Code review feedback.

src/mem/alloc.h

@@ -522,6 +522,9 @@ namespace snmalloc
       size_t size = 0;
       RemoteList list[REMOTE_SLOTS];
 
+      /// Used to find the index into the array of queues for remote
+      /// deallocation
+      /// r is used for which round of sending this is.
       inline size_t get_slot(size_t id, size_t r)
       {
         constexpr size_t allocator_size =

src/mem/remoteallocator.h

@@ -30,6 +30,10 @@ namespace snmalloc
     }
   };
 
+  static_assert(
+    sizeof(Remote) <= MIN_ALLOC_SIZE,
+    "Needs to be able to fit in smallest allocation.");
+
   struct RemoteAllocator
   {
     using alloc_id_t = Remote::alloc_id_t;