netdev - [PATCH net-next 4/7] bonding: convert curr_slave

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Message-Id: <1410435523-7520-5-git-send-email-nikolay@redhat.com>
Date:	Thu, 11 Sep 2014 13:38:40 +0200
From:	Nikolay Aleksandrov <nikolay@...hat.com>
To:	netdev@...r.kernel.org
Cc:	vfalico@...il.com, j.vosburgh@...il.com, andy@...yhouse.net,
	davem@...emloft.net, Nikolay Aleksandrov <nikolay@...hat.com>
Subject: [PATCH net-next 4/7] bonding: convert curr_slave_lock to a spinlock and rename it

curr_slave_lock is now a misleading name, a much better name is
mode_lock as it'll be used for each mode's purposes and it's no longer
necessary to use a rwlock, a simple spinlock is enough.

Suggested-by: Jay Vosburgh <jay.vosburgh@...onical.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com>
---
 drivers/net/bonding/bond_3ad.c  | 4 ++--
 drivers/net/bonding/bond_main.c | 7 +++----
 drivers/net/bonding/bonding.h   | 2 +-
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 6512c1cee666..1b19f35689a4 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -2077,10 +2077,10 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
 				goto re_arm;
 			}
 
-			read_lock(&bond->curr_slave_lock);
+			spin_lock_bh(&bond->mode_lock);
 			aggregator = __get_first_agg(port);
 			ad_agg_selection_logic(aggregator);
-			read_unlock(&bond->curr_slave_lock);
+			spin_unlock_bh(&bond->mode_lock);
 		}
 		bond_3ad_set_carrier(bond);
 	}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 3b06685260b8..99d21c2fd44f 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1679,9 +1679,9 @@ static int __bond_release_one(struct net_device *bond_dev,
 		/* Sync against bond_3ad_rx_indication and
 		 * bond_3ad_state_machine_handler
 		 */
-		write_lock_bh(&bond->curr_slave_lock);
+		spin_lock_bh(&bond->mode_lock);
 		bond_3ad_unbind_slave(slave);
-		write_unlock_bh(&bond->curr_slave_lock);
+		spin_unlock_bh(&bond->mode_lock);
 	}
 
 	netdev_info(bond_dev, "Releasing %s interface %s\n",
@@ -3850,8 +3850,7 @@ void bond_setup(struct net_device *bond_dev)
 {
 	struct bonding *bond = netdev_priv(bond_dev);
 
-	/* initialize rwlocks */
-	rwlock_init(&bond->curr_slave_lock);
+	spin_lock_init(&bond->mode_lock);
 	bond->params = bonding_defaults;
 
 	/* Initialize pointers */
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 02afdeb08765..0cda34b827f8 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -195,7 +195,7 @@ struct bonding {
 	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
 	int     (*recv_probe)(const struct sk_buff *, struct bonding *,
 			      struct slave *);
-	rwlock_t curr_slave_lock;
+	spinlock_t mode_lock;
 	u8	 send_peer_notif;
 	u8       igmp_retrans;
 #ifdef CONFIG_PROC_FS
-- 
1.9.3

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