From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Date: Thu, 14 Dec 2017 13:51:59 +0000 (-0800)
Subject: sock: Hide unused variable when !CONFIG_PROC_FS.
X-Git-Tag: v4.16-rc1~123^2~337
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=398b841e4ad69a822f615442b5ea4ca767330a3b;p=thirdparty%2Fkernel%2Fstable.git

sock: Hide unused variable when !CONFIG_PROC_FS.

When CONFIG_PROC_FS is disabled, we will not use the prot_inuse
counter. This adds an #ifdef to hide the variable definition in
that case. This is not a bugfix. But we can save bytes when there
are many network namespace.

Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Martin Zhang <zhangjunweimartin@didichuxing.com>
Signed-off-by: Tonghao Zhang <zhangtonghao@didichuxing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/netns/core.h b/include/net/netns/core.h
index a5e8a66c57b45..36c2d998a43c0 100644
--- a/include/net/netns/core.h
+++ b/include/net/netns/core.h
@@ -13,8 +13,8 @@ struct netns_core {
 
 #ifdef CONFIG_PROC_FS
 	int __percpu *sock_inuse;
-#endif
 	struct prot_inuse __percpu *prot_inuse;
+#endif
 };
 
 #endif