Re: [patch 2/2] slub: enforce cpuset restrictions for cpu slabs

[Christoph Lameter]

On Tue, 3 Mar 2009, David Rientjes wrote:

> This change doesn't affect the fastpath in any significant way for systems
> that have not configured multiple cpusets; systems that have configured
> more than one cpuset may have specific NUMA locality requirements that
> slub is dismissing without this patch.

SLUB is also "dismissing" lots of other NUMA locality requirements since
it relies on the page allocators for this. SLUB does *not* realize memory
policy and/or cpuset support for individual objects. NUMA locality is
implemented only (aside from explicit requests of memory from a
certain node) when slab page allocations are performed.

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