No one is going to find this inode.

There is only one ref to it -- the caller -- and no links to it.

No one is going to find this inode.
8970df0c · rsc · 1b25f3b0 · 8970df0c
--- a/fs.c
+++ b/fs.c
@@ -243,12 +243,12 @@ iput(struct inode *ip)
      panic("iput busy");
    ip->flags |= I_BUSY;
    release(&icache.lock);
-    // XXX convince rsc that no one will come find this inode.
    itrunc(ip);
    ip->type = 0;
    iupdate(ip);
    acquire(&icache.lock);
    ip->flags &= ~I_BUSY;
+    wakeup(ip);
  }
  ip->ref--;
  release(&icache.lock);