Getting new udev to run with 2.6.28

[Al Viro]

On Sat, Jan 10, 2015 at 09:13:35PM +0200, Aaro Koskinen wrote:
> Hi,
> 
> On Sat, Jan 10, 2015 at 06:39:20PM +0100, Pavel Machek wrote:
> > N900 has real problems on 3.19, and 2.6.28 should be very well
> > debugged version. Getting it to compile on recent distribution was
> > fun, but I succeeded. Unfortunately, Debian 7's udev does not work
> > with 2.6.28...
> 
> I guess you will have many other issues too if you want to run
> such combination (legacy kernel + modern userspace). E.g. current glibc
> requires >= 2.6.32.

How current is current and just what does it require in 2.6.32?