linux-kernel - Re: [PATCH] memory cgroup: update root memory cgroup when node is onlined

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Message-ID: <20121018220306.GA1739@cmpxchg.org>
Date:	Thu, 18 Oct 2012 18:03:06 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Wen Congyang <wency@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	cgroups@...r.kernel.org, linux-mm@...ck.org,
	Jiang Liu <liuj97@...il.com>, mhocko@...e.cz,
	bsingharora@...il.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	paul.gortmaker@...driver.com
Subject: Re: [PATCH] memory cgroup: update root memory cgroup when node is
 onlined

On Thu, Oct 18, 2012 at 12:03:44PM -0700, Hugh Dickins wrote:
> On Tue, 16 Oct 2012, Wen Congyang wrote:
> > At 09/14/2012 09:36 AM, Hugh Dickins Wrote:
> > > 
> > > Description to be filled in later: would it be needed for -stable,
> > > or is onlining already broken in other ways that you're now fixing up?
> > > 
> > > Reported-by: Tang Chen <tangchen@...fujitsu.com>
> > > Signed-off-by: Hugh Dickins <hughd@...gle.com>
> > 
> > Hi, all:
> > 
> > What about the status of this patch?
> 
> Sorry I'm being so unresponsive at the moment (or, as usual).
> 
> When I sent the fixed version afterwards (minus mistaken VM_BUG_ON,
> plus safer mem_cgroup_force_empty_list), I expected you or Konstantin
> to respond with a patch to fix it as you preferred (at offline/online);
> so this was on hold until we could compare and decide between them.
> 
> In the meantime, I assume, we've all come to feel that this way is
> simple, and probably the best way for now; or at least good enough,
> and we all have better things to do than play with alternatives.
> 
> I'll write up the description of the fixed version, and post it for
> 3.7, including the Acks from Hannes and KAMEZAWA (assuming they carry
> forward to the second version) - but probably not today or tomorrow.

Mine does, thanks for asking :-)
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