779 	size_t tot_len;  in do_iter_read()  local
787 	tot_len = iov_iter_count(iter);  in do_iter_read()
788 	if (!tot_len)  in do_iter_read()
790 	ret = rw_verify_area(READ, file, pos, tot_len);  in do_iter_read()
807 	size_t tot_len;  in vfs_iocb_iter_read()  local
817 	tot_len = iov_iter_count(iter);  in vfs_iocb_iter_read()
818 	if (!tot_len)  in vfs_iocb_iter_read()
820 	ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len);  in vfs_iocb_iter_read()
844 	size_t tot_len;  in do_iter_write()  local
852 	tot_len = iov_iter_count(iter);  in do_iter_write()
853 	if (!tot_len)  in do_iter_write()
855 	ret = rw_verify_area(WRITE, file, pos, tot_len);  in do_iter_write()
871 	size_t tot_len;  in vfs_iocb_iter_write()  local
881 	tot_len = iov_iter_count(iter);  in vfs_iocb_iter_write()
882 	if (!tot_len)  in vfs_iocb_iter_write()
884 	ret = rw_verify_area(WRITE, file, &iocb->ki_pos, tot_len);  in vfs_iocb_iter_write()