Re: [PATCH 1/3] Btrfs: fix possible memory leak in find_parent_nodes()

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On thu, 8 Aug 2013 13:22:12 +0800, Liu Bo wrote:
> On Thu, Aug 08, 2013 at 01:04:17PM +0800, Wang Shilong wrote:
>> Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
>> Reviewed-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
> 
> I think I know the whys :p, but still a log is preferred.

Right, we need a explanation, we will update this patch soon.

Thanks
Miao

> 
> -liubo
> 
>> ---
>>  fs/btrfs/backref.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
>> index cb73a12..54e7610 100644
>> --- a/fs/btrfs/backref.c
>> +++ b/fs/btrfs/backref.c
>> @@ -911,7 +911,6 @@ again:
>>  
>>  	while (!list_empty(&prefs)) {
>>  		ref = list_first_entry(&prefs, struct __prelim_ref, list);
>> -		list_del(&ref->list);
>>  		WARN_ON(ref->count < 0);
>>  		if (ref->count && ref->root_id && ref->parent == 0) {
>>  			/* no parent == root of tree */
>> @@ -954,6 +953,7 @@ again:
>>  				eie->next = ref->inode_list;
>>  			}
>>  		}
>> +		list_del(&ref->list);
>>  		kfree(ref);
>>  	}
>>  
>> -- 
>> 1.8.0.1
>>
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