Re: [RFC] [PATCH 8/9] memcg: remove page_cgroup pointer from memmap

[Dave Hansen]

On Fri, 2008-09-12 at 09:12 -0700, Balbir Singh wrote:
> 3. Integrate with sparsemem (last resort for performance), Dave Hansen suggested
> adding a mem_section member and using that.

I also suggested using the sparsemem *structure* without necessarily
using it for pfn_to_page() lookups.  That'll take some rework to
separate out SPARSEMEM_FOR_MEMMAP vs. CONFIG_SPARSE_STRUCTURE_FUN, but
it should be able to be prototyped pretty fast.

-- Dave

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