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

Eric Dumazet
2013-02-20T19:17:38Z

On Wed, 2013-02-20 at 19:16 +0100, Johannes Berg wrote:

> Yes and no. The current code doesn't pull in much data, not even the IP
> header, so worst case it copies 14 bytes (ethernet header) in mac80211
> to obtain alignment. By pulling in everything here, it later has to copy
> everything again later to obtain alignment.

Can you give me pointers to the code doing that ?

On x86 we should not doing anything.