+ if ((val = *addr) != 0) {
+ /* Restore the original data before leaving the function. */
+ sync();
+ *addr = save[i];
+ for (cnt = 1; cnt < maxsize / sizeof(long); cnt <<= 1) {
+ addr = base + cnt;
+ sync();
+ *addr = save[--i];
+ }
+ return (0);
+ }
+
+ for (cnt = 1; cnt < maxsize / sizeof(long); cnt <<= 1) {