diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index b890be0..a50d9db 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -53,6 +53,19 @@
 }
 
 /*
+ * Called at each iput().
+ *
+ * The inode may be "bad" if ext2_read_inode() saw an error from
+ * ext2_get_inode(), so we need to check that to avoid freeing random disk
+ * blocks.
+ */
+void ext2_put_inode(struct inode *inode)
+{
+	if (!is_bad_inode(inode))
+		ext2_discard_prealloc(inode);
+}
+
+/*
  * Called at the last iput() if i_nlink is zero.
  */
 void ext2_delete_inode (struct inode * inode)