From: Stephen Hemminger <shemminger@osdl.org>

Minor tweak to rcu, use __list_splice instead of list_splice because the
  list has already been checked for empty.


---

 25-akpm/kernel/rcupdate.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -puN kernel/rcupdate.c~minor-rcu-optimization kernel/rcupdate.c
--- 25/kernel/rcupdate.c~minor-rcu-optimization	Fri May  7 15:12:10 2004
+++ 25-akpm/kernel/rcupdate.c	Fri May  7 15:12:10 2004
@@ -223,13 +223,13 @@ static void rcu_process_callbacks(unsign
 
 	if (!list_empty(&RCU_curlist(cpu)) &&
 	    rcu_batch_after(rcu_ctrlblk.curbatch, RCU_batch(cpu))) {
-		list_splice(&RCU_curlist(cpu), &list);
+		__list_splice(&RCU_curlist(cpu), &list);
 		INIT_LIST_HEAD(&RCU_curlist(cpu));
 	}
 
 	local_irq_disable();
 	if (!list_empty(&RCU_nxtlist(cpu)) && list_empty(&RCU_curlist(cpu))) {
-		list_splice(&RCU_nxtlist(cpu), &RCU_curlist(cpu));
+		__list_splice(&RCU_nxtlist(cpu), &RCU_curlist(cpu));
 		INIT_LIST_HEAD(&RCU_nxtlist(cpu));
 		local_irq_enable();
 

_