Merge branch 'tip/rtmutex' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into core/locking

*git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace tip/rtmutex:
   rtmutex: Simplify PI algorithm and make highest prio task get lock

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 5086bb962b4d..7ea2e033d715 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -736,10 +736,11 @@ next:
                 }
         }
         /*
-         * The iftag must have been set somewhere because otherwise
-         * we would return immediated at the beginning of the function
+         * We need not to tag the root tag if there is no tag which is set with
+         * settag within the range from *first_indexp to last_index.
          */
-        root_tag_set(root, settag);
+        if (tagged > 0)
+                root_tag_set(root, settag);
         *first_indexp = index;
 
         return tagged;