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authorWANG Cong <xiyou.wangcong@gmail.com>2014-09-12 02:35:15 +0400
committerDavid S. Miller <davem@davemloft.net>2014-09-14 00:38:42 +0400
commitf7ed925c1b4d62e82b72d8e99fa4be52fb0c73b6 (patch)
tree5ad1c39a38621d17fd91f70c13b1b9667c015055 /net/ipv6/mcast.c
parent414b6c943fe25c5c576b6f0ce9077c29a150d826 (diff)
downloadlinux-f7ed925c1b4d62e82b72d8e99fa4be52fb0c73b6.tar.xz
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>
Diffstat (limited to 'net/ipv6/mcast.c')
-rw-r--r--net/ipv6/mcast.c12
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) {