From: Amerigo Wang <amwang@redhat.com>
Date: Fri, 10 Aug 2012 01:24:42 +0000 (+0000)
Subject: netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev()
X-Git-Tag: v3.6-rc3~10^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2899656b494dcd118123af1126826b115c8ea6f9;p=pandora-kernel.git

netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev()

This patch fixes several problems in the call path of
netpoll_send_skb_on_dev():

1. Disable IRQ's before calling netpoll_send_skb_on_dev().

2. All the callees of netpoll_send_skb_on_dev() should use
   rcu_dereference_bh() to dereference ->npinfo.

3. Rename arp_reply() to netpoll_arp_reply(), the former is too generic.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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