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ipv6: update the comment in mcast.c

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Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2014-09-11 15:35:15 -07:00 committed by David S. Miller
parent 414b6c943f
commit f7ed925c1b
1 changed files with 5 additions and 7 deletions
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12
net/ipv6/mcast.c
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@ -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) {