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authorHugh Dickins <hughd@google.com>2012-05-29 15:07:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:28 -0700
commitfa9add641b1b1c564db916accac1db346e7a2759 (patch)
tree875e74ec4d7fed0018fdbc134ad899949c5e3384 /mm/compaction.c
parent75b00af77ed5b5a3d55549f9e0c33f3969b9330c (diff)
downloadlinux-fa9add641b1b1c564db916accac1db346e7a2759.tar.gz
mm/memcg: apply add/del_page to lruvec
Take lruvec further: pass it instead of zone to add_page_to_lru_list() and del_page_from_lru_list(); and pagevec_lru_move_fn() pass lruvec down to its target functions. This cleanup eliminates a swathe of cruft in memcontrol.c, including mem_cgroup_lru_add_list(), mem_cgroup_lru_del_list() and mem_cgroup_lru_move_lists() - which never actually touched the lists. In their place, mem_cgroup_page_lruvec() to decide the lruvec, previously a side-effect of add, and mem_cgroup_update_lru_size() to maintain the lru_size stats. Whilst these are simplifications in their own right, the goal is to bring the evaluation of lruvec next to the spin_locking of the lrus, in preparation for a future patch. Signed-off-by: Hugh Dickins <hughd@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org> 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/compaction.c')
-rw-r--r--mm/compaction.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 74e1b380383..4ac338af512 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -227,6 +227,7 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
unsigned long nr_scanned = 0, nr_isolated = 0;
struct list_head *migratelist = &cc->migratepages;
isolate_mode_t mode = 0;
+ struct lruvec *lruvec;
/*
* Ensure that there are not too many pages isolated from the LRU
@@ -328,6 +329,8 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
if (cc->mode != COMPACT_SYNC)
mode |= ISOLATE_ASYNC_MIGRATE;
+ lruvec = mem_cgroup_page_lruvec(page, zone);
+
/* Try isolate the page */
if (__isolate_lru_page(page, mode) != 0)
continue;
@@ -335,7 +338,7 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
VM_BUG_ON(PageTransCompound(page));
/* Successfully isolated */
- del_page_from_lru_list(zone, page, page_lru(page));
+ del_page_from_lru_list(page, lruvec, page_lru(page));
list_add(&page->lru, migratelist);
cc->nr_migratepages++;
nr_isolated++;