linux-kernel - Re: [PATCH] staging: android: ashmem: Declared file operation with 'const' keyword

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Message-ID: <20210519145105.GC1417@agape.jhs>
Date:   Wed, 19 May 2021 16:51:06 +0200
From:   Fabio Aiuto <fabioaiuto83@...il.com>
To:     Hriday Hegde <hridayhegde1999@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Christian Brauner <christian@...uner.io>,
        Hridya Valsaraju <hridya@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH] staging: android: ashmem: Declared file operation with
 'const' keyword

Hi Hriday,

On Wed, May 19, 2021 at 08:06:14PM +0530, Hriday Hegde wrote:
> On 19-05-2021 15:20, Greg Kroah-Hartman wrote:
> > A: http://en.wikipedia.org/wiki/Top_post
> > Q: Were do I find info about this thing called top-posting?
> > A: Because it messes up the order in which people normally read text.
> > Q: Why is top-posting such a bad thing?
> > A: Top-posting.
> > Q: What is the most annoying thing in e-mail?
> >
> > http://daringfireball.net/2007/07/on_top
> >
> > On Wed, May 19, 2021 at 03:00:08PM +0530, Hriday Hegde wrote:
> >> I am not really sure how to do that and how to reflect it in the patch i followed what was taught in the Beginners course and it does not mention building. I know i need to test it out but is running 'patch -p1 < x.patch what i need to do?
> > That does not build the code you changed, right?
> >
> > I'm sure whatever course you took, it did reference the fact that you
> > need to ensure that your change actually works properly by the very
> > least being able to be compiled correctly.  Please go over those
> > instructions again.
> >
> > good luck!
> >
> > greg k-h
> 
> I am using the A Beginner's Guide to Linux Kernel Development (LFD103) by the linux foundation for this but i cant find any commands to as to build and test , the only way i tried compiling is with a custom Makefile and it didn't work, i've got a few errors so the const keyword might not work here since the variable is being written to.
> 
> 

try following this tutorial from scratch:

https://kernelnewbies.org/FirstKernelPatch

it's simply complete and helps a lot, from
gathering all tools needed to contribute to the
community to sending whole patchsets.

In your emails don't go over 80-100 character per line,
when you ask things or your mails will be difficult
to read.

thank you,

fabio