From aaf153aecef1d1831d0d6d371d5c11cf02f0337e Mon Sep 17 00:00:00 2001 From: Liang Chen Date: Fri, 15 Dec 2023 11:30:09 +0800 Subject: page_pool: halve BIAS_MAX for multiple user references of a fragment Up to now, we were only subtracting from the number of used page fragments to figure out when a page could be freed or recycled. A following patch introduces support for multiple users referencing the same fragment. So reduce the initial page fragments value to half to avoid overflowing. Signed-off-by: Liang Chen Reviewed-by: Yunsheng Lin Reviewed-by: Mina Almasry Reviewed-by: Ilias Apalodimas Signed-off-by: David S. Miller --- net/core/page_pool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/core/page_pool.c b/net/core/page_pool.c index dd5a72533f2b..4933762e5a6b 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -28,7 +28,7 @@ #define DEFER_TIME (msecs_to_jiffies(1000)) #define DEFER_WARN_INTERVAL (60 * HZ) -#define BIAS_MAX LONG_MAX +#define BIAS_MAX (LONG_MAX >> 1) #ifdef CONFIG_PAGE_POOL_STATS /* alloc_stat_inc is intended to be used in softirq context */ -- cgit