Update documentation to refer to DEAL_VOLATILE.

diff --git a/include/deal.II/base/subscriptor.h b/include/deal.II/base/subscriptor.h
index 1abb9992adefc2bdc0ec14284925cdf442d2a57f..11a151c1e4a3433cedbddcc8fc2db1fac97e33bc 100644 (file)
--- a/include/deal.II/base/subscriptor.h
+++ b/include/deal.II/base/subscriptor.h
@@ -179,7 +179,7 @@ private:
    * In multithreaded mode, this counter may be modified by different threads.
    * We thus have to mark it <tt>volatile</tt>. However, this is counter-
    * productive in non-MT mode since it may pessimize code. So use the macro
-   * defined above to selectively add volatility.
+   * defined in <tt>deal.II/base/config.h</tt> to selectively add volatility.
    */
   mutable DEAL_VOLATILE unsigned int counter;