Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0)

["John Anthony Kazos Jr." <jakj@j-a-k-j.com>]

> > Here a version of the patch that drops the WARN_ONs
> 
> And now all that's done, how about yet another random person stepping in and
> suggesting NIL or maybe NIL_PTR instead of ZERO_SIZE_PTR?
> 
> I understand the idea is that code need not necesarily care about zero sized
> allocation meaning it won't (generally) need to spell it out but it's still a
> dreadful name... :-(

The name says exactly what it is. It's not at all dreadful. If we're going 
to return a special value in the zero-size case (and in only that case) as 
a valid pointer instead of actually allocating one byte and treating it as 
zero, what we have is...a zero-size pointer. ZERO_SIZE_PTR is a pretty 
damn good name.
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