linux-kernel - RE: nvme-pci: disable write zeros support on SSDs

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Message-ID: <1c9807fea3424be486190a99c923a228@ExMBX2.phison.com>
Date:   Thu, 22 Sep 2022 06:24:35 +0000
From:   Rita Lin <ritach_lin@...son.com>
To:     Christoph Hellwig <hch@....de>
CC:     Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Sagi Grimberg <sagi@...mberg.me>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        �S晟�| <redd_huang@...son.com>,
        Tina Hsu <tina_hsu@...son.com>,
        Vita Hsueh (薛伊倩) <Vita.Hsueh@...ntatw.com>,
        "Wang, Audrey" <audrey.wang@...com>
Subject: RE: nvme-pci: disable write zeros support on SSDs

Dear Christoph,

Thank you for your advice.
Please find the updated patch in the attached file.

Rita Lin林萁煊
+886-37-586-896 Ext.80051
ritach_lin@...son.com


-----Original Message-----
From: Christoph Hellwig [mailto:hch@....de]
Sent: Thursday, September 22, 2022 1:53 PM
To: Rita Lin <ritach_lin@...son.com>
Cc: Christoph Hellwig <hch@....de>; Keith Busch <kbusch@...nel.org>; Jens Axboe <axboe@...com>; Sagi Grimberg <sagi@...mberg.me>; linux-nvme@...ts.infradead.org; linux-kernel@...r.kernel.org; �S晟�| <redd_huang@...son.com>; Tina Hsu <tina_hsu@...son.com>; Vita Hsueh (薛伊倩) <Vita.Hsueh@...ntatw.com>; Wang, Audrey <audrey.wang@...com>
Subject: Re: nvme-pci: disable write zeros support on SSDs

On Thu, Sep 22, 2022 at 05:50:52AM +0000, Rita Lin wrote:
> Dear Christoph,
>
> Thank you for your reply.
> These SSDs do support write 0 command and the function was tested without issue.
> But since these SSDs are DRAMless products, the write 0 command will take a lot longer to complete which had impacted the product performance.
> Due to the FW had been frozen, we would like to check if we could apply CL for these 2 products.

please add a comment explaining this to the IDs entry.


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Download attachment "0001-PATCH-Add-Phison-E3C-E4C-Disable-Write-Zero.patch" of type "application/octet-stream" (1354 bytes)