Re: [PATCH v2] mm: skip less than check for MAX_NR_ZONES

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On 8/20/24 12:40 PM, Andrew Morton wrote:
> On Mon, 19 Aug 2024 19:26:28 +0800 alexs@xxxxxxxxxx wrote:
> 
>> From: Alex Shi <alexs@xxxxxxxxxx>
>>
>> Remove unnecessary '<' check for ZONES_SHIFT assignment.
>>
>> ...
>>
>> --- a/include/linux/page-flags-layout.h
>> +++ b/include/linux/page-flags-layout.h
>> @@ -14,7 +14,7 @@
>>   */
>>  #if MAX_NR_ZONES < 2
>>  #define ZONES_SHIFT 0
>> -#elif MAX_NR_ZONES <= 2
>> +#elif MAX_NR_ZONES == 2
>>  #define ZONES_SHIFT 1
>>  #elif MAX_NR_ZONES <= 4
>>  #define ZONES_SHIFT 2
> 
> mmm, why.  I think it looks more logical (and certainly more
> consistent) the way things are now.
> 

Uh, then let's keep the current code if the logical looks better.

In fact, the logical is in preprocess, has nothing change in the final object file.

Thanks for comments!
 




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