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staging/lustre: proper support of NFS anonymous dentries

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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>
This commit is contained in:
Dmitry Eremin
2016-02-14 19:13:52 -05:00
committed by Greg Kroah-Hartman
parent 020ecc6f32
commit cb77659272
2 changed files with 23 additions and 13 deletions
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6
include/linux/exportfs.h
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@@ -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.
*/