From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755006AbdKBHSB (ORCPT ); Thu, 2 Nov 2017 03:18:01 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:44262 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751567AbdKBHR7 (ORCPT ); Thu, 2 Nov 2017 03:17:59 -0400 Date: Thu, 02 Nov 2017 16:17:55 +0900 (KST) Message-Id: <20171102.161755.1469652396797608567.davem@davemloft.net> To: khlebnikov@yandex-team.ru Cc: netdev@vger.kernel.org, brakmo@fb.com, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] tcp_nv: fix division by zero in tcpnv_acked() From: David Miller In-Reply-To: <150954313588.153848.10192893966808917578.stgit@buzz> References: <150954313588.153848.10192893966808917578.stgit@buzz> X-Mailer: Mew version 6.7 on Emacs 25.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 02 Nov 2017 00:17:59 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Konstantin Khlebnikov Date: Wed, 01 Nov 2017 16:32:15 +0300 > Average RTT could become zero. This happened in real life at least twice. > This patch treats zero as 1us. > > Signed-off-by: Konstantin Khlebnikov Applied and queued up for -stable, thank you. Indeed, as others have mentioned, a cheaper divide should be used but that is a separate issue from this fix and therefore should be done in a separate patch. Thanks again.