On Sat, 6 Feb 2010, Andi Kleen wrote:

quoted text
> > in the series; slab_node_prepare() is called in that previous patch by a 
> > memory hotplug callback without holding cache_chain_mutex (it's taken by 
> > the cpu hotplug callback prior to calling cpuup_prepare() currently).  So 
> > slab_node_prepare() should note that we require the mutex and the memory 
> > hotplug callback should take it in the previous patch.
> 
> AFAIK the code is correct. If you feel the need for additional
> documentation feel free to send patches yourself.
> 

Documentation?  You're required to take cache_chain_mutex before calling 
slab_node_prepare() in your memory hotplug notifier, it iterates 
cache_chain.  Please look again.
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