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    SubjectRe: [PATCHv6 06/37] thp: handle write-protection faults for file THP
    On Thu, Jan 26, 2017 at 02:57:48PM +0300, Kirill A. Shutemov wrote:
    > For filesystems that wants to be write-notified (has mkwrite), we will
    > encount write-protection faults for huge PMDs in shared mappings.
    >
    > The easiest way to handle them is to clear the PMD and let it refault as
    > wriable.

    ... of course, the filesystem could implement ->pmd_fault, and then it
    wouldn't hit this case ...

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