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| author | Johannes Weiner <hannes@cmpxchg.org> | 2013-02-22 16:35:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:20 -0800 |
| commit | e3790144c9091631a18564aa64db8a971da02c41 (patch) | |
| tree | 5bdfc979f120d647ed617893ab9e300c2b4913c5 /mm/vmscan.c | |
| parent | 860f2759d94bf9db637d85d75d074de88af54688 (diff) | |
| download | linux-e3790144c9091631a18564aa64db8a971da02c41.tar.gz linux-e3790144c9091631a18564aa64db8a971da02c41.tar.bz2 linux-e3790144c9091631a18564aa64db8a971da02c41.zip | |
mm: refactor inactive_file_is_low() to use get_lru_size()
An inactive file list is considered low when its active counterpart 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@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index b7d8015a6d54..396ecee281d0 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1579,16 +1579,6 @@ 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 @@ -1605,10 +1595,13 @@ 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) |