From cb77659272af51e80099c93b0e65abbf43bdaad5 Mon Sep 17 00:00:00 2001
From: Dmitry Eremin <dmitry.eremin@intel.com>
Date: Sun, 14 Feb 2016 19:13:52 -0500
Subject: staging/lustre: proper support of NFS anonymous dentries

NFS can ask to encode dentries that are not connected to the root.
The fix check for parent is NULL and encode a file handle accordingly.

Reviewed-on: http://review.whamcloud.com/8347
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4231
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Acked-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/exportfs.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'include/linux/exportfs.h')

diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h
index fa05e04c5531..d8414502edb4 100644
--- a/include/linux/exportfs.h
+++ b/include/linux/exportfs.h
@@ -96,6 +96,12 @@ enum fid_type {
 	 */
 	FILEID_FAT_WITH_PARENT = 0x72,
 
+	/*
+	 * 128 bit child FID (struct lu_fid)
+	 * 128 bit parent FID (struct lu_fid)
+	 */
+	FILEID_LUSTRE = 0x97,
+
 	/*
 	 * Filesystems must not use 0xff file ID.
 	 */
-- 
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