include ext4

[Ben Collins]

On Mon, 2008-08-04 at 18:47 -0500, Justin Dugger wrote:
> On Mon, Aug 4, 2008 at 5:43 PM, Ben Collins <ben.collins at canonical.com> wrote:
> > There's no good reason to enable ext4 except for the case where people
> > are working to debug/test/develop it. In such cases, you are likely
> > going to be rebuilding kernels/modules anyway.
> >
> > If you really want it, grab the ext4 source and compile it against our
> > headers.
> 
> Is ext4 not in the mainline kernel?

It is, and you can grab the subdir from mainline and compile it without
any problems against our headers.