[3.19.y-ckt stable] Patch "af_unix: Convert the unix_sk macro to an inline function for type safety" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    af_unix: Convert the unix_sk macro to an inline function for type safety

to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue

This patch is scheduled to be released in version 3.19.8-ckt10.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 383789eb512122d1b56c94dd40128d2bd9b0374f Mon Sep 17 00:00:00 2001
From: Aaron Conole <aconole at bytheb.org>
Date: Sat, 26 Sep 2015 18:50:42 -0400
Subject: [PATCH 053/120] af_unix: Convert the unix_sk macro to an inline
 function for type safety

[ Upstream commit 4613012db1d911f80897f9446a49de817b2c4c47 ]

As suggested by Eric Dumazet this change replaces the
#define with a static inline function to enjoy
complaints by the compiler when misusing the API.

Signed-off-by: Aaron Conole <aconole at bytheb.org>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 include/net/af_unix.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index a175ba4..dfe4ddf 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -64,7 +64,11 @@ struct unix_sock {
 #define UNIX_GC_MAYBE_CYCLE	1
 	struct socket_wq	peer_wq;
 };
-#define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+static inline struct unix_sock *unix_sk(struct sock *sk)
+{
+	return (struct unix_sock *)sk;
+}

 #define peer_wait peer_wq.wait

--
1.9.1