AcoSail/kernel_optimize_test
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bonding: remove unwanted lock for bond_store_primaryxxx()

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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 already in RTNL, so remove the
unwanted lock.

Suggested-by: Jay Vosburgh <fubar@us.ibm.com>
Suggested-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
dingtianhong 2013-12-13 10:20:22 +08:00 committed by David S. Miller
parent 4e789fc1a6
commit 75ad932c18
1 changed files with 0 additions and 4 deletions
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4
drivers/net/bonding/bond_sysfs.c
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@ -878,7 +878,6 @@ 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)) {
@ -918,7 +917,6 @@ 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();
@ -966,11 +964,9 @@ 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();