Re: [PATCH 3/3] kref: Remove the memory barriers

[Peter Zijlstra]

On Sat, 2011-12-10 at 22:07 +0800, Ming Lei wrote:
> > While true, it fails to show why this is a problem. I say it is not a
> 
> IMO, the added two barriers are pairs of the implicit barrier in kref_put, so
> that we can order between kref_init/kref_get and kref_put. 

Yeah so? If there's a destruction race with kref_put() the barrier won't
solve it. Other than that the actual order of get/put is irrelevant.
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