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| author | Paul E. McKenney | 2013-12-10 00:19:53 +0100 |
|---|---|---|
| committer | Paul E. McKenney | 2013-12-12 21:19:17 +0100 |
| commit | 36708b89e00951b004b4dd6c14181301e2e98354 (patch) | |
| tree | 02a868b14e89182dd4a59fe66143bdc194803687 /drivers/net/bonding/bond_main.c | |
| parent | rcu: Add comment on evaluate-once properties of rcu_assign_pointer(). (diff) | |
| download | kernel-qcow2-linux-36708b89e00951b004b4dd6c14181301e2e98354.tar.gz kernel-qcow2-linux-36708b89e00951b004b4dd6c14181301e2e98354.tar.xz kernel-qcow2-linux-36708b89e00951b004b4dd6c14181301e2e98354.zip | |
bonding: Use RCU_INIT_POINTER() for better overhead and for sparse
Although rcu_assign_pointer() can be used to assign a constant
NULL pointer, doing so gets you an unnecessary memory barrier and
in some circumstances, sparse warnings. This commit therefore
changes the rcu_assign_pointer() of NULL in __bond_release_one() to
RCU_INIT_POINTER().
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'drivers/net/bonding/bond_main.c')
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 4dd5ee2a34cc..a0b97c4c655d 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1763,7 +1763,7 @@ static int __bond_release_one(struct net_device *bond_dev, } if (all) { - rcu_assign_pointer(bond->curr_active_slave, NULL); + RCU_INIT_POINTER(bond->curr_active_slave, NULL); } else if (oldcurrent == slave) { /* * Note that we hold RTNL over this sequence, so there |