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rcu: Make rcu_enter_nohz() pay attention to nesting
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Mon, 16 May 2011 21:27:31 +0000 (14:27 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 26 May 2011 16:42:22 +0000 (09:42 -0700)
The old version of rcu_enter_nohz() forced RCU into nohz mode even if
the nesting count was non-zero.  This change causes rcu_enter_nohz()
to hold off for non-zero nesting counts.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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