linux-kernel - Re: [PATCH] Show slab memory usage on OOM and SysRq-M

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Message-ID: <Pine.LNX.4.64.0704180915520.11160@sbz-30.cs.Helsinki.FI>
Date:	Wed, 18 Apr 2007 09:17:19 +0300 (EEST)
From:	Pekka J Enberg <penberg@...helsinki.fi>
To:	Eric Dumazet <dada1@...mosbay.com>
cc:	Pavel Emelianov <xemul@...ru>, Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	devel@...nvz.org, Kirill Korotaev <dev@...nvz.org>,
	linux-mm@...ck.org
Subject: Re: [PATCH] Show slab memory usage on OOM and SysRq-M

On Tue, 17 Apr 2007, Eric Dumazet wrote:
> This nr_pages should be in struct kmem_list3, not in struct kmem_cache, 
> or else you defeat NUMA optimizations if touching a field in kmem_cache 
> at kmem_getpages()/kmem_freepages() time.

We already touch ->flags, ->gfpflags, and ->gfporder in kmem_getpages(). 
Sorry for my ignorance, but how is this different?
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