Function vdev_autotrim_stop_wait

freebsd/contrib/openzfs/module/zfs/vdev_trim.c:1473–1489

* Wait for the vdev_autotrim_thread associated with the passed top-level * vdev to be terminated (canceled or stopped). */

 * vdev to be terminated (canceled or stopped).
 */
void
vdev_autotrim_stop_wait(vdev_t *tvd)
{
	mutex_enter(&tvd->vdev_autotrim_lock);
	if (tvd->vdev_autotrim_thread != NULL) {
		tvd->vdev_autotrim_exit_wanted = B_TRUE;

		while (tvd->vdev_autotrim_thread != NULL) {
			cv_wait(&tvd->vdev_autotrim_cv,
			    &tvd->vdev_autotrim_lock);
		}

		ASSERT3P(tvd->vdev_autotrim_thread, ==, NULL);
		tvd->vdev_autotrim_exit_wanted = B_FALSE;
	}
	mutex_exit(&tvd->vdev_autotrim_lock);
}

/*
 * Wait for all of the vdev_autotrim_thread associated with the pool to