cgroup: rstat: Mark benign data race to silence KCSAN

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There is a race between updaters and flushers (flush can possibly miss
the latest update(s)). This is expected as explained in
cgroup_rstat_updated() comment, add also machine readable annotation so
that KCSAN results aren't noisy.

Reported-by: Hao Sun <sunhao.th@gmail.com>
Link: https://lore.kernel.org/r/CACkBjsbPVdkub=e-E-p1WBOLxS515ith-53SFdmFHWV_QMo40w@mail.gmail.com
Suggested-by: Hao Sun <sunhao.th@gmail.com>

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Michal Koutný 2021-11-03 17:58:45 +01:00 • committed by Tejun Heo

parent 8ab7745879

commit eda09706b2

1 changed files with 1 additions and 1 deletions

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kernel/cgroup/rstat.c

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