From: Vlad Buslov <vla...@mellanox.com> Date: Mon, 12 Nov 2018 09:55:30 +0200
> +void mini_qdisc_pair_swap(struct mini_Qdisc_pair *miniqp,
> + struct tcf_proto *tp_head)
> +{
> + xchg(&miniqp->tp_head, tp_head);
If you are not checking the return value of xchg(), then this is
simply a store with optionally a memory barrier of some sort
either before or after.
