Commit 4ead9c96 authored Nov 16, 2019 by Ursula Braun Committed by David S. Miller Nov 16, 2019

net/smc: use rcu_barrier() on module unload



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>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent a33a803c

net/smc/af_smc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

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