> + if (dio->dops && dio->dops->submit_io) {
> + dio->dops->submit_io(bio, file_inode(dio->iocb->ki_filp),
> + pos);
pos would still fit on the previously line as-is.
> + dio->submit.cookie = BLK_QC_T_NONE;
But I think you should return the cookie from the submit function for
completeness, even if btrfs would currently always return BLK_QC_T_NONE.
