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From:   Yunsheng Lin <linyunsheng@huawei.com>
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Subject: [PATCH net-next -v5 2/4] page_pool: change BIAS_MAX to support incrementing
Date:   Sat, 9 Oct 2021 17:37:22 +0800
Message-ID: <20211009093724.10539-3-linyunsheng@huawei.com>
In-Reply-To: <20211009093724.10539-1-linyunsheng@huawei.com>
References: <20211009093724.10539-1-linyunsheng@huawei.com>
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Precedence: bulk

As the page->pp_frag_count need incrementing for pp page
frag 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 9b60e4301a44..2c643b72ce16 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