Re: [PATCH net-next 1/3] cxgb4: add mirror action to TC-MATCHALL offload

[Jakub Kicinski]

On Thu, 25 Jun 2020 17:28:41 +0530 Rahul Lakkireddy wrote:
> +     if (refcount_read(&pi->vi_mirror_refcnt) > 1) {
> +             refcount_dec(&pi->vi_mirror_refcnt);
> +             return;
> +     }

FWIW this looks very dodgy. If you know nothing changes the count
between the read and the dec here, you probably don't need atomic
refcounts at all..