Re: Question regarding list_for_each_entry_safe usage in move_one_task

[Lei Wen]

On Mon, Sep 9, 2013 at 7:15 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Mon, Sep 02, 2013 at 02:26:45PM +0800, Lei Wen wrote:
>> Hi Peter,
>>
>> I find one list API usage may not be correct in current fair.c code.
>> In move_one_task function, it may iterate through whole cfs_tasks
>> list to get one task to move.
>>
>> But in dequeue_task(), it would delete one task node from list
>> without the lock protection. So that we could see from
>> list_for_each_entry_safe API definitoin:
>
> Both sites hold the required rq->lock.

I see, sorry for the noise...

Thanks,
Lei
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/