Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/cifs/export.c b/fs/cifs/export.c
index ce8b7f6..eb0bb8c 100644
--- a/fs/cifs/export.c
+++ b/fs/cifs/export.c
@@ -24,7 +24,7 @@
  */
 
  /*
-  * See Documentation/filesystems/nfs/Exporting
+  * See Documentation/filesystems/nfs/exporting.rst
   * and examples in fs/exportfs
   *
   * Since cifs is a network file system, an "fsid" must be included for