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btrfs: zoned: fix btrfs_can_activate_zone() to support DUP profile

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btrfs_can_activate_zone() returns true if at least one device has one zone
available for activation. This is OK for the single profile, but not OK for
DUP profile. We need two zones to create a DUP block group. Fix it by
properly handling the case with the profile flags.

Fixes: 265f7237dd25 ("btrfs: zoned: allow DUP on meta-data block groups")
CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2023-03-13 16:29:49 +09:00 committed by David Sterba
parent 10a8857a1b
commit 9e1cdf0c35
1 changed files with 12 additions and 2 deletions
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14
fs/btrfs/zoned.c
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@ -2086,11 +2086,21 @@ bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags)
if (!device->bdev)
continue;
if (!zinfo->max_active_zones ||
atomic_read(&zinfo->active_zones_left)) {
if (!zinfo->max_active_zones) {
ret = true;
break;
}
switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
case 0: /* single */
ret = (atomic_read(&zinfo->active_zones_left) >= 1);
break;
case BTRFS_BLOCK_GROUP_DUP:
ret = (atomic_read(&zinfo->active_zones_left) >= 2);
break;
}
if (ret)
break;
}
mutex_unlock(&fs_info->chunk_mutex);