Comment 63 for bug 188226

Doesn't seem to allow more than one task to be added:

root@dominubuntu:/dev/cpuset# ls
cpuacct.usage cpuset.memory_pressure_enabled ff
cpuset.cpu_exclusive cpuset.memory_spread_page notify_on_release
cpuset.cpus cpuset.memory_spread_slab pulse
cpuset.mem_exclusive cpuset.mems releasable
cpuset.memory_migrate cpuset.sched_load_balance release_agent
cpuset.memory_pressure cpu.shares tasks
root@dominubuntu:/dev/cpuset# mkdir test
root@dominubuntu:/dev/cpuset# cd test
root@dominubuntu:/dev/cpuset/test# echo 0 > cpuset.cpus
root@dominubuntu:/dev/cpuset/test# echo 0 > cpuset.mems
root@dominubuntu:/dev/cpuset/test# echo $$ > tasks
root@dominubuntu:/dev/cpuset/test# echo 6781 > tasks
bash: echo: write error: Operation not permitted