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_helper.c b/net/netfilter/nf_conntrack_helper.c
index 1bdfea3..93c4bdb 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -131,7 +131,7 @@
helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
if (helper == NULL) {
if (help)
- rcu_assign_pointer(help->helper, NULL);
+ RCU_INIT_POINTER(help->helper, NULL);
goto out;
}
@@ -145,7 +145,7 @@
memset(&help->help, 0, sizeof(help->help));
}
- rcu_assign_pointer(help->helper, helper);
+ RCU_INIT_POINTER(help->helper, helper);
out:
return ret;
}
@@ -162,7 +162,7 @@
lockdep_is_held(&nf_conntrack_lock)
) == me) {
nf_conntrack_event(IPCT_HELPER, ct);
- rcu_assign_pointer(help->helper, NULL);
+ RCU_INIT_POINTER(help->helper, NULL);
}
return 0;
}