From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: [blkback] blkback statistic counters are
	signed	values
Date: Wed, 6 Mar 2013 11:14:11 +0000
Message-ID: <51372503.6080806@citrix.com>
References: <5134C3C2.6040108@citrix.com>	<20130304192246.GH15386@phenom.dumpdata.com>
	<5136344F.7040602@citrix.com>
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To: Zoltan Kiss <zoltan.kiss@citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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On 05/03/13 18:07, Zoltan Kiss wrote:
> Hi,
> 
> On 04/03/13 19:22, Konrad Rzeszutek Wilk wrote:
>> Seems like the right approach. Could you send a patch please?
> I just sent it to you and linux-kernel@vger.kernel.org:
> 
> http://lkml.indiana.edu/hypermail/linux/kernel/1303.0/02306.html
> 
>> Thought that won't solve the problem when we overflow an 'unsigned
>> long long'.
> Well, I think it's good enough if the users of these values pay
> attention, and poll these sysfs entries often enough to detect that
> there was an overflow.

Unless my maths is wrong it will take millions of years for these sector
count statistics to overflow.

David