Re: [PATCH v2 4/5] blk-iocost: fix sleeping in atomic context warnning

Yu Kuai
2022-11-23T10:38:48Z

Hi, Tejun

在 2022/11/23 8:42, Tejun Heo 写道:
> On Tue, Nov 22, 2022 at 05:14:29PM -0700, Jens Axboe wrote:
>>>> Then match_strdup() and kfree() in match_NUMBER() can be replaced with
>>>> get_buffer() and put_buffer().
>>>
>>> Sorry about the late reply. Yeah, something like this.

Thanks for the feedback. I'll remove patch 4 from this seies and send a
new patch separately soon.

Thanks,
Kuai
>>
>> Doesn't local_irq_disable() imply preemption disable as well?
>
> Right, I was thinking about spin_lock_irq() which doesn't imply disabling
> preemption in PREEMPT_RT. local_irq_disable() is actual irq disable even on
> RT. It should be fine on its own.
>
> Thanks.
>