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| author | Vladimir Davydov <vdavydov@parallels.com> | 2015-03-12 16:26:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-03-12 18:46:08 -0700 |
| commit | 7feee590bb18ffc42636975f74c2c3120ce1901c (patch) | |
| tree | 58e0fcfa29b1d7a84c7688062a8374464739b7eb /mm | |
| parent | a5a6579db33af91f4f5134e14be758dc71c1b694 (diff) | |
| download | linux-7feee590bb18ffc42636975f74c2c3120ce1901c.tar.gz linux-7feee590bb18ffc42636975f74c2c3120ce1901c.tar.bz2 linux-7feee590bb18ffc42636975f74c2c3120ce1901c.zip | |
memcg: disable hierarchy support if bound to the legacy cgroup hierarchy
If the memory cgroup controller is initially mounted in the scope of the
default cgroup hierarchy and then remounted to a legacy hierarchy, it will
still have hierarchy support enabled, which is incorrect. We should
disable hierarchy support if bound to the legacy cgroup hierarchy.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 9fe07692eaad..b34ef4a32a3b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5232,7 +5232,9 @@ static void mem_cgroup_bind(struct cgroup_subsys_state *root_css) * on for the root memcg is enough. */ if (cgroup_on_dfl(root_css->cgroup)) - mem_cgroup_from_css(root_css)->use_hierarchy = true; + root_mem_cgroup->use_hierarchy = true; + else + root_mem_cgroup->use_hierarchy = false; } static u64 memory_current_read(struct cgroup_subsys_state *css, |