From 6caea2f980ac446427b891b9681386cb10d636d7 Mon Sep 17 00:00:00 2001
From: Alexey Lyashkov <alexey_lyashkov@xyratex.com>
Date: Fri, 28 Feb 2014 21:16:34 -0500
Subject: [PATCH] lustre/mdc: use ibits_known mask for lock match

Before revalidating a lock on the client, mask the lock bits against
the lock bits supported by the server (ibits_known), so newer clients
will find valid locks given by older server versions.

Signed-off-by: Patrick Farrell <paf@cray.com>
Signed-off-by: Alexey Lyashkov <alexey_lyashkov@xyratex.com>
Reviewed-on: http://review.whamcloud.com/8636
Xyratex-bug-id: MRP-1583
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4405
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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