[intel-gem] Use shmem_getpage instead of find_or_create_page

find_or_create_page doesn't quite set up pages correctly; any newly created
pages aren't hooked into the shmem object quite right; user space mmaps of
those pages end up mapping pages full of zeros which then get written to the
real pages inappropriately. This patch requires that the kernel export
shmem_getpage.

1 files changed, 6 insertions, 0 deletions

diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index 4d8a40d4..94e80cda 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -332,6 +332,12 @@ struct drm_i915_gem_object {
 	 */
 	int active;
 
+	/**
+	 * This is set if the object has been written to since last bound
+	 * to the GTT
+	 */
+	int dirty;
+
 	/** AGP memory structure for our GTT binding. */
 	DRM_AGP_MEM *agp_mem;