linux-kernel - [PATCH 0/2] mm, oom: fix oom

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Message-Id: <20170807113839.16695-1-mhocko@kernel.org>
Date:   Mon,  7 Aug 2017 13:38:37 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Andrea Argangeli <andrea@...nel.org>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Oleg Nesterov <oleg@...hat.com>,
        Wenwei Tao <wenwei.tww@...baba-inc.com>, <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/2] mm, oom: fix oom_reaper fallouts

Hi,
there are two issues this patch series attempts to fix. First one is
something that has been broken since MMF_UNSTABLE flag introduction
and I guess we should backport it stable trees (patch 1). The other
issue has been brought up by Wenwei Tao and Tetsuo Handa has created
a test case to trigger it very reliably. I am not yet sure this is a
stable material because the test case is rather artificial. If there is
a demand for the stable backport I will prepare it, of course, though.

I hope I've done the second patch correctly but I would definitely
appreciate some more eyes on it. Hence CCing Andrea and Kirill. My
previous attempt with some more context was posted here
http://lkml.kernel.org/r/20170803135902.31977-1-mhocko@kernel.org

My testing didn't show anything unusual with these two applied on top of
the mmotm tree.