S_FREERXPAGECOUNT
#define V_FREERXPAGECOUNT(x) ((x) << S_FREERXPAGECOUNT)
#define G_FREERXPAGECOUNT(x) (((x) >> S_FREERXPAGECOUNT) & M_FREERXPAGECOUNT)
#define V_FREERXPAGECOUNT(x) ((x) << S_FREERXPAGECOUNT)
#define G_FREERXPAGECOUNT(x) (((x) >> S_FREERXPAGECOUNT) & M_FREERXPAGECOUNT)