On Tue, Mar 10, 2020 at 06:46:51PM +0900, Johannes Thumshirn wrote: > From: Damien Le Moal <damien.lemoal@xxxxxxx> > > Not all zoned block devices natively support the zone append command. > E.g. SCSI and ATA disks do not define this command. However, it is > fairly straightforward to emulate this command at the LLD level using > regular write commands if a zone write pointer position is known. > Introducing such emulation enables the use of zone append write for all > device types, therefore simplifying for instance the implementation of > file systems zoned block device support by avoiding the need for > different write pathes depending on the device capabilities. I'd much rather have this in the driver itself than in the block layer. Especially as sd will hopefully remain the only users.
