Re: [PATCH 04/17] mm: Convert page_maybe_dma_pinned() to use a folio

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To: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: Re: [PATCH 04/17] mm: Convert page_maybe_dma_pinned() to use a folio
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 4 Jan 2022 00:03:31 -0800
Cc: linux-mm@xxxxxxxxx, John Hubbard <jhubbard@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <20220102215729.2943705-5-willy@infradead.org>
References: <20220102215729.2943705-1-willy@infradead.org> <20220102215729.2943705-5-willy@infradead.org>

On Sun, Jan 02, 2022 at 09:57:16PM +0000, Matthew Wilcox (Oracle) wrote:
> Replaces three calls to compound_head() with one.  This removes the last
> user of compound_pincount(), so remove that helper too.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

References:
- [PATCH 00/17] Convert GUP to folios
  - From: Matthew Wilcox (Oracle)
- [PATCH 04/17] mm: Convert page_maybe_dma_pinned() to use a folio
  - From: Matthew Wilcox (Oracle)

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