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pg_buffercache: Fix memory allocation formula REL_18_STABLE github/REL_18_STABLE
authorMichael Paquier <[email protected]>
Thu, 11 Dec 2025 05:11:25 +0000 (14:11 +0900)
committerMichael Paquier <[email protected]>
Thu, 11 Dec 2025 05:11:25 +0000 (14:11 +0900)
commit580b5c2f397fbb2f74c2661cfe53203ed6acead0
tree8a62158b5ee59f8b5f0f08d0484c57fd1d9b0932tree
parent5b7bbf16db3427522d057c14bd9063ef21dff196commit | diff
pg_buffercache: Fix memory allocation formula

The code over-allocated the memory required for os_page_status, relying
on uint64 for its element size instead of an int, hence doubling what
was required.  This could mean quite a lot of memory if dealing with a
lot of NUMA pages.

Oversight in ba2a3c2302f1.

Author: David Geier <[email protected]>
Discussion: https://postgr.es/m/ad0748d4-3080-436e-b0bc-ac8f86a3466a@gmail.com
Backpatch-through: 18
contrib/pg_buffercache/pg_buffercache_pages.c diff | blob | blame | history
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