Function vdev_metaslab_fini

freebsd/contrib/openzfs/module/zfs/vdev.c:1436–1474

}

void
vdev_metaslab_fini(vdev_t *vd)
{
	if (vd->vdev_checkpoint_sm != NULL) {
		ASSERT(spa_feature_is_active(vd->vdev_spa,
		    SPA_FEATURE_POOL_CHECKPOINT));
		space_map_close(vd->vdev_checkpoint_sm);
		/*
		 * Even though we close the space map, we need to set its
		 * pointer to NULL. The reason is that vdev_metaslab_fini()
		 * may be called multiple times for certain operations
		 * (i.e. when destroying a pool) so we need to ensure that
		 * this clause never executes twice. This logic is similar
		 * to the one used for the vdev_ms clause below.
		 */
		vd->vdev_checkpoint_sm = NULL;
	}

	if (vd->vdev_ms != NULL) {
		metaslab_group_t *mg = vd->vdev_mg;
		metaslab_group_passivate(mg);

		uint64_t count = vd->vdev_ms_count;
		for (uint64_t m = 0; m < count; m++) {
			metaslab_t *msp = vd->vdev_ms[m];
			if (msp != NULL)
				metaslab_fini(msp);
		}
		vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *));
		vd->vdev_ms = NULL;

		vd->vdev_ms_count = 0;

		for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++)
			ASSERT0(mg->mg_histogram[i]);
	}
	ASSERT0(vd->vdev_ms_count);
	ASSERT3U(vd->vdev_pending_fastwrite, ==, 0);
}

typedef struct vdev_probe_stats {
	boolean_t	vps_readable;