[RFC/PATCH RESEND -next 12/21] mm: util: move krealloc/kzfree to slab_common.c

[Christoph Lameter]

On Wed, 9 Jul 2014, Andrey Ryabinin wrote:

> To avoid false positive reports in kernel address sanitizer krealloc/kzfree
> functions shouldn't be instrumented. Since we want to instrument other
> functions in mm/util.c, krealloc/kzfree moved to slab_common.c which is not
> instrumented.
>
> Unfortunately we can't completely disable instrumentation for one function.
> We could disable compiler's instrumentation for one function by using
> __atribute__((no_sanitize_address)).
> But the problem here is that memset call will be replaced by instumented
> version kasan_memset since currently it's implemented as define:

Looks good to me and useful regardless of the sanitizer going in.

Acked-by: Christoph Lameter <cl at linux.com>