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memcg: move memcg reclaimable page into tail of inactive list

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The rotate_reclaimable_page function moves just written out pages, which
the VM wanted to reclaim, to the end of the inactive list.  That way the
VM will find those pages first next time it needs to free memory.

This patch applies the rule in memcg.  It can help to prevent unnecessary
working page eviction of memcg.

Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Minchan Kim
2011-03-22 16:32:53 -07:00
committed by Linus Torvalds
parent 315601809d
commit 3f58a82943
3 changed files with 34 additions and 1 deletions
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3
mm/swap.c
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@@ -200,8 +200,9 @@ static void pagevec_move_tail(struct pagevec *pvec)
spin_lock(&zone->lru_lock);
}
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
int lru = page_lru_base_type(page);
enum lru_list lru = page_lru_base_type(page);
list_move_tail(&page->lru, &zone->lru[lru].list);
mem_cgroup_rotate_reclaimable_page(page);
pgmoved++;
}
}