Re: [PATCH] percpu-refcount: fix usage of this_cpu_ops (was Re: hanging aio process)

[Christoph Lameter]

On Wed, 4 Jun 2014, Tejun Heo wrote:

> Urgh... I really don't like the subtleties around __this_cpu_*().
> It's too easy to get it wrong and fail to notice it.  :(

Thats why we added the preemption check logic recently. Wonder why it did
not trigger in this case.


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