Comment 23 for bug 1729145

@Ryan

I tried to build an Artful test kernel with your patch. However, there were compilation errors:

ubuntu-artful/drivers/md/bcache/super.c:868:9: error: 'env' undeclared (first use in this function); did you mean '_end'?
   kfree(env[1]);
         ^~~
         _end

Did you have any issues compiling?