[pnfs] o_direct and sessions

[Dean Hildebrand]

I realize that in 2.6.25, o_direct does not work as it doesn't have 
support for sessions.  It appears the problem is that setting up the 
session no longer occurs in write_setup.

I tried adding  .rpc_call_validate_args to the o_direct rpc_calls ops 
like the following:

static const struct rpc_call_ops nfs_write_direct_ops = {
+#if defined(CONFIG_NFS_V4_1)
+       .rpc_call_validate_args = nfs_write_validate,
+#endif
        .rpc_call_done = nfs_direct_write_result,
        .rpc_release = nfs_direct_write_release,
 };

But it didn't seem to work.  The session still seems uninitialized when 
the write occurs.

Do I need to do anything else to set up sessions?

Dean