Paul E. McKenney fc390cde36 rcu: need barrier() in UP synchronize_sched_expedited()
If synchronize_sched_expedited() is ever to be called from within
kernel/sched.c in a !SMP PREEMPT kernel, the !SMP implementation needs
a barrier().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2010-05-07 07:23:21 +02:00
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