tree c8bcdd91b36e8663b94911c6ac2481eadbe53bb0
parent f82f5f3ac4de6c6b872fcbb3dec97f368e78ff58
author Jeremy Fitzhardinge <jeremy@goop.org> 1258495734 -0800
committer Dave Airlie <airlied@redhat.com> 1259031750 +1000

drm: make sure page protections are updated after changing vm_flags

Some architectures compute ->vm_page_prot depending on ->vm_flags, so we
need to update the protections after adjusting the flags.

AFAIK this only affects running X under Xen; without this patch you get
lots of coloured blobs on the screen, or maybe a complete lockup.  Or
anything really.

But that still depends on lots of out-of-tree stuff, so I don't think
there are any consequences for anyone else.  But it is wrong in principle.

Reported-by: Jan Beulich <JBeulich@novell.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>