On Fri, Feb 24, 2017 at 11:42:39PM +0800, Ming Lei wrote: > MD need this helper to remove the last added page, so introduce > it. If MD really has a valid use case for this it should open code the operation. The semantics look deeply fishy to me. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html