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authorJohannes Weiner <jweiner@redhat.com>2012-01-12 17:18:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-12 20:13:05 -0800
commit925b7673cce39116ce61e7a06683a4a0dad1e72a (patch)
tree66c134db836e531e196ee3dfc23c124ff74ac827 /mm/swap.c
parent6290df545814990ca2663baf6e894669132d5f73 (diff)
downloadop-kernel-dev-925b7673cce39116ce61e7a06683a4a0dad1e72a.zip
op-kernel-dev-925b7673cce39116ce61e7a06683a4a0dad1e72a.tar.gz
mm: make per-memcg LRU lists exclusive
Now that all code that operated on global per-zone LRU lists is converted to operate on per-memory cgroup LRU lists instead, there is no reason to keep the double-LRU scheme around any longer. The pc->lru member is removed and page->lru is linked directly to the per-memory cgroup LRU lists, which removes two pointers from a descriptor that exists for every page frame in the system. Signed-off-by: Johannes Weiner <jweiner@redhat.com> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Ying Han <yinghan@google.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: 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> 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.c23
1 files changed, 15 insertions, 8 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 76ef79d..126da29 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -232,12 +232,14 @@ static void pagevec_lru_move_fn(struct pagevec *pvec,
static void pagevec_move_tail_fn(struct page *page, void *arg)
{
int *pgmoved = arg;
- struct zone *zone = page_zone(page);
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
enum lru_list lru = page_lru_base_type(page);
- list_move_tail(&page->lru, &zone->lruvec.lists[lru]);
- mem_cgroup_rotate_reclaimable_page(page);
+ struct lruvec *lruvec;
+
+ lruvec = mem_cgroup_lru_move_lists(page_zone(page),
+ page, lru, lru);
+ list_move_tail(&page->lru, &lruvec->lists[lru]);
(*pgmoved)++;
}
}
@@ -476,12 +478,13 @@ static void lru_deactivate_fn(struct page *page, void *arg)
*/
SetPageReclaim(page);
} else {
+ struct lruvec *lruvec;
/*
* The page's writeback ends up during pagevec
* We moves tha page into tail of inactive.
*/
- list_move_tail(&page->lru, &zone->lruvec.lists[lru]);
- mem_cgroup_rotate_reclaimable_page(page);
+ lruvec = mem_cgroup_lru_move_lists(zone, page, lru, lru);
+ list_move_tail(&page->lru, &lruvec->lists[lru]);
__count_vm_event(PGROTATED);
}
@@ -663,6 +666,8 @@ void lru_add_page_tail(struct zone* zone,
SetPageLRU(page_tail);
if (page_evictable(page_tail, NULL)) {
+ struct lruvec *lruvec;
+
if (PageActive(page)) {
SetPageActive(page_tail);
active = 1;
@@ -672,11 +677,13 @@ void lru_add_page_tail(struct zone* zone,
lru = LRU_INACTIVE_ANON;
}
update_page_reclaim_stat(zone, page_tail, file, active);
+ lruvec = mem_cgroup_lru_add_list(zone, page_tail, lru);
if (likely(PageLRU(page)))
- __add_page_to_lru_list(zone, page_tail, lru,
- page->lru.prev);
+ list_add(&page_tail->lru, page->lru.prev);
else
- add_page_to_lru_list(zone, page_tail, lru);
+ list_add(&page_tail->lru, &lruvec->lists[lru]);
+ __mod_zone_page_state(zone, NR_LRU_BASE + lru,
+ hpage_nr_pages(page_tail));
} else {
SetPageUnevictable(page_tail);
add_page_to_lru_list(zone, page_tail, LRU_UNEVICTABLE);
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