linux-kernel - Re: [PATCH -V6 07/14] memcg: Add HugeTLB extension

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Message-ID: <20120610150410.GA11204@skywalker.linux.vnet.ibm.com>
Date:	Sun, 10 Jun 2012 20:34:10 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	mgorman@...e.de,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	dhillf@...il.com, aarcange@...hat.com, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	Michal Hocko <mhocko@...e.cz>, Ying Han <yinghan@...gle.com>
Subject: Re: [PATCH -V6 07/14] memcg: Add HugeTLB extension

On Sat, Jun 09, 2012 at 06:55:30PM -0700, David Rientjes wrote:
> On Sat, 9 Jun 2012, Aneesh Kumar K.V wrote:
> 
> > David Rientjes didn't like HugetTLB limit to be a memcg extension and
> > wanted this to be a separate controller. I posted a v7 version that did
> > HugeTLB limit as a separate controller and used page cgroup to track
> > HugeTLB cgroup. Kamezawa Hiroyuki didn't like the usage of page_cgroup
> > in HugeTLB controller( http://mid.gmane.org/4FCD648E.90709@jp.fujitsu.com )
> > 
> 
> Yes, and thank you very much for working on v8 to remove the dependency on 
> page_cgroup and to seperate this out.  I think it will benefit users who 
> don't want to enable all of memcg but still want to account and restrict 
> hugetlb page usage, and I think the code seperation is much cleaner 
> internally.
> 

I have V9 ready to post. Only change I have against v8 is to fix the compund_order
comparison and folding the charge/uncharge patches with its users. I will wait for
your review feedback before posting V9 so that I can address the review comments
in V9. Once we get V9 out we can get the series added to -mm ?

> I'll review that patchset and suggest that the old hugetlb extension in 
> -mm be dropped in the interim.
> 

I also agree with dropping the old hugetlb extension patchset in -mm.

-aneesh

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