Re: [PATCH tip/core/rcu 1/6] rcu: Update documentation to cover call_srcu() and srcu_barrier().

Paul E. McKenney
2012-06-15T21:17:17Z

On Fri, Jun 15, 2012 at 01:19:12PM -0700, Josh Triplett wrote:
> On Fri, Jun 15, 2012 at 11:57:49AM -0700, Paul E. McKenney wrote:
> > --- a/Documentation/RCU/rcubarrier.txt
> > +++ b/Documentation/RCU/rcubarrier.txt
> > @@ -261,8 +261,10 @@ Answers to Quick Quizzes
> >
> > Quick Quiz #1: Why is there no srcu_barrier()?
> >
> > -Answer: Since there is no call_srcu(), there can be no outstanding SRCU
> > - callbacks. Therefore, there is no need to wait for them.
> > +Answer: There really is an srcu_barrier() now that there is a call_srcu().
> > + Before call_srcu(), there were no SRCU callbacks, and there was
> > + therefore no need to wait for them, and therefore there was
> > + no srcu_barrier().
>
> I don't think it makes sense to leave this question in its current form
> and just change the answer. It seems like a trick question now. :)
>
> I'd suggest just dropping the question and renumbering the remaining
> questions.

But I -like- trick questions!!! ;-)

I will nevertheless update as suggested.

Thanx, Paul