Monam Agarwal
2014-Mar-23 19:11 UTC
[PATCH] net/bridge: Use RCU_INIT_POINTER(x, NULL) in br_vlan.c
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)
The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p,
NULL)
Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
---
net/bridge/br_vlan.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 8249ca7..5d5b101 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -99,9 +99,9 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
v->num_vlans--;
if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) {
if (v->port_idx)
- rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+ RCU_INIT_POINTER(v->parent.port->vlan_info, NULL);
else
- rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+ RCU_INIT_POINTER(v->parent.br->vlan_info, NULL);
kfree_rcu(v, rcu);
}
return 0;
@@ -113,9 +113,9 @@ static void __vlan_flush(struct net_port_vlans *v)
v->pvid = 0;
bitmap_zero(v->vlan_bitmap, VLAN_N_VID);
if (v->port_idx)
- rcu_assign_pointer(v->parent.port->vlan_info, NULL);
+ RCU_INIT_POINTER(v->parent.port->vlan_info, NULL);
else
- rcu_assign_pointer(v->parent.br->vlan_info, NULL);
+ RCU_INIT_POINTER(v->parent.br->vlan_info, NULL);
kfree_rcu(v, rcu);
}
--
1.7.9.5