I've filed bugs for some of the mentioned copy_file_range() issues more than two years ago:
- https://bugzilla.kernel.org/show_bug.cgi?id=135461
- https://bugzilla.kernel.org/show_bug.cgi?id=135451
No response...
- https://bugzilla.kernel.org/show_bug.cgi?id=135461
- https://bugzilla.kernel.org/show_bug.cgi?id=135451
No response...
It's exceedingly rare that a maintainer of anything would scoff at all patches from users to help fix things.
Submitting a request which says “can you clarify if this filesystem behaviour is expected?” then bringing it up two years later saying “this has been unstable for a while” does not seem like “complaining” or “beating a dead horse”.