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authorKirill A. Shutemov <kirill@shutemov.name>2010-10-07 12:59:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-07 13:31:21 -0700
commitad4ca5f4b70236dab5e457ff6567d36f75d2e7c5 (patch)
treeb3c5f477a79516389201d342dda2a3591cfa4332 /mm/memcontrol.c
parentf241e6607b5a5aefa23c652dbe947b7465633984 (diff)
downloadvexpress-lsk-ad4ca5f4b70236dab5e457ff6567d36f75d2e7c5.tar.gz
memcg: fix thresholds with use_hierarchy == 1
We need to check parent's thresholds if parent has use_hierarchy == 1 to be sure that parent's threshold events will be triggered even if parent itself is not active (no MEM_CGROUP_EVENTS). Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3eed583895a..9be3cf8a5da 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3587,9 +3587,13 @@ unlock:
static void mem_cgroup_threshold(struct mem_cgroup *memcg)
{
- __mem_cgroup_threshold(memcg, false);
- if (do_swap_account)
- __mem_cgroup_threshold(memcg, true);
+ while (memcg) {
+ __mem_cgroup_threshold(memcg, false);
+ if (do_swap_account)
+ __mem_cgroup_threshold(memcg, true);
+
+ memcg = parent_mem_cgroup(memcg);
+ }
}
static int compare_thresholds(const void *a, const void *b)