Re: [PATCH 2/4] oom: kill younger process first

[KOSAKI Motohiro]

(2011/05/11 8:31), David Rientjes wrote:
> On Tue, 10 May 2011, KOSAKI Motohiro wrote:
>
> > This patch introduces do_each_thread_reverse() and
> > select_bad_process() uses it. The benefits are two,
> > 1) oom-killer can kill younger process than older if
> > they have a same oom score. Usually younger process
> > is less important. 2) younger task often have PF_EXITING
> > because shell script makes a lot of short lived processes.
> > Reverse order search can detect it faster.
>
> I like this change, thanks!  I'm suprised we haven't needed a
> do_each_thread_reverse() in the past somewhere else in the kernel.
>
> Could you update the comment about do_each_thread() not being break-safe
> in the second version, though?

ok.

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