[XFS] Fix a bad pointer dereference in the quota statvfs handling.

SGI-PV: 955993
SGI-Modid: xfs-linux-melb:xfs-kern:26934a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index f137856..db8872b 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -203,7 +203,7 @@
 	if (error || !vnode)
 		return error;
 
-	mp = XFS_BHVTOM(bhv);
+	mp = xfs_vfstom(bhvtovfs(bhv));
 	ip = xfs_vtoi(vnode);
 
 	if (!(ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))