Re: [PATCH v2 0/9] Remove spin_unlock_wait()

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On Fri, Jul 07, 2017 at 12:33:49PM +0200, Ingo Molnar wrote:

>  [1997/04] v2.1.36:
> 
>       the spin_unlock_wait() primitive gets introduced as part of release()


Whee, that goes _way_ further back than I thought it did :-)

>  [2017/07] v4.12:
> 
>       wait_task_inactive() is still alive and kicking. Its poll loop has
>       increased in complexity, but it still does not use spin_unlock_wait()
> 

I've tried 'fixing' that wait_task_inactive() thing a number of times,
but always failed :/ That is very nasty code indeed.
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