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-rw-r--r--net/ipv4/fib_trie.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 1ff446d0fa8..f6cdc012eec 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -177,10 +177,13 @@ static inline struct tnode *node_parent_rcu(struct node *node)
return rcu_dereference(ret);
}
+/* Same as rcu_assign_pointer
+ * but that macro() assumes that value is a pointer.
+ */
static inline void node_set_parent(struct node *node, struct tnode *ptr)
{
- rcu_assign_pointer(node->parent,
- (unsigned long)ptr | NODE_TYPE(node));
+ smp_wmb();
+ node->parent = (unsigned long)ptr | NODE_TYPE(node);
}
static inline struct node *tnode_get_child(struct tnode *tn, unsigned int i)