1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index d68633452d9b..4ad0706d40eb 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -248,7 +248,10 @@ struct tcp_sock {
         struct sk_buff* lost_skb_hint;
         struct sk_buff *retransmit_skb_hint;
 
-        struct sk_buff_head     out_of_order_queue; /* Out of order segments go here */
+        /* OOO segments go in this list. Note that socket lock must be held,
+         * as we do not use sk_buff_head lock.
+         */
+        struct sk_buff_head     out_of_order_queue;
 
         /* SACKs data, these 2 need to be together (see tcp_options_write) */
         struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */