| Message ID | 20231211035243.15774-3-liangchen.linux@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | skbuff: Optimize SKB coalescing for page pool | expand |
Hi Alex, For page_pool BIAS stuff I would really appreciate your review please. -Jesper On 11/12/2023 04.52, Liang Chen wrote: > Referring to patch [1], in order to support multiple users referencing the > same fragment and prevent overflow from pp_ref_count growing, the initial > value of pp_ref_count is halved, leaving room for pp_ref_count to increment > before the page is drained. > > [1] > https://lore.kernel.org/all/20211009093724.10539-3-linyunsheng@huawei.com/ > > Signed-off-by: Liang Chen <liangchen.linux@gmail.com> > Reviewed-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 106220b1f89c..436f7ffea7b4 100644 > --- a/net/core/page_pool.c > +++ b/net/core/page_pool.c > @@ -26,7 +26,7 @@ > #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 */
diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 106220b1f89c..436f7ffea7b4 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -26,7 +26,7 @@ #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 */