--- projects/libstatgrab/src/libstatgrab/disk_stats.c	2004/11/06 23:54:12	1.78
+++ projects/libstatgrab/src/libstatgrab/disk_stats.c	2004/11/07 15:06:49	1.79
@@ -18,7 +18,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  * 02111-1307 USA
  *
- * $Id: disk_stats.c,v 1.78 2004/11/06 23:54:12 tdb Exp $
+ * $Id: disk_stats.c,v 1.79 2004/11/07 15:06:49 ats Exp $
  */
 
 #ifdef HAVE_CONFIG_H
@@ -392,8 +392,11 @@ sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
 			}
 	
 			/* We can't seperate the reads from the writes, we'll
-			   just give the same to each. */
-			rbytes = wbytes = di->psd_dkwds / 2;
+			 * just give the same to each. (This value is in
+			 * 64-byte chunks according to the pstat header file,
+			 * and can wrap to be negative.)
+			 */
+			rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL;
 	
 			/* Skip unused disks. */
 			if (rbytes == 0 && wbytes == 0) {