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Date:   Thu, 17 Jan 2019 18:03:14 +0800
From:   Yafang Shao <laoar.shao@...il.com>
To:     davem@...emloft.net, edumazet@...gle.com
Cc:     netdev@...r.kernel.org, shaoyafang@...iglobal.com,
        Yafang Shao <laoar.shao@...il.com>
Subject: [PATCH net-next] tcp: declare tcp_mmap() only when CONFIG_MMU is set

Since tcp_mmap() is defined when CONFIG_MMU is set.

Signed-off-by: Yafang Shao <laoar.shao@...il.com>
---
 include/net/tcp.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/net/tcp.h b/include/net/tcp.h
index e0a65c0..5c95018 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -406,8 +406,10 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock,
 		int flags, int *addr_len);
 int tcp_set_rcvlowat(struct sock *sk, int val);
 void tcp_data_ready(struct sock *sk);
+#ifdef CONFIG_MMU
 int tcp_mmap(struct file *file, struct socket *sock,
 	     struct vm_area_struct *vma);
+#endif
 void tcp_parse_options(const struct net *net, const struct sk_buff *skb,
 		       struct tcp_options_received *opt_rx,
 		       int estab, struct tcp_fastopen_cookie *foc);
-- 
1.8.3.1

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