From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Snitzer <snitzer@redhat.com>
Subject: Re: dm-statistics: report precise timestamps and
	histogram
Date: Tue, 18 Aug 2015 17:07:27 -0400
Message-ID: <20150818210727.GA17473@redhat.com>
References: <alpine.LRH.2.02.1508181618100.19666@file01.intranet.prod.int.rdu2.redhat.com>
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To: Mikulas Patocka <mpatocka@redhat.com>
Cc: dm-devel@redhat.com, Bryn Reeves <breeves@redhat.com>, "Alasdair G. Kergon" <agk@redhat.com>
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On Tue, Aug 18 2015 at  4:26pm -0400,
Mikulas Patocka <mpatocka@redhat.com> wrote:

> Mike, please submit this patch to the upstream kernel before 4.2 is 
> released, so that the all the kernels that support the options 
> "precise_timestamps" and "histogram" also report these values back.

It is really late to be sending pull requests for 4.2 (next release is
likely 4.2 final).  I've already sent 6 'fixes' pull requests to Linus
for 4.2.  This patch is just too late, sorry.

But what I will do is tag this commit for 4.2-stable inclusion.

Userspace will have to check the DM ioctl version to know if DM provides
these extra keywords.

Mike