Re: [PATCH] page_alloc: skip cpuset enforcement for lower zone allocations (v5)

From: Andi Kleen
Date: Fri May 30 2014 - 17:18:39 EST


On Fri, May 30, 2014 at 08:50:56AM -0500, Christoph Lameter wrote:
> On Thu, 29 May 2014, David Rientjes wrote:
>
> > When I said that my point about mempolicies needs more thought, I wasn't
> > expecting that there would be no discussion -- at least _something_ that
> > would say why we don't care about the mempolicy case.
>
> Lets get Andi involved here too.

I'm not fully sure about the use case for this. On the NUMA systems
I'm aware of usually only node 0 has <4GB, so mem policy
is pointless.

But anyways it seems ok to me to ignore mempolicies. Mempolicies
are primarily for user space, which doesn't use GFP_DMA32.

-ANdi
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