Re: Setting pd_lower in GIN metapage

From: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
To: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Setting pd_lower in GIN metapage
Date: 2017-09-07 06:00:05
Message-ID: CAB7nPqTbre_aGEu_u7D2EazA40jDv_KjHqsms__WpuCmkZRVag@mail.gmail.com
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On Thu, Sep 7, 2017 at 2:40 PM, Amit Langote
<Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> On 2017/09/07 13:09, Michael Paquier wrote:
>> pd_lower should remain at 0 on pre-10 servers.
>
> Doesn't PageInit(), which is where any page gets initialized, has always
> set pd_lower to SizeOfPageHeaderData?

Yes, sorry. I had a mind slippery here..
--
Michael

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