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    SubjectRe: [PATCH] [CPU-HOTPLUG] convert cpucontrol to be a rwsem
    On Tue, 2004-11-02 at 23:28 +0100, Dominik Brodowski wrote:
    > Except that we don't want to (and can't[*]) disable preemption in the
    > cpufreq case. Therefore, we __need__ to disable CPU hotplug specifically,
    > and not meddle with other issues like preemption, scheduling, CPUs which are
    > in the allowed_map, and so on. So back to the original patch: Rusty, do you
    > agree with it?

    Sure. I consider it a trivial change. The reason it wasn't a rwsem in
    the first place is that there weren't many places which needed to grab
    it, and none were time-sensitive.

    A bad analogy is like a leaky screwdriver -- Richard Braakman

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