Please, review a simple fix for a jdk 26 regression: [JDK-8364343](https://bugs.openjdk.org/browse/JDK-8364343). It will be pushed to 27 first and then back ported to 26. This issue impacts JVM TI scalability. The [JDK-8364343](https://bugs.openjdk.org/browse/JDK-8364343) replaced the overloaded ctor `MountUnmountDisabler(jthread thread)` with `MountUnmountDisabler(oop thread_oop)`. This caused the most common JVM TI pattern `MountUnmountDisabler disabler(thread)` (where thread is a jthread) to be resolved to `MountUnmountDisabler(bool exclusive)`. It makes the instantiated `MountUnmountDisabler` to disable `mount/unmount` transitions for all virtual thread instead of the specific one. This problem was identified with a minor tracing.
The fix restores the original ctor `MountUnmountDisabler(jthread thread)`. Testing: - TBD: run mach5 tiers 1-6 ------------- Commit messages: - 8374233: Overloaded constructor MountUnmountDisabler(jthread thread) is missed Changes: https://git.openjdk.org/jdk/pull/28965/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28965&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8374233 Stats: 9 lines in 2 files changed: 9 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/28965.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/28965/head:pull/28965 PR: https://git.openjdk.org/jdk/pull/28965
