static inline void mb_group_bb_bitmap_alloc(struct super_block *sb,
			struct ext4_group_info *grp, ext4_group_t group)
{
	return;
}
static inline void mb_group_bb_bitmap_alloc(struct super_block *sb,
			struct ext4_group_info *grp, ext4_group_t group)
{
	return;
}