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Date: Fri, 1 Jun 2007 20:41:41 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Christoph Lameter <clameter@....com> Cc: linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org, jeremy@...p.org Subject: Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0) > On Fri, 1 Jun 2007 18:37:46 -0700 (PDT) Christoph Lameter <clameter@....com> wrote: > > +#define ZERO_SIZE_PTR ((void *)16) Jeremy's point was a good one. The kernel _does_ use address-comparison to determine object-inequality in an unknown but non-zero number of places. It is of course unlikely that this will occur in conjunction with zero-sized objects, but who knows? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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