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SubjectRe: [PATCH 9 of 20] ipath - char devices for diagnostics and lightweight subnet management
    Bryan> Probably not much.  The motivation was to ensure that if it
Bryan> got incremented during an iteration, whoever was iterating
Bryan> would see the update in a timely fashion.

But as far as I can see, you never do atomic_inc() -- only
atomic_set() under a spinlock.
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