linux-kernel - Re: [PATCH v13 0/3] scsi: ufs: Add Host Performance Booster Support

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Message-ID: <20201207180655.GA30657@infradead.org>
Date:   Mon, 7 Dec 2020 18:06:55 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Greg KH <greg@...ah.com>
Cc:     Daejun Park <daejun7.park@...sung.com>,
        "avri.altman@....com" <avri.altman@....com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "beanhuo@...ron.com" <beanhuo@...ron.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "bvanassche@....org" <bvanassche@....org>,
        "tomas.winkler@...el.com" <tomas.winkler@...el.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>,
        "gregkh@...gle.com" <gregkh@...gle.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sang-yoon Oh <sangyoon.oh@...sung.com>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        Adel Choi <adel.choi@...sung.com>,
        BoRam Shin <boram.shin@...sung.com>,
        SEUNGUK SHIN <seunguk.shin@...sung.com>
Subject: Re: [PATCH v13 0/3] scsi: ufs: Add Host Performance Booster Support

On Mon, Dec 07, 2020 at 06:56:23PM +0100, Greg KH wrote:
> On Tue, Nov 03, 2020 at 01:40:21PM +0900, Daejun Park wrote:
> > Changelog:
> > 
> > v12 -> v13
> > 1. Cleanup codes by comments from Can Guo.
> > 2. Add HPB related descriptor/flag/attributes in sysfs.
> > 3. Change base commit from 5.10/scsi-queue to 5.11/scsi-queue.
> 
> What ever happened to this patchset?  Did it get merged into a scsi tree
> for 5.11-rc1, or is there something still pending that needs to be done
> on it to make it acceptable?

I think the problem here is not the code, but that the features is
fundamentally a bad idea, and one that so far has not even shown
to help real workloads vs the usual benchmarketing.