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    SubjectRe: dst_ifdown breaks infiniband?
    Hello!

    > > It should be cleared and we should be sure it will not be destroyed
    > > before quiescent state.
    >
    > I'm confused. didn't you say dst_ifdown is called after quiescent state?

    Quiescent state should happen after dst->neighbour is invalidated.
    And this implies that all the users of dst->neighbour check validity
    after dereference and do not use it after quiescent state.


    > This does not sound like something that's likely to be accepted in 2.6.21, right?
    >
    > Any simpler ideas?

    Well, if inifiniband destructor really needs to take that lock... no.
    Right now I do not see.

    Alexey
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