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Mark shared buffer lookup table HASH_FIXED_SIZE

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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 <ashutosh.bapat.oss@gmail.com>
Discussion: https://postgr.es/m/CAExHW5v0jh3F_wj86yC=qBfWk0uiT94qy=Z41uzAHLHh0SerRA@mail.gmail.com
This commit is contained in:
Andres Freund
2025-09-17 20:28:43 -04:00
parent b0cc0a71e0
commit 0110e2ec5c
1 changed files with 1 additions and 1 deletions
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2
src/backend/storage/buffer/buf_table.c
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@@ -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);
}
/*