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skbuff: Add a function to check if a page belongs to page_pool

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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@gmail.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Mina Almasry <almarsymina@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Liang Chen 2023-12-15 11:30:10 +08:00 committed by David S. Miller
parent aaf153aece
commit 8cfa2dee32
1 changed files with 6 additions and 1 deletions
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7
net/core/skbuff.c
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@ -890,6 +890,11 @@ static void skb_clone_fraglist(struct sk_buff *skb)
skb_get(list);
}
static bool 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(!is_pp_page(page)))
return false;
pp = page->pp;