The following commit has been merged in the master branch: commit 0893b89b1bc3640609d572b99201228cd99ad80b Author: Sven Eckelmann sven.eckelmann@gmx.de Date: Sat Sep 18 11:11:40 2010 +0000

batman-adv: wait for call_rcu before unloading module

synchronize_rcu respective synchronize_net only waits for the rcu grace period to elapse and we may fail to finish the calls which were made to call_rcu in that time. In result the module could be unloaded during the execution of the RCU callbacks.

rcu_barrier[1] will now wait for all outstanding RCU callbacks to finish before continuing.

[1] Documentation/RCU/rcubarrier.txt

Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de

diff --git a/main.c b/main.c index e8acb46..a067f75 100644 --- a/main.c +++ b/main.c @@ -74,7 +74,7 @@ static void __exit batman_exit(void) destroy_workqueue(bat_event_workqueue); bat_event_workqueue = NULL;

- synchronize_net(); + rcu_barrier(); }

int mesh_init(struct net_device *soft_iface)