Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever

From: Tetsuo Handa
Date: Thu Jul 06 2017 - 06:48:59 EST

Michal Hocko wrote:
> On Sat 01-07-17 20:43:56, Tetsuo Handa wrote:
> > Michal Hocko wrote:
> [...]
> > > It is really hard to pursue this half solution when there is no clear
> > > indication it helps in your testing. So could you try to test with only
> > > this patch on top of the current linux-next tree (or Linus tree) and see
> > > if you can reproduce the problem?
> >
> > With this patch on top of next-20170630, I no longer hit this problem.
> > (Of course, this is because this patch eliminates the infinite loop.)
> I assume you haven't seen other negative side effects, like unexpected
> OOMs etc... Are you willing to give your Tested-by?

I didn't see other negative side effects.

Tested-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>

We need long time for testing this patch at linux-next.git (and I give up
this handy bug for finding other bugs under almost OOM situation).