tree 37e8c84f227a21d628a9d3a96dbbf5fedd506db1
parent 94458d5ecb3da844823cc191e73e5c5ead98a464
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1273164561 +0200
committer Tejun Heo <tj@kernel.org> 1273164561 +0200

sched: correctly place paranioa memory barriers in synchronize_sched_expedited()

The memory barriers must be in the SMP case, not in the !SMP case.
Also add a barrier after the atomic_inc() in order to ensure that
other CPUs see post-synchronize_sched_expedited() actions as following
the expedited grace period.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>