vm_page_seg_evict: Fix creating a pager for internal objects with DMM

fd63a4bbf6f2 ("vm_page: Avoid creating a pager in DMM when not
double-paging") avoided crashes when we do not have a DMM and wish to evict
an internal opbject. But the double_paging condition was too restrictive and
prevented normal internal objects from paging out when we do have a DMM.

This re-enables creating a pager when we do have a DMM, so internal
objects can be paged out.

1 files changed, 11 insertions, 8 deletions

diff --git a/vm/vm_page.c b/vm/vm_page.c
index 74764e34..6c5eba22 100644
--- a/vm/vm_page.c
+++ b/vm/vm_page.c
@@ -1213,16 +1213,19 @@ out:
      * one unnecessarily.
      */
 
-    if (double_paging && !object->pager_initialized) {
-        vm_object_collapse(object);
-    }
+    if (IP_VALID(memory_manager_default)) {
 
-    if (double_paging && !object->pager_initialized) {
-        vm_object_pager_create(object);
-    }
+        if (!object->pager_initialized) {
+            vm_object_collapse(object);
+        }
 
-    if (double_paging && !object->pager_initialized) {
-        panic("vm_page_seg_evict");
+        if (!object->pager_initialized) {
+            vm_object_pager_create(object);
+        }
+
+        if (!object->pager_initialized) {
+            panic("vm_page_seg_evict");
+        }
     }
 
     vm_pageout_page(page, FALSE, TRUE); /* flush it */