RFR: 8344882: (bf) Temporary direct buffers should not count against the upper limit on direct buffer memory [v7]

[Brian Burkhalter]

> Make the memory used by internal temporary direct buffers not count towards the upper limit on direct buffer memory.

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

  8344882: If the buffer is a slice, free it's parent's address

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22339/files
  - new: https://git.openjdk.org/jdk/pull/22339/files/c27de5a3..80d6551d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22339&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22339&range=05-06

  Stats: 13 lines in 1 file changed: 13 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22339.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22339/head:pull/22339

PR: https://git.openjdk.org/jdk/pull/22339