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linux/lib/percpu-refcount.c
Paul E. McKenney b393e8b33e percpu: READ_ONCE() now implies smp_read_barrier_depends() 
Because READ_ONCE() now implies smp_read_barrier_depends(), this commit
removes the now-redundant smp_read_barrier_depends() following the
READ_ONCE() in __ref_is_percpu().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
2017-12-04 10:52:53 -08:00

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