linux-kernel - Re: [PATCH v13 04/10] mm: split a folio in minimum folio order chunks

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Message-ID: <ZtJKvuF8086rj1dq@casper.infradead.org>
Date: Fri, 30 Aug 2024 23:42:06 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Pankaj Raghav <kernel@...kajraghav.com>
Cc: Luis Chamberlain <mcgrof@...nel.org>, Zi Yan <ziy@...dia.com>,
	Sven Schnelle <svens@...ux.ibm.com>, brauner@...nel.org,
	akpm@...ux-foundation.org, chandan.babu@...cle.com,
	linux-fsdevel@...r.kernel.org, djwong@...nel.org, hare@...e.de,
	gost.dev@...sung.com, linux-xfs@...r.kernel.org, hch@....de,
	david@...morbit.com, yang@...amperecomputing.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	john.g.garry@...cle.com, cl@...amperecomputing.com,
	p.raghav@...sung.com, ryan.roberts@....com,
	David Howells <dhowells@...hat.com>, linux-s390@...r.kernel.org
Subject: Re: [PATCH v13 04/10] mm: split a folio in minimum folio order chunks

On Fri, Aug 30, 2024 at 04:59:57PM +0200, Pankaj Raghav wrote:
> It feels a bit weird to pass both folio and the page in `split_page_folio_to_list()`.

We do that in the rmap code.

But this is not a performance path.  We should keep this as simple as
possible.