From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com
Cc: mka@chromium.org, evgreen@chromium.org,
bjorn.andersson@linaro.org, quic_cpratapa@quicinc.com,
quic_avuyyuru@quicinc.com, quic_jponduru@quicinc.com,
quic_subashab@quicinc.com, elder@kernel.org,
netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net 2/2] net: ipa: fix page free in ipa_endpoint_replenish_one()
Date: Sat, 21 May 2022 19:59:59 -0500 [thread overview]
Message-ID: <20220522005959.1175181-3-elder@linaro.org> (raw)
In-Reply-To: <20220522005959.1175181-1-elder@linaro.org>
Currently the (possibly compound) pages used for receive buffers are
freed using __free_pages(). But according to this comment above the
definition of that function, that's wrong:
If you want to use the page's reference count to decide
when to free the allocation, you should allocate a compound
page, and use put_page() instead of __free_pages().
Convert the call to __free_pages() in ipa_endpoint_replenish_one()
to use put_page() instead.
Fixes: 6a606b90153b8 ("net: ipa: allocate transaction in replenish loop")
Signed-off-by: Alex Elder <elder@linaro.org>
---
drivers/net/ipa/ipa_endpoint.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 675b7135644b8..dac4845cf596c 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1062,7 +1062,7 @@ static int ipa_endpoint_replenish_one(struct ipa_endpoint *endpoint,
ret = gsi_trans_page_add(trans, page, len, offset);
if (ret)
- __free_pages(page, get_order(buffer_size));
+ put_page(page);
else
trans->data = page; /* transaction owns page now */
--
2.32.0
next prev parent reply other threads:[~2022-05-22 1:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-22 0:59 [PATCH net 0/2] net: ipa: fix page free in two spots Alex Elder
2022-05-22 0:59 ` [PATCH net 1/2] net: ipa: fix page free in ipa_endpoint_trans_release() Alex Elder
2022-05-22 0:59 ` Alex Elder [this message]
2022-05-22 12:46 ` [PATCH net 0/2] net: ipa: fix page free in two spots Alex Elder
2022-05-22 20:00 ` David Miller
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