mm: use clear_page_mlock() in page_remove_rmap()

[karo-tx-linux.git] / mm / mlock.c

diff --git a/mm/mlock.c b/mm/mlock.c
index a948be4b7ba7673aa77cf7b537d8a650cd558a15..de73215928978fe096b789075385e914fdb93105 100644 (file)
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -51,13 +51,10 @@ EXPORT_SYMBOL(can_do_mlock);
 /*
  *  LRU accounting for clear_page_mlock()
  */
-void __clear_page_mlock(struct page *page)
+void clear_page_mlock(struct page *page)
 {
-       VM_BUG_ON(!PageLocked(page));
-
-       if (!page->mapping) {   /* truncated ? */
+       if (!TestClearPageMlocked(page))
                return;
-       }
 
        dec_zone_page_state(page, NR_MLOCK);
        count_vm_event(UNEVICTABLE_PGCLEARED);
@@ -290,14 +287,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
                page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP);
                if (page && !IS_ERR(page)) {
                        lock_page(page);
-                       /*
-                        * Like in __mlock_vma_pages_range(),
-                        * because we lock page here and migration is
-                        * blocked by the elevated reference, we need
-                        * only check for file-cache page truncation.
-                        */
-                       if (page->mapping)
-                               munlock_vma_page(page);
+                       munlock_vma_page(page);
                        unlock_page(page);
                        put_page(page);
                }