On Tue, 13 Mar 2012 17:34:08 +0400, Glauber Costa <glommer@xxxxxxxxxxxxx> wrote:
> On 03/13/2012 11:07 AM, Aneesh Kumar K.V wrote:
> > if (type == _MEM)
> > ret = mem_cgroup_resize_limit(memcg, val);
> > - else
> > + else if (type == _MEMHUGETLB) {
> > + int idx = MEMFILE_IDX(cft->private);
> > + ret = res_counter_set_limit(&memcg->hugepage[idx], val);
> > + } else
> > ret = mem_cgroup_resize_memsw_limit(memcg, val);
> > break;
> > case RES_SOFT_LIMIT:
>
> What if a user try to set limit < usage ? Isn't there any reclaim that
> we could possibly do, like it is done by normal memcg ?
No, HugeTLB doesn't support reclaim. If we set the limit to a value
below current usage, future allocations will fail, but we don't reclaim.
-aneesh
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