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authorHugh Dickins <hughd@google.com>2012-05-29 15:06:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:25 -0700
commit89abfab133ef1f5902abafb744df72793213ac19 (patch)
tree29df29e2a34a0af3649417d2e430480c7e7e5fa1 /mm/swap.c
parentc3c787e8c38557ccf44c670d73aebe630a2b1479 (diff)
downloadop-kernel-dev-89abfab133ef1f5902abafb744df72793213ac19.zip
op-kernel-dev-89abfab133ef1f5902abafb744df72793213ac19.tar.gz
mm/memcg: move reclaim_stat into lruvec
With mem_cgroup_disabled() now explicit, it becomes clear that the zone_reclaim_stat structure actually belongs in lruvec, per-zone when memcg is disabled but per-memcg per-zone when it's enabled. We can delete mem_cgroup_get_reclaim_stat(), and change update_page_reclaim_stat() to update just the one set of stats, the one which get_scan_count() will actually use. Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: Glauber Costa <glommer@parallels.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 6fdd72e..0503ad7 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -312,21 +312,15 @@ void rotate_reclaimable_page(struct page *page)
static void update_page_reclaim_stat(struct zone *zone, struct page *page,
int file, int rotated)
{
- struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
- struct zone_reclaim_stat *memcg_reclaim_stat;
+ struct zone_reclaim_stat *reclaim_stat;
- memcg_reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page);
+ reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page);
+ if (!reclaim_stat)
+ reclaim_stat = &zone->lruvec.reclaim_stat;
reclaim_stat->recent_scanned[file]++;
if (rotated)
reclaim_stat->recent_rotated[file]++;
-
- if (!memcg_reclaim_stat)
- return;
-
- memcg_reclaim_stat->recent_scanned[file]++;
- if (rotated)
- memcg_reclaim_stat->recent_rotated[file]++;
}
static void __activate_page(struct page *page, void *arg)
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