net: fib: fix incorrect call_rcu_bh()
authorEric Dumazet <edumazet@google.com>
Tue, 7 Aug 2012 00:47:11 +0000 (00:47 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 8 Aug 2012 22:57:46 +0000 (15:57 -0700)
After IP route cache removal, I believe rcu_bh() has very little use and
we should remove this RCU variant, since it adds some cycles in fast
path.

Anyway, the call_rcu_bh() use in fib_true is obviously wrong, since
some users only assert rcu_read_lock().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/fib_trie.c

index f0cdb30921c0bdb5b1639e15d05908dfde6586f9..57bd978483e1fe47a96c964f356432e51e62d6b7 100644 (file)
@@ -367,7 +367,7 @@ static void __leaf_free_rcu(struct rcu_head *head)
 
 static inline void free_leaf(struct leaf *l)
 {
-       call_rcu_bh(&l->rcu, __leaf_free_rcu);
+       call_rcu(&l->rcu, __leaf_free_rcu);
 }
 
 static inline void free_leaf_info(struct leaf_info *leaf)