Re: [PATCH net-next 1/9] netmem: introduce struct netmem_desc mirroring struct page

[Jakub Kicinski]

On Mon,  9 Jun 2025 13:32:17 +0900 Byungchul Park wrote:
> To simplify struct page, the page pool members of struct page should be
> moved to other, allowing these members to be removed from struct page.
> 
> Introduce a network memory descriptor to store the members, struct
> netmem_desc, and make it union'ed with the existing fields in struct
> net_iov, allowing to organize the fields of struct net_iov.

What's the intended relation between the types?

netmem_ref exists to clearly indicate that memory may not be readable.
Majority of memory we expect to allocate from page pool must be
kernel-readable. What's the plan for reading the "single pointer"
memory within the kernel?

I think you're approaching this problem from the easiest and least
relevant direction. Are you coordinating with David Howells?