runtime·unmarkspan  550 src/pkg/runtime/malloc.h void	runtime·unmarkspan(void *v, uintptr size);
runtime·unmarkspan  305 src/pkg/runtime/mcentral.c 	runtime·unmarkspan((byte*)(s->start<<PageShift), s->npages<<PageShift);
runtime·unmarkspan 1901 src/pkg/runtime/mgc0.c 			runtime·unmarkspan(p, 1<<PageShift);