> > #eliminate delay no-ops in I/O; recommended on all but very old machines
> > #options DUMMY_NOPS
> >
> > It is commented out by default in GENERIC.  Should I be uncommenting
> > it?
>
> Yes, you should uncomment it. The effect is that in some i/o routines
> nops are replaced by a null definition and thus no nops are executed,
> which speeds up things a bit.

I also felt I had to scan the source before I was comfortable uncommenting
it.  Perhaps NO_NOPS might be clearer (or something similar)?

Mike.