linux-kernel - Re: [PATCH AUTOSEL 4.14 25/35] iomap: sub-block dio needs to zeroout beyond EOF

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Message-ID: <20181204072833.GB25998@kroah.com>
Date:   Tue, 4 Dec 2018 08:28:33 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Thomas Backlund <tmb@...eia.org>
Cc:     Sasha Levin <sashal@...nel.org>,
        Dave Chinner <david@...morbit.com>, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org, Dave Chinner <dchinner@...hat.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.14 25/35] iomap: sub-block dio needs to zeroout
 beyond EOF

On Mon, Dec 03, 2018 at 11:22:46PM +0159, Thomas Backlund wrote:
> Den 2018-12-03 kl. 11:22, skrev Sasha Levin:
> 
> > 
> > This is a case where theory collides with the real world. Yes, our QA is
> > lacking, but we don't have the option of not doing the current process.
> > If we stop backporting until a future data where our QA problem is
> > solved we'll end up with what we had before: users stuck on ancient
> > kernels without a way to upgrade.
> > 
> 
> Sorry, but you seem to be living in a different "real world"...
> 
> People stay on "ancient kernels" that "just works" instead of updating
> to a newer one that "hopefully/maybe/... works"

That's not good as those "ancient kernels" really just are "kernels with
lots of known security bugs".

It's your systems, I can't tell you what to do, but I will tell you that
running older, unfixed kernels, is a known liability.

Good luck!

greg k-h