Re: [PATCH -mm] PM: Prevent frozen user mode helpers from failingthe freezing of tasks (rev. 2)

[Benjamin Herrenschmidt]

On Tue, 2007-06-26 at 10:48 +0200, Pavel Machek wrote:
> > The problem, as far as I understand it, is that the instructions can
> get
> > reordered if there are no barriers in there.
> 
> Are you sure?  I thought atomic variables have barrirers built-in.

bzzzt. they don't.

Ben.


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