On Wed, Jan 15, 2025 at 10:14:56AM +1100, Dave Chinner wrote: > How closely does this match to the block device WRITE_SAME > (SCSI/NVMe) commands? I note there is a reference to this in the > RFC, but there are no details given. There is no write same in NVMe. In one of the few wiѕe choices in NVMe the protocol only does a write zeroes for zeroing instead of the overly complex write zeroes. And no one has complained about that so far.