Re: mm, oom_reaper: How to handle race with oom_killer_disable() ?

[Michal Hocko]

On Wed 22-06-16 14:08:43, Michal Hocko wrote:
> On Wed 22-06-16 19:57:17, Tetsuo Handa wrote:
> > Michal Hocko wrote:
> [...]
> > > That being said I guess the patch to try_to_freeze_tasks after
> > > oom_killer_disable should be simple enough to go for now and stable
> > > trees and we can come up with something less hackish later. I do not
> > > like the fact that oom_killer_disable doesn't act as a full "barrier"
> > > anymore.
> > > 
> > > What do you think?
> > 
> > I'm OK with calling try_to_freeze_tasks(true) again for Linux 4.6 and 4.7 kernels.
> 
> OK, I will resend the patch CC Rafael and stable.

Ohh, I've just realized that 449d777d7ad6 ("mm, oom_reaper: clear
TIF_MEMDIE for all tasks queued for oom_reaper") went in in this merge
window. So I've asked to push it to the next 4.7 rc.
-- 
Michal Hocko
SUSE Labs