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SubjectRe: [PATCH] ext4/xfs: add page refcount helper
On Tue, Oct 6, 2020 at 4:09 PM Ralph Campbell <rcampbell@nvidia.com> wrote:
>
> 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.
>
> Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> ---
>
> I'm resending this as a separate patch since I think it is ready to
> merge. Originally, this was part of an RFC and is unchanged from v3:
> https://lore.kernel.org/linux-mm/20201001181715.17416-1-rcampbell@nvidia.com
>
> It applies cleanly to linux-5.9.0-rc7-mm1 but doesn't really
> depend on anything, just simple merge conflicts when applied to
> other trees.
> I'll let the various maintainers decide which tree and when to merge.
> It isn't urgent since it is a clean up patch.

Thanks Ralph, it looks good to me. Jan, or Ted care to ack? I don't
have much else pending for dax at the moment as Andrew is carrying my
dax updates for this cycle. Andrew please take this into -mm if you
get a chance. Otherwise I'll cycle back to it when some other dax
updates arrive in my queue.

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