From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 22 Sep 2010 06:38:44 +0000 (+0200)
Subject: rcu: rcu_read_lock_bh_held(): disabling irqs also disables bh
X-Git-Tag: v2.6.36-rc7~6^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3a084b9b684622b149e8dcf03855bf0d5fb588b;p=pandora-kernel.git

rcu: rcu_read_lock_bh_held(): disabling irqs also disables bh

rcu_dereference_bh() doesnt know yet about hard irq being disabled, so
lockdep can trigger in netpoll_rx() after commit f0f9deae9e7c4 (netpoll:
Disable IRQ around RCU dereference in netpoll_rx)

Reported-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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