--- src/sys/sys/stat.h	2005/08/02 13:03:55	1.7
+++ src/sys/sys/stat.h	2005/08/25 18:34:17	1.8
@@ -53,6 +53,14 @@
 #define __dev_t	dev_t
 #endif
 
+/*
+ * stat structure notes:
+ *
+ * (1) st_fsmid (DragonFly only).  This is a DragonFly supported field that
+ *     is incremented if the represented file or directory changes or, for
+ *     directories, if any change is made within the directory or any sub-
+ *     directory, recursively.
+ */
 struct stat {
 	ino_t	  st_ino;		/* inode's number */
 	nlink_t	  st_nlink;		/* number of hard links */
@@ -80,9 +88,12 @@ struct stat {
 	u_int32_t st_flags;		/* user defined flags for file */
 	u_int32_t st_gen;		/* file generation number */
 	int32_t	  st_lspare;
-	int64_t	  st_qspare[2];
+	int64_t   st_fsmid;		/* recursive change detect */
+	int64_t	  st_qspare;
 };
 
+#define _ST_FSMID_PRESENT_
+
 #undef __dev_t
 
 #ifndef _POSIX_SOURCE