looping over a process's parents, Linux kernel

The following code loops over the ancestors of curr_task, all the way to the swapper process (i.e the "most distant" ancestor of any Linux process), where it stops because swapper == swapper->parent.

while (curr_task != curr_task->parent)       ...get curr_task info       curr_task = curr_task->parent

The problem is I also want to get the swapper process's info. There are a couple obvious ways to do this (eg goto statement after the while loop, or a single if statement after the loop that gets the swapper info). However, these obvious solutions seems fairly inelegant, and so I'm looking for a more concise solution that doesn't involve the much-maligned goto or copy/pasting code.