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Re: [PATCH v2 1/3] sched: Avoid that __wait_on_bit_lock() hangs

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  Re: [PATCH v2 1/3] sched: Avoid that __wait_on_bit_lock() hangs Bart Van Assche <bvanassche@acm.org> - 2016-08-07 00:30 +0200
    Re: [PATCH v2 1/3] sched: Avoid that __wait_on_bit_lock() hangs Oleg Nesterov <oleg@redhat.com> - 2016-08-09 19:30 +0200

#1457392 — Re: [PATCH v2 1/3] sched: Avoid that __wait_on_bit_lock() hangs

On 08/05/16 16:09, Bart Van Assche wrote:
> If delivery of a signal and __wake_up_common() happen concurrently
> it is possible that the signal is delivered after __wake_up_common()
> woke up the affected task and before bit_wait_io() checks whether a
> signal is pending. Avoid that the next waiter is not woken up if this
> happens.

(replying to my own e-mail)

Although this patch works reliably in my tests, the above description 
does not explain the hang. I will resend this patch with a better 
description.

Bart.

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#1459020

On 08/06, Bart Van Assche wrote:
>
> Although this patch works reliably in my tests, the above description
> does not explain the hang. I will resend this patch with a better
> description.

Yes please, I'll ignore this series till then ;)

See also another patch I sent a minute ago.

Oleg.

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