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authorLi Zefan <lizefan@huawei.com>2014-06-05 13:16:30 +0400
committerTejun Heo <tj@kernel.org>2014-06-05 17:52:51 +0400
commitc731ae1d0f02a300697a8b1564780ad28a6c2013 (patch)
tree4887aaada0e6f6328449bc41d4b4e2b911c29df2 /block/blk-throttle.c
parent1f779fb28aa07350d72976d304591d216ca86f0e (diff)
downloadlinux-c731ae1d0f02a300697a8b1564780ad28a6c2013.tar.xz
cgroup: disallow disabled controllers on the default hierarchy
After booting with cgroup_disable=memory, I still saw memcg files in the default hierarchy, and I can write to them, though it won't take effect. # dmesg ... Disabling memory control group subsystem ... # mount -t cgroup -o __DEVEL__sane_behavior xxx /cgroup # ls /cgroup ... memory.failcnt memory.move_charge_at_immigrate memory.force_empty memory.numa_stat memory.limit_in_bytes memory.oom_control ... # cat /cgroup/memory.usage_in_bytes 0 tj: Minor comment update. Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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