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| author | Muchun Song <songmuchun@bytedance.com> | 2021-06-29 05:37:47 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 20:53:50 +0300 |
| commit | 8dc87c7d1fec8851925ca96ade0d65d3dcf89cce (patch) | |
| tree | e25cb81bef038d010a1aba353fdbb06b9ae5150f /mm/readahead.c | |
| parent | c5c8b16b596e15471db22ed8ed10aafbf1a11878 (diff) | |
| download | linux-8dc87c7d1fec8851925ca96ade0d65d3dcf89cce.tar.xz | |
mm: memcontrol: fix page charging in page replacement
Patch series "memcontrol code cleanup and simplification", v3.
This patch (of 8):
The pages aren't accounted at the root level, so do not charge the page to
the root memcg in page replacement. Although we do not display the value
(mem_cgroup_usage) so there shouldn't be any actual problem, but there is
a WARN_ON_ONCE in the page_counter_cancel(). Who knows if it will
trigger? So it is better to fix it.
Link: https://lkml.kernel.org/r/20210417043538.9793-1-songmuchun@bytedance.com
Link: https://lkml.kernel.org/r/20210417043538.9793-2-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/readahead.c')
0 files changed, 0 insertions, 0 deletions