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Noah Misch 5c837f8fa0 For inplace update durability, make heap_update() callers wait. ... The previous commit fixed some ways of losing an inplace update. It remained possible to lose one when a backend working toward a heap_update() copied a tuple into memory just before inplace update of that tuple. In catalogs eligible for inplace update, use LOCKTAG_TUPLE to govern admission to the steps of copying an old tuple, modifying it, and issuing heap_update(). This includes MERGE commands. To avoid changing most of the pg_class DDL, don't require LOCKTAG_TUPLE when holding a relation lock sufficient to exclude inplace updaters. Back-patch to v12 (all supported versions). In v13 and v12, "UPDATE pg_class" or "UPDATE pg_database" can still lose an inplace update. The v14+ UPDATE fix needs commit 86dc90056d, and it wasn't worth reimplementing that fix without such infrastructure. Reviewed by Nitin Motiani and (in earlier versions) Heikki Linnakangas. Discussion: https://postgr.es/m/20231027214946.79.nmisch@google.com		1 year ago
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backend	For inplace update durability, make heap_update() callers wait.	1 year ago
bin	Repair pg_upgrade for identity sequences with non-default persistence.	1 year ago
common	Make fallback MD5 implementation thread-safe on big-endian systems	1 year ago
fe_utils	Prevent mis-encoding of "trailing junk after numeric literal" errors.	1 year ago
include	For inplace update durability, make heap_update() callers wait.	1 year ago
interfaces	Prevent mis-encoding of "trailing junk after numeric literal" errors.	1 year ago
makefiles	…
pl	Fix edge case in plpgsql's make_callstmt_target().	1 year ago
port	Clean up Windows-specific mutex code in libpq and ecpglib.	2 years ago
template	On NetBSD, force dynamic symbol resolution at postmaster start.	3 years ago
test	For inplace update durability, make heap_update() callers wait.	1 year ago
timezone	Update time zone data files to tzdata release 2024a.	2 years ago
tools	Improve Perl script which adds commit links to release notes	1 year ago
tutorial	Doc: sync src/tutorial/basics.source with SGML documentation.	3 years ago
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Suppress macOS warnings about duplicate libraries in link commands.	2 years ago
Makefile.shlib	Stop using "-multiply_defined suppress" on macOS.	2 years ago
nls-global.mk	…