On Tue, Jun 30, 2009 at 10:14:48AM -0700, Nauman Rafique wrote: > On Mon, Jun 29, 2009 at 7:06 AM, Vivek Goyal<vgoyal@xxxxxxxxxx> wrote: > > On Mon, Jun 29, 2009 at 01:27:47PM +0800, Gui Jianfeng wrote: > >> Hi Vivek, > >> > >> There's no need to travel the iocg->group_data for each iog > >> when exiting a elevator, that costs too much. An alternative > >> solution is reseting iocg_id as soon as an io group unlinking > >> from a iocg. Make a decision that whether it's need to carry > >> out deleting action by checking iocg_id. > >> > > > > Thanks Gui. This makes sense to me. We can check iog->iocg_id to determine > > wheter group is still on iocg list or not instead of traversing the list. > > > > Nauman, do you see any issues with the patch? > > Looks like this should work. The only iog with zero id is associated > with root group, which gets deleted outside of this function anyways. > Minor correction. Even root group has id "1" and not zero. 0 is associated with error when cgroup is not present. Thanks Vivek -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
