linux-kernel - Re: [PATCH] scsi: core: use blk_mq_requeue_request in __scsi_queue

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Date:   Tue, 27 Feb 2018 13:15:10 +0800
From:   "jianchao.wang" <jianchao.w.wang@...cle.com>
To:     Bart Van Assche <Bart.VanAssche@....com>,
        "jejb@...ux.vnet.ibm.com" <jejb@...ux.vnet.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>
Cc:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hch@....de" <hch@....de>
Subject: Re: [PATCH] scsi: core: use blk_mq_requeue_request in
 __scsi_queue_insert

Hi Bart

Thanks for your kindly response.

On 02/27/2018 01:12 PM, Bart Van Assche wrote:
> On Tue, 2018-02-27 at 12:00 +0800, jianchao.wang wrote:
>> On the other hand, this patch is to align the actions between blk-mq and block
>> legacy code in __scsi_queue_insert.
> 
> Hello Jianchao,
> 
> Since the legacy SCSI core unpreps an reprepares a request when requeuing it I
> think your patch does not align the blk-mq and legacy block layer actions but
> instead makes the behavior of the two code paths different.
> 

Can you share more details about this ? 

Thanks 
Jianchao