netdev - Re: [PATCH V9 02/13] ntp: add ADJ

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Message-ID: <1294952228.5617.20.camel@work-vm>
Date:	Thu, 13 Jan 2011 12:57:08 -0800
From:	john stultz <johnstul@...ibm.com>
To:	"Kuwahara,T." <6vvetjsrt26xsrzlh1z0zn4d2grdah@...il.com>
Cc:	Richard Cochran <richardcochran@...il.com>,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	netdev@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	David Miller <davem@...emloft.net>,
	Krzysztof Halasa <khc@...waw.pl>,
	Peter Zijlstra <peterz@...radead.org>,
	Rodolfo Giometti <giometti@...ux.it>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH V9 02/13] ntp: add ADJ_SETOFFSET mode bit

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


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