struct task_struct_resvd {
	/* pointer back to the main task_struct */
	struct task_struct	*task;

#ifdef CONFIG_MMU
	struct timer_list	oom_reaper_timer;
#endif
#if defined(CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH) && defined(CONFIG_ARM64)
	struct tlbflush_unmap_batch_arm64       tlb_ubc;
#endif
};