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Date: Thu, 1 Oct 2026 16:07:20 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: nramaswamy@openai.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net 1/2] tcp: restore RACK list membership when undoing
 loss
Message-ID: <20261001160720.0a663ec7@kernel.org>
In-Reply-To: <20260926002520.42955-5-nramaswamy@openai.com>
References: <20260926002520.42955-4-nramaswamy@openai.com>
	<20260926002520.42955-5-nramaswamy@openai.com>
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On Fri, 25 Sep 2026 17:25:22 -0700 nramaswamy@openai.com wrote:
> Partial undo can clear the TCPCB_LOST flag on segments already removed from
> RACK's list, which prevents subsequent RACK loss detection and can lead to
> long retransmission delays. Restoring them to the RACK list allows them to
> be reconsidered for fast retransmission in the future. To do this, we first
> sort the segments whose lost flag is being cleared, and reinsert them into
> the RACK list (which is sorted by transmission time).

Could you add to the commit msg if this was found with an LLM scan
of the source code or its been seen in prod?