From: Hans Holmberg <hans.ml.holmberg@owltronix.com>
To: "Matias Bjørling" <mb@lightnvm.io>
Cc: "Javier González" <javier@javigon.com>,
"Christoph Hellwig" <hch@lst.de>, "Jens Axboe" <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: Re: [PATCH] lightnvm: deprecated OCSSD support and schedule it for removal in Linux 5.15
Date: Mon, 12 Apr 2021 13:20:07 +0200 [thread overview]
Message-ID: <CANr-nt0YpZ0CuREDu613LM7yBK_qgPfwg-bNU-T=2me5GJT=Gw@mail.gmail.com> (raw)
In-Reply-To: <3bf88f25-d06d-5b95-7eff-dfb8f78bc389@lightnvm.io>
On Mon, Apr 12, 2021 at 12:20 PM Matias Bjørling <mb@lightnvm.io> wrote:
>
> On 12/04/2021 11.49, Javier González wrote:
> > On 12.04.2021 11:26, Matias Bjørling wrote:
> >> On 12/04/2021 11.21, Matias Bjørling wrote:
> >>> On 12/04/2021 10.12, Christoph Hellwig wrote:
> >>>> Lightnvm was an innovative idea to expose more low-level control
> >>>> over SSDs.
> >>>> But it failed to get properly standardized and remains a
> >>>> non-standarized
> >>>> extension to NVMe that requires vendor specific quirks for a few
> >>>> now mostly
> >>>> obsolete SSD devices. The standardized ZNS command set for NVMe
> >>>> has take
> >>>> over a lot of the approaches and allows for fully standardized
> >>>> operation.
> >>>>
> >>>> Remove the Linux code to support open channel SSDs as the few
> >>>> production
> >>>> deployments of the above mentioned SSDs are using userspace driver
> >>>> stacks
> >>>> instead of the fairly limited Linux support.
> >>>>
> >>>> Signed-off-by: Christoph Hellwig <hch@lst.de>
> >>>> ---
> >>>> drivers/lightnvm/Kconfig | 4 +++-
> >>>> drivers/lightnvm/core.c | 2 ++
> >>>> 2 files changed, 5 insertions(+), 1 deletion(-)
> >>>>
> >>>> diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
> >>>> index 4c2ce210c1237d..04caa0f2d445c7 100644
> >>>> --- a/drivers/lightnvm/Kconfig
> >>>> +++ b/drivers/lightnvm/Kconfig
> >>>> @@ -4,7 +4,7 @@
> >>>> #
> >>>> menuconfig NVM
> >>>> - bool "Open-Channel SSD target support"
> >>>> + bool "Open-Channel SSD target support (DEPRECATED)"
> >>>> depends on BLOCK
> >>>> help
> >>>> Say Y here to get to enable Open-channel SSDs.
> >>>> @@ -15,6 +15,8 @@ menuconfig NVM
> >>>> If you say N, all options in this submenu will be skipped
> >>>> and disabled
> >>>> only do this if you know what you are doing.
> >>>> + This code is deprecated and will be removed in Linux 5.15.
> >>>> +
> >>>> if NVM
> >>>> config NVM_PBLK
> >>>> diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
> >>>> index 28ddcaa5358b14..4394f47c81296a 100644
> >>>> --- a/drivers/lightnvm/core.c
> >>>> +++ b/drivers/lightnvm/core.c
> >>>> @@ -1174,6 +1174,8 @@ int nvm_register(struct nvm_dev *dev)
> >>>> {
> >>>> int ret, exp_pool_size;
> >>>> + pr_warn_once("lightnvm support is deprecated and will be
> >>>> removed in Linux 5.15.\n");
> >>>> +
> >>>> if (!dev->q || !dev->ops) {
> >>>> kref_put(&dev->ref, nvm_free);
> >>>> return -EINVAL;
> >>>
> >>> Thanks, Christoph.
> >>>
> >>> I'll send it to Jens with today's lightnvm PR.
> >>
> >> Javier, can I add your reviewed-by?
> >>
> >
> > Yes, please.
> >
> > I'll crack a beer and cheer on it tonight. Good times :)
All those patches lost in time, like tears in rain..
Cheers to everyone involved!
Hans
> >
> > Javier
>
> Thank you.
>
prev parent reply other threads:[~2021-04-12 11:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 8:12 [PATCH] lightnvm: deprecated OCSSD support and schedule it for removal in Linux 5.15 Christoph Hellwig
2021-04-12 9:21 ` Matias Bjørling
2021-04-12 9:26 ` Matias Bjørling
2021-04-12 9:49 ` Javier González
2021-04-12 10:20 ` Matias Bjørling
2021-04-12 11:20 ` Hans Holmberg [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CANr-nt0YpZ0CuREDu613LM7yBK_qgPfwg-bNU-T=2me5GJT=Gw@mail.gmail.com' \
--to=hans.ml.holmberg@owltronix.com \
--cc=axboe@kernel.dk \
--cc=hch@lst.de \
--cc=javier@javigon.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-nvme@lists.infradead.org \
--cc=mb@lightnvm.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).