Mark caches of null areas temporary, so we don't try to write back modified

pages when deleting the area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37194 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/vm/vm.cpp

@@ -1642,6 +1642,7 @@ vm_create_null_area(team_id team, const char* name, void** address,
 	// tell the page scanner to skip over this area, no pages will be mapped
 	// here
 	cache->scan_skip = 1;
+	cache->temporary = 1;
 	cache->virtual_end = size;
 
 	cache->Lock();