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Date:   Thu,  2 Nov 2017 10:36:11 +0100
From:   Michal Hocko <>
To:     <>
Cc:     Peter Zijlstra <>,
        Thomas Gleixner <>,
        Johannes Weiner <>,
        Mel Gorman <>, Tejun Heo <>,
        LKML <>
Subject: [RFC 0/2] do not depend on cpuhotplug logs in lru_add_drain_all 

this is an RFC to drop get_online_cpus from lru_add_drain_all ad this
has caused a very subtle lockdep splats recently [1]. I didn't get even
to properly test this yet and I am sending it early to check whether the
thinking behind is sound. I am basically following the same pattern we
have used for removing get_online_cpus from drain_all_pages which should
be the similar case.

Does anybody see any obvious problem?


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