Re: [Xen-devel] [Qemu-devel] [PATCH v5] Xen PV Device

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Mon, 8 Jul 2013, Anthony Liguori wrote:
> Andreas FÃrber <afaerber@xxxxxxx> writes:
> 
> > Am 08.07.2013 16:10, schrieb Peter Maydell:
> >> On 8 July 2013 15:04, Anthony Liguori <anthony@xxxxxxxxxxxxx> wrote:
> >>> (Just a nit and responding because this happens commonly).
> >>>
> >>> You probably mean Reviewed-by.  Acked-by really means, "I am not the
> >>> maintainer of this area, I have not reviewed this patch, but I am
> >>> generally okay with the idea as best I can tell."
> >> 
> >> Don't you mean "I *am* the maintainer of this area" ? I've always
> >> assumed it means "as the maintainer I have a potential veto over
> >> this code change and I am explicitly not exercising it even though
> >> I may not have done a complete review and/or test"...
> >
> > I think Anthony was referring to: if I am the maintainer I don't usually
> > put tags on patches but pick them up and add my Signed-off-by.
> > (Possible exception: when only part of a series is good and you don't
> > feel like cherry-picking from it.)
> 
> Right, it goes:
> 
> 1) Acked-by:
> 
> I haven't reviewed the code in detail but the general idea seems sane.
> 
> 2) Reviewed-by:
> 
> The general idea seems sane, and I have done a thorough review of the
> patch in question.
> 
> 3) Signed-off-by:
> 
> All of the above, plus I have ensured that the code is of good quality,
> does not break things, and the other things expected of a maintainer.
> This is considered to be a legally binding statement too based on the
> DCO so be aware of that and ensure you have the right approval to make
> such a statement.

I don't think that is a good idea to mix up DCO with reviewing patches.
In fact in the Linux community I think that it's pretty clear that
Signed-off-by doesn't mean anything other than "at least a portion of
the changes have been done by me and I am the Copyright owner of them".

For example Alice writes a patch and goes away, Bob takes it, rewrites
most of it and then sends it upstream. The patch has Alice and Bob
Signed-off-by but Alice might not even read Bob's patch.

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