Re: What's cooking in git.git (Dec 2015, #05; Tue, 15)

>
> * sb/submodule-parallel-fetch (2015-12-14) 8 commits
>  - submodules: allow parallel fetching, add tests and documentation
>  - fetch_populated_submodules: use new parallel job processing
>  - run-command: add an asynchronous parallel child processor
>  - sigchain: add command to pop all common signals
>  - strbuf: add strbuf_read_once to read without blocking
>  - xread_nonblock: add functionality to read from fds without blocking
>  - xread: poll on non blocking fds
>  - submodule.c: write "Fetching submodule <foo>" to stderr
>  (this branch is used by sb/submodule-parallel-update.)
>
>  Add a framework to spawn a group of processes in parallel, and use
>  it to run "git fetch --recurse-submodules" in parallel.
>
>  Rerolled and this seems to be a lot cleaner.  The merge of the
>  earlier one to 'next' has been reverted.
>
>  Will merge to 'next' after a few days.

>
> * sb/submodule-parallel-update (2015-12-14) 8 commits
>  - clone: allow an explicit argument for parallel submodule clones
>  - submodule update: expose parallelism to the user
>  - git submodule update: have a dedicated helper for cloning
>  - fetching submodules: respect `submodule.fetchJobs` config option
>  - submodule-config: introduce parse_generic_submodule_config
>  - submodule-config: remove name_and_item_from_var
>  - submodule-config: drop check against NULL
>  - submodule-config: keep update strategy around
>  (this branch uses sb/submodule-parallel-fetch.)
>
>  Builds on top of the "fetch --recurse-submodules" work to introduce
>  parallel downloading into multiple submodules for "submodule update".
>
>  Needs review.