linux-kernel - Re: [PATCH v2 05/46] mm: Add arch_make_folio

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Message-ID: <YNSraZoSxNTCZf5b@casper.infradead.org>
Date:   Thu, 24 Jun 2021 16:57:29 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/46] mm: Add arch_make_folio_accessible()

On Wed, Jun 23, 2021 at 10:00:37AM +0200, Christoph Hellwig wrote:
> On Tue, Jun 22, 2021 at 01:15:10PM +0100, Matthew Wilcox (Oracle) wrote:
> > As a default implementation, call arch_make_page_accessible n times.
> > If an architecture can do better, it can override this.
> > 
> > Also move the default implementation of arch_make_page_accessible()
> > from gfp.h to mm.h.
> 
> Can we wait with introducing arch hooks until we have an actual user
> lined up?

This one gets used in __folio_end_writeback() which is patch 24 in this
series.