Re: [RFC PATCH 1/5] mm/page_ext: resurrect struct page extending code for debugging

[Dave Hansen]

On 11/12/2014 12:27 AM, Joonsoo Kim wrote:
> @@ -1092,6 +1096,14 @@ struct mem_section {
>  
>  	/* See declaration of similar field in struct zone */
>  	unsigned long *pageblock_flags;
> +#ifdef CONFIG_PAGE_EXTENSION
> +	/*
> +	 * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use
> +	 * section. (see page_ext.h about this.)
> +	 */
> +	struct page_ext *page_ext;
> +	unsigned long pad;
> +#endif

Will the distributions be amenable to enabling this?  If so, I'm all for
it if it gets us things like page_owner at runtime.

If not, this becomes of much more questionable utility.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/