Re: [PATCH] net: Convert net_mutex into rw_semaphore and down read it on net->init/->exit

[Stephen Hemminger]

On Tue, 14 Nov 2017 16:53:33 +0300
Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> wrote:

> +	/*
> +	 * RCU-protected list, modifiable by pernet-init and -exit methods.
> +	 * When net namespace is alive (net::count > 0), all the changes
> +	 * are made under rw_sem held on write.
> +	 */
> +	struct list_head	fib_notifier_ops;
>  

If you use __rcu annotation then it could be checked (and the comment is not needed).