[PATCH net-next v2 10/10] bonding: remove unwanted lock for bond_store_primaryxxx()
From: Ding Tianhong <hidden>
Date: 2013-11-08 02:08:54
Subsystem:
bonding driver, networking drivers, the rest · Maintainers:
Jay Vosburgh, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The bond_select_active_slave() will not release and acquire bond lock, so it is no need to read the bond lock for them, and the bond_store_primaryxxx() is in RTNL, remove the unwanted lock. Suggested-by: Jay Vosburgh <redacted> Suggested-by: Veaceslav Falico <redacted> Signed-off-by: Ding Tianhong <redacted> --- drivers/net/bonding/bond_sysfs.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 47749c9..25ef533 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c@@ -1068,7 +1068,6 @@ static ssize_t bonding_store_primary(struct device *d, if (!rtnl_trylock()) return restart_syscall(); block_netpoll_tx(); - read_lock(&bond->lock); write_lock_bh(&bond->curr_slave_lock); if (!USES_PRIMARY(bond->params.mode)) {
@@ -1108,7 +1107,6 @@ static ssize_t bonding_store_primary(struct device *d, bond->dev->name, ifname, bond->dev->name); out: write_unlock_bh(&bond->curr_slave_lock); - read_unlock(&bond->lock); unblock_netpoll_tx(); rtnl_unlock();
@@ -1156,11 +1154,9 @@ static ssize_t bonding_store_primary_reselect(struct device *d, new_value); block_netpoll_tx(); - read_lock(&bond->lock); write_lock_bh(&bond->curr_slave_lock); bond_select_active_slave(bond); write_unlock_bh(&bond->curr_slave_lock); - read_unlock(&bond->lock); unblock_netpoll_tx(); out: rtnl_unlock();
--
1.8.2.1