linux-kernel - Re: [PATCH 06/51] memcg: add mem_cgroup_root

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Message-ID: <20150619151719.GI12934@mtj.duckdns.org>
Date:	Fri, 19 Jun 2015 11:17:19 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	axboe@...nel.dk, linux-kernel@...r.kernel.org, jack@...e.cz,
	hch@...radead.org, hannes@...xchg.org,
	linux-fsdevel@...r.kernel.org, vgoyal@...hat.com,
	lizefan@...wei.com, cgroups@...r.kernel.org, linux-mm@...ck.org,
	clm@...com, fengguang.wu@...el.com, david@...morbit.com,
	gthelen@...gle.com, khlebnikov@...dex-team.ru
Subject: Re: [PATCH 06/51] memcg: add mem_cgroup_root_css

On Fri, Jun 19, 2015 at 11:18:48AM +0200, Michal Hocko wrote:
> On Thu 18-06-15 13:49:30, Tejun Heo wrote:
> [...]
> > > I have tried to compile with !CONFIG_MEMCG and !CONFIG_CGROUP_WRITEBACK
> > > without mem_cgroup_root_css defined for this configuration and
> > > mm/backing-dev.c compiles just fine. So maybe we should get rid of it
> > > rather than have a potentially tricky code?
> > 
> > Yeah, please feel free to queue a patch to remove it if doesn't break
> > anything.
> 
> Against which branch should a I generate the patch?

It's in the for-4.2/writeback branch of the block tree; however, a
patch against -mm should work, right?

Thanks.

-- 
tejun
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