Remove GC epoches from radix

RCU-freeing the radix_nodes was punted for now, so we shouldn't need this.

Remove GC epoches from radix
a48cb5e5 · David Benjamin · 93b1e976 · a48cb5e5 · a48cb5e5
--- a/include/radix.hh
+++ b/include/radix.hh
@@ -182,8 +182,6 @@ struct radix_range {
  u64 start_;
  u64 size_;
-  scoped_gc_epoch gc_;
  radix_range(radix* r, u64 start, u64 size);
  radix_range(radix_range&&);
  ~radix_range();

--- a/kernel/radix.cc
+++ b/kernel/radix.cc
@@ -146,7 +146,6 @@ radix::~radix()
 radix_elem*
 radix::search(u64 key)
 {
-  scoped_gc_epoch gc;
  radix_entry cur = root_.load();
  for (u32 level = radix_levels-1; level >= 0 && !cur.is_elem(); level--) {
    cur = cur.node()->child[index(key >> shift_, level)].load();