[RFC v2][PATCH 02/10] ipc: allow allocation of an ipc object with desired identifier

[Serge E. Hallyn]

Quoting Oren Laadan (orenl at cs.columbia.edu):
> During restart, we need to allocate ipc objects that with the same
> identifiers as recorded during checkpoint. Modify the allocation
> code allow an in-kernel caller to request a specific ipc identifier.
> The system call interface remains unchanged.
> 
> Signed-off-by: Oren Laadan <orenl at cs.columbia.edu>

Acked-by: Serge Hallyn <serue at us.ibm.com>