Hello, On Thu, Oct 04, 2012 at 04:37:16PM +0900, Daisuke Nishimura wrote: > notify_on_release must be triggered when the last process in a cgroup is > move to another. But if the first(and only) process in a cgroup is moved to > another, notify_on_release is not triggered. > > # mkdir /cgroup/cpu/SRC > # mkdir /cgroup/cpu/DST > # > # echo 1 >/cgroup/cpu/SRC/notify_on_release > # echo 1 >/cgroup/cpu/DST/notify_on_release > # > # sleep 300 & > [1] 8629 > # > # echo 8629 >/cgroup/cpu/SRC/tasks > # echo 8629 >/cgroup/cpu/DST/tasks > -> notify_on_release for /SRC must be triggered at this point, > but it isn't. > > This is because put_css_set() is called before setting CGRP_RELEASABLE > in cgroup_task_migrate(), and is a regression introduce by the > commit:74a1166d(cgroups: make procs file writable), which was merged > into v3.0. > > Cc: Ben Blum <bblum@xxxxxxxxxxxxxx> > Cc: Tejun Heo <tj@xxxxxxxxxx> > Cc: Li Zefan <lizefan@xxxxxxxxxx> > Cc: <stable@xxxxxxxxxxxxxxx> # v3.0.x and later > Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Applied to cgroup/for-3.7-fixes w/ Li's ack added. Thanks! -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
