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phonet: use call_rcu for phonet device free 

Use call_rcu rather than synchronize_rcu.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
wifi-calibration
Jiri Pirko 2010-06-07 03:27:39 +00:00 committed by David S. Miller
parent bb69ae049f
commit 88e7594a97
2 changed files with 12 additions and 4 deletions
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1
include/net/phonet/pn_dev.h
View File

@ -34,6 +34,7 @@ struct phonet_device {
struct list_head list;
struct net_device *netdev;
DECLARE_BITMAP(addrs, 64);
struct rcu_head rcu;
};
int phonet_device_init(void);

15
net/phonet/pn_dev.c
View File

@ -162,6 +162,14 @@ int phonet_address_add(struct net_device *dev, u8 addr)
return err;
}
static void phonet_device_rcu_free(struct rcu_head *head)
{
struct phonet_device *pnd;
pnd = container_of(head, struct phonet_device, rcu);
kfree(pnd);
}
int phonet_address_del(struct net_device *dev, u8 addr)
{
struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
@ -179,10 +187,9 @@ int phonet_address_del(struct net_device *dev, u8 addr)
pnd = NULL;
mutex_unlock(&pndevs->lock);
if (pnd) {
synchronize_rcu();
kfree(pnd);
}
if (pnd)
call_rcu(&pnd->rcu, phonet_device_rcu_free);
return err;
}