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Date:   Wed, 31 Mar 2021 11:21:46 +0800
From:   Can Guo <cang@codeaurora.org>
To:     daejun7.park@samsung.com
Cc:     Greg KH <gregkh@linuxfoundation.org>, avri.altman@wdc.com,
        jejb@linux.ibm.com, martin.petersen@oracle.com,
        asutoshd@codeaurora.org, stanley.chu@mediatek.com,
        bvanassche@acm.org, huobean@gmail.com,
        ALIM AKHTAR <alim.akhtar@samsung.com>,
        linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
        JinHwan Park <jh.i.park@samsung.com>,
        Javier Gonzalez <javier.gonz@samsung.com>,
        Sung-Jun Park <sungjun07.park@samsung.com>,
        Jinyoung CHOI <j-young.choi@samsung.com>,
        Dukhyun Kwon <d_hyun.kwon@samsung.com>,
        Keoseong Park <keosung.park@samsung.com>,
        Jaemyung Lee <jaemyung.lee@samsung.com>,
        Jieon Seol <jieon.seol@samsung.com>
Subject: Re: [PATCH v32 4/4] scsi: ufs: Add HPB 2.0 support
In-Reply-To: <20210331011839epcms2p45d3d059fcd9e85a548014a79c3f388bc@epcms2p4>
References: <20210331011526epcms2p37684869a9781d1eb45bfcbfe9babd217@epcms2p3>
 <CGME20210331011526epcms2p37684869a9781d1eb45bfcbfe9babd217@epcms2p4>
 <20210331011839epcms2p45d3d059fcd9e85a548014a79c3f388bc@epcms2p4>
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On 2021-03-31 09:18, Daejun Park wrote:
> This patch supports the HPB 2.0.
> 
> The HPB 2.0 supports read of varying sizes from 4KB to 512KB.
> In the case of Read (<= 32KB) is supported as single HPB read.
> In the case of Read (36KB ~ 512KB) is supported by as a combination of
> write buffer command and HPB read command to deliver more PPN.
> The write buffer commands may not be issued immediately due to busy 
> tags.
> To use HPB read more aggressively, the driver can requeue the write 
> buffer
> command. The requeue threshold is implemented as timeout and can be
> modified with requeue_timeout_ms entry in sysfs.
> 
> Reviewed-by: Can Guo <cang@codeaurora.org>
> Reviewed-by: Bean Huo <beanhuo@micron.com>
> Signed-off-by: Daejun Park <daejun7.park@samsung.com>
> ---

Please allow me a few more days in April to have this whole series
tested one more time.

Thanks,
Can Guo.