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fcc0e27f45
Like in PerformOffsetsTruncation() and e.g. in TruncateSUBTRANS(), need to step back to previous page at page boundary, to avoid passing a cutoff page to SimpleLruTruncate() that hasn't been created yet. Otherwise you can get a bogus 'LOG: could not truncate directory "pg_multixact/members": apparent wraparound' message in the log. Reported-by: Noah Misch <noah@leadboat.com> Discussion: https://www.postgresql.org/message-id/20260827231757.78.noahmisch@microsoft.com Backpatch-through: 19