3 files changed, 11 insertions, 8 deletions

diff --git a/include/linux/igmp.h b/include/linux/igmp.h
index 93fc2449af10..7d164670f264 100644
--- a/include/linux/igmp.h
+++ b/include/linux/igmp.h
@@ -167,10 +167,10 @@ struct ip_sf_socklist {
  */
 
 struct ip_mc_socklist {
-        struct ip_mc_socklist   *next;
+        struct ip_mc_socklist __rcu *next_rcu;
         struct ip_mreqn         multi;
         unsigned int            sfmode;         /* MCAST_{INCLUDE,EXCLUDE} */
-        struct ip_sf_socklist   *sflist;
+        struct ip_sf_socklist __rcu     *sflist;
         struct rcu_head         rcu;
 };
 
@@ -186,11 +186,14 @@ struct ip_sf_list {
 struct ip_mc_list {
         struct in_device        *interface;
         __be32                  multiaddr;
+        unsigned int            sfmode;
         struct ip_sf_list       *sources;
         struct ip_sf_list       *tomb;
-        unsigned int            sfmode;
         unsigned long           sfcount[2];
-        struct ip_mc_list       *next;
+        union {
+                struct ip_mc_list *next;
+                struct ip_mc_list __rcu *next_rcu;
+        };
         struct timer_list       timer;
         int                     users;
         atomic_t                refcnt;
@@ -201,6 +204,7 @@ struct ip_mc_list {
         char                    loaded;
         unsigned char           gsquery;        /* check source marks? */
         unsigned char           crcount;
+        struct rcu_head         rcu;
 };
 
 /* V3 exponential field decoding */
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index ccd5b07d678d..380ba6bc5db1 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -52,9 +52,8 @@ struct in_device {
         atomic_t                refcnt;
         int                     dead;
         struct in_ifaddr        *ifa_list;      /* IP ifaddr chain              */
-        rwlock_t                mc_list_lock;
-        struct ip_mc_list       *mc_list;       /* IP multicast filter chain    */
-        int                     mc_count;                 /* Number of installed mcasts */
+        struct ip_mc_list __rcu *mc_list;       /* IP multicast filter chain    */
+        int                     mc_count;       /* Number of installed mcasts   */
         spinlock_t              mc_tomb_lock;
         struct ip_mc_list       *mc_tomb;
         unsigned long           mr_v1_seen;
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 1989cfd7405f..8945f9fb192a 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -141,7 +141,7 @@ struct inet_sock {
                                 nodefrag:1;
         int                     mc_index;
         __be32                  mc_addr;
-        struct ip_mc_socklist   *mc_list;
+        struct ip_mc_socklist __rcu     *mc_list;
         struct {
                 unsigned int            flags;
                 unsigned int            fragsize;