linux-kernel - Re: [PATCH 11/12] mm: pgtable: introduce generic __tlb_remove

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Message-ID: <d5d21a5d-565f-4762-a853-8e488948b2a9@bytedance.com>
Date: Tue, 17 Dec 2024 17:10:54 +0800
From: Qi Zheng <zhengqi.arch@...edance.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Vishal Moola <vishal.moola@...il.com>, tglx@...utronix.de,
 david@...hat.com, jannh@...gle.com, hughd@...gle.com, yuzhao@...gle.com,
 willy@...radead.org, muchun.song@...ux.dev, vbabka@...nel.org,
 lorenzo.stoakes@...cle.com, akpm@...ux-foundation.org, rientjes@...gle.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 11/12] mm: pgtable: introduce generic __tlb_remove_table()



On 2024/12/17 17:02, Peter Zijlstra wrote:
> On Tue, Dec 17, 2024 at 11:42:02AM +0800, Qi Zheng wrote:
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index 497035a78849b..11829860ec05e 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -3064,6 +3064,14 @@ static inline void pagetable_dtor(struct ptdesc
>> *ptdesc)
>>          lruvec_stat_sub_folio(folio, NR_PAGETABLE);
>>   }
>>
>> +static inline void pagetable_dtor_free(void *table)
>> +{
>> +       struct ptdesc *ptdesc = page_ptdesc((struct page *)table);
>> +
>> +        pagetable_dtor(ptdesc);
>> +        pagetable_dtor(ptdesc);
>> +}
> 
> Right, that works, except you have whitespace issues and I think you'll
> find it'll work better if you don't call _dtor twice but instead replace
> that last one with _free() :-)

Ah, stupid thing I did, please ignore it. ;)

Will add this to v2.

Thanks!