On 22 January 2014 14:39, Alex Shi <alex.shi@linaro.org> wrote:

I mean LSK has many input resources tree, and if every resource like to
maintain a separate and functional tree, while they also cherry pick the
same patch, then when revert needed, that is a bit ugly. and that's the
Tixy's meaning a bit difficult to maintain.
If it is a issue, I want to know why we need keep all input resource
trees fast forward only. Do there have specific requests for the fast
forward?

It makes life a lot easier making sure the right thing happens when things are merged into the LSK itself if the inputs themselves are fast forward only too (at least the versions of them that are merged into the LSK) and it makes the history of the LSK clearer since otherwise we get multiple copies of the same patch appearing in history (as has happened for the big.LITTLE branch).