Re: [External] Re: [QUESTION] mm: Redundant const parameter?

From: Chengming Zhou
Date: Fri May 31 2024 - 08:30:38 EST


On 2024/5/31 19:31, Dev Jain wrote:
> I guess it would be better if I send this as a patch and wait for comments.

Ah, you're right. I think it should be:

return folio_test_workingset(slab_folio(slab));

Right? Don't notice there isn't any build warning about this "const" discard.

Thanks.

>
> On 5/31/24 16:42, Dev Jain wrote:
>> Hi Chengming,
>>
>> In mm/slub.c, you had defined slab_test_node_partial() to take a const parameter.
>>
>> Is there any point of taking in a const, when you are anyways typecasting it to
>>
>> a (struct folio *) from (const struct folio *) ? In fact, at the place where you call
>>
>> slab_test_node_partial(), the struct slab *slab is not const.
>>
>> Please comment.
>>
>>
>> Thanks
>>
>> DJ
>>
>>
>>
>>