[PATCH] lockdep: annotate sock_lock_init()
Teach special (multi-initialized, per-address-family) locking code to the lock
validator. Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/net/sock.h b/include/net/sock.h
index 7b3d6b8..83805fe 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -80,8 +80,12 @@
wait_queue_head_t wq;
} socket_lock_t;
+extern struct lock_class_key af_family_keys[AF_MAX];
+
#define sock_lock_init(__sk) \
do { spin_lock_init(&((__sk)->sk_lock.slock)); \
+ lockdep_set_class(&(__sk)->sk_lock.slock, \
+ af_family_keys + (__sk)->sk_family); \
(__sk)->sk_lock.owner = NULL; \
init_waitqueue_head(&((__sk)->sk_lock.wq)); \
} while(0)