From abccd00f8af27c585be48904515bad5658130e48 Mon Sep 17 00:00:00 2001
From: Hugo Mills <hugo@carfax.org.uk>
Date: Thu, 30 Jan 2014 20:17:00 +0000
Subject: [PATCH] btrfs: Fix 32/64-bit problem with BTRFS_SET_RECEIVED_SUBVOL
 ioctl

The structure for BTRFS_SET_RECEIVED_IOCTL packs differently on 32-bit
and 64-bit systems. This means that it is impossible to use btrfs
receive on a system with a 64-bit kernel and 32-bit userspace, because
the structure size (and hence the ioctl number) is different.

This patch adds a compatibility structure and ioctl to deal with the
above case.

Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
Signed-off-by: Josef Bacik <jbacik@fb.com>
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