Re: [PATCH v8 00/14] support "task_isolation" mode for nohz_full

Peter Zijlstra
2015-10-23T08:50:14Z

On Fri, Oct 23, 2015 at 04:33:02AM +0200, Frederic Weisbecker wrote:
> On Thu, Oct 22, 2015 at 04:31:44PM -0400, Chris Metcalf wrote:
> > On 10/21/2015 08:39 AM, Peter Zijlstra wrote:
> > >Can you *please* start a new thread with each posting?
> > >
> > >This is absolutely unmanageable.
> >
> > I've been explicitly threading the multiple patch series on purpose
> > due to this text in "git help send-email":
> >
> > --in-reply-to=<identifier>
> > Make the first mail (or all the mails with --no-thread) appear
> > as a reply to the given Message-Id, which avoids breaking
> > threads to provide a new patch series. The second and subsequent
> > emails will be sent as replies according to the
> > --[no]-chain-reply-to setting.
> >
> > So for example when --thread and --no-chain-reply-to are
> > specified, the second and subsequent patches will be replies to
> > the first one like in the illustration below where [PATCH v2
> > 0/3] is in reply to [PATCH 0/2]:
> >
> > [PATCH 0/2] Here is what I did...
> > [PATCH 1/2] Clean up and tests
> > [PATCH 2/2] Implementation
> > [PATCH v2 0/3] Here is a reroll
> > [PATCH v2 1/3] Clean up
> > [PATCH v2 2/3] New tests
> > [PATCH v2 3/3] Implementation
> >
> > It sounds like this is exactly the behavior you are objecting
> > to. It's all one to me because I am not seeing these emails
> > come up in some hugely nested fashion, but just viewing the
> > responses that I haven't yet triaged away.

Yeah, the git people are not per definition following lkml standards,
even though git originated 'here'. They, for a long time, also defaulted
to --chain-reply-to, which is absolutely insane.

> I personally (and I think this is the general LKML behaviour) use in-reply-to
> when I post a single patch that is a fix for a bug, or a small enhancement,
> discussed on some thread. It works well as it fits the conversation inline.
>
> But for anything that requires significant changes, namely a patchset,
> and that includes a new version of such patchset, it's usually better
> to create a new thread. Otherwise the thread becomes an infinite mess and it
> eventually expands further the mail client columns.

Agreed, although for single patches I use my regular mailer (mutt) and
can't be arsed with tools. Also I don't actually use git-send-email
ever, so I might be biased.