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Date:   Fri, 4 Nov 2016 20:06:02 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-unionfs@...r.kernel.org
Subject: Re: [GIT PULL] overlayfs fixes for 4.9-rc3

On Fri, Nov 4, 2016 at 2:30 AM, Miklos Szeredi <miklos@...redi.hu> wrote:
>
> Also introduce the concept of feature flags to allow backward incompatible
> changes to the overlay format.  This should have been there from day one; the
> best we can do now is backport to stable kernels.  Add the check for features
> without adding any actual features yet.

No. I pulled the three other commits, but not that last one.

That feature just seems to actively *encourage* backwards incompatible
features. It's a bad idea. Don't do it. If we've been able to do
without it so far, then why should we suddenly start doing things like
this?

So I don't agree that it should have been there since day one, it just
shouldn't exist at all.

                  Linus

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