Hi! As a result of discussion in the thread [0], Robert Haas proposed to focus on making SLRU 64 bit, as a first step towards 64 bit XIDs. Here is the patch set.
In overall, code of this patch set is based on the existing code from [0] and may be simplified, due to the fact, that SLRU_PAGES_PER_SEGMENT is not meant to be changed now. But I decided to leave it that way. At least for now. As always, reviews and opinions are very welcome. Should we change status for this thread to "need review"? [0] https://www.postgresql.org/message-id/flat/CA%2BTgmoZFmTGjgkmjgkcm2-vQq3_TzcoMKmVimvQLx9oJLbye0Q%40mail.gmail.com#03a4ab82569bb7b112db4a2f352d96b9 -- Best regards, Maxim Orlov.
v51-0003-Make-pg_upgrade-from-32-bit-to-64-bit-SLRU.patch
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v51-0001-Use-internal-64-bit-numbering-of-SLRU-pages.patch
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v51-0002-Use-64-bit-pages-representation-in-SLRU-callers.patch
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