On Fri, Oct 22, 2010 at 01:57:55PM -0700, Matt Helsley wrote: > On Fri, Oct 22, 2010 at 04:11:41PM +0800, Li Zefan wrote: > > To make it bindable, we need to thaw all processes when unbinding > > the freezer subsystem from a cgroup hierarchy. > > > > Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx> > > Based on experience using cgroups and questions we've fielded in the > past on IRC I'd say users will really appreciate this. > > We're planning to use the freezer in checkpoint/restart. Since > checkpoint requires the tasks to remain frozen for the duration of > the syscall we add a kernel-internal freezer subsystem interface > which prevents the cgroup from thawing. So we'll need some way to > "block" unbinding for that as well. And in case you're curious here are the portions of the checkpoint/restart tree which implement the above: http://www.linux-cr.org/git/?p=linux-cr.git;a=commitdiff;h=a584c1c6b729a544c76cbb173ce62ffb6575b1d3 http://www.linux-cr.org/git/?p=linux-cr.git;a=commitdiff;h=34869146ecd662352c0024e0769ec77e643fb1e1 Cheers, -Matt Helsley _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
