netdev - [PATCH net-next v2 1/1] driver: ipvlan: Free ipvl_port directly with kfree instead of kfree

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Message-Id: <1481032489-7864-1-git-send-email-fgao@ikuai8.com>
Date:   Tue,  6 Dec 2016 21:54:49 +0800
From:   fgao@...ai8.com
To:     davem@...emloft.net, maheshb@...gle.com, edumazet@...gle.com,
        netdev@...r.kernel.org, gfree.wind@...il.com
Subject: [PATCH net-next v2 1/1] driver: ipvlan: Free ipvl_port directly with kfree instead of kfree_rcu

From: Gao Feng <gfree.wind@...il.com>

There is no one which may reference the ipvlan port when free it in
ipvlan_port_create and ipvlan_port_destroy. So it is unnecessary to
use kfree_rcu.

Signed-off-by: Gao Feng <gfree.wind@...il.com>
---
 v2: Remove the rcu of ipvl_port directly
 v1: Initial version

 drivers/net/ipvlan/ipvlan.h      | 1 -
 drivers/net/ipvlan/ipvlan_main.c | 4 ++--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ipvlan/ipvlan.h b/drivers/net/ipvlan/ipvlan.h
index 05a62d2..031093e 100644
--- a/drivers/net/ipvlan/ipvlan.h
+++ b/drivers/net/ipvlan/ipvlan.h
@@ -97,7 +97,6 @@ struct ipvl_port {
 	struct work_struct	wq;
 	struct sk_buff_head	backlog;
 	int			count;
-	struct rcu_head		rcu;
 };
 
 static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index c6aa667..44ceebc 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -128,7 +128,7 @@ static int ipvlan_port_create(struct net_device *dev)
 	return 0;
 
 err:
-	kfree_rcu(port, rcu);
+	kfree(port);
 	return err;
 }
 
@@ -145,7 +145,7 @@ static void ipvlan_port_destroy(struct net_device *dev)
 	netdev_rx_handler_unregister(dev);
 	cancel_work_sync(&port->wq);
 	__skb_queue_purge(&port->backlog);
-	kfree_rcu(port, rcu);
+	kfree(port);
 }
 
 #define IPVLAN_FEATURES \
-- 
1.9.1