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

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Message-ID: <aBou5i71eiLSvzUU@casper.infradead.org>
Date: Tue, 6 May 2025 16:46:46 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Dev Jain <dev.jain@....com>
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 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?