lkml.org 
[lkml]   [2014]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Patch v4 1/2] freezer: check OOM kill while being frozen
On Thu 11-09-14 16:26:56, Rafael J. Wysocki wrote:
> On Thursday, September 11, 2014 04:04:48 PM Michal Hocko wrote:
> > On Thu 11-09-14 16:17:56, Rafael J. Wysocki wrote:
> > [...]
> > > And I'm still wondering if the OOM killer may be made avoid killing frozen
> > > tasks.
> >
> > This is really tricky. OOM killer aims at the biggest memory hog. We
> > shouldn't ignore it just because it hides into the fridge... So even
> > if we "fix" oom killer to ignore frozen tasks (which is inherently
> > racy btw.) then we have a potential problem of freezer abuse (e.g. in
> > container environments). So I strongly believe that the OOM killer has
> > to be able to kill a frozen tasks.
>
> OK
>
> Is the OOM killer the only place where TIF_MEMDIE is set?

Yes. To be precise, lowmemorykiller (staging android thingy), global OOM
killer and memcg OOM killer. Any other users would be an abuse.

--
Michal Hocko
SUSE Labs


\
 
 \ /
  Last update: 2014-09-11 16:41    [W:0.722 / U:0.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site