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

Pavel Machek
2009-05-03T09:47:18Z

> > 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
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