linux-kernel - Re: [PATCH V2 3/4] cpuset: alloc nodemask

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Date:	Tue, 09 Mar 2010 09:29:06 +0800
From:	Miao Xie <miaox@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Nick Piggin <npiggin@...e.de>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	Paul Menage <menage@...gle.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 3/4] cpuset: alloc nodemask_t at heap not stack

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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