[$] 6.0 Merge window, part 2

Linus Torvalds released6.0-rc1 and closed the merge window onAugust 14, as expected; by then, 13,543 non-merge changesetshad found their way into the mainline repository. Just over half of thosewere pulled after our first 6.0 merge-windowsummary was written. The latter part of the merge window tends to bemore focused on fixes than new features, but there were still a number ofinteresting changes added during this time.