From d1663a907bd348f912b7f7088e83ca1b6fd3309f Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Mon, 1 Jun 2020 21:49:49 -0700 Subject: mm/memcg: move cgroup high memory limit setting into struct page_counter High memory limit is currently recorded directly in struct mem_cgroup. We are about to add a high limit for swap, move the field to struct page_counter and add some helpers. Signed-off-by: Jakub Kicinski Signed-off-by: Andrew Morton Reviewed-by: Shakeel Butt Acked-by: Johannes Weiner Cc: Chris Down Cc: Hugh Dickins Cc: Michal Hocko Cc: Tejun Heo Link: http://lkml.kernel.org/r/20200527195846.102707-4-kuba@kernel.org Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 3 --- include/linux/page_counter.h | 8 ++++++++ 2 files changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 977edd3b7bd8..95a09a7ec412 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -215,9 +215,6 @@ struct mem_cgroup { struct page_counter kmem; struct page_counter tcpmem; - /* Upper bound of normal memory consumption range */ - unsigned long high; - /* Range enforcement for interrupt charges */ struct work_struct high_work; diff --git a/include/linux/page_counter.h b/include/linux/page_counter.h index bab7e57f659b..85bd413e784e 100644 --- a/include/linux/page_counter.h +++ b/include/linux/page_counter.h @@ -10,6 +10,7 @@ struct page_counter { atomic_long_t usage; unsigned long min; unsigned long low; + unsigned long high; unsigned long max; struct page_counter *parent; @@ -55,6 +56,13 @@ bool page_counter_try_charge(struct page_counter *counter, void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages); void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages); void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages); + +static inline void page_counter_set_high(struct page_counter *counter, + unsigned long nr_pages) +{ + WRITE_ONCE(counter->high, nr_pages); +} + int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages); int page_counter_memparse(const char *buf, const char *max, unsigned long *nr_pages); -- cgit v1.2.3