hg: jdk/sandbox: 8179320: File.getUsableSpace() returns a negative number on very large file system

[chris.hegarty at oracle.com]

Changeset: f34ad283fcd6
Author:    bpb
Date:      2019-11-25 15:30 -0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/f34ad283fcd6

8179320: File.getUsableSpace() returns a negative number on very large file system
Reviewed-by: alanb, rriggs, darcy

! src/java.base/share/classes/java/io/File.java