Re: [PATCH v3] mm: vmscan: rework lru_shrink and write_folio tracepoints

[Matthew Wilcox]

On Mon, Sep 14, 2026 at 07:24:37AM +0000, qiwu.chen(陈启武) wrote:
>  
> -     TP_printk("page=%p pfn=0x%lx flags=%s",
> -             pfn_to_page(__entry->pfn),
> -             __entry->pfn,
> -             show_reclaim_flags(__entry->reclaim_flags))
> +     TP_printk("folio=%p lru=%s",
> +             __entry->folio,
> +             __print_symbolic(__entry->lru, LRU_NAMES))
>  );

Why is it useful to print out the folio pointer?  Printing out the PFN
made more sense to me.