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-rw-r--r--drivers/gpu/drm/i915/i915_gem.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c69f1fa..62ba9c1 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4110,6 +4110,11 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
obj_priv->madv = args->madv;
args->retained = obj_priv->gtt_space != NULL;
+ /* if the object is no longer bound, discard its backing storage */
+ if (i915_gem_object_is_purgeable(obj_priv) &&
+ obj_priv->gtt_space == NULL)
+ i915_gem_object_truncate(obj);
+
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);