byte_in_group    2642 fs/btrfs/block-group.c 	u64 byte_in_group;
byte_in_group    2673 fs/btrfs/block-group.c 		byte_in_group = bytenr - cache->key.objectid;
byte_in_group    2674 fs/btrfs/block-group.c 		WARN_ON(byte_in_group > cache->key.offset);
byte_in_group    2684 fs/btrfs/block-group.c 		num_bytes = min(total, cache->key.offset - byte_in_group);