ipv6: update the comment in mcast.c

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 4fb761d4002d1279205bb8a152bd8efd7b8728b4..d64e26366cb8e6ec9cacb301e43e8e3c5661a4cd 100644 (file)
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -556,9 +556,8 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
        }
 
        err = -EADDRNOTAVAIL;
-       /*
-        * changes to the ipv6_mc_list require the socket lock and
-        * a read lock on ip6_sk_mc_lock. We have the socket lock,
+       /* changes to the ipv6_mc_list require the socket lock and
+        * rtnl lock. We have the socket lock and rcu read lock,
         * so reading the list is safe.
         */
 
@@ -582,9 +581,8 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
            copy_to_user(optval, gsf, GROUP_FILTER_SIZE(0))) {
                return -EFAULT;
        }
-       /* changes to psl require the socket lock, a read lock on
-        * on ipv6_sk_mc_lock and a write lock on pmc->sflock. We
-        * have the socket lock, so reading here is safe.
+       /* changes to psl require the socket lock, and a write lock
+        * on pmc->sflock. We have the socket lock so reading here is safe.
         */
        for (i = 0; i < copycount; i++) {
                struct sockaddr_in6 *psin6;
@@ -2350,7 +2348,7 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
 {
        int err;
 
-       /* callers have the socket lock and a write lock on ipv6_sk_mc_lock,
+       /* callers have the socket lock and rtnl lock
         * so no other readers or writers of iml or its sflist
         */
        if (!iml->sflist) {