Re: [RFC] to rebase or not to rebase on linux-next

From: Theodore Tso
Date: Mon Oct 26 2009 - 01:21:33 EST


On Sun, Oct 25, 2009 at 09:53:41PM -0700, Luck, Tony wrote:
>
> If the "rewind" is simply to add "signed-off-by" notations, update
> commit comments (or code comments) ... then it does seem useful to
> keep the commit chain anchored to the original commit, as the testing
> that has been done is all still valid.
>
> But as soon as you talk about fixing bugs ... then you ought to
> just do a "rebase". The code you are adding has changed, so it is
> incorrect to preserve the illusion that these changes have had
> extensive testing against the old commit base. The code has changed,
> so the testing clock gets reset to zero.

I don't think anyone should (or does?) use the base version of a patch
series as an indication of how much testing a patch series has
received. It doesn't make much sense.

Suppose I update the 40th patch of a 50th patch series to add check
for kmalloc() returning NULL that had been inadvertently left out, or
some other error checking is added. Or suppose I add a new tracepoint
definition to a 50 patch series. Sorry, I'm not going to rewind the
entire patch series because someone thinks the base version of the
patch series somehow is a magic "test clock" indicator....

- Ted
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