debugfs: optimize ncheck and improve its error checking

Don't call ext2fs_get_pathname() for every single directory; instead,
only call it if we find a matching directory entry.  In addition, if
ext2fs_get_pathname() fails, print the number of the parent directory
in angle parents so the user gets some additional information.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
1 file changed