs);