[PATCH net-next v6 3/4] skbuff: Add a function to check if a page belongs to page_pool
From: Liang Chen <hidden>
Date: 2023-11-30 11:59:34
Also in:
linux-mm
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Wrap code for checking if a page is a page_pool page into a function for better readability and ease of reuse. Signed-off-by: Liang Chen <redacted> Reviewed-by: Yunsheng Lin <redacted> --- net/core/skbuff.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b157efea5dea..31e57c29c556 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c@@ -890,6 +890,11 @@ static void skb_clone_fraglist(struct sk_buff *skb) skb_get(list); } +static bool skb_frag_is_pp_page(struct page *page) +{ + return (page->pp_magic & ~0x3UL) == PP_SIGNATURE; +} + #if IS_ENABLED(CONFIG_PAGE_POOL) bool napi_pp_put_page(struct page *page, bool napi_safe) {
@@ -905,7 +910,7 @@ bool napi_pp_put_page(struct page *page, bool napi_safe) * and page_is_pfmemalloc() is checked in __page_pool_put_page() * to avoid recycling the pfmemalloc page. */ - if (unlikely((page->pp_magic & ~0x3UL) != PP_SIGNATURE)) + if (unlikely(!skb_frag_is_pp_page(page))) return false; pp = page->pp;
--
2.31.1