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SubjectRe: [PATCH 2/5] mm: page_owner: add support for splitting to any order in split page_owner.
Hello.

On Mon, Mar 20, 2023 at 08:48:26PM -0400, Zi Yan <zi.yan@sent.com> wrote:
> @@ -5746,8 +5746,8 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order,
> struct page *page = virt_to_page((void *)addr);
> struct page *last = page + nr;
>
> - split_page_owner(page, 1 << order);
> - split_page_memcg(page, 1 << order);
> + split_page_owner(page, 1 << order, 1);
> + split_page_memcg(page, 1 << order, 1);

I think here should be

> + split_page_owner(page, order, 0);
> + split_page_memcg(page, 1 << order, 1);

because I was wondering why split_page_memcg() doesn't use orders too?
(E.g. it wouldn't work well if nr % new_new != 0).

Thanks,
Michal
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