diff --git a/[refs] b/[refs]
index 06aadebf29f7..b78e2c961e1c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7551d9a20b3cfbac9f8a28b7d909c4b15a94924f
+refs/heads/master: fd5403c79bc21819f6e0c40ba098cea8b6a418bd
diff --git a/trunk/mm/page-writeback.c b/trunk/mm/page-writeback.c
index 6dcce3a4bbdc..75d7f48b79bb 100644
--- a/trunk/mm/page-writeback.c
+++ b/trunk/mm/page-writeback.c
@@ -72,13 +72,12 @@ int dirty_background_ratio = 10;
 int vm_dirty_ratio = 40;
 
 /*
- * The interval between `kupdate'-style writebacks, in centiseconds
- * (hundredths of a second)
+ * The interval between `kupdate'-style writebacks, in jiffies
  */
 int dirty_writeback_interval = 5 * HZ;
 
 /*
- * The longest number of centiseconds for which data is allowed to remain dirty
+ * The longest number of jiffies for which data is allowed to remain dirty
  */
 int dirty_expire_interval = 30 * HZ;