diff options
| author |   Wei Yang <richard.weiyang@gmail.com> | 2022-04-28 23:15:59 -0700 |
|---|---|---|
| committer |   akpm <akpm@linux-foundation.org> | 2022-04-28 23:15:59 -0700 |
| commit | c449d5599287742f11b0f2ae34b921dc0837d1c6 (patch) | |
| tree | ecfaf0959f003228feffc03c2adf74e5a232b823 /mm/memcontrol.c | |
| parent | mm/memcg: move generation assignment and comparison together (diff) | |
| download | linux-dev-c449d5599287742f11b0f2ae34b921dc0837d1c6.tar.xz linux-dev-c449d5599287742f11b0f2ae34b921dc0837d1c6.zip | |
mm/memcg: non-hierarchical mode is deprecated
After commit bef8620cd8e0 ("mm: memcg: deprecate the non-hierarchical
mode"), we won't have a NULL parent except root_mem_cgroup. And this case
is handled when (memcg == root).
Link: https://lkml.kernel.org/r/20220403020833.26164-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1ae0a2afe476..b2d5c6618c8a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6587,9 +6587,6 @@ void mem_cgroup_calculate_protection(struct mem_cgroup *root, return; parent = parent_mem_cgroup(memcg); - /* No parent means a non-hierarchical mode on v1 memcg */ - if (!parent) - return; if (parent == root) { memcg->memory.emin = READ_ONCE(memcg->memory.min); |