Would you guys like to carry this patch, or should I push it up
-tip?  If I don't hear otherwise from you, I will push it up -tip.
The INIT_RCU_HEAD() primitive is going away in favor of debugobjects.

                                                        Thanx, Paul


powerpc: remove all rcu head initializations

Remove all rcu head inits. We don't care about the RCU head state before
passing it to call_rcu() anyway. Only leave the "on_stack" variants so
debugobjects can keep track of objects on stack.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Signed-off-by: Paul E. McKenney <paul...@linux.vnet.ibm.com>

diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index ebc2f38..2c7e801 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -92,7 +92,6 @@ static void pte_free_rcu_callback(struct rcu_head *head)
 static void pte_free_submit(struct pte_freelist_batch *batch)
-       INIT_RCU_HEAD(&batch->rcu);
        call_rcu(&batch->rcu, pte_free_rcu_callback);
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