Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)

From: Melanie Plageman <melanieplageman(at)gmail(dot)com>
To: Alexey Makhmutov <a(dot)makhmutov(at)postgrespro(dot)ru>
Cc: Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Kirill Reshke <reshkekirill(at)gmail(dot)com>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Date: 2026-04-16 16:19:32
Message-ID: CAAKRu_anydVV7wC7RWSQsrsOsxVRznS04h99DUiTib4VOP-ydQ@mail.gmail.com
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On Mon, Apr 13, 2026 at 12:17 PM Melanie Plageman
<melanieplageman(at)gmail(dot)com> wrote:
>
> The scenario causing inaccurate freespace maps after promotion is
> technically possible though improbable. Moreover, I don't see a
> downside to changing it. Patch I plan to commit is attached.

I've committed this fix in b4c1b2be300.

- Melanie

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