[GFS2] split and annotate gfs2_statfs_change

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index b47d959..9c786d1 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -215,7 +215,7 @@
 {
 	struct super_block *sb = dentry->d_inode->i_sb;
 	struct gfs2_sbd *sdp = sb->s_fs_info;
-	struct gfs2_statfs_change sc;
+	struct gfs2_statfs_change_host sc;
 	int error;
 
 	if (gfs2_tune_get(sdp, gt_statfs_slow))