Make the version-4 ioctl interface the default kernel configuration option.
--- a/drivers/md/Kconfig 2003-09-23 10:50:15.000000000 -0500
+++ b/drivers/md/Kconfig 2003-09-23 10:50:05.000000000 -0500
@@ -138,6 +138,7 @@
config DM_IOCTL_V4
bool "ioctl interface version 4"
depends on BLK_DEV_DM
+ default y
---help---
Recent tools use a new version of the ioctl interface, only
select this option if you intend using such tools.
