From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Subject: Re: [PATCH 02/14] net: sched: change type of reference and bind
 counters
Date: Sat, 19 May 2018 18:04:42 -0300
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To: Vlad Buslov <vladbu@mellanox.com>
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On Mon, May 14, 2018 at 05:27:03PM +0300, Vlad Buslov wrote:
> Change type of action reference counter to refcount_t.
>
> Change type of action bind counter to atomic_t.
> This type is used to allow decrementing bind counter without testing
> for 0 result.

... and in what does not testing for 0 result helps?

  Marcelo