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 <[email protected]> > Signed-off-by: Laurent Dufour <[email protected]> > --- <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.
