mlx4_ib_demux_work
struct mlx4_ib_demux_work *dmxw;
dmxw = container_of(work, struct mlx4_ib_demux_work, work);
struct mlx4_ib_demux_work **dm;
dm[i] = kmalloc_obj(struct mlx4_ib_demux_work, GFP_ATOMIC);