2 files changed, 4 insertions, 0 deletions

diff --git a/sys/sys/disk.h b/sys/sys/disk.h
index 855670dfa420..249264adf5b5 100644
--- a/sys/sys/disk.h
+++ b/sys/sys/disk.h
@@ -28,6 +28,7 @@ struct disk {
 	dev_t			d_dev;
 	struct diskslices	*d_slice;
 	struct disklabel	d_label;
+	LIST_ENTRY(disk)	d_list;
 };
 
 #define DISKFLAG_LOCK		0x1
diff --git a/sys/sys/disklabel.h b/sys/sys/disklabel.h
index b9d4da20e3d1..620edc7151d8 100644
--- a/sys/sys/disklabel.h
+++ b/sys/sys/disklabel.h
@@ -431,6 +431,9 @@ struct dos_partition {
     |    TYPE     |UNIT_2 | SLICE   |  MAJOR?       |  UNIT   |PART |
     -----------------------------------------------------------------
 */
+
+#define DKMAXUNIT 0x1ff		/* Highest disk unit number */
+
 #define	dkmakeminor(unit, slice, part) \
 				(((slice) << 16) | (((unit) & 0x1e0) << 16) | \
 				(((unit) & 0x1f) << 3) | (part))