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-rw-r--r--drivers/gpu/drm/i915/i915_gem.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index ad672d85482..24fe8c10b4b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2309,7 +2309,14 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
}
obj_priv = obj->driver_private;
- args->busy = obj_priv->active;
+ /* Don't count being on the flushing list against the object being
+ * done. Otherwise, a buffer left on the flushing list but not getting
+ * flushed (because nobody's flushing that domain) won't ever return
+ * unbusy and get reused by libdrm's bo cache. The other expected
+ * consumer of this interface, OpenGL's occlusion queries, also specs
+ * that the objects get unbusy "eventually" without any interference.
+ */
+ args->busy = obj_priv->active && obj_priv->last_rendering_seqno != 0;
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);