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

> On Sep 24, 2026, at 05:21, Melanie Plageman <melanieplageman@gmail.com> wrote:
>
> On Mon, Sep 21, 2026 at 12:18 PM Melanie Plageman
> <melanieplageman@gmail.com> wrote:
>>
>> I've tightened up the commit messages in the latest version and
>> changed 0002 as you suggested. I'll commit 0001-0003 after beta4 is
>> tagged tomorrow. 0004 I'm going to think about just a bit longer (and
>> would be master only).
>
> I've committed all but v2-0004. That turned out to have a bug where I
> updated the prune_xid to newest_live_xid even when there were dead
> items (because that code runs before we set all-visible to false due
> to dead items. Attached v3 fixes that and has a patch to replace
> foreach with foreach_int and foreach_node which David suggested a long
> time ago and I never got around to. 0001 targets master only, 0002
> targets 19 and master. I'll commit 0002 very shortly since it's so
> trivial.
>
> - Melanie
>
<v3-0001-Retain-newest-live-xid-as-prune-hint-after-visibi.patch><v3-0002-Use-typed-foreach-macros-for-planner-relation-lis.patch>

I think I need time to understand 0001 though there are just a few lines added.

0002 looks good, making the code cleaner.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/