Re: [RFC] NUMA : could we introduce virt_to_nid() ?

[Pekka Enberg]

On 3/23/07, Eric Dumazet <dada1@xxxxxxxxxxxxx> wrote:
> Checking Christoph quicklist implementation, I found the same cache miss in
> free() than SLAB has.
>
> /* common implementation *
> int virt_to_nid(const void *addr)
> {
>         struct page *page = virt_to_page(addr);
>         return page_to_nid(page);
> }
>
> On some platforms (x86_64 for example), could we have a better implementation,
> not accessing struct page, but using phys_to_nid() ?

Sounds good to me. At least cache_free_alien() in mm/slab.c to should
be converted to use it.
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