prevref           933 uvm/uvm_amap.c  	int ref, len, prevref, prevlen;
prevref           954 uvm/uvm_amap.c 		pp_getreflen(ppref, prevlcv, &prevref, &prevlen);
prevref           961 uvm/uvm_amap.c 		prevref = -1;
prevref           984 uvm/uvm_amap.c 		if (lcv == prevlcv + prevlen && ref == prevref) {