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postgresql/src/include/storage
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Noah Misch 20a48c156d WAL-log inplace update before revealing it to other sessions. 
A buffer lock won't stop a reader having already checked tuple
visibility.  If a vac_update_datfrozenid() and then a crash happened
during inplace update of a relfrozenxid value, datfrozenxid could
overtake relfrozenxid.  That could lead to "could not access status of
transaction" errors.

Back-patch to v14 - v17.  This is a back-patch of commits:

- 8e7e672cda
  (main change, on master, before v18 branched)
- 8180136652
  (defect fix, on master, before v18 branched)

It reverses commit bc6bad8857, my revert
of the original back-patch.

In v14, this also back-patches the assertion removal from commit
7fcf2faf9c.

Discussion: https://postgr.es/m/20240620012908.92.nmisch@google.com
Backpatch-through: 14-17
2025-12-16 16:13:55 -08:00
..
.gitignore When trace_lwlocks is used, identify individual lwlocks by name. 2015-09-11 14:01:39 -04:00
backendid.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
barrier.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
block.h Remove some pointless code in block.h. 2022-03-03 19:15:38 -05:00
buf.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
buf_internals.h Ensure we use the correct spelling of "ensure" 2023-11-10 00:17:07 +13:00
buffile.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
bufmgr.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
bufpage.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
checksum.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
checksum_impl.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
condition_variable.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
copydir.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
dsm.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
dsm_impl.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
fd.h Revert recent changes with durable_rename_excl() 2022-04-28 13:08:16 +09:00
fileset.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
freespace.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
fsm_internals.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
indexfsm.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
ipc.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
item.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
itemid.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
itemptr.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
large_object.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
latch.h Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
lmgr.h Lock before setting relhassubclass on RELKIND_PARTITIONED_INDEX. 2024-06-27 19:21:10 -07:00
lock.h Lock before setting relhassubclass on RELKIND_PARTITIONED_INDEX. 2024-06-27 19:21:10 -07:00
lockdefs.h For inplace update durability, make heap_update() callers wait. 2024-09-24 15:25:23 -07:00
lwlock.h lwlock: Fix quadratic behavior with very long wait lists 2024-01-18 11:12:31 +09:00
md.h Fix corruption when relation truncation fails. 2024-12-20 23:57:34 +13:00
off.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pg_sema.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pg_shmem.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
pmsignal.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
predicate.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
predicate_internals.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
proc.h WAL-log inplace update before revealing it to other sessions. 2025-12-16 16:13:55 -08:00
procarray.h Improve heuristics for compressing the KnownAssignedXids array. 2022-11-29 15:43:17 -05:00
proclist.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
proclist_types.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
procsignal.h Fix DROP {DATABASE,TABLESPACE} on Windows. 2022-02-12 10:21:23 +13:00
reinit.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
relfilenode.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
s_lock.h Allow use of __sync_lock_test_and_set for spinlocks on any machine. 2022-11-02 17:37:26 -04:00
sharedfileset.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
shm_mq.h shm_mq_sendv: Fix flushing bug when receiver not yet attached. 2022-05-31 08:46:54 -04:00
shm_toc.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
shmem.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
sinval.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
sinvaladt.h At end of recovery, reset all sinval-managed caches. 2024-10-25 06:51:07 -07:00
smgr.h Restore smgrtruncate() prototype in back-branches. 2025-01-08 10:47:43 +13:00
spin.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
standby.h Fix MVCC bug with prepared xact with subxacts on standby 2024-06-27 21:10:31 +03:00
standbydefs.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
sync.h Update copyright for 2022 2022-01-07 19:04:57 -05:00