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| author | Hugh Dickins <hughd@google.com> | 2012-05-29 15:06:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:25 -0700 |
| commit | 89abfab133ef1f5902abafb744df72793213ac19 (patch) | |
| tree | 29df29e2a34a0af3649417d2e430480c7e7e5fa1 /mm/swap.c | |
| parent | c3c787e8c38557ccf44c670d73aebe630a2b1479 (diff) | |
| download | linux-89abfab133ef1f5902abafb744df72793213ac19.tar.gz linux-89abfab133ef1f5902abafb744df72793213ac19.tar.bz2 linux-89abfab133ef1f5902abafb744df72793213ac19.zip | |
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.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/mm/swap.c b/mm/swap.c index 6fdd72ec15b0..0503ad705e7c 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) |