git: openjdk/jdk: 8254972: Fix pretouch chunk calculations

[Thomas Schatzl]

Changeset: 2c7fc85b
Author:    Thomas Schatzl <tschatzl at openjdk.org>
Date:      2020-10-30 08:45:34 +0000
URL:       https://git.openjdk.java.net/jdk/commit/2c7fc85b

8254972: Fix pretouch chunk calculations

Reviewed-by: sjohanss, kbarrett

! src/hotspot/share/gc/shared/pretouchTask.cpp
! src/hotspot/share/gc/shared/pretouchTask.hpp