Hannes Reinecke 6a0cb1bc10
block: Implement support for zoned block devices ...
Implement zoned block device zone information reporting and reset.
Zone information are reported as struct blk_zone. This implementation
does not differentiate between host-aware and host-managed device
models and is valid for both. Two functions are provided:
blkdev_report_zones for discovering the zone configuration of a
zoned block device, and blkdev_reset_zones for resetting the write
pointer of sequential zones. The helper function blk_queue_zone_size
and bdev_zone_size are also provided for, as the name suggest,
obtaining the zone size (in 512B sectors) of the zones of the device.
Signed-off-by: Hannes Reinecke <hare@suse.de >
[Damien: * Removed the zone cache
* Implement report zones operation based on earlier proposal
by Shaun Tancheff <shaun.tancheff@seagate.com >]
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com >
Reviewed-by: Christoph Hellwig <hch@lst.de >
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com >
Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com >
Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com >
Signed-off-by: Jens Axboe <axboe@fb.com >
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