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From: Michael Paquier <michael@paquier.xyz>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: In XLogFileInit(), fix *use_existent postcondition to suit calle
Date: Sun, 06 Apr 2025 05:45:02 +0000
Message-ID: <E1u1IoY-002uyL-1M@gemulon.postgresql.org> (raw)

In XLogFileInit(), fix *use_existent postcondition to suit callers.

Infrequently, the mismatch caused log_checkpoints messages and
TRACE_POSTGRESQL_CHECKPOINT_DONE() to witness an "added" count too high
by one.  Since that consequence is so minor, no back-patch.

This commit has been applied as of 85656bc3050f in v15 and newer
versions.  This is required on stable branches of v13 and v14 to fix a
regression reported by Noah Misch, introduced by 1f95181b44c8, causing
spurious failures in archive recovery (neither streaming nor archive
recovery) with concurrent restartpoints.  The backpatched versions of
the patches have been aligned on these branches by me, Noah Misch is the
author.  Tests have been conducted by the both of us.

Reported-by: Arun Thirupathi
Author: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/20210202151416.GB3304930@rfd.leadboat.com
Discussion: https://postgr.es/m/20250306193013.36.nmisch@google.com
Backpatch-through: 13

Branch
------
REL_14_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/8967dddf086e81b0b5ee84a197cc2773f73e131a
Author: Noah Misch <noah@leadboat.com>

Modified Files
--------------
src/backend/access/transam/xlog.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)



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