userns: Make map_id_down a wrapper for map_id_range_down

	return id;

}

/**

 * map_id_down_base - Find idmap via binary search in static extent array.

 * Can only be called if number of mappings is equal or less than

 * UID_GID_MAP_MAX_BASE_EXTENTS.

 */

static struct uid_gid_extent *

map_id_down_base(unsigned extents, struct uid_gid_map *map, u32 id)

{

	unsigned idx;

	u32 first, last;

	/* Find the matching extent */

	for (idx = 0; idx < extents; idx++) {

		first = map->extent[idx].first;

		last = first + map->extent[idx].count - 1;

		if (id >= first && id <= last)

			return &map->extent[idx];

	}

	return NULL;

}

static u32 map_id_down(struct uid_gid_map *map, u32 id)

{

	struct uid_gid_extent *extent;

	unsigned extents = map->nr_extents;

	smp_rmb();

	if (extents <= UID_GID_MAP_MAX_BASE_EXTENTS)

		extent = map_id_down_base(extents, map, id);

	else

		extent = map_id_range_down_max(extents, map, id, 1);

	/* Map the id or note failure */

	if (extent)

		id = (id - extent->first) + extent->lower_first;

	else

		id = (u32) -1;

	return id;

	return map_id_range_down(map, id, 1);

}

/**