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SubjectRe: [RFC PATCH v2 5/9] mm, pgtable: Add a refcount to PTE table
On Tue, Sep 27, 2022 at 05:59:16PM +0000, Nadav Amit wrote:
> Is there some assumption that pmd_get_pte() would not be called between the
> page_ref_add_unless() and cow_pte_fallback()?
>
> Hard to know without comments or context.

Yes.
It is one of the corner case that I need to handle it.

Thanks,
Chih-En Lin

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