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>

1 files changed, 5 insertions, 7 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 4fb761d4002d..d64e26366cb8 100644
--- 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) {