[Q] Which tree should we work agains?

["Yi Li" <lovelylich@gmail.com>]

Hi Dan,
I’m a kernel newbie, and sorry for bother you in advanced.
From your this email: http://article.gmane.org/gmane.linux.kernel.janitors/30739,
you have pointed out we should work against linux-next tree. is it true for all of us?

From this site: https://code.google.com/p/kernel-janitors/, I got this statements:
"Q: What version should I be patching against? 
A: Latest "linus" (2.6.x-rcY from kernel.org). Be sure to check -mm and -kj trees to see 
	if someone already did that. "
For -mm tree, is it means the linux-mm tree? after reading this wiki: http://en.wikipedia.org/wiki/Mm_tree,
it seems linux-next is the substitution for linux-mm tree's "new features" functionality.
For the -kj tree, I event can't find it from https://git.kernel.org/cgit website, only found it at here: http://cba.si/kj/
is it outdated, and un-useful?

So, in one word, could you kindly point me out which tree I should work against ?Or just kindly give me the links for document.
Thanks for your help in advanced.

regards,
Yi

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