[RTNETLINK]: Remove unnecessary locking in dump callbacks

Since we're now holding the rtnl during the entire dump operation, we can
remove additional locking for rtnl protected data. This patch does that
for all simple cases (dev_base_lock for dev_base walking, RCU protection
for FIB rule dumping).

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index eecba1886b49..1486f76f7878 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3224,7 +3224,6 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 
         s_idx = cb->args[0];
         s_ip_idx = ip_idx = cb->args[1];
-        read_lock(&dev_base_lock);
 
         for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
                 if (idx < s_idx)
@@ -3286,7 +3285,6 @@ done:
                 read_unlock_bh(&idev->lock);
                 in6_dev_put(idev);
         }
-        read_unlock(&dev_base_lock);
         cb->args[0] = idx;
         cb->args[1] = ip_idx;
         return skb->len;