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From: Tom Lane <[email protected]>
To: Andres Freund <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: [email protected]
Cc: Tomas Vondra <[email protected]>
Cc: Anastasia Lubennikova <[email protected]>
Cc: Pavan Deolasee <[email protected]>
Cc: Jeff Janes <[email protected]>
Subject: Re: hio.c does visibilitymap_pin()/IO while holding buffer lock
Date: Sat, 25 Mar 2023 12:57:17 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

Andres Freund <[email protected]> writes:
> On 2023-03-25 14:34:25 +0100, Tomas Vondra wrote:
>> Can't we ensure we actually lock the vm buffer too in ReadBufferBI,
>> before calling ReadBufferExtended? Or am I confused and that's not
>> possible for some reason?

> Note that this is using P_NEW. I.e. we don't know the buffer location yet.

Maybe the relation-extension logic needs to include the ability to get
the relevant vm page?

			regards, tom lane

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