Buffer ReadMe Confuse

From: jacktby jacktby <jacktby(at)gmail(dot)com>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Buffer ReadMe Confuse
Date: 2023-09-14 16:05:28
Message-ID: 127518CC-8CC7-4CEC-AB12-540F43EE6940@gmail.com
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In buffer README, I see “Pins may not be held across transaction boundaries, however.” I think for different transactions, they can pin the same buffer page, why not? For concurrent read transactions, they could read the one and the same buffer page.

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