netfilter: Replace spin_is_locked() with lockdep

lockdep_assert_held() is better suited to checking locking requirements,
since it won't get confused when someone else holds the lock. This is
also a step towards possibly removing spin_is_locked().

Signed-off-by: Lance Roy <[e-mail]>
Cc: Pablo Neira Ayuso <[e-mail]>
Cc: Jozsef Kadlecsik <[e-mail]>
Cc: Florian Westphal <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Cc: <[e-mail]>
Cc: <[e-mail]>
Cc: <[e-mail]>
Acked-by: Jozsef Kadlecsik <[e-mail]>
Signed-off-by: Pablo Neira Ayuso <[e-mail]>

net/netfilter/ipset/ip_set_hash_gen.h

···
 
 #define __ipset_dereference_protected(p, c)	rcu_dereference_protected(p, c)
 #define ipset_dereference_protected(p, set) \
-	__ipset_dereference_protected(p, spin_is_locked(&(set)->lock))
+	__ipset_dereference_protected(p, lockdep_is_held(&(set)->lock))
 
 #define rcu_dereference_bh_nfnl(p)	rcu_dereference_bh_check(p, 1)