Re: [RFC 1/4] mm: remove unused TASK_SIZE_OF()

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On Fri, Dec 30, 2016 at 06:56:31PM +0300, Dmitry Safonov wrote:
> All users of TASK_SIZE_OF(tsk) have migrated to mm->task_size or
> TASK_SIZE_MAX since:
> commit d696ca016d57 ("x86/fsgsbase/64: Use TASK_SIZE_MAX for
> FSBASE/GSBASE upper limits"),
> commit a06db751c321 ("pagemap: check permissions and capabilities at
> open time"),
> 
> Signed-off-by: Dmitry Safonov <dsafonov@xxxxxxxxxxxxx>
> ---
...

> diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
> index 6bca916a5ba0..c53e8e2a51ac 100644
> --- a/arch/s390/include/asm/processor.h
> +++ b/arch/s390/include/asm/processor.h
> @@ -89,10 +89,9 @@ extern void execve_tail(void);
>   * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
>   */
> 
> -#define TASK_SIZE_OF(tsk)	((tsk)->mm->context.asce_limit)
>  #define TASK_UNMAPPED_BASE	(test_thread_flag(TIF_31BIT) ? \
>  					(1UL << 30) : (1UL << 41))
> -#define TASK_SIZE		TASK_SIZE_OF(current)
> +#define TASK_SIZE		(current->mm->context.asce_limit)
>  #define TASK_MAX_SIZE		(1UL << 53)
> 
>  #define STACK_TOP		(1UL << (test_thread_flag(TIF_31BIT) ? 31:42))

FWIW, for the s390 part:

Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>

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