[PATCH 07/10] decnet: Use rcu_barrier() on module unload.
From: Jesper Dangaard Brouer <hidden>
Date: 2009-06-23 15:32:28
Also in:
linux-ext4, linux-nfs, linux-wireless, lkml, netfilter-devel
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The decnet module unloading as been disabled with a '#if 0' statement, because it have had issues. Perhaps using rcu_barrier() will fix these issues? Any maintainers with input? Signed-off-by: Jesper Dangaard Brouer <redacted> --- net/decnet/af_decnet.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index d351b8d..bff12da 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c@@ -2393,6 +2393,10 @@ module_init(decnet_init); * Prevent DECnet module unloading until its fixed properly. * Requires an audit of the code to check for memory leaks and * initialisation problems etc. + * + * hawk@comx.dk 2009-06-19: + * I have added a rcu_barrier() which should plug some of your + * module unload issues. Maintainers please try it out... */ #if 0 static void __exit decnet_exit(void)
@@ -2413,6 +2417,8 @@ static void __exit decnet_exit(void) proc_net_remove(&init_net, "decnet"); proto_unregister(&dn_proto); + + rcu_barrier_bh(); /* Wait for completion of call_rcu_bh()'s */ } module_exit(decnet_exit); #endif