linux-kernel - Re: linux-next: first tree

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Message-ID: <47B4B68D.7080805@garzik.org>
Date:	Thu, 14 Feb 2008 16:45:49 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Linux IDE mailing list <linux-ide@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: linux-next: first tree

James Bottomley wrote:
> So does this indicate the meaning of upstream and upstream-fixes is
> still the same?  I always took upstream-fixes to be bug fixes for this
> -rc and upstream as queued for the next merge window, in which case NEXT
> would be the union of those two sets?

In practice, #upstream-fixes isn't very useful, because I send its 
contents to Linus very very rapidly once they are committed to that 
branch.  I then locally delete that branch once Linus merges it, and 
re-create it [again, locally] the next time I have some bug fixes to apply.

So it is a "somewhat throwaway" branch.

The main utility of #upstream-fixes is so that I can do
	git branch upstream-linus upstream-fixes
and then continue making commits in parallel with a Linus pull+push cycle.

The #upstream branch is much more useful, because that is where things 
for the next kernel are stored, during a bug-fix-only cycle.  This is 
largely equivalent to NEXT, though I plan to be more stringent in my 
requirements for NEXT commits than #upstream commits.

One thing to note is that "pure" rebases are somewhat rare; I much 
prefer to wait until the batch of commits lands in 
torvalds/linux-2.6.git, before I blow away and recreate (with a new 
torvalds HEAD) the branch in question.

So, to answer your question...  Fixes should go upstream fast enough 
that they should hit NEXT implicitly via a Linus pull+push.  It should 
be the union of two sets, yes, if a Linus cycle takes a long time.  When 
both #upstream and #upstream-fixes are active, I tend to always branch 
#upstream off of #upstream-fixes and/or do a "git pull . upstream-fixes" 
when updating #upstream.

	Jeff

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