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SubjectRe: [RFC 1/3] Framework for accurate node based statistics
> +static inline void mod_node_page_state(int node, enum node_stat_item item, int delta)
> +{
> + vm_stat_diff[get_cpu()][node][item] += delta;
> + put_cpu();

Instead of get/put_cpu I would use a local_t. This would give much better code
on i386/x86-64. I have some plans to port over all the MM statistics counters
over to local_t, still stuck, but for new code it should be definitely done.

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