[PATCH 1/2] lockdep missing barrier()

This patch adds a barrier() to lockdep.c lockdep_recursion updates. This
variable behaves like the preemption count and should therefore use similar
memory barriers.

This patch applies on 2.6.20-rc4-git3.

Signed-off-by: Mathieu Desnoyers <[email protected]>

--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -166,12 +166,14 @@ static struct list_head chainhash_table[CHAINHASH_SIZE];
 void lockdep_off(void)
 {
 	current->lockdep_recursion++;
+	barrier();
 }
 
 EXPORT_SYMBOL(lockdep_off);
 
 void lockdep_on(void)
 {
+	barrier();
 	current->lockdep_recursion--;
 }

-- 
OpenPGP public key:              http://krystal.dyndns.org:8080/key/compudj.gpg
Key fingerprint:     8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68