Re: [PATCH 01/10] x86/mm/numa: Remove uninitialized_var() usage

From: Kees Cook
Date: Thu Jun 04 2020 - 18:39:37 EST


On Thu, Jun 04, 2020 at 11:39:05PM +0200, Thomas Gleixner wrote:
> Kees Cook <keescook@xxxxxxxxxxxx> writes:
> >> > -#define NODE_NOT_IN_PAGE_FLAGS
> >> > +#define NODE_NOT_IN_PAGE_FLAGS 1
> >>
> >> but if we ever lose the 1 then the above will silently compile the code
> >> within the IS_ENABLED() section out.
> >
> > That's true, yes. I considered two other ways to do this:
> >
> > 1) smallest patch, but more #ifdef:
> > 2) medium size, weird style:
> >
> > and 3 is what I sent: biggest, but removes #ifdef
> >
> > Any preference?
>
> From a readbility POV I surely prefer #3. i"m just wary. Add a big fat
> comment to the define might mitigate that, hmm?

Sure! I'll add it.

--
Kees Cook