Re: [Patch v4 1/2] freezer: check OOM kill while being frozen

[Michal Hocko]

On Tue 09-09-14 07:50:12, Tejun Heo wrote:
> Hello,
> 
> On Tue, Sep 09, 2014 at 12:48:28AM +0200, Rafael J. Wysocki wrote:
> > Well, not exactly from anywhere.  Just from where try_to_freeze() is called
> > I suppose?
> 
> Yeap, anywhere try_to_freeze() may be called.
> 
> > Which means that if this is a user space task, it won't to a lot before dying,
> > will it?
> 
> Userland tasks aren't likely to a lot of damages before dying but then
> again there's no guarantee.  As it currently stands, try_to_freeze()
> can be anywhere.

But OOM killer doesn't kill kernel threads as they do not own any
memory. So the check should be safe, no?
-- 
Michal Hocko
SUSE Labs
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