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From: Michal Hocko <mhocko@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
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
Date: Tue, 14 Nov 2017 16:14:59 +0100	[thread overview]
Message-ID: <20171114151459.o2b7lnogq57giiks@dhcp22.suse.cz> (raw)
In-Reply-To: <alpine.DEB.2.20.1711141605050.2044@nanos>

On Tue 14-11-17 16:05:21, 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.

Thanks! I have folded that to the patch and will wait a day or two for
more comments and then resubmit.
-- 
Michal Hocko
SUSE Labs

WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
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
Date: Tue, 14 Nov 2017 16:14:59 +0100	[thread overview]
Message-ID: <20171114151459.o2b7lnogq57giiks@dhcp22.suse.cz> (raw)
In-Reply-To: <alpine.DEB.2.20.1711141605050.2044@nanos>

On Tue 14-11-17 16:05:21, 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.

Thanks! I have folded that to the patch and will wait a day or two for
more comments and then resubmit.
-- 
Michal Hocko
SUSE Labs

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  parent reply	other threads:[~2017-11-14 15:15 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-14 13:53 [PATCH] mm: drop hotplug lock from lru_add_drain_all Michal Hocko
2017-11-14 13:53 ` Michal Hocko
2017-11-14 14:13 ` Thomas Gleixner
2017-11-14 14:13   ` Thomas Gleixner
2017-11-14 14:23   ` Michal Hocko
2017-11-14 14:23     ` Michal Hocko
2017-11-14 14:32     ` Michal Hocko
2017-11-14 14:32       ` Michal Hocko
2017-11-14 15:05       ` Thomas Gleixner
2017-11-14 15:05         ` Thomas Gleixner
2017-11-14 15:11         ` Thomas Gleixner
2017-11-14 15:11           ` Thomas Gleixner
2017-11-14 15:14         ` Michal Hocko [this message]
2017-11-14 15:14           ` Michal Hocko
2017-11-16 12:05 Michal Hocko
2017-11-16 12:05 ` Michal Hocko

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