Re: [PATCH net] tun, bpf: fix suspicious RCU usage in tun_{attach,detach}_filter

[Eric Dumazet]

On Thu, 2016-03-31 at 13:35 +0200, Daniel Borkmann wrote:

> +static inline bool sock_owned_externally(const struct sock *sk)
> +{
> +     return sk->sk_flags & (1UL << SOCK_EXTERNAL_OWNER);
> +}
> +

Have you reinvented sock_flag(sl, SOCK_EXTERNAL_OWNER) ? ;)

Anyway, using a flag for this purpose sounds overkill to me.

Setting it is a way to 'fool' lockdep anyway...