As of the 3.18-rc6release, 11,186 non-merge changesets have been pulled into the mainline repository for the 3.18 development cycle. That makes this release about 1,000 changesets smaller than its immediate predecessors, but still not a slow development cycle by any means. Since this cycle is getting close to its end, it’s a good time to look at where the code that came into the mainline during this cycle came from.
Read more at LWN