Re: [GIT PULL] locking changes for v4.4

[Ingo Molnar]

* Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> On Wed, Nov 04, 2015 at 12:48:50PM +0100, Ingo Molnar wrote:
> > 
> > * Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> > 
> > > On Tue, Nov 3, 2015 at 3:58 PM, Linus Torvalds
> > > <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > >
> > > > I think I'll pull this, but then just make a separate commit to remove
> > 
> > Thanks!
> > 
> > > > all the bogus games with "control" dependencies that seem to have no basis is 
> > > > reality.
> > > 
> > > So the attached is what I committed in my tree. [...]
> > 
> > Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
> > 
> > > +      dependency into nonexistence.  Careful use of READ_ONCE() or
> > > +      atomic{,64}_read() can help to preserve your control dependency.
> > > +      Please see the Compiler Barrier section for more information.
> > 
> > So technically it's the "COMPILER BARRIER" section, but this is a pre-existing 
> > formulation and the document doesn't use such references consistently so I guess 
> > it doesn't matter much.
> 
> I will take a pass through and fix these up.  I don't see this as urgent,
> so will add it to my patches for the next merge window.

Sounds good to me!

Thanks,

	Ingo
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