don't bugger nd->seq on set_root_rcu() from follow_dotdot_rcu()

[pandora-kernel.git] / fs / seq_file.c

diff --git a/fs/seq_file.c b/fs/seq_file.c
index 05d6b0e..dba43c3 100644 (file)
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -449,8 +449,6 @@ EXPORT_SYMBOL(seq_path);
 
 /*
  * Same as seq_path, but relative to supplied root.
- *
- * root may be changed, see __d_path().
  */
 int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
                  char *esc)
@@ -463,6 +461,8 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
                char *p;
 
                p = __d_path(path, root, buf, size);
+               if (!p)
+                       return SEQ_SKIP;
                res = PTR_ERR(p);
                if (!IS_ERR(p)) {
                        char *end = mangle_path(buf, p, esc);
@@ -474,7 +474,7 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root,
        }
        seq_commit(m, res);
 
-       return res < 0 ? res : 0;
+       return res < 0 && res != -ENAMETOOLONG ? res : 0;
 }
 
 /*