tree 4999d3c03ed711056474c3a31512e7d3cf253b87
parent 5c51dd7349d4bb26f845f17f85daa168f5fa03f2
author Paul E. McKenney <paul.mckenney@linaro.org> 1312469734 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1317271119 -0700

rcu: Simplify unboosting checks

Commit 7765be (Fix RCU_BOOST race handling current->rcu_read_unlock_special)
introduced a new ->rcu_boosted field in the task structure.  This is
redundant because the existing ->rcu_boost_mutex will be non-NULL at
any time that ->rcu_boosted is nonzero.  Therefore, this commit removes
->rcu_boosted and tests ->rcu_boost_mutex instead.

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