On Tue, Dec 08, 2020 at 09:39:28PM +0200, Vladimir Oltean wrote:
> It is not clear what this lock protects. If the authors wanted to ensure
> that "dev" does not disappear, that is impossible, given the following
> code path:
>
> mlx4_ib_netdev_event (under RTNL mutex)
> -> mlx4_ib_scan_netdevs
>
It is not clear what this lock protects. If the authors wanted to ensure
that "dev" does not disappear, that is impossible, given the following
code path:
mlx4_ib_netdev_event (under RTNL mutex)
-> mlx4_ib_scan_netdevs
-> mlx4_ib_update_qps
Also, the dev_base_lock does not protect dev->dev_add
