Re: [PATCH] Deadlock during heavy write activity to userspace NFS

Ulrich Weigand
2004-07-28T23:08:38Z

Nick Piggin wrote:

> Avi Kivity wrote:
> > The kernel NFS client (which kswapd depends on) has the same issue. Has
> > anyone ever observed kswapd deadlock due to imcoming or outgoing NFS
> > packets being discarded due to oom?
> >
>
> Yes this has been observed.
>
> alloc_skb on the client needs to somehow know that traffic coming
> from the server is "MEMALLOC" and allowed to use memory reserves.

What would be an appropriate way to solve this problem? A special
socket option?

Bye,
Ulrich

--
Dr. Ulrich Weigand
weigand@informatik.uni-erlangen.de