_vbus_
if((pVArray = _vbus_(pFreeArrayLink)) != 0) { \
_vbus_(pFreeArrayLink) = (PVDevice)_vbus_(pFreeArrayLink)->pVBus; \
pVArray->pVBus = (PVBus)_vbus_(pFreeArrayLink);\
_vbus_(pFreeArrayLink) = pVArray; \
_vbus_(pFreeCommands) = 0;
_vbus_(r5).enable_write_back = 1;
printf("RR18xx: RAID5 write-back %s\n", _vbus_(r5).enable_write_back? "enabled" : "disabled");
#define ArrayTables(i) ((PVDevice)&_vbus_(_ArrayTables)[i*ARRAY_VDEV_SIZE])
_vbus_(r5.enable_write_back) = *buffer-'0';
if (_vbus_(r5.enable_write_back))