With the Linux 4.4 merge window ending this weekend, I ran GitStats on the latest mainline Linux Git code-base as of Saturday afternoon. It reports 20,851.092 lines at the moment made up of 560,344 commits from 14,557 authors. The 20.85 million lines is distributed amongst 52,184 files.
Two weeks ago it was at 51,570 files that amount to 20,618,159 lines via 548,273 commits. So for the Linux 4.4 merge window there's been a gain of more than 200 thousand lines of code plus a few hundred new files and around 12,000 commits.
Those wishing to explore the Linux 4.4 Git statistics as of today can find the GitStats results uploaded here.