From: Bart Van Assche <bvanassche@acm.org>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: ooo@electrozaur.com, Nathan Chancellor <natechancellor@gmail.com>,
"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
hch@infradead.org
Subject: Re: [PATCH] libosd: Remove ignored __weak attribute
Date: Fri, 26 Oct 2018 14:59:07 -0700 [thread overview]
Message-ID: <1540591147.66186.127.camel@acm.org> (raw)
In-Reply-To: <CAKwvOdm-xYRqCBXhLC1ceC44_rEmggW4qiSgGpRkpL+p-NadVg@mail.gmail.com>
On Fri, 2018-10-26 at 14:36 -0700, Nick Desaulniers wrote:
> On Fri, Oct 26, 2018 at 2:30 PM Bart Van Assche <bvanassche@acm.org> wrote:
> >
> > On Fri, 2018-10-26 at 14:00 -0700, Nick Desaulniers wrote:
> > > On Fri, Oct 26, 2018 at 11:01 AM Bart Van Assche <bvanassche@acm.org> wrote:
> > > >
> > > > On Fri, 2018-10-26 at 10:54 -0700, Nick Desaulniers wrote:
> > > > > If creating one instance of this variable is a functional change, I
> > > > > can't help but suspect the original code was wrong. But maybe Bart,
> > > > > Boaz, or Christoph can clarify or have more thoughts on this? Looks
> > > > > like Boaz added this header in commit de258bf5e638 ("[SCSI] libosd:
> > > > > OSDv1 Headers").
> > > >
> > > > Hi Nick and Nathan,
> > > >
> > > > Had you noticed the following e-mail from early October:
> > > > https://marc.info/?l=linux-kernel&m=153849955503249?
> > >
> > > From this subthread with Linus, removal of the exofs fs and scsi osd
> > > code would be a user visible change and is not an option. See:
> > > https://lkml.org/lkml/2018/10/27/3
> > > https://lkml.org/lkml/2018/10/27/44
> >
> > Hi Nick,
> >
> > Linus wrote that removing a filesystem is considered a userspace breakage
> > if a user notices. The key part is "if a user notices". Who are the exofs
> > users?
>
> See my thoughts on this in https://lkml.org/lkml/2018/10/27/27.
> Particularly the part about the IMO catch 22.
>
> Neither you nor I can claim "there are none."
That's not completely correct. The standard approach to check whether or not
a driver is still being used is to check its git history. If the number of
contributors is low and it was several years ago that a new feature was added
or a bug has been fixed it is likely that nobody is using that driver anymore.
Bart.
next prev parent reply other threads:[~2018-10-26 21:59 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-30 20:54 [PATCH] libosd: Remove ignored __weak attribute Nathan Chancellor
2018-10-01 22:47 ` Nick Desaulniers
2018-10-02 1:16 ` Bart Van Assche
2018-10-02 6:55 ` Nathan Chancellor
2018-10-02 14:56 ` Christoph Hellwig
2018-10-02 16:59 ` Boaz Harrosh
2018-10-02 17:24 ` Nick Desaulniers
2018-10-02 17:57 ` Bart Van Assche
2018-10-02 22:33 ` Nick Desaulniers
2018-10-02 23:06 ` Bart Van Assche
2018-10-25 21:31 ` Nathan Chancellor
2018-10-25 22:02 ` Nick Desaulniers
2018-10-25 22:55 ` Nathan Chancellor
2018-10-26 17:54 ` Nick Desaulniers
2018-10-26 18:01 ` Bart Van Assche
2018-10-26 18:05 ` Nathan Chancellor
2018-10-26 18:31 ` Nick Desaulniers
2018-10-26 19:22 ` Linus Torvalds
2018-10-26 20:05 ` Nick Desaulniers
2018-10-26 20:42 ` Linus Torvalds
2018-10-26 21:02 ` Nick Desaulniers
2018-10-26 21:00 ` Nick Desaulniers
2018-10-26 21:30 ` Bart Van Assche
2018-10-26 21:36 ` Nick Desaulniers
2018-10-26 21:59 ` Bart Van Assche [this message]
2018-10-26 22:07 ` Nick Desaulniers
2018-10-26 22:24 ` Bart Van Assche
2018-10-27 13:28 ` Martin K. Petersen
2018-10-28 15:44 ` Christoph Hellwig
2018-11-01 1:05 ` Boaz Harrosh
2018-10-27 3:35 ` Theodore Y. Ts'o
2018-10-27 6:15 ` Bart Van Assche
2018-10-27 6:25 ` Nathan Chancellor
2018-11-01 1:15 ` Boaz Harrosh
2018-11-01 1:39 ` Boaz Harrosh
2018-11-01 1:44 ` Nathan Chancellor
2019-01-26 6:47 ` [PATCH RESEND] " Nathan Chancellor
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