[pnfs] pnfs 2.6.18 bakeathon patches

[Iyer, Rahul]

> 
> I think that we just need to change the code that use the 
> #define to the varibale set by /proc/....
> That is what Rahul said at the meeting. Right ? 
> 
> >

Yes, I had. But it turns out this has already been fixed. In the
function below,

/* Initialize the values to be used by the client in CREATE_SESSION */
void nfs4_init_channel_attrs(struct nfs4_client *clp,
                                struct nfs4_channel_attrs *fc_attrs,
                                struct nfs4_channel_attrs *bc_attrs)
{
        /* XXX: We need to have good values here... 32K is a wild guess
*/
        fc_attrs->headerpadsz = bc_attrs->headerpadsz = 0;
        fc_attrs->max_rqst_sz = bc_attrs->max_rqst_sz =
NFS_MAX_FILE_IO_SIZE;
        fc_attrs->max_resp_sz = bc_attrs->max_resp_sz =
NFS_MAX_FILE_IO_SIZE;
        fc_attrs->max_resp_sz_cached = bc_attrs->max_resp_sz_cached =
NFS_MAX_FILE_IO_SIZE;
        fc_attrs->max_ops = bc_attrs->max_ops = 0xFFFFFFFF;
        fc_attrs->max_reqs = bc_attrs->max_reqs =
                                clp->cl_rpcclient->cl_xprt->max_reqs;
        fc_attrs->rdma_attrs = bc_attrs->rdma_attrs = 0;

}

The max_reqs is set to cl_prt->max_reqs. This is changed as and when the
/proc value changes. But a remount is required after the change.
-Rahul