RFR: 8374945: Avoid fstat in os::open [v3]

[David Holmes]

On Fri, 16 Jan 2026 08:08:21 GMT, Jonas Norlinder <jnorlinder at openjdk.org> wrote:

>> Eliminate unnecessary calls to fstat in os::open akin to JDK-8373647. This optimization reduces system overhead.
>
> Jonas Norlinder has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix typo in comments

Marked as reviewed by dholmes (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29152#pullrequestreview-3679974796