ocfs2: use the OCFS2_XATTR_ROOT_SIZE macro in ocfs2_reflink_xattr_header()

Use the OCFS2_XATTR_ROOT_SIZE macro improves the readability of the
code.

Link: http://lkml.kernel.org/r/5A2E2488.70301@huawei.com
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Jun Piao <piaojun@huawei.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index c5898c5..2423e90 100644 (file)
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -6415,7 +6415,7 @@ static int ocfs2_reflink_xattr_header(handle_t *handle,
                 * and then insert the extents one by one.
                 */
                if (xv->xr_list.l_tree_depth) {
-                       memcpy(new_xv, &def_xv, sizeof(def_xv));
+                       memcpy(new_xv, &def_xv, OCFS2_XATTR_ROOT_SIZE);
                        vb->vb_xv = new_xv;
                        vb->vb_bh = value_bh;
                        ocfs2_init_xattr_value_extent_tree(&data_et,