From bce641a2af7199f07ec2b0a84f8fec0f26b2adc0 Mon Sep 17 00:00:00 2001
From: Michael Paquier <michael@paquier.xyz>
Date: Wed, 16 Dec 2020 10:36:03 +0900
Subject: [PATCH] doc: Fix explanation related to pg_shmem_allocations
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Offsets are shown as NULL only for anonymous allocations.

Author: Benoit Lobréau
Reviewed-by: Kyotaro Horiguchi
Discussion: https://postgr.es/m/CAPE8EZ5Lnoyqoz7aZpvQM0E8sW+hw+k6G2NULe+m4arFRrA1aA@mail.gmail.com
Backpatch-through: 13
---
 doc/src/sgml/catalogs.sgml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index 62711ee83ff..89ca59b92b5 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -12493,7 +12493,7 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
       </para>
       <para>
        The offset at which the allocation starts. NULL for anonymous
-       allocations and unused memory.
+       allocations, since details related to them are not known.
       </para></entry>
      </row>