From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1754991AbdKNPLo (ORCPT <rfc822;w@1wt.eu>);
        Tue, 14 Nov 2017 10:11:44 -0500
Received: from Galois.linutronix.de ([146.0.238.70]:37814 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1753869AbdKNPLh (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Tue, 14 Nov 2017 10:11:37 -0500
Date: Tue, 14 Nov 2017 16:11:31 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Michal Hocko <mhocko@kernel.org>
cc: Andrew Morton <akpm@linux-foundation.org>, Tejun Heo <tj@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@suse.de>,
        linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: drop hotplug lock from lru_add_drain_all
In-Reply-To: <alpine.DEB.2.20.1711141605050.2044@nanos>
Message-ID: <alpine.DEB.2.20.1711141611070.2044@nanos>
References: <20171114135348.28704-1-mhocko@kernel.org> <alpine.DEB.2.20.1711141512180.2044@nanos> <20171114142347.syzyd6tlnpe2afur@dhcp22.suse.cz> <20171114143200.brmgskoqxjlrhrzx@dhcp22.suse.cz> <alpine.DEB.2.20.1711141605050.2044@nanos>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, 14 Nov 2017, Thomas Gleixner wrote:

> On Tue, 14 Nov 2017, Michal Hocko wrote:
> 
> > On Tue 14-11-17 15:23:47, Michal Hocko wrote:
> > [...]
> > > +/*
> > > + * Doesn't need any cpu hotplug locking because we do rely on per-cpu
> > > + * kworkers being shut down before our page_alloc_cpu_dead callback is
> > > + * executed on the offlined cpu
> > > + */
> > >  void lru_add_drain_all(void)
> > >  {
> > >  	static DEFINE_MUTEX(lock);
> > 
> > Ble the part of the comment didn't go through
> 
> Looks good.

With that added, feel free to add:

Acked-by: Thomas Gleixner <tglx@linutronix.de>