On Wed, 10 Jun 2009, Pekka Enberg wrote:
> > Aha, SLUB thinks the minimum order for 4096 is 1. I guess you have
> > CONFIG_SLUB_DEBUG enabled? If yes, something like to following should
> > help. Christoph, are you okay with this patch?
On Thu, 2009-06-11 at 10:41 -0400, Christoph Lameter wrote:
> He likely has CONFIG_SLUB_DEBUG_ON set which enables debugging and thus
> needs more than the payload for metadata.
Yup. I suspect a lot of people who are doing _testing_ enable that. If
you're unhappy with my patch (the get_order one which shouldn't affect
that many caches anyway), any suggestions how to fix this up? It seems
that the wireless stack at least does quite a few kmalloc(4096)
allocations.
We can probably switch back to page allocator pass-through in the near
future (when Mel's patches are in) but we need a fix for -stable.
Pekka
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