[PATCH 2/4] rcu: No need to reset the poll request flag before completion

[Frederic Weisbecker]

The flag allowing to requeue the polling work is reset before the
polling even starts. However there is no point in having two competing
polling on the same grace period. Just reset the flag once we have
completed the grace period only.

Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Cc: Neeraj Upadhyay <quic_neeraju@xxxxxxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Uladzislau Rezki <uladzislau.rezki@xxxxxxxx>
Cc: Joel Fernandes <joel@xxxxxxxxxxxxxxxxx>
---
 kernel/rcu/tree_exp.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index b6fd857f34ba..763ec35546ed 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -911,7 +911,6 @@ static void sync_rcu_do_polled_gp(struct work_struct *wp)
 
 	raw_spin_lock_irqsave(&rnp->exp_poll_lock, flags);
 	s = rnp->exp_seq_poll_rq;
-	rnp->exp_seq_poll_rq |= 0x1;
 	raw_spin_unlock_irqrestore(&rnp->exp_poll_lock, flags);
 	if (s & 0x1)
 		return;
-- 
2.25.1