> - cmd->iocb.ki_complete = lo_rw_aio_complete;
> - cmd->iocb.ki_flags = IOCB_DIRECT;
> +
> cmd->iocb.ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0);
> + if (!cmd->use_dio) {
> + atomic_set(&cmd->ref, 1);
> + cmd->iocb.ki_flags = 0;
> + cmd->ret = lo_call_backing_rw_iter(file, &cmd->iocb, &iter, rw);
> + lo_rw_aio_do_completion(cmd);
> + return 0;
> + }
I don't think we even need the special casing. If you just use the
AIO path here for buffered I/O it will do the same for you at the
small price of an extra refcount operation.
FYI, this seems to be against a kernel that still has cryptoloop/transfers.
