From 1fa1e38447964d6c96b027f9f999ef105d8cf8aa Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Mon, 14 Jul 2014 11:28:20 +1000
Subject: [PATCH] NFS: teach nfs_lookup_verify_inode to handle LOOKUP_RCU

It fails with -ECHILD rather than make an RPC call.

This allows nfs_lookup_revalidate to call it in RCU-walk mode.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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