Re: [PATCH 1/3] PM: Disable OOM killer during system-wide powertransitions

From: Pavel Machek
Date: Sun May 03 2009 - 05:44:28 EST



> > Does the same apply to suspending? If so, why?
>
> Because I think it doesn't work anyway. User space processes are frozen and
> effectively in TASK_UNINTERRUPTIBLE, so they won't be killed.
>
> > I think this is an OK change, as long as the only thing which is
> > allocating memory is hibernation itself. If random processes are still
> > doing random memory allocations at this time then their failed memory
> > allocation could be just as fatal as an oom-killing. Moreso if they're
> > s/bin/init or whatever.
>
> At this point all of the user space tasks are frozen.

Well, many kernel threads still remain active. But it is true that OOM
killer is unlikely to help.

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/