hg: jdk/submit: 8221696: MappedByteBuffer.force method to specify range

[adinn at redhat.com]

Changeset: c971f51594d0
Author:    adinn
Date:      2019-04-09 10:28 +0100
URL:       http://hg.openjdk.java.net/jdk/submit/rev/c971f51594d0

8221696: MappedByteBuffer.force method to specify range
Summary: Overload MappedByteBuffer.force to accept from and length arguments
reviewed-by: duke

! src/java.base/share/classes/java/nio/MappedByteBuffer.java
! test/jdk/java/nio/channels/FileChannel/MapTest.java