* Renamed vm_page_write_modified() to vm_page_write_modifed_pages() and

introduced a new vm_page_write_modified_page().
* Resolved a TODO: vm_page_write_modified_pages() did not mark a to be
  written page busy but unlocked its cache which could let someone else
  steal that page in the mean time.
* Moved the logic when to move a page to the active or inactive queue to
  a new function move_page_to_active_or_inactive_queue().
* Moved page_state_to_string() to vm_page(); it's now also used by the
  "page" and "page_queue" KDL commands.
* Made the output of the "page_queue list" command more useful.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22323 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/vm_page.h

@@ -32,7 +32,9 @@ status_t vm_page_set_state(vm_page *page, int state);
 size_t vm_page_num_pages(void);
 size_t vm_page_num_free_pages(void);
 
-status_t vm_page_write_modified(vm_cache *cache, bool fsReenter);
+status_t vm_page_write_modified_page(vm_cache *cache, struct vm_page *page,
+	bool fsReenter);
+status_t vm_page_write_modified_pages(vm_cache *cache, bool fsReenter);
 
 void vm_page_unreserve_pages(uint32 count);
 void vm_page_reserve_pages(uint32 count);

headers/private/kernel/vm_priv.h

@@ -50,6 +50,9 @@ void vm_unreserve_memory(size_t bytes);
 status_t vm_try_reserve_memory(size_t bytes);
 status_t vm_daemon_init(void);
 
+const char *page_state_to_string(int state);
+	// for debugging purposes only
+
 #ifdef __cplusplus
 }
 #endif