ocfs2: Update i_blocks in reflink operations.

In reflink, we need to upate i_blocks for the target inode.

Reported-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 9e96921..29405f2 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4075,6 +4075,7 @@
 	OCFS2_I(t_inode)->ip_dyn_features = OCFS2_I(s_inode)->ip_dyn_features;
 	spin_unlock(&OCFS2_I(t_inode)->ip_lock);
 	i_size_write(t_inode, size);
+	t_inode->i_blocks = s_inode->i_blocks;
 
 	di->i_xattr_inline_size = s_di->i_xattr_inline_size;
 	di->i_clusters = s_di->i_clusters;