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Message-Id: <20231130115611.6632-4-liangchen.linux@gmail.com>
Date: Thu, 30 Nov 2023 19:56:10 +0800
From: Liang Chen <liangchen.linux@...il.com>
To: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
hawk@...nel.org,
ilias.apalodimas@...aro.org,
linyunsheng@...wei.com
Cc: netdev@...r.kernel.org,
linux-mm@...ck.org,
jasowang@...hat.com,
liangchen.linux@...il.com
Subject: [PATCH net-next v6 3/4] skbuff: Add a function to check if a page belongs to page_pool
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 <liangchen.linux@...il.com>
Reviewed-by: Yunsheng Lin <linyunsheng@...wei.com>
---
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
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