> > The main problem as far as I see is that while the pages can be quickly
> > free'd when required, the fragmentation worries me. It needs to be
> > integrated with the buddy system somehow (ie it should coalesce using the
> > buddy system, but we could then re-extract the page when required. Or
> > something).
>
> Don't we have enough fragmentation problems and fixes collected in the
> mm layer now to hint that maybe the right answer post 2.2 is to go from
> a buddy to zone allocator or similar.
Yes, we really should. With 2.1.91, we've effectively
shown that the buddy system doesn't work...
At least not for 'small' systems.
Rik.
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