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



On Mon, 8 Jul 2013, Stefano Stabellini wrote:
> 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.

I forgot to add:

Anybody that touch the patch adds his own Signed-off-by. Even applying a
patch manually to a tree counts, that's why maintainers add
Signed-off-by.
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