linux-kernel - Re: [PATCH v2] proc/fd: Remove unnecessary variable initialisations in seq

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Message-ID: <20200612170431.GG8681@bombadil.infradead.org>
Date:   Fri, 12 Jun 2020 10:04:31 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     Kaitao Cheng <pilgrimtao@...il.com>, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Alexey Dobriyan <adobriyan@...il.com>,
        Colin Ian King <colin.king@...onical.com>,
        Muchun Song <songmuchun@...edance.com>
Subject: Re: [PATCH v2] proc/fd: Remove unnecessary variable initialisations
 in seq_show()

On Fri, Jun 12, 2020 at 07:03:49PM +0200, Markus Elfring wrote:
> >>> 'files' will be immediately reassigned. 'f_flags' and 'file' will be
> >>> overwritten in the if{} or seq_show() directly exits with an error.
> >>> so we don't need to consume CPU resources to initialize them.
> >>
> >> I suggest to improve also this change description.
> >>
> >> * Should the mentioned identifiers refer to variables?
> >>
> >> * Will another imperative wording be preferred?
> >>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=b791d1bdf9212d944d749a5c7ff6febdba241771#n151
> >>
> >> * I propose to extend the patch a bit more.
> >>   How do you think about to convert the initialisation for the variable “ret”
> >>   also into a later assignment?
> >
> > Please stop commenting on people's changelogs.  You add no value.
> 
> Would you like to clarify concrete software development ideas?

Yes.  Learn something deeply, then your opinion will have value.