Re: [PATCH] ext4/xfs: add page refcount helper

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On Tue, Oct 06, 2020 at 07:40:05PM -0700, Dan Williams wrote:
> On Tue, Oct 6, 2020 at 4:09 PM Ralph Campbell <rcampbell@xxxxxxxxxx> 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@xxxxxxxxxx>
> > Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> > ---
> >
> > 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@xxxxxxxxxx
> >
> > 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.

Acked-by: Theodore Ts'o <tytso@xxxxxxx> # for fs/ext4/inode.c




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