X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fmigrate.c;h=f53838fe3dfe6e84868b86eb98fedf7abd384ffb;hb=d56a669ca59c37ed0a7282a251b2f2f22533343a;hp=a65ff72ab7392e291ab69b45cd1d14ac0c16e27b;hpb=c3a416a669eb83cfa9ccb52db030e72d654bd105;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/migrate.c b/mm/migrate.c
index a65ff72ab739..f53838fe3dfe 100644
--- 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);