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

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Message-ID: <YAb5+R1R74QXds3o@kroah.com>
Date:   Tue, 19 Jan 2021 16:25:45 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     masahiroy@...nel.org, michal.lkml@...kovi.net,
        torvalds@...ux-foundation.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH v2] kbuild: give the SUBLEVEL more room in KERNEL_VERSION

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>