sched: Use lockdep-based checking on rcu_dereference()

Update the rcu_dereference() usages to take advantage of the new
lockdep-based checking.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1266887105-1528-6-git-send-email-paulmck@linux.vnet.ibm.com>
[ -v2: fix allmodconfig missing symbol export build failure on x86 ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/notifier.c b/kernel/notifier.c
index acd24e7643eb..2488ba7eb568 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -78,10 +78,10 @@ static int __kprobes notifier_call_chain(struct notifier_block **nl,
         int ret = NOTIFY_DONE;
         struct notifier_block *nb, *next_nb;
 
-        nb = rcu_dereference(*nl);
+        nb = rcu_dereference_raw(*nl);
 
         while (nb && nr_to_call) {
-                next_nb = rcu_dereference(nb->next);
+                next_nb = rcu_dereference_raw(nb->next);
 
 #ifdef CONFIG_DEBUG_NOTIFIERS
                 if (unlikely(!func_ptr_is_kernel_text(nb->notifier_call))) {
@@ -309,7 +309,7 @@ int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
          * racy then it does not matter what the result of the test
          * is, we re-check the list after having taken the lock anyway:
          */
-        if (rcu_dereference(nh->head)) {
+        if (rcu_dereference_raw(nh->head)) {
                 down_read(&nh->rwsem);
                 ret = notifier_call_chain(&nh->head, val, v, nr_to_call,
                                         nr_calls);