linux-kernel - Re: [PATCH 2/3] mm: Add generic helper to hint a large folio

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Message-ID: <34ed0b92-ee75-4d2a-8aa7-6ede9287c740@arm.com>
Date: Wed, 7 May 2025 09:13:55 +0530
From: Dev Jain <dev.jain@....com>
To: Matthew Wilcox <willy@...radead.org>
Cc: akpm@...ux-foundation.org, Liam.Howlett@...cle.com,
 lorenzo.stoakes@...cle.com, vbabka@...e.cz, jannh@...gle.com,
 pfalcato@...e.de, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 david@...hat.com, peterx@...hat.com, ryan.roberts@....com, mingo@...nel.org,
 libang.li@...group.com, maobibo@...ngson.cn, zhengqi.arch@...edance.com,
 baohua@...nel.org, anshuman.khandual@....com, ioworker0@...il.com,
 yang@...amperecomputing.com
Subject: Re: [PATCH 2/3] mm: Add generic helper to hint a large folio



On 06/05/25 9:16 pm, Matthew Wilcox wrote:
> On Tue, May 06, 2025 at 10:30:55AM +0530, Dev Jain wrote:
>> +	return unlikely(pte_pfn(next_pte) - pte_pfn(pte) == PAGE_SIZE);
> 
> umm ... PFN is in units of PAGE_SIZE.  Did you mean == 1?

My bad, thanks for pointing out.