net: make net->dev_unreg_count atomic
Having to acquire rtnl from netdev_run_todo() for every dismantled
device is not desirable when/if rtnl is under stress.
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 374cc7b..c4f5601 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -63,7 +63,7 @@ struct net {
*/
spinlock_t rules_mod_lock;
- unsigned int dev_unreg_count;
+ atomic_t dev_unreg_count;
unsigned int dev_base_seq; /* protected by rtnl_mutex */
int ifindex;
