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Date:   Fri, 29 Mar 2019 18:37:23 +0100
From:   Oleg Nesterov <oleg@redhat.com>
To:     Joel Fernandes <joel@joelfernandes.org>
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Subject: Re: [PATCH] Convert struct pid count to refcount_t
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On 03/28, Joel Fernandes wrote:
>
> Also Oleg, why not just call refcount_dec_and_test like below?

Of course we can, this is just optimization to avoid the atomic op if possible.

Does this optimization really help? I have no idea ;)

But as you can see, it surely helps to provoke the interesting discussions!

Oleg.