CHANGES.txt: Move HDFS-9260 to trunk

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -220,6 +220,9 @@ Trunk (Unreleased)
     HDFS-9494. Parallel optimization of DFSStripedOutputStream#flushAllInternals.
     (Gao Rui via jing9)
 
+    HDFS-9260. Improve the performance and GC friendliness of NameNode startup
+    and full block reports (Staffan Friberg via cmccabe)
+
   OPTIMIZATIONS
 
   BUG FIXES
@@ -971,9 +974,6 @@ Release 2.9.0 - UNRELEASED
     HDFS-7764. DirectoryScanner shouldn't abort the scan if one directory had
     an error (Rakesh R via cmccabe)
 
-    HDFS-9260. Improve the performance and GC friendliness of NameNode startup
-    and full block reports (Staffan Friberg via cmccabe)
-
   OPTIMIZATIONS
 
   BUG FIXES