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From: Andres Freund <[email protected]>
To: Melanie Plageman <[email protected]>
Cc: Kirill Reshke <[email protected]>
Cc: Heikki Linnakangas <[email protected]>
Cc: Matthias van de Meent <[email protected]>
Cc: [email protected]
Cc: Thomas Munro <[email protected]>
Cc: Noah Misch <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Michael Paquier <[email protected]>
Subject: Re: Buffer locking is special (hints, checksums, AIO writes)
Date: Wed, 14 Jan 2026 10:20:02 -0500
Message-ID: <4slwsm2e5zzn666yyypn27xo7nlcatskfkpdgpeumpxyvrjgm6@joyw5icpmz5y> (raw)
In-Reply-To: <CAAKRu_YnT_+ziEQesr4AnZM5cn8=0hHBGiTvpdDC1qPkYhBAYQ@mail.gmail.com>
References: <[email protected]>
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	<CAAKRu_YnT_+ziEQesr4AnZM5cn8=0hHBGiTvpdDC1qPkYhBAYQ@mail.gmail.com>

Hi,

On 2026-01-14 09:17:22 -0500, Melanie Plageman wrote:
> On Tue, Jan 13, 2026 at 7:49 PM Andres Freund <[email protected]> wrote:
> > I also wonder if we could merge BufferIO into the private refcount
> > infrastructure, similar to how the patches store the lockmode in the private
> > refcount.  The separate resowner acquisition does show up in profiles when
> > reading from the kernel page cache, so that'd be a nice (but small)
> > improvement.
> 
> When you say "BufferIO", do you mean io_wref in the BufferDesc?

I was trying to refer to ResourceOwnerRememberBufferIO(),
ResourceOwnerForgetBufferIO(), ResOwnerReleaseBufferIO(), etc. That's
basically used to unset BM_IO_IN_PROGRESS when an error occurs while trying to
perform IO.

Greetings,

Andres Freund






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