linux-kernel - Re: [PATCH v2] kbuild: give the SUBLEVEL more room in KERNEL

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Message-ID: <CAK7LNAT96ECeS2=UkNFdwU2fLG_3v1jGyO5pLqYkfGVHuJpXXA@mail.gmail.com>
Date:   Wed, 20 Jan 2021 03:02:41 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Sasha Levin <sashal@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable@...nel.org
Subject: Re: [PATCH v2] kbuild: give the SUBLEVEL more room in KERNEL_VERSION

On Wed, Jan 20, 2021 at 12:25 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Mon, Jan 18, 2021 at 02:54:53PM -0500, Sasha Levin wrote:
> > SUBLEVEL only has 8 bits of space, which means that we'll overflow it
> > once it reaches 256.
> >
> > Few of the stable branches will imminently overflow SUBLEVEL while
> > there's no risk of overflowing VERSION.
> >
> > Thus, give SUBLEVEL 8 more bits which will be stolen from VERSION, this
> > should create a better balance between the different version numbers we
> > use.
> >
> > The downside here is that Linus will have 8 bits less to play with, but
> > given our current release cadence (~10 weeks), the number of Linus's
> > fingers & toes (20), and the current VERSION (5) we can calculate that
> > VERSION will overflow in just over 1,000 years, so I'm kicking this can
> > down the road.
> >
> > Cc: stable@...nel.org
> > Signed-off-by: Sasha Levin <sashal@...nel.org>
> > ---
>
> Looks good to me, thanks for fixing up the USB code.
>
> Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>


Applied to linux-kbuild. Thanks.



-- 
Best Regards
Masahiro Yamada