On Tue, Aug 10, 2021 at 10:37:25AM -0600, Jens Axboe wrote: > We don't need a separate member in io_rw for this, we can just use the > kiocb->private field as we're not using it for anything else anyway. > This saves 8 bytes in io_rw, which we'll be needing once kiocb grows > a new member. ->private is owned by the file_operations instance, not the caller. So this can't work.