Merge commit 'v2.6.38-rc4' into x86/cpu

Merge reason: pick up the latest fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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;