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SubjectRe: sem_lock() vs qspinlocks
On Thu, May 19, 2016 at 10:39:26PM -0700, Davidlohr Bueso wrote:
> In addition, this makes me wonder if queued_spin_is_locked() should then be:
>
> - return atomic_read(&lock->val);
> + return atomic_read(&lock->val) & _Q_LOCKED_MASK;
>
> And avoid considering pending waiters as locked.

Probably

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