netdev - Re: 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure)

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Message-Id: <20120409.141241.1216091936509309354.davem@davemloft.net>
Date:	Mon, 09 Apr 2012 14:12:41 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	marc@...lins.org
Cc:	bhutchings@...arflare.com, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: 3.2.8/amd64 full interrupt hangs and deadlocks under big
 network copies (page allocation failure)

From: Marc MERLIN <marc@...lins.org>
Date: Mon, 9 Apr 2012 10:20:51 -0700

> Any idea what's going on, what bucket of RAM is an issue for the driver
> (total RAM is more than plenty), and where I should go from there?

The wireless layer is allocating high-order pages, so it's
not the amount of ram, it's the fragmentation of it leading
to a lack of those high-order pages.
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