diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -215,6 +215,7 @@
 } vm_page_astate_t;
 
 struct vm_page {
+	vm_pindex_t pindex;		/* offset into object (O,P) */
 	union {
 		TAILQ_ENTRY(vm_page) q; /* page queue or free list (Q) */
 		struct {
@@ -229,12 +230,17 @@
 			void *zone;
 		} uma;
 	} plinks;
+	u_int ref_count;		/* page references (A) */
+	u_int busy_lock;		/* busy owners lock (A) */
+	/*
+	 * Fields before this are available for use by the consumer when
+	 * allocating noobj pages.  The ref_count field must be restored
+	 * before the page can be freed.
+	 */
+#define	vm_page_end_opaque		object
 	vm_object_t object;		/* which object am I in (O) */
-	vm_pindex_t pindex;		/* offset into object (O,P) */
 	vm_paddr_t phys_addr;		/* physical address of page (C) */
 	struct md_page md;		/* machine dependent stuff */
-	u_int ref_count;		/* page references (A) */
-	u_int busy_lock;		/* busy owners lock (A) */
 	union vm_page_astate a;		/* state accessed atomically (A) */
 	uint8_t order;			/* index of the buddy queue (F) */
 	uint8_t pool;			/* vm_phys freepool index (F) */