[sheepdog] [PATCH] sheep: don't update vdi_iocb in vdi_* functions

[Liu Yuan]

On Fri, Aug 30, 2013 at 05:07:06PM +0900, MORITA Kazutaka wrote:
> From: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>
> 
> We are using vdi_iocb to get a snapid from a vdi object, but it looks
> like abusing of vdi_iocb.  This patch makes how to use vdi_iocb and
> vdi_info clear like as follows.
> 
>  - vdi_iocb is used to pass parameters from clients.
>  - vdi_info is used to get info from sheepdog.
> 
> To prevent from abusing them again, this patch makes some vdi_iocb
> variables constant where possible.
> 

Applied thanks

Yuan