On Fri, 15 Jan 2021 09:24:05 +0100
Ivan Vecera <ivec...@redhat.com> wrote:
> > according to your explanation in the commit message the team->lock
> > mutex will be also taken under this rcu lock, so this is bad even
> > if dev_set_mtu does not sleep.
> >
> Hmm, you are right... btw do we need to take this mutex at this place?
>
> team_change_mtu() is protected by RTNL, team_device_event() as a netdevice
> notifier as well... and team_{add,del}_slave() that modify port list
> also.
>
> Thoughts?
After private discussion with Jiri, this is no-go as he would not like to
introduce a dependency on RTNL into team driver. The other solution is
to postpone features calculation in certain cases... the patch follows.
Ivan
