From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vlad Buslov <vladbu@mellanox.com>
Subject: Re: [PATCH 02/14] net: sched: change type of reference and bind counters
Date: Sun, 20 May 2018 13:55:59 +0300
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To: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
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On Sat 19 May 2018 at 21:04, Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> wrote:
> 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

Atomic operations don't WARN in this case.