diff mbox series

[net-next,3/4] net/smc: use rcu_barrier() on module unload

Message ID 20191116164732.47059-4-kgraul@linux.ibm.com
State Accepted
Delegated to: David Miller
Headers show
Series last part of termination improvements | expand

Commit Message

Karsten Graul Nov. 16, 2019, 4:47 p.m. UTC 
From: Ursula Braun <ubraun@linux.ibm.com>

Add rcu_barrier() to make sure no RCU readers or callbacks are
pending when the module is unloaded.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
---
 net/smc/af_smc.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 42b7fb8ab22b..cde4dc0ed173 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -25,6 +25,7 @@ 
 #include <linux/in.h>
 #include <linux/sched/signal.h>
 #include <linux/if_vlan.h>
+#include <linux/rcupdate_wait.h>
 
 #include <net/sock.h>
 #include <net/tcp.h>
@@ -2111,6 +2112,7 @@  static void __exit smc_exit(void)
 	proto_unregister(&smc_proto);
 	smc_pnet_exit();
 	unregister_pernet_subsys(&smc_net_ops);
+	rcu_barrier();
 }
 
 module_init(smc_init);