On Mon, Feb 27, 2006 at 02:30:02PM -0800, Christoph Lameter wrote:
> On Sun, 27 Feb 2006, Andi Kleen wrote:
>
> > Thinking about this more I think we need a __GFP_NOOOM for other
> > purposes too. e.g. the x86-64 IOMMU code tries to do similar
> > fallbacks and I suspect it will be hit by the OOM killer too.
>
> Isnt this also a constrained allocation? We could expand the check to also
> catch these types of restrictions and fail.
No, it uses the full fallback zone list of the target node, not a custom
one. Would be hard to detect without a flag.
Maybe __GFP_NORETRY is actually good enough for this purpose. Opinions?
-Andi
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