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Re: [Xen-devel] [PATCH v2] MAINTAINERS: Clarify the meaning of nested maintainership



On Wed, Apr 27, 2016 at 05:06:27PM +0100, George Dunlap wrote:
> Clarify the meaning of nested maintainership.
> 
> Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
> ---
> We had a discussion about the meaning of nested maintainership at the
> recent Xen Hackathon.  The notes of that meeting can be found on this
> list [1].  No decision is official until discussed on this list, so
> consider this patch the official proposal for this change, and object
> or ask for clarification accordingly.
> 
> Compared to v1, there is one change that is worth pointing out: The
> claim that THE REST consists of all committers.  This is the case at
> the moment, but this change would codify that this is an invariant we
> intend to keep going forward.
> 
> The advantage of this is that the dispute resolution mentioned in this
> patch for maintainers who can't agree lines up directly with the
> fall-back for broader community issues upon which we can't reach
> consensus.
> 
> [1] marc.info/?i=<EDB48431-C3EF-4461-B2D2-3AB95EA6C392@xxxxxxxxx>
> 
> Changes in v2:
> - fixed spelling of "maintainer"
> - fixed path of multi.c
> - clarified that the resolution by REST would be by *majority* vote
> - Asserted that The REST consists of all committers
> 
> CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> CC: Jan Beulich <jbeulich@xxxxxxxx>
> CC: Keir Fraser <keir@xxxxxxx>
> CC: Tim Deegan <tim@xxxxxxx>
> CC: Wei Liu <wei.liu2@xxxxxxxxxx>
> CC: Konrad Wilk <konrad.wilk@xxxxxxxxxx>
> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> CC: Lars Kurth <lars.kurth@xxxxxxxxxx>


Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

> ---
>  MAINTAINERS | 34 ++++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 5af7a0c..9057f96 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -94,6 +94,40 @@ Descriptions of section entries:
>             printk, pr_info or pr_err
>          One regex pattern per line.  Multiple K: lines acceptable.
>  
> +
> +The meaning of nesting:
> +
> +Many maintainership areas are "nested": for example, there are entries
> +for xen/arch/x86 as well as xen/arch/x86/mm, and even
> +xen/arch/x86/mm/shadow; and there is a section at the end called "THE
> +REST" which lists all committers.  The meaning of nesting is that:
> +
> +1. Under normal circumstances, the Ack of the most specific maintainer
> +is both necessary and sufficient to get a change to a given file
> +committed.  So a change to xen/arch/x86/mm/shadow/multi.c requires the
> +the Ack of the xen/arch/x86/mm/shadow maintainer for that part of the
> +patch, but would not require the Ack of the xen/arch/x86 maintainer or
> +the xen/arch/x86/mm maintainer.
> +
> +(A patch of course needs acks from the maintainers of each file that
> +it changes; so a patch which changes xen/arch/x86/traps.c,
> +xen/arch/x86/mm/p2m.c, and xen/arch/x86/mm/shadow/multi.c would
> +require an Ack from each of the three sets of maintainers.)
> +
> +2. In unusual circumstances, a more general maintainer's Ack can stand
> +in for or even overrule a specific maintainer's Ack.  Unusual
> +circumstances might include:
> + - The patch is fixing a high-priority issue causing immediate pain,
> + and the more specific maintainer is not available.
> + - The more specific maintainer has not responded either to the
> + original patch, nor to "pings", within a reasonable amount of time.
> + - The more general maintainer wants to overrule the more specific
> + maintainer on some issue. (This should be exceptional.)
> + - In the case of a disagreement between maintainers, THE REST can
> + settle the matter by majority vote.  (This should be very exceptional
> + indeed.)
> +
> +
>  Maintainers List (try to look for most precise areas first)
>  
>               -----------------------------------
> -- 
> 2.1.4
> 

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