[q] chdir/chroot by dentry and not by name.

[Tigran Aivazian]

Hi Al,

by reading your comments like "pass &mnt to lookup_dentry" I assume that
it is now only possible to chdir/chroot by name and not by dentry which is
rather inconvenient design.

It would seem that in order to, say, chdir, by given dentry I have to
use dentry->d_name.name and re-lookup again passing &mnt to
lookup_dentry()? Surely I am missing something because you wouldn't have
designed it this awkwardly on purpose?

Regards,
Tigran