ksm: make KSM page migration possible

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

diff --git a/mm/migrate.c b/mm/migrate.c
index de5c371..e545ce7 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -464,7 +464,10 @@ void migrate_page_copy(struct page *newpage, struct page *page)
 
        mlock_migrate_page(newpage, page);
        ksm_migrate_page(newpage, page);
-
+       /*
+        * Please do not reorder this without considering how mm/ksm.c's
+        * get_ksm_page() depends upon ksm_migrate_page() and PageSwapCache().
+        */
        ClearPageSwapCache(page);
        ClearPagePrivate(page);
        set_page_private(page, 0);