diff -up kexec-tools-2.0.0/makedumpfile/makedumpfile.8.orig kexec-tools-2.0.0/makedumpfile/makedumpfile.8
--- kexec-tools-2.0.0/makedumpfile/makedumpfile.8.orig	2008-06-05 01:31:22.000000000 -0400
+++ kexec-tools-2.0.0/makedumpfile/makedumpfile.8	2008-12-01 11:06:41.000000000 -0500
@@ -73,6 +73,15 @@ data in the flattened format needs to be
 .SH OPTIONS
 
 .TP
+\fB\-b\fR
+Specify cache block order.
+.br
+makedumpfile attempts to accelerate dumping by caching disk access to ram, in an
+effort to consolidate writes.  The size of the application cached used for this
+purpose is controlled by this option.  It specifys that 2^b pages should be used
+for the cache.
+
+.TP
 \fB\-c\fR
 Compress dump data by each page.
 .br