On Sat, Oct 12, 2024 at 04:53:25PM +0800, Ming Lei wrote: > +int io_import_group_kbuf(struct io_kiocb *req, unsigned long buf_off, > + unsigned int len, int dir, struct iov_iter *iter) > +{ > + struct io_kiocb *lead = req->grp_link; This works since grp_link and grp_leader are in a union together, but this should really be req->grp_leader, right?