+#define YAFFS_TRACE_ERROR 0x0001
+#define YAFFS_TRACE_OS 0x0002
+#define YAFFS_TRACE_ALLOCATE 0x0004
+#define YAFFS_TRACE_SCAN 0x0008
+#define YAFFS_TRACE_BAD_BLOCKS 0x0010
+#define YAFFS_TRACE_ERASE 0x0020
+#define YAFFS_TRACE_TRACING 0x0100
+#define YAFFS_TRACE_ALWAYS 0x0200
+#define YAFFS_TRACE_BUG 0x8000