Thanks for the patch. The fse and zstd warnings have been fixed in OpenZFS master already and I have just opened a pull request to fix the dnode warning. That way we can avoid patching. I will update the port when that goes in.

Ok, sounds good. When those changes get merged to src main, the commit in src main to add these warning suppressions should be reverted as well.

BTW, the Makefile in src has many more warning suppressions compared to this Makefile in the OpenZFS tree itself.