mount options: fix udf

Add a .show_options super operation to udf.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index d9adb0f..737d1c6 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -26,6 +26,8 @@
 #define UDF_FLAG_GID_IGNORE     14
 #define UDF_FLAG_UID_SET	15
 #define UDF_FLAG_GID_SET	16
+#define UDF_FLAG_SESSION_SET	17
+#define UDF_FLAG_LASTBLOCK_SET	18
 
 #define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
 #define UDF_PART_FLAG_UNALLOC_TABLE	0x0002