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

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Date: Fri, 12 Apr 2024 08:33:33 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Yu Kuai <yukuai3@...wei.com>, 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

On 4/11/24 7:24 PM, Yu Kuai wrote:
> Hi,
> 
> ? 2024/04/12 0:44, Jens Axboe ??:
>> 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?

I've applied 1/2 separately, so just resend 2/2 when -rc4 has been
tagged and I'll get that one queued for 6.10.

-- 
Jens Axboe