diff options
| author | Liang Chen <liangchen.linux@gmail.com> | 2023-12-15 11:30:09 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-17 10:56:33 +0000 |
| commit | aaf153aecef1d1831d0d6d371d5c11cf02f0337e (patch) | |
| tree | a915186aa9c55df5259cbb82435540f75eb9d6e9 /net/core/page_pool.c | |
| parent | 66fe896351d0505f529eefe4715f6c669f49cbd9 (diff) | |
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 <liangchen.linux@gmail.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Mina Almasry <almarsymina@google.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/page_pool.c')
| -rw-r--r-- | net/core/page_pool.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 */ |