Re: [PATCH V2 3/4] cpuset: alloc nodemask_t at heap not stack

From: Miao Xie
Date: Mon Mar 08 2010 - 20:29:19 EST


on 2010-3-9 5:27, David Rientjes wrote:
> On Mon, 8 Mar 2010, Miao Xie wrote:
>
>> Changes from V1 to V2:
>> - None
>>
>
> Both this and patch 2/4 are already in -mm, so please rebase this series
> on mmotm-2010-03-04-18-05.

ok, I'll do it.

>
>> @@ -1381,39 +1394,46 @@ static void cpuset_attach(struct cgroup_subsys *ss, struct cgroup *cont,
>> struct cgroup *oldcont, struct task_struct *tsk,
>> bool threadgroup)
>> {
>> - nodemask_t from, to;
>> struct mm_struct *mm;
>> struct cpuset *cs = cgroup_cs(cont);
>> struct cpuset *oldcs = cgroup_cs(oldcont);
>> + NODEMASK_ALLOC(nodemask_t, from, GFP_KERNEL);
>> + NODEMASK_ALLOC(nodemask_t, to, GFP_KERNEL);
>> +
>> + if (from == NULL || to == NULL)
>> + return;
>>
>
> You're potentially leaking one of the allocated nodemasks there if the
> other is -ENOMEM.

Sorry for my mistake. I'll fix it in the next version.

Thanks!
Miao

>
>
>


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