On Mon, 19 Jan 2026 09:04:35 -0800 Jakub Kicinski wrote:
> > > Not sure if there's much we can do about that.. Perhaps we should have
> > > a shrinker that flushes the defer queues? I chatted with Shakeel briefly
> > > and it sounded fairly straightforward.    
> > 
> > I was mostly concerned about latency spikes, I did some tests here and
> > this seems fine.  
> 
> Looks like selftests run into the zerocopy Tx latency issue.
> I'll drop this version from patchwork..

Delaying zero copy forever is a bit of an annoyance.
I believe the same thing can happen in net-next with UDP 
but I haven't tested to confirm.

I assume the attached patch is out of question since it came up before?