> I am also seeing what looks like a leak somewhere in the cgroup code as > well. After some runs of the same reproducer I get into a state where > after everything is clean up. All of the control groups have been > removed and the cgroup filesystem is unmounted, I can mount a cgroup > filesystem with that same combindation of subsystems, but I can't mount > a cgroup filesystem with any of those subsystems in any other > combination. So I am guessing that the superblock is from the original > mounting is still lingering for some reason. >
If this happens again, you can check /proc/cgroups, #subsys_name hierarchy num_cgroups enabled cpuset 0 1 1 debug 0 1 1 cpu 0 1 1 cpuacct 0 1 1 memory 0 1 1 devices 0 1 1 freezer 0 1 1 blkio 0 1 1 If "hierachy" is not 0, then it didn't really unmounted. If "num_cgroups" is not 1, then there're some cgroups not really destroyed though they've been rmdired. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
