Direct reply without a quote a the formatting of your mail is completely messed up. We don't treat a FUA a a flush. If the device supports FUA is is just passed on. But if the device does not support FUA it is sequenced into doing the write first and then a flush before returning completion to the caller to guarantee the FUA semantics. Because of that the command needs special treatment and be handed over to the flush state machine, but it won't do anything interesting if FUA is actually natively supported.
