linux-kernel - Re: [PATCH V3 2/5] mm/khugepaged: count small VMAs towards scan limit

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Message-ID: <195ae185-2b88-4841-90f1-e68df6acbc90@amd.com>
Date: Sat, 24 Jan 2026 01:37:59 +0530
From: "Garg, Shivank" <shivankg@....com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Zi Yan <ziy@...dia.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>,
 "Liam R . Howlett" <Liam.Howlett@...cle.com>, Nico Pache
 <npache@...hat.com>, David Hildenbrand <david@...nel.org>,
 Ryan Roberts <ryan.roberts@....com>, Barry Song <baohua@...nel.org>,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 Wei Yang <richard.weiyang@...il.com>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Subject: Re: [PATCH V3 2/5] mm/khugepaged: count small VMAs towards scan limit

On 1/23/2026 9:07 PM, Andrew Morton wrote:
> On Fri, 23 Jan 2026 16:12:07 +0530 "Garg, Shivank" <shivankg@....com> wrote:
> 
>>>> I was worrying about a case that doesn't actually happen.
>>>>
>>> You're right, thp_vma_allowable_order() is taking care of this, making 
>>> hend <= hstart check redundant.
>>>
>>> Thank you for catching this.
>>>
>>> I'll drop this change and send revision keeping only the unsigned int type 
>>> change for 'progress'.
>>>
>>
>> Hi Andrew,
>>
>> Please drop this patch.
> 
> thud.
> 
>> As Dev and Lance noted that the hend <= hstart handling check is redundant.
>>
>> The 'progress' variable to unsigned int is not critical either.
> 
> OK.
> 
> Were you thinking of adopting Dev's suggestion? 
> https://lkml.kernel.org/r/6486c6dd-2702-4a4d-9662-09639532ce6f@arm.com.
> 
> If so, let's defer until the next cycle, please.  Now is the time to be
> focusing on stabilization, test, finishing up review, etc.
> 

Thanks Andrew, understood. I'll defer Dev's suggestion to next cycle.
Thanks for the guidance. :)

Best Regards,
Shivank