tree a2b0f931e513f3aeba174b974bd5e869685fe288
parent 3230cfc34fca9d17c1628cf0e4ac25199592a69a
author Jerome Glisse <jglisse@redhat.com> 1320876926 -0500
committer Dave Airlie <airlied@redhat.com> 1323168002 +0000

drm/ttm: isolate dma data from ttm_tt V4

Move dma data to a superset ttm_dma_tt structure which herit
from ttm_tt. This allow driver that don't use dma functionalities
to not have to waste memory for it.

V2 Rebase on top of no memory account changes (where/when is my
   delorean when i need it ?)
V3 Make sure page list is initialized empty
V4 typo/syntax fixes

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>