Re: [PATCH] oom: OOM-Killed process don't invoke pagefault-oom

From: Nick Piggin
Date: Mon Jan 18 2010 - 02:30:08 EST

On Fri, Jan 15, 2010 at 03:21:40PM +0900, KOSAKI Motohiro wrote:
> > Hi,
> >
> > I don't think this should be required, because the oom killer does not
> > kill a new task if there is already one in memdie state.
> >
> > If you have any further tweaks to the heuristic (such as a fatal signal
> > pending), then it should probably go in select_bad_process() or
> > somewhere like that.
> I see, I misunderstood. very thanks.

Well, it *might* be a good idea to check for fatal signal pending
similar your patch. Because I think there could be large latency between
the signal and the task moving to exit state if the process is waiting
uninterruptible in the kernel for a while.

But if you do it in select_bad_process() then it would work for all
classes of oom kill.


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