From: Nick Desaulniers <ndesaulniers@google.com>
To: bvanassche@acm.org
Cc: Nathan Chancellor <natechancellor@gmail.com>,
ooo@electrozaur.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>
Subject: Re: [PATCH] libosd: Remove ignored __weak attribute
Date: Tue, 2 Oct 2018 10:24:18 -0700 [thread overview]
Message-ID: <CAKwvOd=wgxB69dMxzMeH2edCn=TdQGPGkNVW1e=QHPTJtO9ZNw@mail.gmail.com> (raw)
In-Reply-To: <10b12992-3570-4646-374b-82cbd7276839@acm.org>
On Mon, Oct 1, 2018 at 6:16 PM Bart Van Assche <bvanassche@acm.org> wrote:
>
> On 9/30/18 1:54 PM, Nathan Chancellor wrote:
> > diff --git a/include/scsi/osd_types.h b/include/scsi/osd_types.h
> > index 48e8a165e136..6b6fdcafa6cc 100644
> > --- a/include/scsi/osd_types.h
> > +++ b/include/scsi/osd_types.h
> > @@ -28,7 +28,7 @@ struct osd_obj_id {
> > osd_id id;
> > };
> >
> > -static const struct __weak osd_obj_id osd_root_object = {0, 0};
> > +static const struct osd_obj_id osd_root_object = {0, 0};
>
> Structure definitions should occur in .c files instead of in header
> files especially if the header file is included from multiple source
> files. Please consider moving the definition of osd_root_object into a
> .c file.
> Additionally, zero initializers should be left out to minimize
> the size of object files.
Sorry, my understanding was that global variables either occupy the
.bss section or the .data section, depending on whether they were
zero-initialized vs initialized to non-zero, respectively (where
non-initialized are treated as zero initialized). Looks like without
the explicit zero initialization, compilers will put the symbols in a
"common" section, which `man 1 nm` says is also unitialized data. I
didn't think .bss sections occupied space in an object file or binary;
the kernel's loader would set up the mappings at execution? Can you
clarify?
>
> Boaz, the most recent osd patch that is neither trivial nor treewide
> refactoring is six years old (51976a8c85ce ("[SCSI] osd_uld: Add osdname
> & systemid sysfs at scsi_osd class"). That suggests that nobody is using
> this driver anymore. Can this driver be removed from the kernel tree?
>
> Thanks,
>
> Bart.
--
Thanks,
~Nick Desaulniers
next prev parent reply other threads:[~2018-10-02 17:24 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 [this message]
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
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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