On 28.07.25 07:27, Byungchul Park wrote:
Changes from v1: 1. Rebase on linux-next. 2. Initialize net_iov->pp = NULL when allocating net_iov in net_devmem_bind_dmabuf() and io_zcrx_create_area(). 3. Use ->pp for net_iov to identify if it's pp rather than always consider net_iov as pp. 4. Add Suggested-by: David Hildenbrand <david@xxxxxxxxxx>. ---8<--- From 08b65324282bbe683a2479faef8eb24df249fd18 Mon Sep 17 00:00:00 2001 From: Byungchul Park <byungchul@xxxxxx> Date: Mon, 28 Jul 2025 14:07:17 +0900 Subject: [PATCH v2] mm, page_pool: introduce a new page type for page pool in page type ->pp_magic field in struct page is current used to identify if a page belongs to a page pool. However, ->pp_magic will be removed and page type bit in struct page e.i. PGTY_netpp can be used for that purpose. Introduce and use the page type APIs e.g. PageNetpp(), __SetPageNetpp(), and __ClearPageNetpp() instead, and remove the existing APIs accessing ->pp_magic e.g. page_pool_page_is_pp(), netmem_or_pp_magic(), and netmem_clear_pp_magic(). For net_iov, use ->pp to identify if it's pp, with making sure that ->pp is NULL for non-pp net_iov. This work was inspired by the following link: [1] https://lore.kernel.org/all/582f41c0-2742-4400-9c81-0d46bf4e8314@xxxxxxxxx/ While at it, move the sanity check for page pool to on free. Suggested-by: David Hildenbrand <david@xxxxxxxxxx> Signed-off-by: Byungchul Park <byungchul@xxxxxx> ---
Nothing jumped at me, so Acked-by: David Hildenbrand <david@xxxxxxxxxx> for the MM bits. -- Cheers, David / dhildenb
