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authorIngo Molnar <mingo@kernel.org>2016-09-05 12:09:59 +0200
committerIngo Molnar <mingo@kernel.org>2016-09-05 12:09:59 +0200
commit2cc538412a1ca103923ec400a339a5b3833e0280 (patch)
treec141b83e1da736c3d069ed491816d0096e1b532a /mm/memcontrol.c
parent36e674a05164cdbb9d4a5b1b0b279fabae6c13bd (diff)
parent58763148758057ffc447bf990321d3ea86d199a0 (diff)
Merge branch 'perf/urgent' into perf/core, to pick up fixed and resolve conflicts
Conflicts: kernel/events/core.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2ff0289ad061..9a6a51a7c416 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4082,24 +4082,6 @@ static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n)
atomic_add(n, &memcg->id.ref);
}
-static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
-{
- while (!atomic_inc_not_zero(&memcg->id.ref)) {
- /*
- * The root cgroup cannot be destroyed, so it's refcount must
- * always be >= 1.
- */
- if (WARN_ON_ONCE(memcg == root_mem_cgroup)) {
- VM_BUG_ON(1);
- break;
- }
- memcg = parent_mem_cgroup(memcg);
- if (!memcg)
- memcg = root_mem_cgroup;
- }
- return memcg;
-}
-
static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n)
{
if (atomic_sub_and_test(n, &memcg->id.ref)) {
@@ -5821,6 +5803,24 @@ static int __init mem_cgroup_init(void)
subsys_initcall(mem_cgroup_init);
#ifdef CONFIG_MEMCG_SWAP
+static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
+{
+ while (!atomic_inc_not_zero(&memcg->id.ref)) {
+ /*
+ * The root cgroup cannot be destroyed, so it's refcount must
+ * always be >= 1.
+ */
+ if (WARN_ON_ONCE(memcg == root_mem_cgroup)) {
+ VM_BUG_ON(1);
+ break;
+ }
+ memcg = parent_mem_cgroup(memcg);
+ if (!memcg)
+ memcg = root_mem_cgroup;
+ }
+ return memcg;
+}
+
/**
* mem_cgroup_swapout - transfer a memsw charge to swap
* @page: page whose memsw charge to transfer