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SubjectRe: [PATCH] Documenation/vm/numa
> + node_start_paddr  The starting physical address of the node. This doesn't
> + work really well as an unsigned long as it breaks for
> + ia32 with PAE for example. A more suitable solution would be
> + to record this as a Page Frame Number (pfn). This could be
> + trivially defined as (page_phys_addr >> PAGE\_SHIFT).

This looks fine.

> + Alternatively, it could be the struct page * index inside
> + mem_map.

But I'd just omit this last sentence ... that only works for machines
with a contig mem_map (not NUMA), and it's kind of an accidental
kludge that happens to work in some cases, not the proper definition
(what I originally posted was confusing).

I actually submitted a patch a couple of days ago to fix these to
a pfn instead. If that gets in, we can update the documentation then.

M.
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