Messages in this thread | | | Date | Mon, 4 Jun 2007 22:13:30 +0300 | From | "Pekka Enberg" <> | Subject | Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0) |
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Hi Christoph,
On 6/4/07, Christoph Lameter <clameter@sgi.com> wrote: > /* > - * We should return 0 if size == 0 (which would result in the > - * kmalloc caller to get NULL) but we use the smallest object > - * here for legacy reasons. Just issue a warning so that > - * we can discover locations where we do 0 sized allocations. > + * The behavior for zero sized allocs changes. We no longer > + * allocate memory but return ZERO_SIZE_PTR. > + * WARN so that people can review and fix their code. > */ > WARN_ON_ONCE(size == 0);
I thought the whole point of this patch was to get rid of the WARN_ON as you will get a nice oops if you dereference the pointer? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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