[crac] RFR: CRaC: Fix fds opened for logging [v3]

[Jan Kratochvil]

> CRaC: Fix fds opened for logging

Jan Kratochvil has updated the pull request incrementally with one additional commit since the last revision:

  Fix a race by new _block_async.
   - bugreported by Radim Vansa

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Changes:
  - all: https://git.openjdk.org/crac/pull/113/files
  - new: https://git.openjdk.org/crac/pull/113/files/39d38191..a4666eb4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=113&range=02
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=113&range=01-02

  Stats: 9 lines in 3 files changed: 5 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/crac/pull/113.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/113/head:pull/113

PR: https://git.openjdk.org/crac/pull/113