From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	patches@lists.linux.dev,
	Byungchul Park <byungchul@sk.com>,
	Mina Almasry <almasrymina@google.com>,
	=?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>,
	Pavel Begunkov <asml.silence@gmail.com>,
	Ilias Apalodimas <ilias.apalodimas@linaro.org>,
	Jakub Kicinski <kuba@kernel.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.12 1124/1376] page_pool: rename __page_pool_release_page_dma() to __page_pool_release_netmem_dma()
Date: Sat, 12 Sep 2026 08:59:10 +0200
Message-ID: <20260912065632.615809206@linuxfoundation.org>
In-Reply-To: <20260912065607.535295758@linuxfoundation.org>
References: <20260912065607.535295758@linuxfoundation.org>
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6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Byungchul Park <byungchul@sk.com>

[ Upstream commit 4ad125ae380bf0bd55d6e1efb492d2ad4f867030 ]

Now that __page_pool_release_page_dma() is for releasing netmem, not
struct page, rename it to __page_pool_release_netmem_dma() to reflect
what it does.

Signed-off-by: Byungchul Park <byungchul@sk.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Link: https://patch.msgid.link/20250702053256.4594-3-byungchul@sk.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 24ef02f934ee ("net: page_pool: fix UAF in __page_pool_release_netmem_dma on xa_cmpxchg race")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/page_pool.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 97ad4cc87be81..642ebe4924edc 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -726,8 +726,8 @@ void page_pool_clear_pp_info(netmem_ref netmem)
 	netmem_set_pp(netmem, NULL);
 }
 
-static __always_inline void __page_pool_release_page_dma(struct page_pool *pool,
-							 netmem_ref netmem)
+static __always_inline void __page_pool_release_netmem_dma(struct page_pool *pool,
+							   netmem_ref netmem)
 {
 	dma_addr_t dma;
 
@@ -763,7 +763,7 @@ void page_pool_return_page(struct page_pool *pool, netmem_ref netmem)
 	if (static_branch_unlikely(&page_pool_mem_providers) && pool->mp_ops)
 		put = pool->mp_ops->release_netmem(pool, netmem);
 	else
-		__page_pool_release_page_dma(pool, netmem);
+		__page_pool_release_netmem_dma(pool, netmem);
 
 	/* This may be the last page returned, releasing the pool, so
 	 * it is not safe to reference pool afterwards.
@@ -1138,7 +1138,7 @@ static void page_pool_scrub(struct page_pool *pool)
 		}
 
 		xa_for_each(&pool->dma_mapped, id, ptr)
-			__page_pool_release_page_dma(pool, page_to_netmem(ptr));
+			__page_pool_release_netmem_dma(pool, page_to_netmem((struct page *)ptr));
 	}
 
 	/* No more consumers should exist, but producers could still
-- 
2.53.0