linux-kernel - Re: [PATCH] cfg80211: Pass lockdep expression to RCU lists

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Date:   Wed, 19 Feb 2020 10:13:36 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Amol Grover <frextrite@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Joel Fernandes <joel@...lfernandes.org>,
        Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: Re: [PATCH] cfg80211: Pass lockdep expression to RCU lists

On Wed, 2020-02-19 at 14:41 +0530, Amol Grover wrote:
>  
> -	WARN_ON_ONCE(!rcu_read_lock_held() && !lockdep_rtnl_is_held());
> -
> -	list_for_each_entry_rcu(pos, &rdev->sched_scan_req_list, list) {
> +	list_for_each_entry_rcu(pos, &rdev->sched_scan_req_list, list,
> +				lockdep_rtnl_is_held()) {

Huh, I didn't even know you _could_ do that :)

johannes