Re: [BUG] at mm/slab.c:3320

[Nishanth Aravamudan <nacc@us.ibm.com>]

On 07.01.2008 [21:38:51 -0800], Christoph Lameter wrote:
> On Tue, 8 Jan 2008, KAMEZAWA Hiroyuki wrote:
> 
> > In usual alloc_pages() allocator, this is done by zonelist fallback.
> 
> Hmmm... __cache_alloc_node does:
> 
>     if (unlikely(!cachep->nodelists[nodeid])) {
>                 /* Node not bootstrapped yet */
>                 ptr = fallback_alloc(cachep, flags);
>                 goto out;
>         }
> 
> So kmalloc_node does the correct fallback.
> 
> Kmalloc does not fall back but relies on numa_node_id() referring to a 
> node that has ZONE_NORMAL memory. Sigh.

Do we (perhaps you already have done so, Christoph), want to validate
any other users of numa_node_id() that then make assumptions about the
characteristics of the nid? Hrm, that sounds good in theory, but seems
hard in practice?

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

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