From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757209Ab1AMU5S (ORCPT ); Thu, 13 Jan 2011 15:57:18 -0500 Received: from e6.ny.us.ibm.com ([32.97.182.146]:52552 "EHLO e6.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756689Ab1AMU5N (ORCPT ); Thu, 13 Jan 2011 15:57:13 -0500 Subject: Re: [PATCH V9 02/13] ntp: add ADJ_SETOFFSET mode bit From: john stultz To: "Kuwahara,T." <6vvetjsrt26xsrzlh1z0zn4d2grdah@gmail.com> Cc: Richard Cochran , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, netdev@vger.kernel.org, Alan Cox , Arnd Bergmann , Christoph Lameter , David Miller , Krzysztof Halasa , Peter Zijlstra , Rodolfo Giometti , Thomas Gleixner In-Reply-To: References: <60566a54842bcf5974d55ed39f387c32ff9cf5cb.1294917348.git.richard.cochran@omicron.at> Content-Type: text/plain; charset="UTF-8" Date: Thu, 13 Jan 2011 12:57:08 -0800 Message-ID: <1294952228.5617.20.camel@work-vm> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2011-01-14 at 05:39 +0900, Kuwahara,T. wrote: > My proposal: Limit the adjustable range of the offset so that leap > seconds will never occur more than once. (2147.5 seconds would be the > best choice. :-) 2147.5? That's ~36 minutes. While I think a limit could be a sensible compromise here. Leap seconds are limited to every six months. So surely a limit of 86400 (one day), or 2592000 (30 days) would be more reasonable. thanks -john