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    SubjectRe: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction
    On Mon, 16 Jun 2008, Linus Torvalds wrote:
    > On Mon, 16 Jun 2008, Jeremy Fitzhardinge wrote:
    > >
    > > ptep_modify_prot_start() returns the current pte value, and puts the
    > > pte entry into a state where either the hardware will not update the
    > > pte, or if it does, the updates will be preserved on commit.
    > >
    > > ptep_modify_prot_commit() writes back the updated pte, makes sure that
    > > any hardware updates made since ptep_modify_prot_start() are
    > > preserved.
    >
    > Ok, I'm fine with this now that it's renamed to be clearly about just
    > protection bits.
    >
    > So
    >
    > Acked-by: Linus Torvalds <torvalds@linux-foundation.org>

    And seems very reasonable (and exceptionally well described) to me too.

    Acked-by: Hugh Dickins <hugh@veritas.com>


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