du always reported the size in 1k blocks even when -b specified a different size.
.

Notes:
Mon Nov 27 11:14:05 EST 2006 geoff
    there's a new du coming that fixes this, once I sort
    out the new options.


Reference: /n/sources/patch/sorry/du-b
Date: Mon Nov 20 20:26:36 CET 2006
Signed-off-by: andrey@lanl.gov
Reviewed-by: geoff

--- /sys/src/cmd/du.c	Mon Nov 20 20:25:44 2006
+++ /sys/src/cmd/du.c	Mon Nov 20 20:25:38 2006
@@ -209,5 +209,5 @@
 	if(nflag)
 		return n;
 	n = (n+blocksize-1)/blocksize;
-	return n*blocksize/1024LL;
+	return n;
 }