Re: [PATCH RFC tip/core/rcu 12/15] lib/assoc_array: Remove smp_read_barrier_depends()

[Peter Zijlstra]

On Mon, Oct 09, 2017 at 05:22:46PM -0700, Paul E. McKenney wrote:
> Now that smp_read_barrier_depends() is implied by READ_ONCE(), adding
> READ_ONCE() to assoc_array_ptr_to_leaf() and __assoc_array_ptr_to_meta()
> allows the several smp_read_barrier_depends() calls to be removed from
> lib/assoc_array.c.  This commit makes this change.

So arguably this code was broken for not already having READ_ONCE().