[C/R PATCH] reject checkpoint of fd subject to F_SETSIG

[Serge E. Hallyn]

Quoting Sukadev Bhattiprolu (sukadev at linux.vnet.ibm.com):
> | Really?  I thought for sure Suka had addressed that.
> 
> I did post patches for C/R of file owner (along with file locks), but
> don't believe they were merged.  IIRC, the file-owner patches were
> blocked on the struct pid changes.

Zounds!

Acked-by: Serge Hallyn <serge.hallyn at ubuntu.com>
to Nathan's patch.

-serge