From: David S. Miller <davem@davemloft.net>
Date: Fri, 19 Oct 2018 17:45:08 +0000 (-0700)
Subject: Revert "bond: take rcu lock in netpoll_send_skb_on_dev"
X-Git-Tag: v4.19~9^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=48995423143a097527802e28d7add20e5a27677a;p=platform%2Fkernel%2Flinux-rpi.git

Revert "bond: take rcu lock in netpoll_send_skb_on_dev"

This reverts commit 6fe9487892b32cb1c8b8b0d552ed7222a527fe30.

It is causing more serious regressions than the RCU warning
it is fixing.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index de1d1ba..3ae8998 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -312,7 +312,6 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 	/* It is up to the caller to keep npinfo alive. */
 	struct netpoll_info *npinfo;
 
-	rcu_read_lock_bh();
 	lockdep_assert_irqs_disabled();
 
 	npinfo = rcu_dereference_bh(np->dev->npinfo);
@@ -357,7 +356,6 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 		skb_queue_tail(&npinfo->txq, skb);
 		schedule_delayed_work(&npinfo->tx_work,0);
 	}
-	rcu_read_unlock_bh();
 }
 EXPORT_SYMBOL(netpoll_send_skb_on_dev);