Re: [PATCH v3 07/15] KVM: MMU: introduce nulls desc

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On Mon, Nov 25, 2013 at 12:05:00PM +0100, Peter Zijlstra wrote:
> On Mon, Nov 25, 2013 at 06:59:24PM +0800, Xiao Guangrong wrote:
> > I guess Marcelo was talking about rculist_nulls.h
> > (Documentation/RCU/rculist_nulls.txt).
> 
> Oh, let me have a look, I don't think I've really looked at that yet.

Egads, that's far too clever ;-)

Yes, if that's what Marcello was referencing to he's right, it doesn't
have a proper termination condition in the face of unlimited
modification.

And it can indeed use SLAB_DESTROY_BY_RCU as you alluded to -- although
the documentation is a tad scarce explaining why this is so.
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