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    SubjectRe: [PATCH] in-core AFS multiplexor and PAG support
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    >>>>> " " == Linus Torvalds <torvalds@transmeta.com> writes:

    > Put another way: you'd usually add the PAG's at filesystem
    > _mount_ time, no? And at that point you'd usually want to add
    > it "retroactively" to the session processes that caused the
    > mount to happen, no? Not just to the children of the mount.

    Think of PAGs as "session"-style management of credentials. If you
    want to add/remove a credential without sharing that operation with
    all the other processes that are currently in the same session/PAG
    then you change PAGs.
    Otherwise, the credential operation affects all processes in the same
    PAG.

    Under normal circumstances, changing real uid/gid should involve
    changing your PAG, but it doesn't necessarily have to do so.

    Cheers,
    Trond
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