rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.
Convert all rcu_assign_pointer of NULL value.
//smpl
@@ expression P; @@
- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)
// </smpl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 7dec88a..e58aa9b 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1125,7 +1125,7 @@
if (help && help->helper) {
/* we had a helper before ... */
nf_ct_remove_expectations(ct);
- rcu_assign_pointer(help->helper, NULL);
+ RCU_INIT_POINTER(help->helper, NULL);
}
return 0;
@@ -1163,7 +1163,7 @@
return -EOPNOTSUPP;
}
- rcu_assign_pointer(help->helper, helper);
+ RCU_INIT_POINTER(help->helper, helper);
return 0;
}
@@ -1386,7 +1386,7 @@
}
/* not in hash table yet so not strictly necessary */
- rcu_assign_pointer(help->helper, helper);
+ RCU_INIT_POINTER(help->helper, helper);
}
} else {
/* try an implicit helper assignation */