[jdk17u-dev] RFR: 8297149: REDO JDK-8296889: Race condition when cancelling a request

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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Depends on: https://git.openjdk.org/jdk17u-dev/pull/3669

Commit messages:
 - Backport 134acab5a40b3f927ff6343aa49477a490e410b5

Changes: https://git.openjdk.org/jdk17u-dev/pull/3670/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3670&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297149
  Stats: 44 lines in 5 files changed: 31 ins; 6 del; 7 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3670.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3670/head:pull/3670

PR: https://git.openjdk.org/jdk17u-dev/pull/3670