On Tue, 30 Jun 2026 11:21:29 -0700 Stanislav Fomichev wrote:

+Many ``NETDEV_UNREGISTER`` handlers release their lowers with
+``dev_close()``, which takes the instance lock itself. Holding
+the lock across UNREGISTER would deadlock.
+
+Moving UNREGISTER under the lock is mechanical: switch those
+callers to the ``netif_*()`` lock-held variants. Deferred to
+limit churn.

Not following TBH. Let's say there's a UNREGISTER ntf for eth0.
Are you saying that eg. vlan which closes their own vlan0 devices
on top of eth0 needs to be switched to netif_ ? That wouldn't make
sense since the notification is holding netdev_lock(eth0) and
we're talking about netif_close(vlan0)?

Doing anything with the device that is sending the UNREGISTER
sounds odd, since it's going away..