diff --git a/drivers/video/drm/drm_gem.c b/drivers/video/drm/drm_gem.c
index 5cb8e3024b..b50b3c392d 100644
--- a/drivers/video/drm/drm_gem.c
+++ b/drivers/video/drm/drm_gem.c
@@ -217,6 +217,7 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle)
 	 * we may want to use ida for number allocation and a hash table
 	 * for the pointers, anyway.
 	 */
+
 	spin_lock(&filp->table_lock);
 
 	/* Check if we currently have a reference on the object */
@@ -227,6 +228,8 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle)
 	}
 	dev = obj->dev;
 
+    printf("%s handle %d obj %p\n", __FUNCTION__, handle, obj);
+
 	/* Release reference and decrement refcount. */
 	idr_remove(&filp->object_idr, handle);
 	spin_unlock(&filp->table_lock);
diff --git a/drivers/video/drm/i915/i915_gem.c b/drivers/video/drm/i915/i915_gem.c
index 597eebc1c0..ab7c4c09ff 100644
--- a/drivers/video/drm/i915/i915_gem.c
+++ b/drivers/video/drm/i915/i915_gem.c
@@ -237,6 +237,8 @@ i915_gem_create(struct drm_file *file,
 	int ret;
 	u32 handle;
 
+    ENTER();
+
 	size = roundup(size, PAGE_SIZE);
 	if (size == 0)
 		return -EINVAL;
@@ -259,6 +261,9 @@ i915_gem_create(struct drm_file *file,
 	trace_i915_gem_object_create(obj);
 
 	*handle_p = handle;
+
+    printf("%s obj %p handle %d\n", __FUNCTION__, obj, handle);
+
 	return 0;
 }
 
@@ -1491,11 +1496,11 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
 	for_each_sg(obj->pages->sgl, sg, page_count, i) {
 		struct page *page = sg_page(sg);
 
-
-
-//       page_cache_release(page);
+        page_cache_release(page);
 	}
     //DRM_DEBUG_KMS("%s release %d pages\n", __FUNCTION__, page_count);
+    printf("%s release %d pages\n", __FUNCTION__, page_count);
+
 	obj->dirty = 0;
 
 	sg_free_table(obj->pages);
@@ -3506,6 +3511,7 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj)
 
 //   if (obj->phys_obj)
 //       i915_gem_detach_phys_object(dev, obj);
+    printf("%s obj %p\n", __FUNCTION__, obj);
 
 	obj->pin_count = 0;
 	if (WARN_ON(i915_gem_object_unbind(obj) == -ERESTARTSYS)) {
@@ -3528,6 +3534,12 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj)
 //   if (obj->base.import_attach)
 //       drm_prime_gem_destroy(&obj->base, NULL);
 
+    if(obj->base.filp != NULL)
+    {
+        printf("filp %p\n", obj->base.filp);
+        shmem_file_delete(obj->base.filp);
+    }
+
 	drm_gem_object_release(&obj->base);
 	i915_gem_info_remove_obj(dev_priv, obj->base.size);
 
diff --git a/drivers/video/drm/i915/kms_display.c b/drivers/video/drm/i915/kms_display.c
index 98aaeea361..e414f5cb7b 100644
--- a/drivers/video/drm/i915/kms_display.c
+++ b/drivers/video/drm/i915/kms_display.c
@@ -652,6 +652,8 @@ typedef struct
 
 struct drm_i915_mask {
     __u32 handle;
+    __u32 width;
+    __u32 height;
     __u32 bo_size;
     __u32 bo_pitch;
     __u32 bo_map;
@@ -693,6 +695,10 @@ int i915_mask_update(struct drm_device *dev, void *data,
     {
         static warn_count;
 
+        mask->width    = winrc.right - winrc.left + 1;
+        mask->height   = winrc.bottom - winrc.top + 1;
+        mask->bo_pitch = (mask->width+15) & ~15;
+
         if(warn_count < 1)
         {
             printf("left %d top %d right %d bottom %d\n",
@@ -702,6 +708,7 @@ int i915_mask_update(struct drm_device *dev, void *data,
         };
     };
 
+
     slot = *((u8*)CURRENT_TASK);
 
     if( mask_seqno[slot] != os_display->mask_seqno)
@@ -730,7 +737,7 @@ int i915_mask_update(struct drm_device *dev, void *data,
         src_offset+= get_display_map();
         dst_offset = (u8*)mask->bo_map;
 
-        u32_t tmp_h = winrc.bottom - winrc.top;
+        u32_t tmp_h = mask->height;
 
         ifl = safe_cli();
         {
@@ -755,12 +762,6 @@ int i915_mask_update(struct drm_device *dev, void *data,
                 src_offset+= os_display->width;
                 dst_offset+= mask->bo_pitch;
 
-//            while( tmp_w--)
-//            {
-//                *(tmp_src) = (*tmp_dst==slot)?0x1:0x00;
-//                tmp_src++;
-//                tmp_dst++;
-//            };
                 while(tmp_w >= 64)
                 {
                     __asm__ __volatile__ (
diff --git a/drivers/video/drm/i915/main.c b/drivers/video/drm/i915/main.c
index 61a6ce8bb5..5b61fc66d1 100644
--- a/drivers/video/drm/i915/main.c
+++ b/drivers/video/drm/i915/main.c
@@ -125,6 +125,7 @@ u32_t drvEntry(int action, char *cmdline)
 #define SRV_BLIT_TEXTURE        16
 #define SRV_BLIT_VIDEO          17
 
+
 #define SRV_GET_PCI_INFO            20
 #define SRV_GET_PARAM           21
 #define SRV_I915_GEM_CREATE     22
@@ -140,6 +141,7 @@ u32_t drvEntry(int action, char *cmdline)
 #define SRV_I915_GEM_THROTTLE       32
 #define SRV_FBINFO                  33
 #define SRV_I915_GEM_EXECBUFFER2    34
+#define SRV_MASK_UPDATE             35
 
 
 
@@ -272,6 +274,10 @@ int _stdcall display_handler(ioctl_t *io)
             retval = i915_gem_execbuffer2(main_device, inp, file);
             break;
 
+        case SRV_MASK_UPDATE:
+            retval = i915_mask_update(main_device, inp, file);
+            break;
+
     };
 
     return retval;
diff --git a/drivers/video/drm/i915/utils.c b/drivers/video/drm/i915/utils.c
index 77d7890779..837735bf92 100644
--- a/drivers/video/drm/i915/utils.c
+++ b/drivers/video/drm/i915/utils.c
@@ -29,8 +29,8 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
     filep->allocated = 0;
     filep->vma       = NULL;
 
-//    dbgprintf("%s file %p pages %p count %d\n",
-//              __FUNCTION__,filep, filep->pages, filep->pages);
+    printf("%s file %p pages %p count %d\n",
+              __FUNCTION__,filep, filep->pages, count);
 
     return filep;
 }
@@ -94,4 +94,11 @@ err:
     return -ENOMEM;
 };
 
+void shmem_file_delete(struct file *filep)
+{
+    printf("%s file %p pages %p count %d\n",
+            __FUNCTION__, filep, filep->pages, filep->count);
 
+    if(filep->pages)
+        kfree(filep->pages);
+}