From: Jakub Kicinski <kuba@kernel.org>
To: Ziran Zhang <zhangcoder@yeah.net>
Cc: Eric Dumazet <edumazet@google.com>,
Neal Cardwell <ncardwell@google.com>,
"David S . Miller" <davem@davemloft.net>,
Paolo Abeni <pabeni@redhat.com>,
Kuniyuki Iwashima <kuniyu@google.com>,
Simon Horman <horms@kernel.org>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next] tcp: fix mdev comment in tcp_rtt_estimator()
Date: Tue, 18 Aug 2026 08:13:46 -0700 [thread overview]
Message-ID: <20260818081346.03773154@kernel.org> (raw)
In-Reply-To: <20260818085153.18509-1-zhangcoder@yeah.net>
On Tue, 18 Aug 2026 16:51:53 +0800 Ziran Zhang wrote:
> The old comment "mdev = 3/4 mdev + 1/4 new" only describes the
> common case. However, when RTT drops sharply, the code applies
> a finer gain of 1/32 instead of 1/4, resulting in:
> mdev = 31/32 mdev + 1/32 * new.
>
> Express both cases with a unified formula using variable
> gain g.
## Form letter - net-next-closed
The merge window for v7.3 has started, and therefore net-next is closed
for new drivers, features, code refactoring and optimizations.
We will only consider applying net-next patches which were posted
before the announcement:
https://lore.kernel.org/20260816155953.072d73da@kernel.org
Fixes are obviously welcome at any time. net-next patches may be sent
for review and discussion only with an RFC tag.
Please repost when net-next reopens.
See: https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle
--
pw-bot: defer
pv-bot: closed
next prev parent reply other threads:[~2026-08-18 15:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-18 8:51 [PATCH net-next] tcp: fix mdev comment in tcp_rtt_estimator() Ziran Zhang
2026-08-18 15:13 ` Jakub Kicinski [this message]
2026-08-18 15:42 ` Ziran Zhang
2026-08-18 15:53 ` Jakub Kicinski
2026-08-18 16:03 ` Ziran Zhang
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