/* migrate_prep() needs to be called before we start compiling a list of pages to be migrated using isolate_lru_page().  */
int migrate_prep(void)
/* migrate_prep() needs to be called before we start compiling a list of pages to be migrated using isolate_lru_page().  */
int migrate_prep(void)
{
	lru_add_drain_all();
	return 0;
}