linux-kernel - Re: [PATCH 2/2] mm/memcontrol.c: introduce helper mem_cgroup_zoneinfo

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Message-ID: <20140501125450.GA23420@cmpxchg.org>
Date:	Thu, 1 May 2014 08:54:50 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Jianyu Zhan <nasa4836@...il.com>, bsingharora@...il.com,
	kamezawa.hiroyu@...fujitsu.com, cgroups@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.com
Subject: Re: [PATCH 2/2] mm/memcontrol.c: introduce helper
 mem_cgroup_zoneinfo_zone()

On Mon, Apr 28, 2014 at 05:04:26PM +0200, Michal Hocko wrote:
> On Tue 22-04-14 11:59:23, Michal Hocko wrote:
> > On Sat 19-04-14 07:01:43, Jianyu Zhan wrote:
> > > introduce helper mem_cgroup_zoneinfo_zone(). This will make
> > > mem_cgroup_iter() code more compact.
> > 
> > I dunno. Helpers are usually nice but this one adds more code then it
> > removes. It also doesn't help the generated code.
> > 
> > So I don't see any reason to merge it.
> 
> So should we drop it from mmotm?

Yes, please.

> > > Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
> > > ---
> > >  mm/memcontrol.c | 15 +++++++++++----
> > >  1 file changed, 11 insertions(+), 4 deletions(-)

This helper adds no value, but more code and indirection.

Cc'd Andrew - this is about
mm-memcontrolc-introduce-helper-mem_cgroup_zoneinfo_zone.patch
mm-memcontrolc-introduce-helper-mem_cgroup_zoneinfo_zone-checkpatch-fixes.patch

Thanks!
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