[jdk17u-dev] RFR: 8274750: java/io/File/GetXSpace.java failed: '/dev': 191488 != 190976

[Goetz Lindenmaier]

I backport this for parity with 11.0.15-oracle.

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Commit messages:
 - Backport 13265f9901ab8334bbe1e7a571a9c5f386275dbf

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/129/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=129&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274750
  Stats: 5 lines in 1 file changed: 2 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/129.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/129/head:pull/129

PR: https://git.openjdk.java.net/jdk17u-dev/pull/129