Re: [PATCH net-next 03/13] net: sched: extend Qdisc with rcu

[Eric Dumazet]

On 09/06/2018 12:58 AM, Vlad Buslov wrote:

...

> diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
> index 18e22a5a6550..239c73f29471 100644
> --- a/include/net/sch_generic.h
> +++ b/include/net/sch_generic.h
> @@ -90,6 +90,7 @@ struct Qdisc {
>       struct gnet_stats_queue __percpu *cpu_qstats;
>       int                     padded;
>       refcount_t              refcnt;
> +     struct rcu_head         rcu;
>  
>       /*
>        * For performance sake on SMP, we put highly modified fields at the end

Probably better to move this at the end of struct Qdisc,
not risking unexpected performance regressions in fast path.