RFR: 8274750: java/io/File/GetXSpace.java failed: '/dev': 191488 != 190976 [v2]

[Brian Burkhalter]

> Please consider this proposed change to ignore comparing the total size of `/dev` as returned by `DF(1)` and `STAT(2)` on macOS.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8274750: Change location of check that file system is not /dev on macOS

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6122/files
  - new: https://git.openjdk.java.net/jdk/pull/6122/files/80729c5f..c48f3132

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6122&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6122&range=00-01

  Stats: 10 lines in 1 file changed: 1 ins; 7 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6122.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6122/head:pull/6122

PR: https://git.openjdk.java.net/jdk/pull/6122