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Date:   Sun, 15 Aug 2021 11:01:00 +0200
From:   Christoph Hellwig <hch@....de>
To:     Alex Sierra <alex.sierra@....com>
Cc:     akpm@...ux-foundation.org, Felix.Kuehling@....com,
        linux-mm@...ck.org, rcampbell@...dia.com,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        hch@....de, jgg@...dia.com, jglisse@...hat.com
Subject: Re: [PATCH v6 01/13] ext4/xfs: add page refcount helper

On Fri, Aug 13, 2021 at 01:31:38AM -0500, Alex Sierra wrote:
> From: Ralph Campbell <rcampbell@...dia.com>
> 
> There are several places where ZONE_DEVICE struct pages assume a reference
> count == 1 means the page is idle and free. Instead of open coding this,
> add a helper function to hide this detail.
> 
> v3:
> [AS]: rename dax_layout_is_idle_page func to dax_page_unused
> 
> v4:
> [AS]: This ref count functionality was missing on fuse/dax.c.

These per-patch changelog goes under the "---", otherwise they totally
mess up the logs when commited to git.  Same for the other patches in
this series.

But the changes itself looks good:

Reviewed-by: Christoph Hellwig <hch@....de>

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