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Groups > linux.kernel > #1411041
| From | "Kirill A. Shutemov" <kirill@shutemov.name> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v1] mm: thp: check pmd_trans_unstable() after split_huge_pmd() |
| Date | 2016-06-01 11:50 +0200 |
| Message-ID | <rFaWK-6IP-21@gated-at.bofh.it> (permalink) |
| References | <rF2mu-1c3-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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[PATCH v1] mm: thp: check pmd_trans_unstable() after split_huge_pmd() Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2016-06-01 02:40 +0200
Re: [PATCH v1] mm: thp: check pmd_trans_unstable() after split_huge_pmd() "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-06-01 11:50 +0200
Re: [PATCH v1] mm: thp: check pmd_trans_unstable() after split_huge_pmd() Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2016-06-02 02:40 +0200
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