linux-kernel - Re: [PATCH -next 1/2] block: fix that blk_time_get

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Date: Fri, 12 Apr 2024 09:24:58 +0800
From: Yu Kuai <yukuai3@...wei.com>
To: Jens Axboe <axboe@...nel.dk>, Yu Kuai <yukuai1@...weicloud.com>,
	<johannes.thumshirn@....com>
CC: <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<yi.zhang@...wei.com>, <yangerkun@...wei.com>
Subject: Re: [PATCH -next 1/2] block: fix that blk_time_get_ns() doesn't
 update time after schedule

Hi,

在 2024/04/12 0:44, Jens Axboe 写道:
> On 4/10/24 9:23 PM, Yu Kuai wrote:
>> diff --git a/block/blk-core.c b/block/blk-core.c
>> index a16b5abdbbf5..e317d7bc0696 100644
>> --- a/block/blk-core.c
>> +++ b/block/blk-core.c
>> @@ -1195,6 +1195,7 @@ void __blk_flush_plug(struct blk_plug *plug, bool from_schedule)
>>   	if (unlikely(!rq_list_empty(plug->cached_rq)))
>>   		blk_mq_free_plug_rqs(plug);
>>   
>> +	plug->cur_ktime = 0;
>>   	current->flags &= ~PF_BLOCK_TS;
>>   }
> 
> We can just use blk_plug_invalidate_ts() here, but not really important.
> I think this one should go into 6.9, and patch 2 should go into 6.10,
> however.

This sounds great! Do you want me to update and send them separately?

Thanks,
Kuai

>