Subject: Re: 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs copies out

From: Johannes Berg <[email-masked]>
Date: Tue, 19 Feb 2013 11:03:41 +0100

On Mon, 2013-02-18 at 21:17 -0800, Eric Dumazet wrote:

> > chrome: page allocation failure: order:1, mode:0x4020
> > Pid: 8730, comm: chrome Tainted: G           O 3.7.8-amd64-preempt-20121226-fixwd #1
> > Call Trace:
> >  <IRQ>  [<ffffffff810d5f38>] warn_alloc_failed+0x117/0x12c

> You could try to load iwlwifi with amsdu_size_8K set to 0 (disable)
> 
> It should hopefully use order-0 pages

It will, do that then, unfortunately it can't switch at runtime because
it advertised this support to the access point or clients.

johannes