linux-kernel - Re: [RFC][PATCH 2/3] CGroups: Use hierarchy

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Message-ID: <6599ad830812110905k4e32363fp671bf88e18fbf349@mail.gmail.com>
Date:	Thu, 11 Dec 2008 09:05:47 -0800
From:	Paul Menage <menage@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	balbir@...ux.vnet.ibm.com, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [RFC][PATCH 2/3] CGroups: Use hierarchy_mutex in memory 
	controller

On Wed, Dec 10, 2008 at 10:53 PM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
>
> Could you write a document to explain what kind of nest of locks are allowed
> before merging this ?

We should probably treat it similarly to the cpuset "callback_mutex".
I.e. memory allocations are most likely forbidden when you're holding
it.

Paul
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