[PATCH 04/10] sunrpc: Use rcu_barrier() on unload.

Jesper Dangaard Brouer
2009-06-23T15:05:08Z

The sunrpc module uses rcu_call() thus it should use rcu_barrier() on
module unload.

Have not verified that the possibility for new call_rcu() callbacks
has been disabled. As a hint for checking, the functions calling
call_rcu() (unx_destroy_cred and generic_destroy_cred) are
registered as crdestroy function pointer in struct rpc_credops.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
---

net/sunrpc/sunrpc_syms.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c
index 843629f..adaa819 100644
--- a/net/sunrpc/sunrpc_syms.c
+++ b/net/sunrpc/sunrpc_syms.c
@@ -66,6 +66,7 @@ cleanup_sunrpc(void)
#ifdef CONFIG_PROC_FS
rpc_proc_exit();
#endif
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
MODULE_LICENSE("GPL");
module_init(init_sunrpc);