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SubjectRe: assert/crash in __rmqueue() when enabling CONFIG_NUMA

* Andi Kleen <ak@suse.de> wrote:

> > > The problem is that nobody regression tests it. So even if you fix it
> > > now it will be likely broken again in a few months.
> >
> > We can add a box to the test.kernel.org harness easily enough, and
> > it will show up with an eerie red glow.
>
> Single box is not enough - there are many possible combinations (e.g.
> Opteron NUMA, IBM NUMA, no NUMA small box, big box with weird mappings
> etc.). Basically you would need a real tester base.

nah. And the fact that i could boot this on a non-NUMA box already
unearthed a weakness in the buddy allocator. (it should have much
clearer asserts about mis-sized zones - it's not the first time we had
them and they are hard to debug) So consider this a debugging feature.
It also found other bugs, so even if nobody but me uses it, it's useful.

ingo
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