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btrfs: zoned: limit active zones to max_open_zones
authorNaohiro Aota <naohiro.aota@wdc.com>
Wed, 16 Jul 2025 07:59:55 +0000 (16:59 +0900)
committerDavid Sterba <dsterba@suse.com>
Wed, 13 Aug 2025 10:28:58 +0000 (12:28 +0200)
commit04147d8394e80acaaebf0365f112339e8b606c05
treef066d6cc52e2357838e3f7637b13f87ed5ccff7ctree
parent5c4b93f4c8e5c53574c1a48d66a27a2c68b414afcommit | diff
btrfs: zoned: limit active zones to max_open_zones

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, set the max_active_zones to
bdev_max_open_zones() if there is no active zone limit.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/zoned.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)