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| author | Noah Misch <noah@leadboat.com> | 2024-06-27 19:21:05 -0700 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2024-06-27 19:21:12 -0700 |
| commit | e038b7756df8a7487366d4e678c1e0d0d1ba5bbe (patch) | |
| tree | 952f04f8725e0cc0f0674008b10129bbba4dca1c /src/backend/utils/adt/xml.c | |
| parent | 578db9c9257de00ee695d670fb7d62b295467fe8 (diff) | |
| download | postgresql-e038b7756df8a7487366d4e678c1e0d0d1ba5bbe.tar.gz postgresql-e038b7756df8a7487366d4e678c1e0d0d1ba5bbe.zip | |
AccessExclusiveLock new relations just after assigning the OID.
This has no user-visible, important consequences, since other sessions'
catalog scans can't find the relation until we commit. However, this
unblocks introducing a rule about locks required to heap_update() a
pg_class row. CREATE TABLE has been acquiring this lock eventually, but
it can heap_update() pg_class.relchecks earlier. create_toast_table()
has been acquiring only ShareLock. Back-patch to v12 (all supported
versions), the plan for the commit relying on the new rule.
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/20240611024525.9f.nmisch@google.com
Diffstat (limited to 'src/backend/utils/adt/xml.c')
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