Add another radix_range iterator hack

Sigh. Hacks.

Add another radix_range iterator hack
0f12d1d1 · David Benjamin · 30c6a3bd · 0f12d1d1
--- a/kernel/vm.cc
+++ b/kernel/vm.cc
@@ -615,7 +615,16 @@ vmap::sbrk(ssize_t n, uptr *addr)
 #if VM_RADIX
  auto span = rx.search_lock(newstart, newn + PGSIZE);
 #endif
+#if VM_CRANGE
+  for (auto r: span) {
+#endif
+#if VM_RADIX
+  void *last = 0;
  for (auto r: span) {
+    if (!r || r == last)
+      continue;
+    last = r;
+#endif
    vma *e = (vma*) r;

    if (e->vma_start <= newstart) {