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mm: collect LRU list heads into struct lruvec

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Having a unified structure with a LRU list set for both global zones and
per-memcg zones allows to keep that code simple which deals with LRU
lists and does not care about the container itself.

Once the per-memcg LRU lists directly link struct pages, the isolation
function and all other list manipulations are shared between the memcg
case and the global LRU case.

Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Ying Han <yinghan@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner
2012-01-12 17:18:10 -08:00
committed by Linus Torvalds
parent b95a2f2d48
commit 6290df5458
6 changed files with 25 additions and 27 deletions
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10
mm/vmscan.c
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@@ -1250,8 +1250,8 @@ static unsigned long isolate_pages_global(unsigned long nr,
lru += LRU_ACTIVE;
if (file)
lru += LRU_FILE;
return isolate_lru_pages(nr, &z->lru[lru].list, dst, scanned, order,
mode, file);
return isolate_lru_pages(nr, &z->lruvec.lists[lru], dst,
scanned, order, mode, file);
}
/*
@@ -1630,7 +1630,7 @@ static void move_active_pages_to_lru(struct zone *zone,
VM_BUG_ON(PageLRU(page));
SetPageLRU(page);
list_move(&page->lru, &zone->lru[lru].list);
list_move(&page->lru, &zone->lruvec.lists[lru]);
mem_cgroup_add_lru_list(page, lru);
pgmoved += hpage_nr_pages(page);
@@ -3448,7 +3448,7 @@ retry:
enum lru_list l = page_lru_base_type(page);
__dec_zone_state(zone, NR_UNEVICTABLE);
list_move(&page->lru, &zone->lru[l].list);
list_move(&page->lru, &zone->lruvec.lists[l]);
mem_cgroup_move_lists(page, LRU_UNEVICTABLE, l);
__inc_zone_state(zone, NR_INACTIVE_ANON + l);
__count_vm_event(UNEVICTABLE_PGRESCUED);
@@ -3457,7 +3457,7 @@ retry:
* rotate unevictable list
*/
SetPageUnevictable(page);
list_move(&page->lru, &zone->lru[LRU_UNEVICTABLE].list);
list_move(&page->lru, &zone->lruvec.lists[LRU_UNEVICTABLE]);
mem_cgroup_rotate_lru_list(page, LRU_UNEVICTABLE);
if (page_evictable(page, NULL))
goto retry;