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memcg: add accessor to mem_cgroup.css

Browse source 
So that an outside user can free the reference count grabbed by
try_get_mem_cgroup_from_page().

CC: KOSAKI Motohiro <[email protected]>
CC: Hugh Dickins <[email protected]>
CC: Daisuke Nishimura <[email protected]>
CC: Balbir Singh <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
This commit is contained in:
Wu Fengguang 2009-12-16 12:19:59 +01:00 • committed by Andi Kleen
commit d324236b33
2 changed files with 12 additions and 0 deletions
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5
mm/memcontrol.c
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@ -282,6 +282,11 @@ mem_cgroup_zoneinfo(struct mem_cgroup *mem, int nid, int zid)
return &mem->info.nodeinfo[nid]->zoneinfo[zid];
}
struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem)
{
return &mem->css;
}
static struct mem_cgroup_per_zone *
page_cgroup_zoneinfo(struct page_cgroup *pc)
{