On Wed, Mar 11, 2020 at 12:37:33AM +0000, Damien Le Moal wrote: > I do not think we can get rid of it entirely as it is needed for applications > using regular writes on raw zoned block devices. But the zone write locking will > be completely bypassed for zone append writes issued by file systems. But applications that are aware of zones should not be sending multiple write commands to a zone anyway. We certainly can't use zone write locking for nvme if we want to be able to use multiple queues.