Re: possible slab deadlock while doing ifenslave

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On Tue, 2011-11-29 at 08:58 -0600, Christoph Lameter wrote:
> On Mon, 28 Nov 2011, Peter Zijlstra wrote:
> 
> > Currently we only annotate the kmalloc caches, annotate all of them.
> 
> What is the benefit? 

Extra paranoia I guess..  I was fairly sure it was pointless, but I send
it anyway.

> The metadata for off slab caches uses the
> kmalloc array. Should the annotation for the kmalloc cache not be
> sufficient by putting that into a different lock category? Non-kmalloc
> caches already have a different lock category before this patch right?

Yeah, we annotate all kmalloc caches that have l3 and aren't OFF_SLAB().


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