From: Jesper Dangaard Brouer Subject: [PATCH 3/5] can: af_can.c use rcu_barrier() on module unload. Date: Mon, 08 Jun 2009 15:11:38 +0200 Message-ID: <20090608131138.10052.5408.stgit@localhost> References: <20090608130959.10052.54590.stgit@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Cc: Jesper Dangaard Brouer , "Paul E. McKenney" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, urs.thuermann@volkswagen.de, oliver.hartkopp@volkswagen.de, wg@grandegger.com, vladislav.yasevich@hp.com, sri@us.ibm.com, linux-sctp@vger.kernel.org, Trond.Myklebust@netapp.com, linux-nfs@vger.kernel.org, netfilter-devel@vger.kernel.org To: "David S. Miller" Return-path: In-Reply-To: <20090608130959.10052.54590.stgit@localhost> Sender: netfilter-devel-owner@vger.kernel.org List-ID: This module uses rcu_call() thus it should use rcu_barrier() on module unload. Signed-off-by: Jesper Dangaard Brouer --- net/can/af_can.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/net/can/af_can.c b/net/can/af_can.c index 10f0528..e733725 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -903,6 +903,8 @@ static __exit void can_exit(void) } spin_unlock(&can_rcvlists_lock); + rcu_barrier(); /* Wait for completion of call_rcu()'s */ + kmem_cache_destroy(rcv_cache); }