[Bug 50281] fsync patch for wine 6.0-rc1 (without staging)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50281

--- Comment #19 from [e-mail] ---
(In reply to Zeb Figura from comment #18)
> The current hope is to obviate esync with a new Linux kernel driver capable
> of performantly emulating NT synchronization primitives.

What is the actual approach to that?
I was able to find an old mail to ntsync/winesync but sadly nothing about it's
progress.
Is it still in developement?