Johannes Weiner wrote:
quoted text
>> -	do {
>> -		BUG_ON(!pte_none(*pte));
>>     
>
> Dropping by intention?
>   

Hm, I couldn't really see the point.   But I didn't really want to 
introduce any functional changes with this patch, so I'll add it back.

quoted text
>> 	BUG_ON(addr >= end);
>> -	pfn -= addr >> PAGE_SHIFT;
>> -	pgd = pgd_offset(mm, addr);
>> -	flush_cache_range(vma, addr, end);
>>     
>
> Was the flushing redundant?  I can't spot it reappearing anywhere.

I guess its needed for virtually indexed cache architectures; I'll add 
it back.

Thanks for reviewing.

    J
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