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doc: Correct description of values used in FSM for indexes

Michael Paquier <michael@paquier.xyz>

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Commit: e5cf186277f917c3743f34931b151c22555456d9
Author: Michael Paquier <michael@paquier.xyz>
Date: 2025-03-27T01:20:51Z
Releases: 13.21 
doc: Correct description of values used in FSM for indexes

The implementation of FSM for indexes is simpler than heap, where 0 is
used to track if a page is in-use and (BLCKSZ - 1) if a page is free.
One comment in indexfsm.c and one description in the documentation of
pg_freespacemap were incorrect about that.

Author: Alex Friedman <alexf01@gmail.com>
Discussion: https://postgr.es/m/71eef655-c192-453f-ac45-2772fec2cb04@gmail.com
Backpatch-through: 13

Files

PathChange+/−
doc/src/sgml/pgfreespacemap.sgml modified +1 −1
src/backend/storage/freespace/indexfsm.c modified +1 −1

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