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    SubjectRe: Hashing and directories
    Manfred Spraul wrote:
    > I'm not sure that this is the right way: It means that every exec() must
    > call dup_mmap(), and usually only to copy a few hundert bytes. But I
    > don't see a sane alternative. I won't propose to create a temporary file
    > in a kernel tmpfs mount ;-)

    Every exec creates a whole new mm anyway, after copying data from the
    old mm. The suggestion is to create the new mm before copying the data,
    and to copy the data from the old mm directly to the new one.

    -- Jamie
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