* 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);