From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 1 Jun 2010 07:26:58 +0000 (-0700)
Subject: ipv6: get rid of ipip6_prl_lock
X-Git-Tag: v2.6.36-rc1~571^2~707
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aac4dddc358acfd9d98b20024a42c34dfab31c39;p=pandora-kernel.git

ipv6: get rid of ipip6_prl_lock

As noticed by Julia Lawall, ipip6_tunnel_add_prl() incorrectly calls
kzallloc(..., GFP_KERNEL) while a spinlock is held. She provided
a patch to use GFP_ATOMIC instead.

One possibility would be to convert this spinlock to a mutex, or
preallocate the thing before taking the lock.

After RCU conversion, it appears we dont need this lock, since
caller already holds RTNL

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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