linux-kernel - Re: [PATCH v3 3/4] limit nr

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Message-ID: <CAOJsxLFjZffC9i5kQsBWjGy3eWdj3VMB5awz=yPcwgeKb5BG0Q@mail.gmail.com>
Date:	Mon, 15 Aug 2011 14:14:39 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	Dave Chinner <david@...morbit.com>,
	Glauber Costa <glommer@...allels.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"containers@...ts.linux-foundation.org" 
	<containers@...ts.linux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>,
	Nick Piggin <npiggin@...nel.dk>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	James Bottomley <jbottomley@...allels.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Christoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCH v3 3/4] limit nr_dentries per superblock

Hi Pavel,

On Mon, Aug 15, 2011 at 2:05 PM, Pavel Emelyanov <xemul@...allels.com> wrote:
> This will make sense, since the kernel memory management per-cgroup is one of the
> things we'd live to have, but this particular idea will definitely not work in case
> we keep the containers' files on one partition keeping each container in its own
> chroot environment.

And you want a per-container dcache limit? Will the containers share
the same superblock? Couldn't you simply do per-container "struct
kmem_accounted_cache" in struct superblock?

                        Pekka
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