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Andres Freund f8d7f29b3e Allow lwlocks to be disowned ... To implement AIO writes, the backend initiating writes needs to transfer the lock ownership to the AIO subsystem, so the lock held during the write can be released in another backend. Other backends need to be able to "complete" an asynchronously started IO to avoid deadlocks (consider e.g. one backend starting IO for a buffer and then waiting for a heavyweight lock held by another relation followed by the current holder of the heavyweight lock waiting for the IO to complete). To that end, this commit adds LWLockDisown() and LWLockReleaseDisowned(). If code uses LWLockDisown() it's the code's responsibility to ensure that the lock is released in case of errors. Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Discussion: https://postgr.es/m/1f6b50a7-38ef-4d87-8246-786d39f46ab9@iki.fi		10 months ago
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access	Add default_char_signedness field to ControlFileData.	10 months ago
archive	Update copyright for 2025	12 months ago
backup	Update copyright for 2025	12 months ago
bootstrap	Update copyright for 2025	12 months ago
catalog	Add default_char_signedness field to ControlFileData.	10 months ago
commands	Don't lock partitions pruned by initial pruning	10 months ago
common	Add support for OAUTHBEARER SASL mechanism	10 months ago
datatype	Avoid using timezone Asia/Manila in regression tests.	11 months ago
executor	Don't lock partitions pruned by initial pruning	10 months ago
fe_utils	Specify the encoding of input to fmtId()	11 months ago
foreign	Update copyright for 2025	12 months ago
jit	Fix grammatical typos around possessive "its"	11 months ago
lib	Add new StringInfo APIs to allow callers to specify the buffer size.	12 months ago
libpq	Add support for OAUTHBEARER SASL mechanism	10 months ago
mb	Add pg_encoding_set_invalid()	11 months ago
nodes	Don't lock partitions pruned by initial pruning	10 months ago
optimizer	Implement Self-Join Elimination	10 months ago
parser	Virtual generated columns	11 months ago
partitioning	Move PartitionPruneInfo out of plan nodes into PlannedStmt	11 months ago
pch	Update copyright for 2025	12 months ago
port	Fix comment about AVX-512 popcount support.	11 months ago
portability	Update copyright for 2025	12 months ago
postmaster	backend launchers void * arguments for binary data	10 months ago
regex	Update copyright for 2025	12 months ago
replication	backend launchers void * arguments for binary data	10 months ago
rewrite	Implement Self-Join Elimination	10 months ago
snowball	Update to latest Snowball sources.	10 months ago
statistics	Update copyright for 2025	12 months ago
storage	Allow lwlocks to be disowned	10 months ago
tcop	backend launchers void * arguments for binary data	10 months ago
tsearch	Update copyright for 2025	12 months ago
utils	Don't lock partitions pruned by initial pruning	10 months ago
.gitignore	Use <stdint.h> and <inttypes.h> for c.h integers.	1 year ago
Makefile	Use <stdint.h> and <inttypes.h> for c.h integers.	1 year ago
c.h	IWYU widely useful pragmas	12 months ago
fmgr.h	Update copyright for 2025	12 months ago
funcapi.h	Update copyright for 2025	12 months ago
getopt_long.h	IWYU widely useful pragmas	12 months ago
meson.build	Update copyright for 2025	12 months ago
miscadmin.h	Use "ssize_t" not "long" in max_stack_depth-related code.	11 months ago
pg_config.h.in	Add support for OAUTHBEARER SASL mechanism	10 months ago
pg_config_manual.h	Update copyright for 2025	12 months ago
pg_getopt.h	IWYU widely useful pragmas	12 months ago
pg_trace.h	IWYU widely useful pragmas	12 months ago
pgstat.h	Move wal_buffers_full from PgStat_PendingWalStats to WalUsage	10 months ago
pgtar.h	Update copyright for 2025	12 months ago
pgtime.h	Seek zone abbreviations in the IANA data before timezone_abbreviations.	11 months ago
port.h	Avoid breaking SJIS encoding while de-backslashing Windows paths.	11 months ago
postgres.h	IWYU widely useful pragmas	12 months ago
postgres_ext.h	IWYU widely useful pragmas	12 months ago
postgres_fe.h	IWYU widely useful pragmas	12 months ago
varatt.h	Update copyright for 2025	12 months ago
windowapi.h	Update copyright for 2025	12 months ago