On Mon, Jun 07, 2021 at 03:42:19PM -0500, Alex Sierra wrote:
> +++ b/include/linux/dax.h
> @@ -243,6 +243,16 @@ static inline bool dax_mapping(struct address_space
> *mapping)
> return mapping->host && IS_DAX(mapping->host);
> }
>
> +static inline bool dax_layout_is_idle_page(struct page *page)
> +{
> + return page_ref_count(page) == 1;
> +}
We already have something called an idle page, and that's quite a
different thing from this. How about dax_page_unused() (it's a use
count, so once it's got down to its minimum value, it's unused)?
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