Merge tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh...

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

diff --git a/mm/migrate.c b/mm/migrate.c
index a65ff72ab7392e291ab69b45cd1d14ac0c16e27b..f53838fe3dfe6e84868b86eb98fedf7abd384ffb 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -537,7 +537,8 @@ void migrate_page_copy(struct page *newpage, struct page *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);
+       if (PageSwapCache(page))
+               ClearPageSwapCache(page);
        ClearPagePrivate(page);
        set_page_private(page, 0);