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

[Bart Van Assche]

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.