Re: raid5: coding style cleanup / refactor

["Dan Williams" <dan.j.williams@intel.com>]

> > I assume that you're prepared to repair all that damage to your tree, but
> > it seems a bit masochistic?
>
> It's either this or have an inconsistent coding style throughout
> raid5.c.  I figure it is worth it to have reduced code duplication
> between raid5 and raid6, and it makes it easier to add new cache
> features going forward.  I have a few more cleanups to add for a rev2 of
> this patch, but I will hold that off until the rebase is done.
>

In other words, it seemed like a good idea at the time, but I am open
to suggestions.