Update inode size in dir_flush

Otherwise we leave junk dirents on unlink.

Update inode size in dir_flush
1788d6c6 · David Benjamin · 2a0a93e3 · 1788d6c6
--- a/kernel/fs.cc
+++ b/kernel/fs.cc
@@ -666,6 +666,10 @@ dir_flush(struct inode *dp)
      off += sizeof(de);
      return false;
    });
+  if (dp->size != off) {
+    dp->size = off;
+    iupdate(dp);
+  }
 }

 // Look for a directory entry in a directory.