From 809e248299894b02e8f4eb3ee17829b2ae14ce9d Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 10 May 2019 21:03:31 -0400
Subject: [PATCH] docs:  PG 12 docs, clarify btree index changes

Reported-by: Peter Geoghegan

Discussion: https://postgr.es/m/CAH2-WzkSYOM1GJVGtAbRW-OqymoCD=QWYG6ro+GaoOW-jPRuDQ@mail.gmail.com
---
 doc/src/sgml/release-12.sgml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/src/sgml/release-12.sgml b/doc/src/sgml/release-12.sgml
index 91f914ecce..f9d27fe4fe 100644
--- a/doc/src/sgml/release-12.sgml
+++ b/doc/src/sgml/release-12.sgml
@@ -570,7 +570,9 @@ Improve speed of btree index insertions (Alexander Korotkov, Peter Geoghegan)
 </para>
 
 <para>
- LOOKUP, INDEX CLEANUP IMPROVEMENTS?
+The new code improves the space-efficiency of page splits, reduces locking
+overhead, and gives better performance for <command>UPDATE</command>s
+and <command>DELETE</command>s on indexes with many duplicates.
 </para>
 </listitem>
 
-- 
2.39.5