NILFS_SEGMENT_USAGE_ACTIVE 855 fs/nilfs2/sufile.c ~BIT(NILFS_SEGMENT_USAGE_ACTIVE); NILFS_SEGMENT_USAGE_ACTIVE 858 fs/nilfs2/sufile.c BIT(NILFS_SEGMENT_USAGE_ACTIVE); NILFS_SEGMENT_USAGE_ACTIVE 946 fs/nilfs2/sufile.c ~BIT(NILFS_SEGMENT_USAGE_ACTIVE);