Re: [RFC] locking/rwsem: Avoid issuing wakeup before setting the reader waiter to nil

Peter Zijlstra
2018-11-29T18:13:27Z

On Thu, Nov 29, 2018 at 12:58:26PM -0500, Waiman Long wrote:
> OK, you convinced me. However, that can still lead to anonymous wakeups
> that can be problematic if it happens in certain places. Should we try
> to reduce anonymous wakeup as much as possible?

No, we should at all times accept and expect spurious wakeups.