Re: [PATCH v3] mm: make expand_downwards symmetrical toexpand_upwards

[James Bottomley]

On Thu, 2011-04-21 at 14:19 -0700, David Rientjes wrote:
> On Thu, 21 Apr 2011, Christoph Lameter wrote:
> 
> > In 32 bit configurations some architectures (like x86) provide nodes
> > that have only high memory. Slab allocators only handle normal memory.
> > SLAB operates in a kind of degraded mode in that case by falling back for
> > each allocation to the nodes that have normal memory.
> > 
> 
> Let's do this:
> 
>  - parisc: James has already queued "parisc: set memory ranges in 
>    N_NORMAL_MEMORY when onlined" for 2.6.39, so all he needs now is 
>    to merge a hybrid of the Kconfig changes requiring CONFIG_NUMA for 
>    CONFIG_DISCONTIGMEM from KOSAKI-san and myself which also fix the 
>    compile issues,

Not quite: if we go this route, we need to sort out our CPU scheduling
problem as well ... as I said, I don't think we've got all the necessary
numa machinery in place yet.

James


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