DLPX-44812 integrate EP-220 large memory scalability

include/sys/ddt.h

@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016 by Delphix. All rights reserved.
  */
 
 #ifndef _SYS_DDT_H
@@ -35,6 +36,8 @@
 extern "C" {
 #endif
 
+struct abd;
+
 /*
  * On-disk DDT formats, in the desired search order (newest version first).
  */
@@ -108,7 +111,7 @@ struct ddt_entry {
 	ddt_key_t	dde_key;
 	ddt_phys_t	dde_phys[DDT_PHYS_TYPES];
 	zio_t		*dde_lead_zio[DDT_PHYS_TYPES];
-	void		*dde_repair_data;
+	struct abd	*dde_repair_abd;
 	enum ddt_type	dde_type;
 	enum ddt_class	dde_class;
 	uint8_t		dde_loading;