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

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Message-ID: <20220922053137.GA27191@lst.de>
Date:   Thu, 22 Sep 2022 07:31:37 +0200
From:   Christoph Hellwig <hch@....de>
To:     Rita Lin <ritach_lin@...son.com>
Cc:     Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Christoph Hellwig <hch@....de>,
        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

On Thu, Sep 22, 2022 at 02:03:01AM +0000, Rita Lin wrote:
> Dear receivers,
> 
> We would like to apply to disable write zeros support on Phison SSDs.

Can you explain why these SSDs do claim write Zeroes but it doesn't
actually work, and why this is not fixable in a firmware update?