DQUOT_STATE_LAST
#define DQUOT_QUOTA_SYS_FILE (1 << DQUOT_STATE_LAST)
#define DQUOT_NEGATIVE_USAGE (1 << (DQUOT_STATE_LAST + 1))
#define DQUOT_NOLIST_DIRTY (1 << (DQUOT_STATE_LAST + 2))