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    SubjectRe: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction

    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.


    Acked-by: Linus Torvalds <>

    for what it's worth.


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