On Tue 27-11-12 09:05:30, KAMEZAWA Hiroyuki wrote:
[...]

As a short term fix, I think this patch will work enough and seems simple enough.
Acked-by: KAMEZAWA Hiroyuki <redacted>

Thanks!
If Johannes is also ok with this for now I will resubmit the patch to
Andrew after I hear back from the reporter.
 

Reading discussion between you and Johannes, to release locks, I understand
the memcg need to return "RETRY" for a long term fix. Thinking a little,
it will be simple to return "RETRY" to all processes waited on oom kill queue
of a memcg and it can be done by a small fixes to memory.c.

I wouldn't call it simple but it is doable.
-- 
Michal Hocko
SUSE Labs