[NETFILTER]: More __read_mostly annotations

Place rarely written variables in the read-mostly section by using
__read_mostly

Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 09c0e63..6607ed4 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -73,10 +73,10 @@
 atomic_t nf_conntrack_count = ATOMIC_INIT(0);
 
 void (*nf_conntrack_destroyed)(struct nf_conn *conntrack) = NULL;
-unsigned int nf_conntrack_htable_size __read_mostly = 0;
+unsigned int nf_conntrack_htable_size __read_mostly;
 int nf_conntrack_max __read_mostly;
 struct list_head *nf_conntrack_hash __read_mostly;
-struct nf_conn nf_conntrack_untracked;
+struct nf_conn nf_conntrack_untracked __read_mostly;
 unsigned int nf_ct_log_invalid __read_mostly;
 LIST_HEAD(unconfirmed);
 static int nf_conntrack_vmalloc __read_mostly;