I love ZFS and use it as much as possible. But we make heavy use of UFS at $work because sendfile and fail in place. I'm in the market for a flash filesystem

I love ZFS and use it as much as possible. But we make heavy use of UFS at $work because sendfile and fail in place. I'm in the market for a flash filesystem for this use case. I doubt APFS has that all figured out, but it might be technically interesting enough to do so, and it might integrate move coherently with the pager than ZFS (the ARC makes this quite difficult but not impossible to do sendfile/mmap w/o extra copying)