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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2012-01-12 04:41:32 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-12 12:26:56 -0800 |
| commit | cf778b00e96df6d64f8e21b8395d1f8a859ecdc7 (patch) | |
| tree | 4cc157d564bd65d687bdf722af3202e9e277ea98 /net/ipv6/sit.c | |
| parent | 9ee6045f09a7875ebe55b9942b232a19076b157b (diff) | |
| download | linux-rt-cf778b00e96df6d64f8e21b8395d1f8a859ecdc7.tar.gz | |
net: reintroduce missing rcu_assign_pointer() calls
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>
Diffstat (limited to 'net/ipv6/sit.c')
| -rw-r--r-- | net/ipv6/sit.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 3b6dac956bb0..133768e52912 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -182,7 +182,7 @@ static void ipip6_tunnel_unlink(struct sit_net *sitn, struct ip_tunnel *t) (iter = rtnl_dereference(*tp)) != NULL; tp = &iter->next) { if (t == iter) { - RCU_INIT_POINTER(*tp, t->next); + rcu_assign_pointer(*tp, t->next); break; } } @@ -192,8 +192,8 @@ static void ipip6_tunnel_link(struct sit_net *sitn, struct ip_tunnel *t) { struct ip_tunnel __rcu **tp = ipip6_bucket(sitn, t); - RCU_INIT_POINTER(t->next, rtnl_dereference(*tp)); - RCU_INIT_POINTER(*tp, t); + rcu_assign_pointer(t->next, rtnl_dereference(*tp)); + rcu_assign_pointer(*tp, t); } static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn) @@ -393,7 +393,7 @@ ipip6_tunnel_add_prl(struct ip_tunnel *t, struct ip_tunnel_prl *a, int chg) p->addr = a->addr; p->flags = a->flags; t->prl_count++; - RCU_INIT_POINTER(t->prl, p); + rcu_assign_pointer(t->prl, p); out: return err; } @@ -1177,7 +1177,7 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev) if (!dev->tstats) return -ENOMEM; dev_hold(dev); - RCU_INIT_POINTER(sitn->tunnels_wc[0], tunnel); + rcu_assign_pointer(sitn->tunnels_wc[0], tunnel); return 0; } |