From: Bob Copeland <me@bobcopeland.com>
Date: Thu, 18 Apr 2013 22:26:49 +0000 (-0400)
Subject: mac80211: use synchronize_rcu() with rcu_barrier()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~43^2^2~61^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ceb59557bdc373e532b87d4142ce27e04218f0e;p=pandora-kernel.git

mac80211: use synchronize_rcu() with rcu_barrier()

The RCU docs used to state that rcu_barrier() included a wait
for an RCU grace period; however the comments for rcu_barrier()
as of commit f0a0e6f... "rcu: Clarify memory-ordering properties
of grace-period primitives" contradict this.

So add back synchronize_{rcu,net}() to where they once were,
but keep the rcu_barrier()s for the call_rcu() callbacks.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bob Copeland <bob@cozybit.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

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