[jdk11u-dev] RFR: 8218145: block_if_requested is not proper inlined due to size

[Dmitry Chuyko]

This small optimization through a trivial refactoring is applicable to 11u. Original patch requires adjustment in a single place: there is initialize_serialize_page() in safepointMechanism.hpp because JDK-8213436 is not backported.

Testing: tier1, tier2.

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Commit messages:
 - [PATCH] Backport f1fbd694788715532beca66b44f1afd83745e826

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/102/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=102&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8218145
  Stats: 33 lines in 3 files changed: 11 ins; 18 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/102.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/102/head:pull/102

PR: https://git.openjdk.java.net/jdk11u-dev/pull/102