rw_verify_area
ret = rw_verify_area(READ, file, &req->ki_pos, iov_iter_count(&iter));
ret = rw_verify_area(WRITE, file, &req->ki_pos, iov_iter_count(&iter));
ret = rw_verify_area(READ, file, &pos, args.len);
ret = rw_verify_area(WRITE, file, &pos, args.len);
ret = rw_verify_area(READ, file, &pos, data->args.len);
ret = rw_verify_area(WRITE, file, &pos, data->args.len);
host_err = rw_verify_area(READ, file, &offset, *count);
error = rw_verify_area(READ, old_file, &old_pos, len);
error = rw_verify_area(WRITE, new_file, &new_pos, len);
ret = rw_verify_area(READ, file, pos, tot_len);
ret = rw_verify_area(WRITE, file, pos, tot_len);
retval = rw_verify_area(READ, fd_file(in), &pos, count);
retval = rw_verify_area(WRITE, fd_file(out), &out_pos, count);
ret = rw_verify_area(READ, file_in, &pos_in, len);
ret = rw_verify_area(WRITE, file_out, &pos_out, len);
EXPORT_SYMBOL(rw_verify_area);
ret = rw_verify_area(READ, file, pos, count);
ret = rw_verify_area(READ, file, pos, count);
ret = rw_verify_area(WRITE, file, pos, count);
ret = rw_verify_area(WRITE, file, pos, count);
ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len);
ret = rw_verify_area(READ, file, ppos, tot_len);
ret = rw_verify_area(WRITE, file, &iocb->ki_pos, tot_len);
ret = rw_verify_area(WRITE, file, ppos, tot_len);
ret = rw_verify_area(READ, in, ppos, len);
ret = rw_verify_area(WRITE, out, &offset, len);
ret = rw_verify_area(READ, in, &offset, len);
int rw_verify_area(int, struct file *, const loff_t *, size_t);
ret = rw_verify_area(WRITE, req->file, ppos, req->cqe.res);
ret = rw_verify_area(READ, req->file, ppos, req->cqe.res);