If "rm dir -r" has removed just partial content of dir/dir1/, has it not removed anything in dir/dir2/?

If rm dir -r has removed just partial content of dir/dir1/ (and I cancelled rm), has it not removed anything in dir/dir2/ if dir/dir2/ still exists and contains something? My OS is Ubuntu 14.04 and filesystem ext4.

I heard How does rm -r go about recursively removing? In what order?, but can my question be answered more surely?

My OS is 64bit Ubuntu 14.04 with ext4 filesystem.