Re: [PATCH 1/4] mm: introduce 'encoded' page pointers with embedded extra bits
From: Alexander Gordeev
Date: Wed Nov 09 2022 - 01:38:16 EST
On Tue, Nov 08, 2022 at 11:41:36AM -0800, Linus Torvalds wrote:
Hi Linus,
[...]
> +struct encoded_page;
> +#define ENCODE_PAGE_BITS 3ul
> +static inline struct encoded_page *encode_page(struct page *page, unsigned long flags)
> +{
Any reaction in case ((flags & ~ENCODE_PAGE_BITS) != 0)?
> + return (struct encoded_page *)(flags | (unsigned long)page);
> +}
Thanks!