pgsql: doc: Correct description of values used in FSM for indexes

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: doc: Correct description of values used in FSM for indexes
Date: 2025-03-27 01:21:17
Message-ID: E1txbvp-001BLd-1L@gemulon.postgresql.org
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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(at)gmail(dot)com>
Discussion: https://postgr.es/m/71eef655-c192-453f-ac45-2772fec2cb04@gmail.com
Backpatch-through: 13

Branch
------
REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/7ca50f90c09740b29d5695659824f172aa4a9135

Modified Files
--------------
doc/src/sgml/pgfreespacemap.sgml | 2 +-
src/backend/storage/freespace/indexfsm.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

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