linux-kernel - [PATCH net-next v9 4/8] netmem: use netmem_desc instead of page to access ->pp in __netmem_get

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Message-Id: <20250710082807.27402-5-byungchul@sk.com>
Date: Thu, 10 Jul 2025 17:28:03 +0900
From: Byungchul Park <byungchul@...com>
To: willy@...radead.org,
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Subject: [PATCH net-next v9 4/8] netmem: use netmem_desc instead of page to access ->pp in __netmem_get_pp()

To eliminate the use of the page pool fields in struct page, the page
pool code should use netmem descriptor and APIs instead.

However, __netmem_get_pp() still accesses ->pp via struct page.  So
change it to use struct netmem_desc instead, since ->pp no longer will
be available in struct page.

Signed-off-by: Byungchul Park <byungchul@...com>
---
 include/net/netmem.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/netmem.h b/include/net/netmem.h
index 11e9de45efcb..283b4a997fbc 100644
--- a/include/net/netmem.h
+++ b/include/net/netmem.h
@@ -306,7 +306,7 @@ static inline struct net_iov *__netmem_clear_lsb(netmem_ref netmem)
  */
 static inline struct page_pool *__netmem_get_pp(netmem_ref netmem)
 {
-	return __netmem_to_page(netmem)->pp;
+	return __netmem_to_nmdesc(netmem)->pp;
 }
 
 static inline struct page_pool *netmem_get_pp(netmem_ref netmem)
-- 
2.17.1