"A brief discussion on the lkml began whan it was asked why
Andrew Morton isn't using git to manage his -mm Linux kernel tree.
Andrew summarized, 'because everthing would take me 100x longer?'
He went on to explain that this is because he and Linus have a
different way of working, 'he reverts about one patch a month. I
drop tens a day. He never _alters_ patches. 2.6.15-mm1 had about
200 patches which modify earlier patches and which get rolled up
into the patch-which-they-modify before going upstream...'"