[CRIU] hang when restoring container with zombies

[Pavel Emelyanov]

On 07/20/2015 04:22 PM, Andrew Vagin wrote:

>>>
>>> I'll try to send a patch with WNOWAIT.
>>
>> I guess another option would be to rename zombie_lock to something
>> else, and just have the helpers block on that lock too. I can do
>> either, let me know which you prefer.
> 
> I vote for waitid. In this case we will able to remove zombie_lock.

I agree. But keep in mind, that the sigchild handler is also responsible
for picking up tasks that died due to some errors and propagating this
error back to criu main process.

-- Pavel