netdev - Re: [PATCH net-next 1/2] ipv6: avoid high order memory allocations for /proc/net/ipv6

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Message-Id: <20130927.173302.304054571363734165.davem@davemloft.net>
Date:	Fri, 27 Sep 2013 17:33:02 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	hannes@...essinduktion.org
Cc:	netdev@...r.kernel.org, greearb@...delatech.com, kaber@...sh.net,
	yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH net-next 1/2] ipv6: avoid high order memory allocations
 for /proc/net/ipv6_route

From: Hannes Frederic Sowa <hannes@...essinduktion.org>
Date: Sat, 21 Sep 2013 16:55:59 +0200

> Dumping routes on a system with lots rt6_infos in the fibs causes up to
> 11-order allocations in seq_file (which fail). While we could switch
> there to vmalloc we could just implement the streaming interface for
> /proc/net/ipv6_route. This patch switches /proc/net/ipv6_route from
> single_open_net to seq_open_net.
> 
> loff_t *pos tracks dst entries.
> 
> Also kill never used struct rt6_proc_arg and now unused function
> fib6_clean_all_ro.
> 
> Cc: Ben Greear <greearb@...delatech.com>
> Cc: Patrick McHardy <kaber@...sh.net>
> Cc: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
> Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

Applied, nice work.
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