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net: reintroduce missing rcu_assign_pointer() calls

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commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to
RCU_INIT_POINTER) did a lot of incorrect changes, since it did a
complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x,
y).

We miss needed barriers, even on x86, when y is not NULL.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2012-01-12 04:41:32 +00:00
committed by David S. Miller
parent 9ee6045f09
commit cf778b00e9
32 changed files with 61 additions and 63 deletions
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net/socket.c
+1 -1
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@@ -2492,7 +2492,7 @@ int sock_register(const struct net_proto_family *ops)
lockdep_is_held(&net_family_lock)))
err = -EEXIST;
else {
RCU_INIT_POINTER(net_families[ops->family], ops);
rcu_assign_pointer(net_families[ops->family], ops);
err = 0;
}
spin_unlock(&net_family_lock);