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    SubjectRe: [PATCH][ATM] use rtnl_{lock,unlock} during device operations (take 2)
    In message <>,Werner Almesberger writes:
    >The data plane, yes. But the control/configuration plane is
    >synchronous. And it also makes sure that the driver stops
    >doing asynchronous things when removing a VCC.

    i forgot to mention that this is difficult with the way most of the
    atm drivers are written. in smp kernels, you cant disable interrupts
    across all processors to keep the drivers bottom halves from running.
    (ok, you could but it would be very naughty). if the bottom halves were
    tasklets this would be easy, but most drivers would need converted.
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