readavar for non-anonymous memory

f8c563df · Frans Kaashoek · aaf5a4a6 · f8c563df
--- a/kernel/vm.cc
+++ b/kernel/vm.cc
@@ -110,6 +110,9 @@ vmnode::copy()
 int
 vmnode::demand_load()
 {
+#ifdef MTRACE 
+  mtreadavar("inode:%x.%x", ip->dev, ip->inum);
+#endif
  for (u64 i = 0; i < sz; i += PGSIZE) {
    char *p = page[i / PGSIZE];
    s64 n;