[ Upstream commit 0d7764ff58b4b45c39eb03f2c74a819c1a88fa7b ] We already have flags in block group to track various status bits, convert needs_free_space as well and reduce size of btrfs_block_group. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com> Stable-dep-of: 0657b20c5a76 ("btrfs: fix use-after-free of new block group that became unused") Signed-off-by: Sasha Levin <sashal@kernel.org>