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Message-ID: <20180423160920.GX17484@dhcp22.suse.cz> Date: Mon, 23 Apr 2018 10:09:20 -0600 From: Michal Hocko <mhocko@...nel.org> To: David Rientjes <rientjes@...gle.com>, Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp> Cc: Andrew Morton <akpm@...ux-foundation.org>, Andrea Arcangeli <aarcange@...hat.com>, Roman Gushchin <guro@...com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [patch v2] mm, oom: fix concurrent munlock and oom reaper unmap On Sun 22-04-18 07:18:57, Michal Hocko wrote: > On Sat 21-04-18 20:45:11, David Rientjes wrote: [...] > Maybe invoking the reaper as suggested by Tetsuo will help here. Maybe > we will come up with something more smart. But I would like to have a > stop gap solution for stable that is easy enough. And your patch is not > doing that because it adds a very subtle dependency on the page lock. > So please stop repeating your arguments all over and either come with > an argument which proves me wrong and the lock_page dependency is not > real or come with an alternative solution which doesn't make > MMF_OOM_SKIP depend on the page lock. I though I would give this a try but I am at a conference and quite busy. Tetsuo are you willing to give it a try so that we have something to compare and decide, please? -- Michal Hocko SUSE Labs
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