From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kent Overstreet <kmo-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>
Subject: Re: reverse link from bucket to keys
Date: Wed, 10 Jul 2013 16:01:38 -0700
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To: sheng qiu <herbert1984106-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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On Wed, Jul 10, 2013 at 11:22:22AM -0400, sheng qiu wrote:
> Hi Kent,
> 
> just a quick question about the bkey fields. The "high" member seems
> to have some bits not used right now. from bits 37 to bits 54 seems to
> be unused, right?
> The reason i was asking is that i want to keep some additional
> information in the bkeys,  if these bits are not used i might reuse
> them without incur more storage.

Correct, they're unused.