ipv6 flowlabel: add __rcu annotations

Commit 18367681a10b (ipv6 flowlabel: Convert np->ipv6_fl_list to RCU.)
omitted proper __rcu annotations.

Signed-off-by: Eric Dumazet <[e-mail]>
Cc: YOSHIFUJI Hideaki <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/ipv6.h

···
 };
 
 struct ip6_flowlabel {
-	struct ip6_flowlabel	*next;
+	struct ip6_flowlabel __rcu *next;
 	__be32			label;
 	atomic_t		users;
 	struct in6_addr		dst;
···
 #define IPV6_FLOWLABEL_MASK	cpu_to_be32(0x000FFFFF)
 
 struct ipv6_fl_socklist {
-	struct ipv6_fl_socklist	*next;
-	struct ip6_flowlabel	*fl;
-	struct rcu_head		rcu;
+	struct ipv6_fl_socklist	__rcu	*next;
+	struct ip6_flowlabel		*fl;
+	struct rcu_head			rcu;
 };
 
 extern struct ip6_flowlabel	*fl6_sock_lookup(struct sock *sk, __be32 label);

net/ipv6/ip6_flowlabel.c

···
 	spin_lock(&ip6_fl_lock);
 
 	for (i=0; i<=FL_HASH_MASK; i++) {
-		struct ip6_flowlabel *fl, **flp;
+		struct ip6_flowlabel *fl;
+		struct ip6_flowlabel __rcu **flp;
+
 		flp = &fl_ht[i];
 		while ((fl = rcu_dereference_protected(*flp,
 						       lockdep_is_held(&ip6_fl_lock))) != NULL) {
···
 
 	spin_lock(&ip6_fl_lock);
 	for (i = 0; i <= FL_HASH_MASK; i++) {
-		struct ip6_flowlabel *fl, **flp;
+		struct ip6_flowlabel *fl;
+		struct ip6_flowlabel __rcu **flp;
+
 		flp = &fl_ht[i];
 		while ((fl = rcu_dereference_protected(*flp,
 						       lockdep_is_held(&ip6_fl_lock))) != NULL) {
···
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct in6_flowlabel_req freq;
 	struct ipv6_fl_socklist *sfl1=NULL;
-	struct ipv6_fl_socklist *sfl, **sflp;
+	struct ipv6_fl_socklist *sfl;
+	struct ipv6_fl_socklist __rcu **sflp;
 	struct ip6_flowlabel *fl, *fl1 = NULL;