Re: [PATCH 2/2] sparc: Check VMA range in sparc_validate_prot()

[Christoph Hellwig]

> +++ b/arch/sparc/include/asm/mman.h
> @@ -60,31 +60,41 @@ static inline int sparc_validate_prot(unsigned long prot, unsigned long addr,
>  	if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_ADI))
>  		return 0;
>  	if (prot & PROT_ADI) {
> +		struct vm_area_struct *vma, *next;
> +

I'd split all the ADI logic into a separate, preferable out of line
helper.

> +			/* reached the end of the range without errors? */
> +			if (addr+len <= vma->vm_end)

missing whitespaces around the arithmetic operator.