A pull request that touches over 8,000 files, changing over 20,000 lines of code in the process, is (fortunately) not something that happens every day. It did happen at the end of the 7.0 merge window, though, when Linus Torvalds merged an extensive set of changes by Kees Cook to the venerable kmalloc() API (and its users). As a result of that work, though, the kernel has a new set of type-safe memory-allocation functions, with a last-minute bonus change to make the API a little easier to use.