[sheepdog] patch for sbd

[Liu Yuan]

On Tue, Mar 03, 2015 at 01:25:41PM +0800, Xu Yifeng wrote:
> Hi,
> 
> The attached patch does not try to reconnect when network is broken,
> but allow all I/O requests to bail out, otherwise, I found
> application can not be killed
> when they are blocked on sbd I/O.
> 
> If you find it is useful, save it to disk. :-)
> 

Please submit a patch generated by git format-patch that is applicable.

Yuan