[PATCH v2 5/5] kvfree_rcu: Use kfree_rcu_monitor() instead of open-coded variant

["Uladzislau Rezki (Sony)" <urezki@gmail.com>]

To queue a new batch we have a kfree_rcu_monitor() function that
checks "monitor_todo" var. and invokes kfree_rcu_drain_unlock()
to start a new batch after a GP. Get rid of open-coded case by
switching it to the separate function.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 kernel/rcu/tree.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 17c128d93825..b3e04c4fefcf 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3670,7 +3670,6 @@ static unsigned long
 kfree_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
 {
 	int cpu, freed = 0;
-	unsigned long flags;
 
 	for_each_possible_cpu(cpu) {
 		int count;
@@ -3678,12 +3677,7 @@ kfree_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
 
 		count = krcp->count;
 		count += drain_page_cache(krcp);
-
-		raw_spin_lock_irqsave(&krcp->lock, flags);
-		if (krcp->monitor_todo)
-			kfree_rcu_drain_unlock(krcp, flags);
-		else
-			raw_spin_unlock_irqrestore(&krcp->lock, flags);
+		kfree_rcu_monitor(&krcp->monitor_work.work);
 
 		sc->nr_to_scan -= count;
 		freed += count;
-- 
2.20.1