null_blk: don't finish zones to set them read-only or offline

null_set_zone_cond() calls null_finish_zone() to release the zone
resources held by a zone before setting it read-only or offline.

For an empty or closed zone, null_finish_zone() first runs the zone
resource checks, which can close an unrelated implicitly open zone, or
fail. As the error is ignored, a failure for a closed zone leaks
nr_zones_closed, permanently lowering the effective active zone limit.

Setting a zone read-only or offline requires no zone resources, so
release the zone resources held by the zone directly instead, using a
new helper, null_release_zone_resources().

Fixes: d3a5738849e0 ("null_blk: support read-only and offline zone conditions")
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20261022092158.2248831-7-cassel@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

0 files changed, 0 insertions, 0 deletions