From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 14 Nov 2013 16:14:47 +0000 (+0100)
Subject: genetlink: make genl_ops flags a u8 and move to end
X-Git-Tag: v3.13-rc1~33^2~32^2
X-Git-Url: http://pileus.org/git/?a=commitdiff_plain;h=3f5ccd06aecd0eb1651dd451439d5cb365170854;p=~andy%2Flinux

genetlink: make genl_ops flags a u8 and move to end

To save some space in the struct on 32-bit systems,
make the flags a u8 (only 4 bits are used) and also
move them to the end of the struct.

This has no impact on 64-bit systems as alignment of
the struct in an array uses up the space anyway.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index d87486aa061..0b6a144468c 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -112,15 +112,15 @@ static inline void genl_info_net_set(struct genl_info *info, struct net *net)
  * @ops_list: operations list
  */
 struct genl_ops {
-	u8			cmd;
-	u8			internal_flags;
-	unsigned int		flags;
 	const struct nla_policy	*policy;
 	int		       (*doit)(struct sk_buff *skb,
 				       struct genl_info *info);
 	int		       (*dumpit)(struct sk_buff *skb,
 					 struct netlink_callback *cb);
 	int		       (*done)(struct netlink_callback *cb);
+	u8			cmd;
+	u8			internal_flags;
+	u8			flags;
 };
 
 int __genl_register_family(struct genl_family *family);