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| author |   Niklas Cassel <niklas.cassel@wdc.com> | 2020-07-14 23:18:23 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-07-15 14:26:11 -0600 |
| commit | e15864f8ea05b24071b07300459ae7e511d0b938 (patch) | |
| tree | c1c7d77dc70542e0fbfba3694d309f0c18bfc8fd /Documentation/ABI/testing/sysfs-block | |
| parent | Merge branch 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.9/drivers (diff) | |
| download | linux-dev-e15864f8ea05b24071b07300459ae7e511d0b938.tar.xz linux-dev-e15864f8ea05b24071b07300459ae7e511d0b938.zip | |
block: add max_open_zones to blk-sysfs
Add a new max_open_zones definition in the sysfs documentation.
This definition will be common for all devices utilizing the zoned block
device support in the kernel.
Export max open zones according to this new definition for NVMe Zoned
Namespace devices, ZAC ATA devices (which are treated as SCSI devices by
the kernel), and ZBC SCSI devices.
Add the new max_open_zones member to struct request_queue, rather
than as a queue limit, since this property cannot be split across stacking
drivers.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Javier González <javier@javigon.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-block')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block index ed8c14f161ee..f151d9cf90de 100644 --- a/Documentation/ABI/testing/sysfs-block +++ b/Documentation/ABI/testing/sysfs-block @@ -273,6 +273,15 @@ Description: device ("host-aware" or "host-managed" zone model). For regular block devices, the value is always 0. +What: /sys/block/<disk>/queue/max_open_zones +Date: July 2020 +Contact: Niklas Cassel <niklas.cassel@wdc.com> +Description: + For zoned block devices (zoned attribute indicating + "host-managed" or "host-aware"), the sum of zones belonging to + any of the zone states: EXPLICIT OPEN or IMPLICIT OPEN, + is limited by this value. If this value is 0, there is no limit. + What: /sys/block/<disk>/queue/chunk_sectors Date: September 2016 Contact: Hannes Reinecke <hare@suse.com> |