Move index statistics into their own stats kind

Cleanup comments/docs around the new shmem request callbacks

Tidy up #ifdef USE_INJECTION_POINTS guards

Convert all remaining subsystems to use the new shmem allocation API

Convert buffer manager to use the new shmem allocation functions

Add alignment option to ShmemRequestStruct()

Change wal_compression=on to the first of zstd, lz4, pglz

read stream: Split decision about look ahead for AIO and combining

read_stream: Only increase read-ahead distance when waiting for IO

aio: io_uring: Trigger async processing for large IOs

heapam: Keep buffer pins across index scan resets.

heapam: Track heap block in IndexFetchHeapData.

Fix pg_strupper/lower/title/fold() functions to work with C locale

Redefine max_files_per_process to control additionally opened files

pgbench: Increase RLIMIT_NOFILE if necessary

Reduce non-leaf keys overlap in GiST indexes produced by a sorted build

Initialize read stream before fetching metapage in hash bulk-deletion

Optimize hash index bulk-deletion with streaming read

pgstattuple: Optimize pgstattuple_approx() with streaming read

pgstattuple: Optimize btree and hash index functions with streaming read

bloom: Optimize VACUUM and bulk-deletion with streaming read

Silence Coverity warning about unused visibilitymap_clear() result

Turn visibilitymap_clear() Assert back into an error

Make VM clear take a RelFileLocator and not fake relcache

Test that VM clear registers VM buffers

Allow old WAL recycling during REPACK CONCURRENTLY

Advance restart_lsn more eagerly in LogicalConfirmReceivedLocation

Remove unnecessary signal handler change

Revert "Allow logical replication snapshots to be database-specific"

Move REPACK (CONCURRENTLY) test out of stock regression tests

Allow IO time to be counted without a matching IO operation in pg_stat_io

Fix autovacuum's database sorting.

Use new overflow-safe integer comparison functions.

Introduce overflow-safe integer comparison functions.

Replace calls to pg_qsort() with the qsort() macro.

Clean up 019_replslot_limit.pl comments

Stabilize 019_replslot_limit.pl: wait on slot restart_lsn

Fix memory ordering in WAIT FOR LSN wakeup mechanism

Improve WAIT FOR LSN test coverage

Wake standby_write/standby_flush waiters from the WAL replay loop