linux-kernel - Re: [PATCH] mm: Move nth_page from folio_page into folio

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Message-ID: <Z9OD5MsHZnzG4Smt@gondor.apana.org.au>
Date: Fri, 14 Mar 2025 09:18:28 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Matthew Wilcox <willy@...radead.org>
Cc: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@....de>, Zi Yan <ziy@...dia.com>,
	Eric Biggers <ebiggers@...nel.org>
Subject: Re: [PATCH] mm: Move nth_page from folio_page into folio_next

On Thu, Mar 13, 2025 at 12:25:50PM +0000, Matthew Wilcox wrote:
>
> That isn't true.  HugeTLB can construct a folio which crosses a
> contiguity boundary.

Thanks.  So thea means we do need to use nth_page when iterating
through a folio or a scatterlist generated from a folio.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt