From: Yunsheng Lin <linyunsheng@huawei.com>
To: <davem@davemloft.net>, <kuba@kernel.org>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linuxarm@openeuler.org>, <hawk@kernel.org>,
<ilias.apalodimas@linaro.org>, <jonathan.lemon@gmail.com>,
<alobakin@pm.me>, <willemb@google.com>, <cong.wang@bytedance.com>,
<pabeni@redhat.com>, <haokexin@gmail.com>, <nogikh@google.com>,
<elver@google.com>, <memxor@gmail.com>, <edumazet@google.com>,
<alexander.duyck@gmail.com>, <dsahern@gmail.com>
Subject: [PATCH net-next 4/7] page_pool: change BIAS_MAX to support incrementing
Date: Wed, 22 Sep 2021 17:41:28 +0800 [thread overview]
Message-ID: <20210922094131.15625-5-linyunsheng@huawei.com> (raw)
In-Reply-To: <20210922094131.15625-1-linyunsheng@huawei.com>
As the page->pp_frag_count need incrementing for pp page
tracking support, so change BIAS_MAX to (LONG_MAX / 2) to
avoid overflowing.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
---
net/core/page_pool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 357fb53343a0..e9516477f9d2 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -24,7 +24,7 @@
#define DEFER_TIME (msecs_to_jiffies(1000))
#define DEFER_WARN_INTERVAL (60 * HZ)
-#define BIAS_MAX LONG_MAX
+#define BIAS_MAX (LONG_MAX / 2)
static int page_pool_init(struct page_pool *pool,
const struct page_pool_params *params)
--
2.33.0
next prev parent reply other threads:[~2021-09-22 9:43 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 9:41 [PATCH net-next 0/7] some optimization for page pool Yunsheng Lin
2021-09-22 9:41 ` [PATCH net-next 1/7] page_pool: disable dma mapping support for 32-bit arch with 64-bit DMA Yunsheng Lin
2021-09-23 9:10 ` Ilias Apalodimas
2021-09-23 9:33 ` Jesper Dangaard Brouer
2021-09-23 10:02 ` Ilias Apalodimas
2021-09-23 11:13 ` Yunsheng Lin
2021-09-23 13:07 ` Ilias Apalodimas
2021-09-24 7:04 ` Yunsheng Lin
2021-09-24 7:25 ` Ilias Apalodimas
2021-09-24 8:01 ` Yunsheng Lin
2021-09-22 9:41 ` [PATCH net-next 2/7] page_pool: support non-split page with PP_FLAG_PAGE_FRAG Yunsheng Lin
2021-09-23 12:08 ` Jesper Dangaard Brouer
2021-09-24 7:23 ` Yunsheng Lin
2021-09-30 7:28 ` [Linuxarm] " Yunsheng Lin
2021-09-22 9:41 ` [PATCH net-next 3/7] pool_pool: avoid calling compound_head() for skb frag page Yunsheng Lin
2021-09-23 8:33 ` Ilias Apalodimas
2021-09-23 11:24 ` Yunsheng Lin
2021-09-23 11:47 ` Ilias Apalodimas
2021-09-24 7:33 ` Yunsheng Lin
2021-09-24 7:44 ` Ilias Apalodimas
2021-09-22 9:41 ` Yunsheng Lin [this message]
2021-09-22 9:41 ` [PATCH net-next 5/7] skbuff: keep track of pp page when __skb_frag_ref() is called Yunsheng Lin
2021-09-22 9:41 ` [PATCH net-next 6/7] skbuff: only use pp_magic identifier for a skb' head page Yunsheng Lin
2021-09-22 9:41 ` [PATCH net-next 7/7] skbuff: remove unused skb->pp_recycle Yunsheng Lin
2021-09-23 7:07 ` [PATCH net-next 0/7] some optimization for page pool Ilias Apalodimas
2021-09-23 11:12 ` Yunsheng Lin
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