[linux-3.13.y.z] Fixes for kernel nfs server

[Kamal Mostafa]

On Thu, 2014-06-12 at 10:24 +0200, Stefan Bader wrote:
> We have a bug report about the NFS kernel server getting into
> a tight loop under certain circumstances. Looking at the debug
> data it could be seen that the RPC service seemed to be too
> quickly doing retries of some connects.
> 
> The code causing this seemed to be introduced in 3.13 by
> 
>   561ec1603171 SUNRPC: call_connect_status should recheck bind..
> 
> which has two follow up patches in 3.15 referring to it:
> 
>   1fa3e2e SUNRPC: Ensure call_connect_status() deals correctly
>           with SOFTCONN tasks
>   485f225 SUNRPC: Ensure that call_connect times out correctly
> 
> Both patches have been applied to 3.14.4 already. But the second
> (485f225) required some light adjustment to apply. A test kernel
> with both has been tested and looks to be stable.
> 
> Proposing the following patches to be included in the 3.13 longterm
> tree (and pulled into Trusty).
> 
> -Stefan
> 
> 

Thanks Stefan!  I'll get those two into the queue for 3.13.11.4.

 -Kamal

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