An inactive file list is considered low when the its active
counter-part is bigger, regardless of whether it is a global zone LRU
list or a memcg zone LRU list. The only difference is in how the LRU
size is assessed.
get_lru_size() does the right thing for both global and memcg reclaim
situations.
Get rid of inactive_file_is_low_global() and
mem_cgroup_inactive_file_is_low() by using get_lru_size() and compare
the numbers in common code.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
---
include/linux/memcontrol.h | 7 -------
mm/memcontrol.c | 11 -----------
mm/vmscan.c | 19 ++++++-------------
3 files changed, 6 insertions(+), 31 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 0108a56..d21ddbf 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -116,7 +116,6 @@ void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *);
* For memory reclaim.
*/
int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec);
-int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec);
int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list);
void mem_cgroup_update_lru_size(struct lruvec *, enum lru_list, int);
@@ -321,12 +320,6 @@ mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
return 1;
}
-static inline int
-mem_cgroup_inactive_file_is_low(struct lruvec *lruvec)
-{
- return 1;
-}
-
static inline unsigned long
mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
{
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 7c8d449..6682553 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1445,17 +1445,6 @@ int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
return inactive * inactive_ratio < active;
}
-int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec)
-{
- unsigned long active;
- unsigned long inactive;
-
- inactive = mem_cgroup_get_lru_size(lruvec, LRU_INACTIVE_FILE);
- active = mem_cgroup_get_lru_size(lruvec, LRU_ACTIVE_FILE);
-
- return (active > inactive);
-}
-
#define mem_cgroup_from_res_counter(counter, member) \
container_of(counter, struct mem_cgroup, member)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 1b4c9e6..506388b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1581,16 +1581,6 @@ static inline int inactive_anon_is_low(struct lruvec *lruvec)
}
#endif
-static int inactive_file_is_low_global(struct zone *zone)
-{
- unsigned long active, inactive;
-
- active = zone_page_state(zone, NR_ACTIVE_FILE);
- inactive = zone_page_state(zone, NR_INACTIVE_FILE);
-
- return (active > inactive);
-}
-
/**
* inactive_file_is_low - check if file pages need to be deactivated
* @lruvec: LRU vector to check
@@ -1607,10 +1597,13 @@ static int inactive_file_is_low_global(struct zone *zone)
*/
static int inactive_file_is_low(struct lruvec *lruvec)
{
- if (!mem_cgroup_disabled())
- return mem_cgroup_inactive_file_is_low(lruvec);
+ unsigned long inactive;
+ unsigned long active;
+
+ inactive = get_lru_size(lruvec, LRU_INACTIVE_FILE);
+ active = get_lru_size(lruvec, LRU_ACTIVE_FILE);
- return inactive_file_is_low_global(lruvec_zone(lruvec));
+ return active > inactive;
}
static int inactive_list_is_low(struct lruvec *lruvec, enum lru_list lru)
--
1.7.11.7
--
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