On Wed, Feb 22, 2017 at 04:58:11PM +0100, Laurent Dufour wrote: > Until a soft limit is set to a cgroup, the soft limit data are useless > so delay this allocation when a limit is set. > > Suggested-by: Michal Hocko <mhocko@xxxxxxxxxx> > Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxxxxxxx> > --- <snip> > @@ -3000,6 +3035,8 @@ static ssize_t mem_cgroup_write(struct kernfs_open_file *of, > } > break; > case RES_SOFT_LIMIT: > + if (!soft_limit_initialized) > + soft_limit_initialize(); What happens if this fails? Do we disable this interface? It's a good idea, but I wonder if we can deal with certain memory cgroups not supporting soft limits due to memory shortage at the time of using them. > memcg->soft_limit = nr_pages; > ret = 0; > break; Balbir Singh. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
