Merge branch 'master' into for-2.6.35

Conflicts:
	fs/ext3/fsync.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index b1472bc2d49c..ed897b5ef315 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -3741,8 +3741,10 @@ static void *cfq_init_queue(struct request_queue *q)
          * to make sure that cfq_put_cfqg() does not try to kfree root group
          */
         atomic_set(&cfqg->ref, 1);
+        rcu_read_lock();
         blkiocg_add_blkio_group(&blkio_root_cgroup, &cfqg->blkg, (void *)cfqd,
                                         0);
+        rcu_read_unlock();
 #endif
         /*
          * Not strictly needed (since RB_ROOT just clears the node and we