[Linux-kernel-mentees] [PATCH] cfg80211: Pass lockdep expression to RCU lists

Paul E. McKenney paulmck at kernel.org
Wed Feb 19 12:47:13 UTC 2020


On Wed, Feb 19, 2020 at 10:13:36AM +0100, Johannes Berg wrote:
> 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 :)

It is a fairly recent addition, courtesy of Joel Fernandes.  ;-)

							Thanx, Paul


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