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 <xe...@openvz.org>
Signed-off-by: Martin Zhang <zhangjunweimar...@didichuxing.com>
Signed-off-by: Tonghao Zhang <zhangtong...@didichuxing.com>
---
 include/net/netns/core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/netns/core.h b/include/net/netns/core.h
index a5e8a66..36c2d99 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
-- 
1.8.3.1

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