4 files changed, 7 insertions, 19 deletions
diff --git a/doc/src/sgml/pgfreespacemap.sgml b/doc/src/sgml/pgfreespacemap.sgml
index 0bcf79b02b4..0122d278e39 100644
--- a/doc/src/sgml/pgfreespacemap.sgml
+++ b/doc/src/sgml/pgfreespacemap.sgml
@@ -61,8 +61,6 @@
    The values stored in the free space map are not exact. They're rounded
    to precision of 1/256th of <symbol>BLCKSZ</symbol> (32 bytes with default <symbol>BLCKSZ</symbol>), and
    they're not kept fully up-to-date as tuples are inserted and updated.
-   In addition, small tables don't have a free space map, so these functions
-   will return zero even if free space is available.
   </para>
 
   <para>
diff --git a/doc/src/sgml/pgstattuple.sgml b/doc/src/sgml/pgstattuple.sgml
index 8797131c643..b17b3c59e0d 100644
--- a/doc/src/sgml/pgstattuple.sgml
+++ b/doc/src/sgml/pgstattuple.sgml
@@ -527,9 +527,7 @@ approx_free_percent  | 2.09
       bit set, then it is assumed to contain no dead tuples). For such
       pages, it derives the free space value from the free space map, and
       assumes that the rest of the space on the page is taken up by live
-      tuples. Small tables don't have a free space map, so in that case
-      this function will report zero free space, likewise inflating the
-      approximate tuple length.
+      tuples.
      </para>
 
      <para>
diff --git a/doc/src/sgml/ref/pgupgrade.sgml b/doc/src/sgml/ref/pgupgrade.sgml
index 26e3f9ea2b9..82886760f10 100644
--- a/doc/src/sgml/ref/pgupgrade.sgml
+++ b/doc/src/sgml/ref/pgupgrade.sgml
@@ -812,13 +812,6 @@ psql --username=postgres --file=script.sql postgres
    is down.
   </para>
 
-  <para>
-   In <productname>PostgreSQL</productname> 12 and later small tables by
-   default don't have a free space map, as a space optimization.  If you are
-   upgrading a pre-12 cluster, the free space maps of small tables will
-   likewise not be transferred to the new cluster.
-  </para>
-
  </refsect1>
 
  <refsect1>
diff --git a/doc/src/sgml/storage.sgml b/doc/src/sgml/storage.sgml
index e0915b6fa01..4285b0a157d 100644
--- a/doc/src/sgml/storage.sgml
+++ b/doc/src/sgml/storage.sgml
@@ -598,13 +598,12 @@ tuple would otherwise be too big.
 <indexterm><primary>FSM</primary><see>Free Space Map</see></indexterm>
 
 <para>
-Each heap relation, unless it is very small, and each index relation, except
-for hash indexes, has a Free Space Map (FSM) to keep track of available
-space in the relation. It's stored alongside the main relation data in a
-separate relation fork, named after the filenode number of the relation, plus
-a <literal>_fsm</literal> suffix. For example, if the filenode of a relation
-is 12345, the FSM is stored in a file called <filename>12345_fsm</filename>,
-in the same directory as the main relation file.
+Each heap and index relation, except for hash indexes, has a Free Space Map
+(FSM) to keep track of available space in the relation. It's stored
+alongside the main relation data in a separate relation fork, named after the
+filenode number of the relation, plus a <literal>_fsm</literal> suffix. For example,
+if the filenode of a relation is 12345, the FSM is stored in a file called
+<filename>12345_fsm</filename>, in the same directory as the main relation file.
 </para>
 
 <para>