From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH 1/4] slub: automatically reserve bytes at the end of
 slab
Date: Tue, 8 Mar 2011 12:24:07 -0600 (CST)
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Cc: Ingo Molnar <mingo@elte.hu>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Pekka Enberg <penberg@kernel.org>,
	Eric Dumazet <eric.dumazet@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Matt Mackall <mpm@selenic.com>, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org
To: Lai Jiangshan <laijs@cn.fujitsu.com>
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On Tue, 1 Mar 2011, Lai Jiangshan wrote:

> So we add a field "reserved" to struct kmem_cache, when a slab
> is allocated, kmem_cache->reserved bytes are automatically reserved
> at the end of the slab for slab's metadata.

The reserved field should be exported via sysfs. Please add the code to
show it in /sys/kernel/slab/<name>