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| author | Johannes Weiner <hannes@cmpxchg.org> | 2015-11-06 03:50:23 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 04:34:48 +0100 |
| commit | f5fc3c5d817435970aa301d066820a9ac12c8120 (patch) | |
| tree | 7b0d1d981ca5308c47eef73050e7f81feca43f0e /mm | |
| parent | mm, hugetlbfs: optimize when NUMA=n (diff) | |
| download | linux-f5fc3c5d817435970aa301d066820a9ac12c8120.tar.xz linux-f5fc3c5d817435970aa301d066820a9ac12c8120.zip | |
mm: memcontrol: eliminate root memory.current
memory.current on the root level doesn't add anything that wouldn't be
more accurate and detailed using system statistics. It already doesn't
include slabs, and it'll be a pain to keep in sync when further memory
types are accounted in the memory controller. Remove it.
Note that this applies to the new unified hierarchy interface only.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tejun Heo <tj@kernel.org>
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 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a44494f3a965..59b100fde35f 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5026,7 +5026,9 @@ static void mem_cgroup_bind(struct cgroup_subsys_state *root_css) static u64 memory_current_read(struct cgroup_subsys_state *css, struct cftype *cft) { - return mem_cgroup_usage(mem_cgroup_from_css(css), false); + struct mem_cgroup *memcg = mem_cgroup_from_css(css); + + return (u64)page_counter_read(&memcg->memory) * PAGE_SIZE; } static int memory_low_show(struct seq_file *m, void *v) @@ -5138,6 +5140,7 @@ static int memory_events_show(struct seq_file *m, void *v) static struct cftype memory_files[] = { { .name = "current", + .flags = CFTYPE_NOT_ON_ROOT, .read_u64 = memory_current_read, }, { |