btrfs: also add stripe entries for NOCOW writes

btrfs: also add stripe entries for NOCOW writes

NOCOW writes do not generate stripe_extent entries in the RAID stripe
tree, as the RAID stripe-tree feature initially was designed with a
zoned filesystem in mind and on a zoned filesystem, we do not allow NOCOW
writes. But the RAID stripe-tree feature is independent from the zoned
feature, so we must also do NOCOW writes for RAID stripe-tree filesystems.

Reviewed-by: Naohiro Aota <[email protected]>
Signed-off-by: Johannes Thumshirn <[email protected]>
Signed-off-by: David Sterba <[email protected]>