* Added a TODO about a problematic use of vm_page_allocate_page() in combination

with vm_cache_acquire_locked_page_cache().
* Added new function vm_page_num_unused_pages() which returns the pages that are
  actually completely free and unused.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30514 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/vm_page.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2008, Axel Dörfler, [email protected].
+ * Copyright 2002-2009, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  *
  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@@ -35,6 +35,7 @@ void vm_page_requeue(struct vm_page *page, bool tail);
 size_t vm_page_num_pages(void);
 size_t vm_page_num_free_pages(void);
 size_t vm_page_num_available_pages(void);
+size_t vm_page_num_unused_pages(void);
 void vm_page_get_stats(system_info *info);
 
 status_t vm_page_write_modified_page_range(struct VMCache *cache,