diff options
| author | Matias Bjørling <matias.bjorling@wdc.com> | 2020-06-29 12:06:37 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-07-08 16:16:19 +0200 |
| commit | 82394db7383d33641f3f565bd79792fb41b1741f (patch) | |
| tree | a7cd00ad8a1ed5588578ac4c6894fe2c582c5327 /block | |
| parent | f5af577d553103115579b5e404070dfab4d00332 (diff) | |
block: add capacity field to zone descriptors
In the zoned storage model, the sectors within a zone are typically all
writeable. With the introduction of the Zoned Namespace (ZNS) Command
Set in the NVM Express organization, the model was extended to have a
specific writeable capacity.
Extend the zone descriptor data structure with a zone capacity field to
indicate to the user how many sectors in a zone are writeable.
Introduce backward compatibility in the zone report ioctl by extending
the zone report header data structure with a flags field to indicate if
the capacity field is available.
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-zoned.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 23831fa8701d..81152a260354 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -312,6 +312,7 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode, return ret; rep.nr_zones = ret; + rep.flags = BLK_ZONE_REP_CAPACITY; if (copy_to_user(argp, &rep, sizeof(struct blk_zone_report))) return -EFAULT; return 0; |