linux-kernel - Re: [PATCH] slab: initialize unused alien cache entry as NULL at alloc_alien

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Date:	Wed, 23 Dec 2009 11:23:43 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Haicheng Li <haicheng.li@...ux.intel.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-mm@...ck.org, Pekka Enberg <penberg@...helsinki.fi>,
	Matt Mackall <mpm@...enic.com>, andi@...stfloor.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] slab: initialize unused alien cache entry as NULL at
	alloc_alien_cache().

> Then, this is a violation of the first statement :
> 
> nr_node_ids = 1 + nid of highest POSSIBLE node.
> 
> If your system allows hotplugging of new nodes, then POSSIBLE nodes should include them
> at boot time.

Agreed, nr_node_ids must be possible nodes.

It should have been set up by the SRAT parser (modulo regressions)

Haicheng, did you verify with printk it's really incorrect at this point?
-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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