On Mon, Mar 15, 2021 at 2:07 PM Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > I thought pfifo was supposed to be "lockless" and this change > re-introduces a lock between producer and consumer, no? It has never been truly lockless, it uses two spinlocks in the ring buffer implementation, and it introduced a q->seqlock recently, with this patch now we have priv->lock, 4 locks in total. So our "lockless" qdisc ends up having more locks than others. ;) I don't think we are going to a right direction... Thanks.
