--- /dev/null
+From 647a4a48b0c81e92d5191d476decd962359013f6 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Mon, 19 Aug 2019 23:17:55 -0400
+Subject: Revert "tcp: Clear sk_send_head after purging the write queue"
+
+This reverts commit e99e7745d03fc50ba7c5b7c91c17294fee2d5991.
+
+Ben Hutchings writes:
+
+>Sorry, this is the same issue that was already fixed by "tcp: reset
+>sk_send_head in tcp_write_queue_purge". You can drop my version from
+>the queue for 4.4 and 4.9 and revert it for 4.14.
+
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/net/tcp.h | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/include/net/tcp.h b/include/net/tcp.h
+index 9de2c8cdcc512..7994e569644e0 100644
+--- a/include/net/tcp.h
++++ b/include/net/tcp.h
+@@ -1613,8 +1613,6 @@ static inline void tcp_init_send_head(struct sock *sk)
+ sk->sk_send_head = NULL;
+ }
+
+-static inline void tcp_init_send_head(struct sock *sk);
+-
+ /* write queue abstraction */
+ static inline void tcp_write_queue_purge(struct sock *sk)
+ {
+@@ -1623,7 +1621,6 @@ static inline void tcp_write_queue_purge(struct sock *sk)
+ tcp_chrono_stop(sk, TCP_CHRONO_BUSY);
+ while ((skb = __skb_dequeue(&sk->sk_write_queue)) != NULL)
+ sk_wmem_free_skb(sk, skb);
+- tcp_init_send_head(sk);
+ sk_mem_reclaim(sk);
+ tcp_clear_all_retrans_hints(tcp_sk(sk));
+ tcp_init_send_head(sk);
+--
+2.20.1
+