From: Vladimir Davydov <vdavydov@parallels.com>
To: Michal Hocko <mhocko@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm] memcg: remove activate_kmem_mutex
Date: Tue, 21 Oct 2014 10:31:19 +0400 [thread overview]
Message-ID: <20141021063119.GM16496@esperanza> (raw)
In-Reply-To: <20141020185306.GB505@dhcp22.suse.cz>
On Mon, Oct 20, 2014 at 08:53:06PM +0200, Michal Hocko wrote:
> On Mon 20-10-14 19:11:29, Vladimir Davydov wrote:
> > The activate_kmem_mutex is used to serialize memcg.kmem.limit updates,
> > but we already serialize them with memcg_limit_mutex so let's remove the
> > former.
> >
> > Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
>
> Is this the case since bd67314586a3 (memcg, slab: simplify
> synchronization scheme)?
No, it's since Johannes' lockless page counters patch where we have the
memcg_limit_mutex introduced to synchronize concurrent limit updates (mm
commit dc1815408849 "mm: memcontrol: lockless page counters").
Thanks,
Vladimir
> Anyway Looks good to me.
> Acked-by: Michal Hocko <mhocko@suse.cz>
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next prev parent reply other threads:[~2014-10-21 6:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-20 15:11 Vladimir Davydov
2014-10-20 18:21 ` Johannes Weiner
2014-10-20 18:53 ` Michal Hocko
2014-10-21 6:31 ` Vladimir Davydov [this message]
2014-10-21 6:49 ` Michal Hocko
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