diff -uNr a/src/gm_s86dl.h b/src/gm_s86dl.h
--- a/src/gm_s86dl.h	2015-11-24 05:03:45.000000000 -0600
+++ b/src/gm_s86dl.h	2021-05-24 17:33:38.000000000 -0500
@@ -17,6 +17,7 @@
 #ifndef _GM_S86DL_H
 #define _GM_S86DL_H
 
+#include <linux/types.h>
 
 #define SOLARIS_X86_NUMSLICE		8
 #define SOLARIS_X86_VTOC_SANE		(0x600DDEEEUL)
@@ -40,7 +41,7 @@
 struct solaris_x86_slice {
 	ushort	s_tag;			/* ID tag of partition */
 	ushort	s_flag;			/* permision flags */
-	daddr_t s_start;		/* start sector no of partition */
+	__kernel_daddr_t s_start;	/* start sector no of partition */
 	long	s_size;			/* # of blocks in partition */
 };