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From: Melanie Plageman <[email protected]>
To: Dagfinn Ilmari Mannsåker <[email protected]>
Cc: Kirill Reshke <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Andrey Borodin <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Heikki Linnakangas <[email protected]>
Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Date: Thu, 20 Nov 2025 17:23:05 -0500
Message-ID: <CAAKRu_Z4tp9JF-ykzxJsmMbW0Wpd1tQgnZaLnae+tD-Qk75qFw@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CAAKRu_YX0NP_yhXvPnvDRjVxxprsRBM-_MZzAJskfMydMQ=ETA@mail.gmail.com>
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	<yn4zp35kkdsjx6wf47zcfmxgexxt4h2og47pvnw2x5ifyrs3qc@7uw6jyyxuyf7>
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	<2wk7jo4m4qwh5sn33pfgerdjfujebbccsmmlownybddbh6nawl@mdyyqpqzxjek>
	<CAAKRu_YR-COJ9aGnMUQqt5yoWmUBjikqrd4jGNZYouHaXpis9g@mail.gmail.com>
	<CALdSSPhiCwJwWwgJP1NmqRmnp9RS2tGOBY0gQrfLCbB+OS5_KQ@mail.gmail.com>
	<CAAKRu_YS+Ocm=OzMaZnG4egFiE9v4VYfZ25DXd6jbwegqmGYbQ@mail.gmail.com>
	<CAAKRu_ZGZSqhGt-RcmmfiSheC+1fjQdxy6_+oM-1jMn8hyVptQ@mail.gmail.com>
	<CALdSSPg+B8RTzTXhJvCcKJBqgzhPZkq0E2oqxQdv74ZNZOMVzg@mail.gmail.com>
	<CAAKRu_Zha7HcdQBv8tTtQrcry5332J6kHnOc1X=TT03LzUXDow@mail.gmail.com>
	<[email protected]>

On Thu, Nov 20, 2025 at 12:55 PM Dagfinn Ilmari Mannsåker
<[email protected]> wrote:
>
> I didn't pay much attention to this thread, so I didn't notice this
> until it got committed, but I'd like to lodge an objection to this
> formatting, especially the lack of spaces before the field names. This
> would be much more readable with one struct field per line, i.e.
>
>         PruneFreezeParams params = {
>                 .relation = rel,
>                 .buffer = buf,
>                 .reason = PRUNE_VACUUM_SCAN,
>                 .options = HEAP_PAGE_PRUNE_FREEZE,
>                 .vistest = vacrel->vistest,
>                 .cutoffs = &vacrel->cutoffs,
>         };
>
> or at a pinch, if we're really being stingy with the vertical space:
>
>         PruneFreezeParams params = {
>                 .relation = rel, .buffer = buf,
>                 .reason = PRUNE_VACUUM_SCAN, .options = HEAP_PAGE_PRUNE_FREEZE,
>                 .vistest = vacrel->vistest, .cutoffs = &vacrel->cutoffs,
>         };
>
> I had a quick grep, and every other designated struct initialiser I
> could find uses the one-field-per-line form, but they're not consistent
> about the comma after the last field.  I personally prefer having it, so
> that one can add more fields later without having to modify the
> unrelated line.

pgindent doesn't allow for a space after the comma before the period.
One reason I used struct initialization was to save space, so I'm a
bit loath to put every member on its own line. However, I don't want
to make the code less readable to others. So, I will commit an update
as you request.

- Melanie





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