patches 2-4 look interesting, but I paused to wait for comments (if 
any).  They look like material for at least a little bit of a linux-next 
time before going upstream, not really 2.6.28-rc1 [at the time] material 
IMO...

Agreed except for the DF drain one - that is a bit of harder call. It
seems to be number 1 remaining common across PATA hardware. Can still go
back via -stable after some testing however.

Alan