Messages in this thread | | | Date | Wed, 1 Jun 2016 12:39:57 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v1] mm: thp: check pmd_trans_unstable() after split_huge_pmd() |
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On Wed, Jun 01, 2016 at 09:36:40AM +0900, Naoya Horiguchi wrote: > split_huge_pmd() doesn't guarantee that the pmd is normal pmd pointing to > pte entries, which can be checked with pmd_trans_unstable().
Could you be more specific on when we don't have normal ptes after split_huge_pmd? Race with other thread? DAX?
I guess we can modify split_huge_pmd() to return if the pmd was split or not.
-- Kirill A. Shutemov
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