Re: [PATCH net-next v3 0/1] ppp: Replace per-CPU recursion counter with lock-owner field

On Tue, Jul 15, 2025 at 05:08:05PM +0200, Sebastian Andrzej Siewior wrote:

This is another approach to avoid relying on local_bh_disable() for
locking of per-CPU in ppp.

I redid it with the per-CPU lock and local_lock_nested_bh() as discussed
in v1. The xmit_recursion counter has been removed since it served the
same purpose as the owner field. Both were updated and checked.

The xmit_recursion looks like a counter in ppp_channel_push() but at
this point, the counter should always be 0 so it always serves as a
boolean. Therefore I removed it.

I do admit that this looks easier to review.

Thanks!

Reviewed-by: Guillaume Nault <redacted>