Horton

Fix calculation of how much shared memory is required to store a TOC.

Fujii Masao <fujii@postgresql.org>

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Commit: 19a1d768531a75cf729dc294322c6a4460f67ed9
Author: Fujii Masao <fujii@postgresql.org>
Date: 2021-01-15T03:45:51Z
Releases: 12.6 
Fix calculation of how much shared memory is required to store a TOC.

Commit ac883ac453 refactored shm_toc_estimate() but changed its calculation
of shared memory size for TOC incorrectly. Previously this could cause too
large memory to be allocated.

Back-patch to v11 where the bug was introduced.

Author: Takayuki Tsunakawa
Discussion: https://postgr.es/m/TYAPR01MB2990BFB73170E2C4921E2C4DFEA80@TYAPR01MB2990.jpnprd01.prod.outlook.com

Files

PathChange+/−
src/backend/storage/ipc/shm_toc.c modified +2 −2

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