From 0110e2ec5c0f230beb439885bd1f8505e783e742 Mon Sep 17 00:00:00 2001 From: Andres Freund Date: Wed, 17 Sep 2025 20:28:43 -0400 Subject: [PATCH] Mark shared buffer lookup table HASH_FIXED_SIZE StrategyInitialize() calls InitBufTable() with maximum number of entries that the buffer lookup table can ever have. Thus there should not be any need to allocate more element after initialization. Hence mark the hash table as fixed sized. Author: Ashutosh Bapat Discussion: https://postgr.es/m/CAExHW5v0jh3F_wj86yC=qBfWk0uiT94qy=Z41uzAHLHh0SerRA@mail.gmail.com --- src/backend/storage/buffer/buf_table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/backend/storage/buffer/buf_table.c b/src/backend/storage/buffer/buf_table.c index a50955d5286..9d256559bab 100644 --- a/src/backend/storage/buffer/buf_table.c +++ b/src/backend/storage/buffer/buf_table.c @@ -62,7 +62,7 @@ InitBufTable(int size) SharedBufHash = ShmemInitHash("Shared Buffer Lookup Table", size, size, &info, - HASH_ELEM | HASH_BLOBS | HASH_PARTITION); + HASH_ELEM | HASH_BLOBS | HASH_PARTITION | HASH_FIXED_SIZE); } /* -- 2.47.3