Index: sys/vm/vm_object.h
===================================================================
--- sys/vm/vm_object.h
+++ sys/vm/vm_object.h
@@ -175,6 +175,7 @@
 #define	OBJ_NOSPLIT	0x0010		/* dont split this object */
 #define	OBJ_UMTXDEAD	0x0020		/* umtx pshared was terminated */
 #define	OBJ_PIPWNT	0x0040		/* paging in progress wanted */
+#define	OBJ_PG_DTOR	0x0080		/* dont reset object, leave that for dtor */
 #define	OBJ_MIGHTBEDIRTY 0x0100		/* object might be dirty, only for vnode */
 #define	OBJ_TMPFS_NODE	0x0200		/* object belongs to tmpfs VREG node */
 #define	OBJ_TMPFS_DIRTY	0x0400		/* dirty tmpfs obj */
Index: sys/vm/vm_object.c
===================================================================
--- sys/vm/vm_object.c
+++ sys/vm/vm_object.c
@@ -746,40 +746,45 @@
 		("vm_object_terminate: object with references, ref_count=%d",
 		object->ref_count));
 
-	/*
-	 * Free any remaining pageable pages.  This also removes them from the
-	 * paging queues.  However, don't free wired pages, just remove them
-	 * from the object.  Rather than incrementally removing each page from
-	 * the object, the page and object are reset to any empty state. 
-	 */
-	TAILQ_FOREACH_SAFE(p, &object->memq, listq, p_next) {
-		vm_page_assert_unbusied(p);
-		vm_page_lock(p);
+	if ((object->flags & OBJ_PG_DTOR) == 0) {
 		/*
-		 * Optimize the page's removal from the object by resetting
-		 * its "object" field.  Specifically, if the page is not
-		 * wired, then the effect of this assignment is that
-		 * vm_page_free()'s call to vm_page_remove() will return
-		 * immediately without modifying the page or the object.
-		 */ 
-		p->object = NULL;
-		if (p->wire_count == 0) {
-			vm_page_free(p);
-			VM_CNT_INC(v_pfree);
+		 * Free any remaining pageable pages.  This also removes them
+		 * from the paging queues.  However, don't free wired pages,
+		 * just remove them from the object.  Rather than incrementally
+		 * removing each page from the object, the page and object are
+		 * reset to any empty state. 
+		 */
+		TAILQ_FOREACH_SAFE(p, &object->memq, listq, p_next) {
+			vm_page_assert_unbusied(p);
+			vm_page_lock(p);
+			/*
+			 * Optimize the page's removal from the object by
+			 * resetting its "object" field.  Specifically, if
+			 * the page is not wired, then the effect of this
+			 * assignment is that vm_page_free()'s call to
+			 * vm_page_remove() will return immediately without
+			 * modifying the page or the object.
+			 */
+			p->object = NULL;
+			if (p->wire_count == 0) {
+				vm_page_free(p);
+				VM_CNT_INC(v_pfree);
+			}
+			vm_page_unlock(p);
+		}
+		/*
+		 * If the object contained any pages, then reset it to an
+		 * empty state.  None of the object's fields, including
+		 * "resident_page_count", were modified by the preceding
+		 * loop.
+		 */
+		if (object->resident_page_count != 0) {
+			vm_radix_reclaim_allnodes(&object->rtree);
+			TAILQ_INIT(&object->memq);
+			object->resident_page_count = 0;
+			if (object->type == OBJT_VNODE)
+				vdrop(object->handle);
 		}
-		vm_page_unlock(p);
-	}
-	/*
-	 * If the object contained any pages, then reset it to an empty state.
-	 * None of the object's fields, including "resident_page_count", were
-	 * modified by the preceding loop.
-	 */
-	if (object->resident_page_count != 0) {
-		vm_radix_reclaim_allnodes(&object->rtree);
-		TAILQ_INIT(&object->memq);
-		object->resident_page_count = 0;
-		if (object->type == OBJT_VNODE)
-			vdrop(object->handle);
 	}
 
 #if VM_NRESERVLEVEL > 0