git: openjdk/jdk: 8253286: Use expand_exact() instead of expand_at() for fixed requests in G1

[Stefan Johansson]

Changeset: edc14f92
Author:    Stefan Johansson <sjohanss at openjdk.org>
Date:      2020-09-21 12:02:33 +0000
URL:       https://git.openjdk.java.net/jdk/commit/edc14f92

8253286: Use expand_exact() instead of expand_at() for fixed requests in G1

Reviewed-by: tschatzl, ayang

! src/hotspot/share/gc/g1/heapRegionManager.cpp