drm/i915: no need to hold mutex for object lookup (b1ce786c) · Commits · 戴 / test

drivers/gpu/drm/i915/i915_gem.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -3701,15 +3701,14 @@ i915_gem_busy_ioctl(struct drm_device dev, void data,
		struct drm_gem_object *obj;
		struct drm_i915_gem_object *obj_priv;

		mutex_lock(&dev->struct_mutex);
		obj = drm_gem_object_lookup(dev, file_priv, args->handle);
		if (obj == NULL) {
		DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n",
		args->handle);
		mutex_unlock(&dev->struct_mutex);
		return -EBADF;
		}

		mutex_lock(&dev->struct_mutex);
		/* Update the active list for the hardware's current position.
		* Otherwise this only updates on a delayed timer or when irqs are
		* actually unmasked, and our working set ends up being larger than