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-rw-r--r--net/ipv4/tcp_output.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 78a56cef7e39..75dcf4daca72 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1920,9 +1920,12 @@ static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb,
goto send_now;
/* Avoid bursty behavior by allowing defer
- * only if the last write was recent.
+ * only if the last write was recent (1 ms).
+ * Note that tp->tcp_wstamp_ns can be in the future if we have
+ * packets waiting in a qdisc or device for EDT delivery.
*/
- if ((s32)(tcp_jiffies32 - tp->lsndtime) > 0)
+ delta = tp->tcp_clock_cache - tp->tcp_wstamp_ns - NSEC_PER_MSEC;
+ if (delta > 0)
goto send_now;
in_flight = tcp_packets_in_flight(tp);