mm: replace init_page_accessed by __SetPageReferenced

[firefly-linux-kernel-4.4.55.git] / mm / swap.c

diff --git a/mm/swap.c b/mm/swap.c
index 9e8e3472248bb8dfa10107fb212974e1343ffa4a..d8eb4d09ffa2ee72b3ba9e376771abd01e39016b 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -589,6 +589,9 @@ static void __lru_cache_activate_page(struct page *page)
  * inactive,unreferenced       ->      inactive,referenced
  * inactive,referenced         ->      active,unreferenced
  * active,unreferenced         ->      active,referenced
+ *
+ * When a newly allocated page is not yet visible, so safe for non-atomic ops,
+ * __SetPageReferenced(page) may be substituted for mark_page_accessed(page).
  */
 void mark_page_accessed(struct page *page)
 {
@@ -614,17 +617,6 @@ void mark_page_accessed(struct page *page)
 }
 EXPORT_SYMBOL(mark_page_accessed);
 
-/*
- * Used to mark_page_accessed(page) that is not visible yet and when it is
- * still safe to use non-atomic ops
- */
-void init_page_accessed(struct page *page)
-{
-       if (!PageReferenced(page))
-               __SetPageReferenced(page);
-}
-EXPORT_SYMBOL(init_page_accessed);
-
 static void __lru_cache_add(struct page *page)
 {
        struct pagevec *pvec = &get_cpu_var(lru_add_pvec);