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Date:	Tue, 07 Oct 2014 18:28:38 -0700
From:	Eric Dumazet <>
To:	Eric Wheeler <>
Cc:	Shahed Shaikh <>,
	Stephen Hemminger <>,
	netdev <>,
	Rasesh Mody <>
Subject: Re: [PATCH net] bna: page allocation during interrupts to use a

On Tue, 2014-10-07 at 17:48 -0700, Eric Wheeler wrote:

> Just += unmap->vector.len still did not work (same backtrace), so I've 
> rebuilt with PAGE_SIZE<<2 and so far so good.  I'll let it run all night 
> and see if we get any problems.

Further inspection of the driver told me that unmap->vector.len should
be 16384 already. (same than PAGE_SIZE << 2)
(set at line 304, drivers/net/ethernet/brocade/bna/bnad.c)

So you might hit memory fragmentation issues.

Do you have CONFIG_COMPACTION=y in your .config ?

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