RFR: 8276107: Preventive collections trigger before maxing out heap [v2]

[Thomas Schatzl]

> Hi all,
> 
>   can I have reviews for this small fix for an issue where preventive gcs that are supposed to prevent evacuation failure were also started if there were only not enough free committed regions available but more than enough uncommitted regions to expand the heap (to avoid the evacuation failure).
> 
> Testing: gha, tier1-3
> 
> Thanks,
>   Thomas

Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:

  Fix log message

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6160/files
  - new: https://git.openjdk.java.net/jdk/pull/6160/files/a9e53bc2..86f1aff3

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6160&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6160&range=00-01

  Stats: 12 lines in 1 file changed: 2 ins; 0 del; 10 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6160.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6160/head:pull/6160

PR: https://git.openjdk.java.net/jdk/pull/6160