This type doesn't exist at all, so no need to forward declare it.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJohannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210920123328.1399408-12-hch@lst.deSigned-off-by: NJens Axboe <axboe@kernel.dk>