[PATCH net-next -v5 2/4] page_pool: change BIAS_MAX to support incrementing

Yunsheng Lin
2021-10-09T09:39:17Z

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