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    SubjectRe: Question regarding mutex locking
    El Tue, Nov 27, 2007 at 10:37:00PM -0600 Larry Finger ha dit:

    > If a particular routine needs to lock a mutex, but it may be entered with that mutex already locked,
    > would the following code be SMP safe?
    >
    > hold_lock = mutex_trylock()
    >
    > ...
    >
    > if (hold_lock)
    > mutex_unlock()

    this is wont work, a mutex must not be released from another
    context than the one that acquired it.

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    Matthias Kaehlcke
    Linux Application Developer
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