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Message-ID: <20131220114439.23af09fc@redhat.com>
Date: Fri, 20 Dec 2013 11:44:39 -0500
From: Luiz Capitulino <lcapitulino@...hat.com>
To: Luiz Capitulino <lcapitulino@...hat.com>
Cc: Glauber Costa <glommer@...il.com>,
Vladimir Davydov <vdavydov@...allels.com>, dchinner@...hat.com,
Michal Hocko <mhocko@...e.cz>,
Johannes Weiner <hannes@...xchg.org>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
cgroups@...r.kernel.org, devel@...nvz.org,
Glauber Costa <glommer@...nvz.org>,
John Stultz <john.stultz@...aro.org>,
Joonsoo Kim <iamjoonsoo.kim@....com>,
Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH v14 16/18] vmpressure: in-kernel notifications
On Fri, 20 Dec 2013 10:03:32 -0500
Luiz Capitulino <lcapitulino@...hat.com> wrote:
> > The answer for all of your questions above can be summarized by noting
> > that for the lack of other users (at the time), this patch does the bare minimum
> > for memcg needs. I agree, for instance, that it would be good to pass the level
> > but since memcg won't do anything with thta, I didn't pass it.
> >
> > That should be extended if you need to.
>
> That works for me. That is, including this minimal version first and
> extending it when we get in-tree users.
Btw, there's something I was thinking just right now. If/when we
convert shrink functions to use this API, they will come to depend
on CONFIG_MEMCG=y. IOW, they won't work if CONFIG_MEMCG=n.
Is this acceptable (this is an honest question)? Because today, they
do work when CONFIG_MEMCG=n. Should those shrink functions use the
shrinker API as a fallback?
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