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    SubjectRe: [PATCH] perf lock: Fix state machine to recognize lock sequence
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    On Wed, 2010-04-21 at 03:26 +0200, Frederic Weisbecker wrote:
    > The max lockdep depth may
    > change in the future, or become variable, so we can't relay on that.
    >
    Change, possible, variable unlikely, you need a memory allocation to
    extend it, and memory allocation takes locks, which is not a nice thing
    to do in the middle of lockdep.



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