[PATCH 0/3] btrfs: zoned: limitt active zones to max_open_zones

[Naohiro Aota <naohiro.aota@wdc.com>]

When there is no active zone limit, we can technically write into any
number of zones at the same time. However, exceeding the max open zones
can degrade performance. To prevent this, this series set the
max_active_zones to bdev_max_open_zones() if there is no active zone
limit.

Using max_open_zones as an active zone limit enables the active zone
tracking and enforcement on SMR too. The revealed some bugs on the
active zone tracking. This series also includes the fixes for them.

Naohiro Aota (3):
  btrfs: zoned: do not select metadata BG as finish target
  btrfs: zoned: fix write time activation failure for metadata block
    group
  btrfs: zoned: limit active zones to max_open_zones

 fs/btrfs/zoned.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

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2.50.0