> diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
> index 2b8aac2..c751b0a 100644
> --- a/include/linux/netfilter.h
> +++ b/include/linux/netfilter.h
> @@ -111,28 +111,17 @@ struct nf_hook_entry {
> void *priv;
> };
>
> -struct nf_hook_entries_rcu_head {
> - struct rcu_head head;
> - void *allocation;
> -};
> -
> struct nf_hook_entries {
> u16 num_hook_entries;
> + struct rcu_head rcu;
This structure is accessed from the packet path.
> /* padding */
> struct nf_hook_entry hooks[];
>
> /* trailer: pointers to original orig_ops of each hook,
> - * followed by rcu_head and scratch space used for freeing
> - * the structure via call_rcu.
> *
> * This is not part of struct nf_hook_entry since its only
> * needed in slow path (hook register/unregister):
> * const struct nf_hook_ops *orig_ops[]
> - *
> - * For the same reason, we store this at end -- its
> - * only needed when a hook is deleted, not during
> - * packet path processing:
> - * struct nf_hook_entries_rcu_head head
I think it is convenient to keep struct rcu_head at the end of it.
