On Wed, Dec 11, 2013 at 03:08:23PM -0800, Paul E. McKenney wrote: > Hello! > > This series once again attempts to improve rcu_assign_pointer()'s > relationship with sparse. > > 1. Add a comment indicating that despite appearances, > rcu_assign_pointer() really only evaluates its arguments once, > as a cpp macro should. > > 2. Replace rcu_assign_pointer() of NULL with RCU_INIT_POINTER() to > silence a sparse warning. > > 3. 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. > > 4. Add an RCU_INITIALIZER() for compile-time initialization of > global RCU-protected pointers.
For all the patches (other than the one I wrote, for obvious reasons): Reviewed-by: Josh Triplett <j...@joshtriplett.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
