[PATCH net-next -v5 2/4] page_pool: change BIAS_MAX to support incrementing
From: Yunsheng Lin <hidden>
Date: 2021-10-09 09:39:20
Also in:
linux-mm, lkml
Subsystem:
networking [general], page pool, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jesper Dangaard Brouer, Ilias Apalodimas, Linus Torvalds
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 <redacted> --- 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)
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2.33.0