Hi,
Two parts here:
1) The wakeup fix that went into 5.10-stable, but hadn't been done for 5.15-stable yet. It was the last 3 patches in the 5.10-stable backport for io_uring
2) Other patches that were marked for stable or should go to stable, but initially failed.
This gets us to basically parity on the regression test front for 5.15, and have all been runtime tested.
Please queue up for the next 5.15-stable, thanks!