On Wed, Oct 09, 2013 at 02:29:20PM -0700, Paul E. McKenney wrote:
> Hello!
> 
> This series features updates to allow sparse to do a better job of
> statically analyzing RCU usage:
> 
> 1.    Apply ACCESS_ONCE() to rcu_assign_pointer()'s target to prevent
>       comiler mischief.  Also require that the source pointer be from
>       the kernel address space.  Sometimes it can be from the RCU address
>       space, which necessitates the remaining patches in this series.
>       Which, it must be admitted, apply to a very small fraction of
>       the rcu_assign_pointer() invocations in the kernel.  This commit
>       courtesy of Josh Triplett.
> 
> 2-13. Apply rcu_access_pointer() to avoid a number of false positives.

I would suggest moving patch 1 to the end of the series, to avoid
introducing and subsequently fixing warnings.

- Josh Triplett
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