Re: [PATCH v1 2/3] scsi: ufs: Optimize host lock on transfer requests send/compl paths

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To: Can Guo <cang@xxxxxxxxxxxxxx>
Subject: Re: [PATCH v1 2/3] scsi: ufs: Optimize host lock on transfer requests send/compl paths
From: Bart Van Assche <bvanassche@xxxxxxx>
Date: Thu, 1 Jul 2021 08:57:56 -0700
Cc: asutoshd@xxxxxxxxxxxxxx, nguyenb@xxxxxxxxxxxxxx, hongwus@xxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, kernel-team@xxxxxxxxxxx, Stanley Chu <stanley.chu@xxxxxxxxxxxx>, Alim Akhtar <alim.akhtar@xxxxxxxxxxx>, Avri Altman <avri.altman@xxxxxxx>, "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx>, "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, Matthias Brugger <matthias.bgg@xxxxxxxxx>, Bean Huo <beanhuo@xxxxxxxxxx>, Jaegeuk Kim <jaegeuk@xxxxxxxxxx>, Adrian Hunter <adrian.hunter@xxxxxxxxx>, Kiwoong Kim <kwmad.kim@xxxxxxxxxxx>, Satya Tangirala <satyat@xxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, "moderated list:ARM/Mediatek SoC support" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, "moderated list:ARM/Mediatek SoC support" <linux-mediatek@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <464097469b09752ce4ebb38c08f1a94a@codeaurora.org>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0

On 6/28/21 10:41 PM, Can Guo wrote:
> I am waiting for more infos/logs/dumps on Buganizor to look into it.
> With above calltrace snippet, it is hard to figure out what is happening.
> Besides, we've tested this series before go upstream and we didn't
> see such problem.

Hi Can,

Jaegeuk has posted a fix as you may have noticed.

Thanks,

Bart.

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References:
- [PATCH v1 0/3] Optimize host lock on TR send/compl paths and utilize UTRLCNR
  - From: Can Guo
- [PATCH v1 2/3] scsi: ufs: Optimize host lock on transfer requests send/compl paths
  - From: Can Guo
- Re: [PATCH v1 2/3] scsi: ufs: Optimize host lock on transfer requests send/compl paths
  - From: Bart Van Assche
- Re: [PATCH v1 2/3] scsi: ufs: Optimize host lock on transfer requests send/compl paths
  - From: Can Guo

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