On Wed, Jun 2, 2010 at 1:20 PM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote: > > Yes sure. The main thread can exit via sys_exit(), this doesn't affect > the thread group. Of course, I am not saying this is common practice, > perhaps no "important" app does this. This check has been in cgroups for quite a while and no-one's complained so far... > But I still can't understand why we can't just remove it. Both > cgroup_attach_task() and cgroup_attach_proc() should handle the > possible races correctly anyway. The "it" that you're proposing to remove is in fact the code that handles those races. Anyway, I think this issue is orthogonal to the movability of entire processes - with Ben's patch, an exited-but-not-reaped group leader is immovable either via "tasks" or "cgroup.procs". Changing the race condition handling to allow such movement would be a separate issue. Paul Paul _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
