[FIB_TRIE]: Fix leaf freeing.

Seems like leaf (end-nodes) has been freed by __tnode_free_rcu and not
by __leaf_free_rcu. This fixes the problem. Only tnode_free is now
used which checks for appropriate node type. free_leaf can be removed.

Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index ccd3efc6a173bc45ad189a9bca84d76d594f9eff..95a639f2e3dbc654df393c3f985b20c4fa036560 100644 (file)
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -50,7 +50,7 @@
  *             Patrick McHardy <kaber@trash.net>
  */
 
-#define VERSION "0.406"
+#define VERSION "0.407"
 
 #include <linux/config.h>
 #include <asm/uaccess.h>
@@ -314,11 +314,6 @@ static void __leaf_free_rcu(struct rcu_head *head)
        kfree(container_of(head, struct leaf, rcu));
 }
 
-static inline void free_leaf(struct leaf *leaf)
-{
-       call_rcu(&leaf->rcu, __leaf_free_rcu);
-}
-
 static void __leaf_info_free_rcu(struct rcu_head *head)
 {
        kfree(container_of(head, struct leaf_info, rcu));
@@ -357,7 +352,12 @@ static void __tnode_free_rcu(struct rcu_head *head)
 
 static inline void tnode_free(struct tnode *tn)
 {
-       call_rcu(&tn->rcu, __tnode_free_rcu);
+       if(IS_LEAF(tn)) {
+               struct leaf *l = (struct leaf *) tn;
+               call_rcu_bh(&l->rcu, __leaf_free_rcu);
+       }
+        else
+               call_rcu(&tn->rcu, __tnode_free_rcu);
 }
 
 static struct leaf *leaf_new(void)