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    SubjectRe: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction
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    On Wed, 2008-06-18 at 17:24 -0700, Linus Torvalds wrote:
    >
    > On Wed, 18 Jun 2008, Jeremy Fitzhardinge wrote:
    > >
    > > Along the lines of:
    >
    > Hell no. There's a reason we have a special set_wrprotect() thing. We can
    > do it more efficiently on native hardware by just clearing the bit
    > atomically. No need to do the cmpxchg games.

    But we can't batch ...

    Ben.




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