On 2/5/24 15:55, Damien Le Moal wrote:
The array of struct blk_zone_wplug for the disk is sized for the total number of zones of the drive. The reason for that is that we want to retain the wp_offset value for all zones, even if they are not being written. Otherwise, everytime we start writing a zone, we would need to do a report zones to be able to emulate zone append operations if the drive requested that.
We do not need to track wp_offset for empty zones nor for full zones. The data structure with plug information would become a lot smaller if it only tracks information for zones that are neither empty nor full. If a zone append is submitted to a zone and no information is being tracked for that zone, we can initialize wp_offset to zero. That may not match the actual write pointer if the zone is full but that shouldn't be an issue since write appends submitted to a zone that is full fail anyway. Thanks, Bart.
