mm: simplify find_vma_prev()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / migrate.c

diff --git a/mm/migrate.c b/mm/migrate.c
index 177aca4..594dc37 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -269,12 +269,12 @@ static int migrate_page_move_mapping(struct address_space *mapping,
 
        radix_tree_replace_slot(pslot, newpage);
 
-       page_unfreeze_refs(page, expected_count);
        /*
-        * Drop cache reference from old page.
+        * Drop cache reference from old page by unfreezing
+        * to one less reference.
         * We know this isn't the last reference.
         */
-       __put_page(page);
+       page_unfreeze_refs(page, expected_count - 1);
 
        /*
         * If moved to a different zone then also account
@@ -334,9 +334,7 @@ int migrate_huge_page_move_mapping(struct address_space *mapping,
 
        radix_tree_replace_slot(pslot, newpage);
 
-       page_unfreeze_refs(page, expected_count);
-
-       __put_page(page);
+       page_unfreeze_refs(page, expected_count - 1);
 
        spin_unlock_irq(&mapping->tree_lock);
        return 0;