Re: [patch] linux 2.4.17: An mb() rework

["Maciej W. Rozycki" <macro@ds2.pg.gda.pl>]

On Mon, 4 Feb 2002, Ralf Baechle wrote:

> Bugs due to surprise memory reordering are entirely unfun to debug, so be
> paranoid.  They're out there to get you ...

 The rule of thumb is to use barriers whenever a *device* requires them
and depend on the platform to define them appropriately.  They will expand
to nothing if unneeded, so there is no trade-off.

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +