785 	size_t tot_len;  in do_iter_read()  local
793 	tot_len = iov_iter_count(iter);  in do_iter_read()
794 	if (!tot_len)  in do_iter_read()
796 	ret = rw_verify_area(READ, file, pos, tot_len);  in do_iter_read()
813 	size_t tot_len;  in vfs_iocb_iter_read()  local
823 	tot_len = iov_iter_count(iter);  in vfs_iocb_iter_read()
824 	if (!tot_len)  in vfs_iocb_iter_read()
826 	ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len);  in vfs_iocb_iter_read()
850 	size_t tot_len;  in do_iter_write()  local
858 	tot_len = iov_iter_count(iter);  in do_iter_write()
859 	if (!tot_len)  in do_iter_write()
861 	ret = rw_verify_area(WRITE, file, pos, tot_len);  in do_iter_write()
877 	size_t tot_len;  in vfs_iocb_iter_write()  local
887 	tot_len = iov_iter_count(iter);  in vfs_iocb_iter_write()
888 	if (!tot_len)  in vfs_iocb_iter_write()
890 	ret = rw_verify_area(WRITE, file, &iocb->ki_pos, tot_len);  in vfs_iocb_iter_write()