No subject

>         if (d_unlinked(file->f_dentry)) {
>                 ckpt_err(ctx, -EBADF, "%(T)%(P)Unlinked files unsupported\n",
>                          file);

Hmm.

I wonder if d_unlinked() is always true for a file which is opened,
unlinked or renamed over, but has a hard link to it from elsewhere so
the on-disk file hasn't gone away.

I guess it probably is.  That's kinda neat!  I'd hoped there would be a
good reason for f_dentry eventually ;-)

What about files opened through /proc/self/fd/N before or after the
original file was unlinked/renamed-over.  Where does the dentry point?

-- Jamie