l_read is the length of all of the data read so far. length
is more or less meaningless at this point, so use total_read for
everything.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
“|Ý Ÿ#x