Re: [PATCH] use simpler test_task_thread to test current ti flags

[Oren Laadan <orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>]

Got it.

Serge E. Hallyn wrote:
> This ought to be folded into the 
> 	'fix 31-bit s390 checkpoint/restart wrappers'
> patch which I sent earlier today.  Not a bug without it, just
> not as nice.
> 
> Signed-off-by: Serge E. Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
> ---
>  arch/s390/kernel/checkpoint.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/s390/kernel/checkpoint.c b/arch/s390/kernel/checkpoint.c
> index 8ec12c6..60ba04d 100644
> --- a/arch/s390/kernel/checkpoint.c
> +++ b/arch/s390/kernel/checkpoint.c
> @@ -148,7 +148,8 @@ int checkpoint_mm_context(struct ckpt_ctx *ctx, struct mm_struct *mm)
>  
>  int restore_thread(struct ckpt_ctx *ctx)
>  {
> -	if (test_tsk_thread_flag(current, TIF_31BIT)) {
> +	/* a 31-bit task cannot call sys_restart right now */
> +	if (test_thread_flag(TIF_31BIT)) {
>  		ckpt_err(ctx, -EINVAL, "restart from 31-bit task\n");
>  		return -EINVAL;
>  	}