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    SubjectRe: [announce] "kill the Big Kernel Lock (BKL)" tree
    > > So you just stick unlock_kernel()/lock_kernel() around the call
    > > to TTY (or similar to the entry points)
    > >
    >
    > ... assuming that the ISDN code doesn't assume lock continuity across
    > the TTY call.

    And procfs and between the tty and the net config code and ...

    Keeping the BKL just in legacy places doesn't work. A counting mutex (ie
    one you can self multi-lock) might be very useful to fix some of these
    however as once we push it down to the point of being a driver specific
    lock we can just give it a driver mutex


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