Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures

[Stefan Richter <stefanr@s5r6.in-berlin.de>]

I wrote:
> Nick Piggin wrote:
>> You might find that these places that appear to need barriers are
>> buggy for other reasons anyway. Can you point to some in-tree code
>> we can have a look at?
> 
> I could, or could not, if I were through with auditing the code.  I
> remembered one case and posted it (nodemgr_host_thread) which was safe
> because msleep_interruptible provided the necessary barrier there, and
> this implicit barrier is not in danger to be removed by future patches.

PS, just in case anybody holds his breath for more example code from me,
I don't plan to continue with an actual audit of the drivers I maintain.
It's an important issue, but my current time budget will restrict me to
look at it ad hoc, per case.  (Open bugs have higher priority than
potential bugs.)
-- 
Stefan Richter
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http://arcgraph.de/sr/