Re: [patch 1/2] kref: detect kref_put() with unreferenced object

[Akinobu Mita]

> I really don't see how this is going to make it easier to debug
> anything.  Remember, when a kref goes to 0, it is automatically freed.
> So any code that tries to use it afterward just dies a horrible death,
> if CONFIG_DEBUG_SLAB is enabled.

Thanks, I finally understood it is not needed as you said.
So I can just remove that BUG_ON()es for detecting zero atomic_t counter
while I replace atomic_t counters with kref.
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