btrfs_chunk_map_device_clear_bits
btrfs_chunk_map_device_clear_bits(chunk_map, CHUNK_ALLOCATED);
btrfs_chunk_map_device_clear_bits(map, CHUNK_ALLOCATED);
btrfs_chunk_map_device_clear_bits(map, CHUNK_TRIMMED);
btrfs_chunk_map_device_clear_bits(map, CHUNK_ALLOCATED);
void btrfs_chunk_map_device_clear_bits(struct btrfs_chunk_map *map, unsigned int bits);