Re: [PATCH v2 00/17] ZNS Support for Btrfs

On Thu, Aug 19, 2021 at 09:19:07PM +0900, Naohiro Aota wrote:

This series extends zoned support for Zoned Namespace (ZNS) SSDs [1].

[1] https://zonedstorage.io/introduction/zns/

This series is available on GitHub at
v1    https://github.com/naota/linux/tree/btrfs-zns-v1
HEAD  https://github.com/naota/linux/tree/btrfs-zns

The ZNS specification introduces extra functionalities listed below.

  - No conventional zones
  - Zone Append write command
  - Zone Capacity
  - Active Zones


Naohiro Aota (17):
  btrfs: zoned: load zone capacity information from devices
  btrfs: zoned: move btrfs_free_excluded_extents out from
    btrfs_calc_zone_unusable
  btrfs: zoned: calculate free space from zone capacity
  btrfs: zoned: tweak reclaim threshold for zone capacity
  btrfs: zoned: consider zone as full when no more SB can be written
  btrfs: zoned: locate superblock position using zone capacity
  btrfs: zoned: finish superblock zone once no space left for new SB
  btrfs: zoned: load active zone information from devices
  btrfs: zoned: introduce physical_map to btrfs_block_group
  btrfs: zoned: implement active zone tracking
  btrfs: zoned: load active zone info for block group
  btrfs: zoned: activate block group on allocation
  btrfs: zoned: activate new block group
  btrfs: move ffe_ctl one level up
  btrfs: zoned: avoid chunk allocation if active block group has enough
    space
  btrfs: zoned: finish fully written block group
  btrfs: zoned: finish relocating block group

This is contained in the zoned mode and I don't see much reason to hold
it back, so it's in misc-next now. I've fixed some minor style issues.
In case there are small fixups worth folding please let me know,
otherwise please send separate patches. Thanks.