[PATCH 3.19.y-ckt 128/128] sched/wait: Fix signal handling in bit wait helpers

[Oleg Nesterov]

On 12/16, Kamal Mostafa wrote:
>
> 3.19.8-ckt12 -stable review patch.  If anyone has any objections, please let me know.
>
>
> commit 68985633bccb6066bf1803e316fbc6c1f5b796d6 upstream.

Please note that this patch is wrong without the next fix from Peter.

And in fact to me it is still not clear whether we really want to do
this, this probably needs more investigation.

Oleg.