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Message-ID: <1361291809.19353.145.camel@edumazet-glaptop> (sfid-20130219_173702_652671_77AABC5C)
Subject: Re: 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs
 copies out
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Marc MERLIN <marc@merlins.org>
Cc: Johannes Berg <johannes@sipsolutions.net>,
	David Miller <davem@davemloft.net>, Larry.Finger@lwfinger.net,
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Date: Tue, 19 Feb 2013 08:36:49 -0800
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On Tue, 2013-02-19 at 08:18 -0800, Marc MERLIN wrote:

> 
> Forgive the newbie question: would the inability to get pages cause
> interrupts to be disabled or at least something that would stop the mouse
> cursor and the keyboard from working?
> 

Maybe these things also need order-1 pages to work ;)

Any kmem_cache using order-1 or order-2 pages can not allocate new slabs

For example, TCP sockets can not be allocated anymore, and fork() might
not work anymore (kernel stacks need order-1 pages)

I dont remember your case, but do you use CONFIG_COMPACTION=y ?